JP3173199B2 - Feedback processing condition correction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a feedback-type processing condition correction apparatus for correcting processing conditions of a work to be processed next by feeding back information relating to a dimensional error of a processed work. is there.

[0002]

2. Description of the Related Art The present applicant is studying the following as one type of the above-mentioned feedback-type processing condition correction apparatus. That is, (a) a processing machine that sequentially processes each of a plurality of works, and (b) processing conditions of the processing machine are determined based on a correction value supplied from the outside, and the processing machine is determined according to the determined processing conditions. A processing machine control means for controlling, and (c) a measuring machine for sequentially measuring the dimensions of each of a plurality of workpieces processed by the processing machine, and measuring by the measuring machine between the processing machine and the measuring machine. Feedback processing condition correction device to be used connected to the processing machine control means and the measuring machine of the processing system that allows the existence of a workpiece waiting for, and (d) based on the measured value by the measuring machine A correction value determining means for determining a correction value corresponding to a work to be processed next by the processing machine; and (e) a correction value supply means for supplying the determined correction value to the processing machine control means.

[0003] The present applicant has previously proposed the following as one embodiment of a feedback-type processing condition correction device of that type. It is a continuous correction type that determines a correction value corresponding to a workpiece to be processed next each time a plurality of workpieces are sequentially measured by the measuring machine, that is, each time a measurement value is obtained by the measuring machine. This is a feedback processing condition correction device.

[0004]

However, it has been found that the continuous correction type feedback processing condition correction apparatus has the following problems. That is, this feedback-type processing condition correction apparatus has a problem that the load on the apparatus itself is large because the correction value of the processing condition must be determined frequently.

[0005] This problem is caused by a feedback-type processing condition supplement.
This can be solved by using the following structure for the main device. As shown in FIG.
In addition, the processing machine 1, the processing machine control means 2 and the measuring machine 3
And between the processing machine 1 and the measuring machine 3
That there is a workpiece waiting for measurement by the measuring machine 3
Feedback to be used with the processing system
A machining-type processing condition correction device, wherein the correction value determination means 4 and
And the correction value supply means 5
A plurality of works are sequentially measured by the measuring device 3 by the determining means 4.
Is processed intermittently by the processing machine 1
The correction value corresponding to the work to be performed shall be determined
It is.

[0006] In this feedback-type processing condition correction device,
As shown conceptually in the graph of FIG.
A plurality of workpieces are measured by the measuring machine 3 by the value determining means 4.
Intermittently, while the next
The correction value of the machining condition of the workpiece is determined. Multiple measurements in order
Is not determined continuously in synchronization with the
It is determined intermittently.

However, this graph shows the processing machine 1 and the measuring machine
3 and a work waiting for measurement by the measuring machine 3
(Also referred to as “waiting work” below)
In this graph, "measurement delay"
Is a standby work existing between the processing machine 1 and the measuring machine 3.
Equivalent to a number. In the graph, “U _i ”
The correction value and “U _{i + 1} ” represent the next correction value, respectively.
I have. Therefore, the current correction value U _i is calculated after
At the next time, and similarly, the next correction value U _{i + 1}
Will also appear in the dimensional error after the delay in measurement. Ma
In addition, this graph shows that multiple workpieces are
When processing according to the processing conditions, the dimensions of each of those workpieces
The error is the number of workpieces measured by the measuring machine 3 (hereinafter, referred to as the number of workpieces).
In proportion to the increase in the number of measurement workpieces)
It is also obtained if it is assumed to increase. What
The same is true for the following graphs.
You.

By the way, as described above, this device is
Standby work between the machine 1 and the measuring machine 3
Should be used with a processing system that allows
Therefore, according to the processing conditions affected by the previous correction value
The machined work is measured by the measuring machine 3 immediately thereafter.
Not necessarily, after some other work measurements
Sometimes it is measured first. Therefore, the last correction
It is necessary to directly reflect the effect of the value on this correction value
If, processing conditions affected by the previous correction value
At least one workpiece processed according to
Determine the current correction value each time it is measured by
Is desirable.

For this purpose, for example, a feedback type
The processing condition correction device is reduced by the correction value determination means 4.
The shadow of the correction value previously determined by the correction value determining means 4
Work processed according to the affected processing conditions
While the measurement by the measuring device 3 is not completed, the current correction value is
What is necessary is just to make it not determined. But that
Feedback type processing condition correction device configured as above
There is still a problem. There is an error in the measured value itself
Since the difference cannot be avoided, the true correction value can be accurately calculated.
It cannot be estimated.

The inventions of claims 1 to 7 have been made to solve this problem.

[0011]

[Means for Solving the Problems] In order to solve this problem
As shown in FIG. 1, the invention of claim 1 includes a processing machine 1, a processing machine control means 2 and a measuring machine 3, and the measuring machine 3 is provided between the processing machine 1 and the measuring machine 3. A feedback-type processing condition correction apparatus to be used with a processing system that permits the presence of a workpiece waiting for measurement by the correction value determination means 4 and the correction value supply means 5; Are sequentially stored in a plurality of measurement values sequentially obtained by the measuring device 3.
When the number of stored measurement values exceeds the set number,
At the same time, based on the accumulated latest set of measured values.
Of the work to be processed next by the processing machine 1
Determine the correction value of the machining condition, and after the time of determination of the correction value
Preferably, accumulation of the measured values is restarted from a non-accumulation state .

Here, the "correction value determining means 4"
For example, the correction value may be determined based only on the error value that is the difference between the measured value and the target value of the processing dimension of the workpiece, or the error value as well as the change tendency thereof (the error value may be
The correction value is determined based on the tendency of the change as the number of workpieces measured by the measuring machine 3 increases), or based on not only the error value and the change tendency but also the change tendency of the change tendency. A mode in which the correction value is determined can be adopted. In addition, the true value of the current measurement value is estimated based on the current measurement value and the past measurement value, and the correction value is determined by regarding the estimated true value as the actual measurement value. Can also.

According to a second aspect of the present invention, the "correction value determining means 4" (FIG. 1) according to the first aspect of the present invention is configured to sequentially accumulate the measured values measured by the measuring device 3 and to set a plurality of the accumulated measured values. When the number becomes more than one, the current correction value is determined based on the accumulated measurement values of the latest set, and at least one of the processed values is processed in accordance with the processing conditions affected by the current correction value. The accumulation of the measured values is restarted from the non-accumulation state after the time when the head correction target work to be measured first by the measuring machine 3 among the works is completed its measurement.

Claims3The invention of claim2In the invention of
The "correction value determining means 4" (FIG. 1)
Measured values are accumulated sequentially, and the number of accumulated measured values can be set multiple times
When the number becomes more than
The provisional correction value of this time is determined based on several measurement values, and
A main correction that takes this as the final correction value, After the end of the main correction
Continue to accumulate the measured values, and after the end of the main correction,
According to the processing conditions affected by the final correction value of the main correction
First of at least one workpiece processed
Work to be corrected by the machine 3
Measuring machine 3 for workpieces processed only once
Until the time when measurement by
Each time a workpiece is measured, the latest set
Based on several measurements, follow the same rules as in the main correction
To determine the provisional correction value for each
The value obtained by subtracting the previous provisional correction value from the positive value is the final
Auxiliary correction to determine a positive value is performed. Main correction
The work to be corrected at the top of the final correction value is determined by the measuring machine 3.
After the end of measurement, accumulation of measured values is not accumulated.
And the "correction value supply means 5"
To the main correction determined by the correction value determination means 4.
Processing machine control means
2 is supplied.

According to a fourth aspect of the present invention, the "correction value determining means 4" (FIG. 1) according to the third aspect of the invention measures the number of final correction value determinations in a series of auxiliary corrections, and determines the measured number of determinations. Reaches a set value, if the sum of a plurality of final correction values determined in at least the series of auxiliary corrections of the main correction and the series of auxiliary corrections is not substantially zero , the series of auxiliary corrections Is terminated, and when the value is approximately 0 , the series of auxiliary corrections is continued, and the measurement of the number of determinations is restarted from 0.

According to a fifth aspect of the present invention, the "correction value determining means 4" (FIG. 1) according to the first aspect of the present invention sequentially accumulates the measured values measured by the measuring device 3, and sets the number of the accumulated measured values. When there are more than one, the current correction value is determined based on the latest stored multiple measurement values, and no accumulation of measured values is performed after the current correction value determination time. From the head correction target work to be measured by the measuring machine 3 first among at least one work processed according to the processing conditions affected by the current correction value from the restart time. Until the time when the measurement is finished for the workpiece that has been processed only once,
Each time the work is measured by the measuring machine 3, it is assumed that each of the works has been processed in accordance with the processing conditions affected by the current correction value, based on the actual measurement value of each time and the current correction value. In this case, it is assumed that the measured value of each of the workpieces is predicted, the predicted measured value is regarded as an actual measured value, and the measured value is stored. It has been determined by the
The correction value is supplied to the processing machine control means 2.

The invention of claim 6 is the invention of claim 6
"Correction value determining means 4" (FIG. 1) For measuring machine 3
Accumulates measured values sequentially and sets the number of accumulated measured values
When there are more than one, the latest
Determines the current provisional correction value based on a number of measured values
And the main correction to make it the final correction value, Its main correction
After the end of the main correction
From the processing conditions affected by the final correction value of the main correction
Of at least one workpiece processed according to
To be corrected by the measuring machine 3
Measurement of a workpiece processed only once before
Until the time when the measurement by the fixed machine 3 is completed, the measuring machine
Each time the workpiece is measured by 3, the accumulated latest
Based on multiple measured values, the same
The provisional correction value for each time is determined according to the
The value obtained by subtracting the previous provisional correction value from the
Auxiliary correction is performed to determine the final correction value, and
After the auxiliary correction is completed, the accumulation of measured
From the time of the resumption to the final correction value of the main correction.
Wafers processed only once before the work to be corrected
Until the time when the measurement by the measuring machine 3 is completed.
During that time, every time the work is measured by the measuring machine 3,
Based on the actual measured value of each time and the latest final correction value,
Each workpiece is affected by the latest final correction value.
If it is assumed that it has been processed in accordance with
The value to be measured for the peak
Values shall be considered as actual measurements and stored, and
The "correction value supply means 5" is used by the correction value determination means 4
The final correction value of the determined main correction and auxiliary correction
In order of supply to the processing machine control means 2.
Sign.

According to a seventh aspect of the present invention, the "correction value determining means 4" (FIG. 1) according to the sixth aspect of the present invention measures the number of final correction value determinations in a series of auxiliary corrections, and determines the determined number of determinations. Reaches a set value, if the sum of a plurality of final correction values determined in at least the series of auxiliary corrections of the main correction and the series of auxiliary corrections is not substantially zero , the series of auxiliary corrections Is terminated, and when the value is approximately 0 , the series of auxiliary corrections is continued, and the measurement of the number of determinations is restarted from 0.

[0019]

According to the first aspect of the present invention , as shown in FIG.
In the feedback-type processing condition correction device, it is unavoidable that there is an error in the measured value itself by the measuring machine 3, so that the influence of such an error is removed as much as possible and the true
In the feedback-type machining condition correction apparatus according to the present invention, the correction value determination means 4 sequentially accumulates the measurement values of the measuring device 3, When the number of stored measurement values becomes equal to or more than the set number, the current correction value is determined based on the stored latest plurality of measurement values. Then, the accumulation of the measurement values is restarted from the non-accumulation state. Therefore, in this apparatus, the correction value is determined each time the number of accumulated measurement values becomes equal to or more than the set number, so that the processing machine 1 and the measurement machine 3
Irrespective of whether or not there is a standby work, a plurality of works are sequentially measured by the measuring machine 3, while the correction value for each time is determined intermittently.

Further, in the feedback-type machining condition correction apparatus according to the second aspect of the present invention, as shown conceptually in a graph of FIG.
Measurement values are sequentially accumulated, and when the number of accumulated measurement values becomes equal to or more than the set number, the current correction value is determined based on the accumulated latest set number of measured values. At least one work to be measured by the measuring machine 3 among the at least one work machined in accordance with the machining conditions affected by the current correction value is the measured value after the head correction target work ends its measurement. Is restarted from the non-accumulation state. Therefore, the measured values accumulated up to the determination of the current correction value are only the measured values of multiple workpieces affected by the previous correction value, and the current correction value directly reflects the effect of the previous correction value. It will be decided to reflect.

By the way, the invention of claim 2 is, for example,
In the correction interval period, which is an intermediate period from when the current correction value is supplied to the processing machine control means 2 to when the next correction value is supplied to the processing machine control means 2, the correction value is not determined. The embodiment can be implemented in such a manner that the processing conditions in the means 2 are maintained at the same value. In this case, usually, the magnitude of the current correction value is determined such that the dimensional error of at least one work affected by the current correction value approaches zero as a whole of the works. . For example, when a plurality of workpieces are sequentially processed in accordance with the same processing conditions, it is assumed that the dimensional error of each of the workpieces increases almost in proportion to the increase in the number of workpieces to be measured. The magnitude of the current correction value is determined by actually detecting or estimating the number of standby workpieces existing with the machine 3. Processing machine 1
A technique of actually detecting the number of standby workpieces existing between the measuring apparatus 3 and the apparatus and determining the correction value based on the actual number is described in Japanese Patent Application No. 4-158787 of the present applicant. ing.

However, when the invention of claim 2 is implemented in such a mode, the following problem occurs. That is, when an unexpected change appears in the measured value of the measuring device 3 after the time when the current correction value is supplied, the dimensional error of the work is affected despite the influence of the current correction value. There is a problem that it does not approach 0 sufficiently.

The invention of claim 3 has been made to solve this problem. In the feedback type machining condition correction apparatus according to the invention, as shown conceptually in FIG. By the value determining means 4,
In each intermittent correction, the main correction and the auxiliary correction are sequentially performed.

In the main correction, the measured values obtained by the measuring device 3 are sequentially accumulated, and when the number of accumulated measured values becomes equal to or more than the set plural values, the accumulated set plural measured values are added to the latest set plural measured values. The provisional correction value of this time is determined based on this, and this is used as the final correction value.

On the other hand, in the auxiliary correction, accumulation of the measured values is continued even after the main correction is completed, and after the main correction is completed, processing is performed according to the processing conditions affected by the final correction value of the main correction. In addition, of the at least one workpiece, a workpiece processed only once before the head correction target workpiece to be measured by the measuring machine 3 first before the time when the measurement by the measuring machine 3 is completed. Each time the workpiece is measured by the machine 3, a provisional correction value for each time is determined and determined according to the same rule as the final correction value of the main correction based on the accumulated latest plurality of measured values. A value obtained by subtracting the previous provisional correction value from each provisional correction value is determined as the final correction value for each time.

In this auxiliary correction, the correction value determined according to the same rule as in the main correction is not supplied to the processing machine control means 2 as it is, but is supplied as a difference from the previous provisional correction value. The reason will be described below.

In the auxiliary correction, the final correction value should be determined based on the measured value of the work affected by the main correction performed prior to the auxiliary correction. But,
The work affected by the main correction is not always measured by the measuring machine 3 immediately after processing, but may be measured only after measuring some other work. Therefore, in this feedback-type processing condition correction apparatus, the main processing is performed on the basis of the measured values of each work until the time when the measurement is finished for the work processed once before the head correction target work affected by the main correction. The correction value determined according to the same rule as the correction is not supplied to the processing machine control means 2 as it is, but is supplied after removing the influence of the main correction.
If the correction value determined according to the same rule as the main correction based on each measurement value is supplied to the processing machine control means 2 as it is, the influence of the main correction overlaps and the processing condition of the work to be processed next is duplicated. It will reach to. The relationship between the main correction and the first of the subsequent auxiliary corrections has been described above, but the same applies to the relationship between a certain time in the auxiliary correction and the next time.

In this apparatus, furthermore, the correction value determining means 4 keeps the accumulation of the measured values in the non-accumulated state after the time when the measurement of the head correction target work relating to the final correction value of the main correction is completed by the measuring machine 3. Will be restarted.

That is, in this device, in each intermittent correction, the auxiliary correction is performed after the main correction, so that an unexpected change that appears in the measured value after the main correction is completed can be quickly dealt with. It is becoming.

By the way, the present applicant has proposed to implement the invention of claim 3 in the following manner in order to minimize the increase in the load on the device itself due to the presence of the auxiliary correction. . This is a technique of measuring the number of final correction value determinations in a series of auxiliary corrections and ending the series of auxiliary corrections when the measured number of determinations reaches a set value. However, in the case of performing in this mode, the end time of the auxiliary correction is fixed in relation to the execution time of the main correction. There is a problem that the program may not be executed after the time when it appears. That is, when the invention of claim 2 is compared with a case where the correction value in the intermediate period is determined to be 0, it is possible to reliably cope with an unexpected change in the measured value. In some cases, such effects cannot be obtained.

A fourth object of the present invention is to solve this problem. In a feedback-type machining condition correcting apparatus according to the present invention, a series of auxiliary corrections is performed by a correction value determining means 4. Is determined, and when the measured number of determinations reaches a set value, a plurality of final corrections determined in at least the series of auxiliary corrections of the main correction and the series of auxiliary corrections are performed. If the sum of the value is not substantially zero, the series of auxiliary compensation is terminated, when substantially 0, the measurement of the decision number with a series of auxiliary compensation is continued is restarted from zero.

That is, the fact that the sum of the determined plural final correction values is substantially zero means that at least the auxiliary correction among the main correction and the auxiliary correction this time is useless and is not performed when it is really necessary. This means that the main correction and the auxiliary correction are made more effective by further performing the auxiliary correction.

By the way, when the invention of claim 2 is carried out in a mode in which the correction value in the intermediate period is determined to be 0, there are the following problems.

In this case, the accumulation of the measured values cannot be resumed immediately after the current determination and supply of the correction values.
That is, as shown in FIG. 19, the time taken from the determination and supply time of the current correction value to the determination and supply time of the next correction value (hereinafter, referred to as “correction interval time”) is, as shown in FIG. The time from the processing of the affected head correction target work to the measurement by the measuring machine 3 (processing machine 1
(Equivalent to the number of standby workpieces between the measuring machine 3)
And the time from when the accumulation of the measured values is started to when a plurality of set measured values are accumulated thereafter. Therefore, when it is unavoidable that there are many standby works between the processing machine 1 and the measuring machine 3, it is unavoidable that the correction interval time becomes long. The longer the correction interval time, the greater the number of workpieces to be measured, while the dimensional error of the workpieces generally tends to increase as the number of workpieces to be measured increases, as described above. In the case where the correction value in the intermediate period is determined to be 0, there is a problem that it is inevitable that a work having a somewhat large dimensional error is generated.

The invention of claim 5, be those that have been made as object to solve this problem, in the feedback type processing condition correction device according to the invention, FIG. 21
As conceptually shown in the graph, the correction value determination means 4 sequentially accumulates the measurement values of the measuring device 3, and when the number of accumulated measurement values becomes equal to or more than a set number, the accumulated measurement values are accumulated. The current correction value is determined based on a plurality of measurement values of the latest setting, and after the time of determination of the current correction value,
The accumulation of the measured values is restarted from the non-accumulated state, and from the restart time, the measuring machine 3 first measures the plurality of workpieces processed according to the processing conditions affected by the current correction value. Until the time when the measurement is finished for a workpiece processed only once before the head correction target workpiece, each time the workpiece is measured by the measuring machine 3, the actual measured value of each time and the current correction value And based on
Assuming that each of the workpieces has been processed according to the processing conditions affected by the current correction value, the value measured for each of the workpieces is predicted, and the predicted measurement value is regarded as an actual measurement value. Is accumulated.

That is, in this device, the accumulation of the measured values is restarted without much delay from the current correction value determination time, and the correction interval from the current correction value determination time to the next correction value determination time is set. The time is substantially unaffected by the work existing between the processing machine 1 and the measuring machine 3, and is determined by the number of accumulated measurement values necessary to determine one correction value. The correction interval time can be easily reduced.

A sixth aspect of the present invention is based on the fifth aspect of the present invention, and solves the problem in the case where only the main correction is performed in each intermittent correction, similarly to the third aspect of the invention. In the feedback-type processing condition correction apparatus according to the present invention, FIG.
As shown conceptually in the graph, the correction value determination means 4 sequentially performs the main correction and the auxiliary correction in each intermittent correction.

The main correction and the auxiliary correction are common to the main correction and the auxiliary correction according to the third aspect of the present invention. However, accumulation of measured values is different from accumulation of measured values in the third aspect of the invention.

That is, similarly to the third aspect of the invention, the accumulation of the measured values is restarted from the non-accumulation state after the auxiliary correction is completed. Until the time when the measurement by the measuring machine 3 is completed for the work processed once before the head correction target work related to the final correction value of the above, each time the work is measured by the measuring machine 3, Based on the measured value and the latest final correction value, the value measured for each of the workpieces is estimated when it is assumed that each of the workpieces has been processed according to the processing conditions affected by the latest final correction value. The predicted measurements are considered as actual measurements and are stored.

Therefore, in this apparatus, even if a standby work exists between the processing machine 1 and the
The was ignored, it is possible to determine each time the final correction value in a main correction and an auxiliary correction.

The invention of claim 7 is based on the invention of claim 6 and solves the problem in the case where the number of determinations of the final correction value in the auxiliary correction is limited, as in the invention of claim 4. In the feedback-type machining condition correction apparatus according to the present invention, the number of determinations of the final correction value in the series of auxiliary corrections is measured by the correction value determination means 5, and the measured number of determinations is When the sum of the final correction values determined in at least the series of auxiliary corrections of the main correction and the series of auxiliary corrections when the set value is reached is not substantially zero , the series of auxiliary corrections is terminated. If the value is substantially zero , the series of auxiliary corrections is continued, and the measurement of the number of determinations is restarted from zero.

[0042]

As is clear from the above description, according to the first to seventh aspects of the present invention, the correction value of the processing condition is determined intermittently, and the load on the apparatus itself is reduced. If both, not only current measurement values the past measurements
It is possible to determine the correction value this time in consideration of
This has the effect of improving the accuracy of machining condition correction.
You.

In addition, according to the second aspect of the present invention, the present correction value can be determined by directly reflecting the influence of the dimensional error of the work affected by the previous correction value. Since it is possible to determine the current correction value in consideration of not only the current measurement value but also the past measurement value, the effect of improving the correction accuracy of the processing conditions can be obtained.

According to the third aspect of the present invention, in implementing the second aspect of the present invention, the auxiliary correction is performed after the main correction, so that the effect of improving the accuracy of the processing conditions can be obtained. .

According to the fourth aspect of the present invention, at the time of carrying out the third aspect of the invention, even if the scheduled auxiliary correction is completed, at least the execution timing of the auxiliary correction among the main correction and the auxiliary correction is determined. If the correction is not appropriate, the auxiliary correction is continued, and the effect of improving the correction accuracy of the processing conditions is also obtained.

According to the invention of claim 5 , the processing machine 1
And ignore the presence of the workpiece between the measuring machine 3 and it is possible to determine each time the correction value, the length of the correction interval time between the present correction timing and the next correction time easily It can be shortened. Between the length and workpiece dimensional error correction interval time, if it is not possible to ignore the presence of the (solid line the work as shown conceptually in the graph in FIG. 26, a dashed invention of claim 5 In the present invention, the shorter the correction interval time, the smaller the maximum value of the dimensional error of the work in each intermittent correction is. Therefore, according to the present invention, the work time can be reduced by shortening the correction interval time. In addition, the effect that the dimensional error of can be easily reduced can be obtained.

According to the sixth aspect of the present invention, in carrying out the fifth aspect of the present invention, since the auxiliary correction is performed following the main correction, the effect of improving the accuracy of processing condition correction can be obtained. .

According to the seventh aspect of the present invention, at the time of implementing the sixth aspect of the invention, at least the execution timing of the auxiliary correction among the main correction and the auxiliary correction is appropriate even if the planned auxiliary correction is completed. If not, the auxiliary correction is continued, so that the effect of improving the correction accuracy of the processing condition can be obtained.

[0049]

EXAMPLES hereinafter be described in detail with reference to the accompanying drawings sizing point correction apparatus of the feedback type which is common to an embodiment to the invention of claim 1-7.

This fixed point correction device is used together with a machining system for processing a crankshaft of an automobile engine as a workpiece to be machined and cylindrical grinding each of a plurality of journal surfaces formed in advance as machining sites. As shown in FIG. 2, the crankshaft is a work having a journal surface that is seven outer peripheral cylindrical surfaces (hereinafter, simply referred to as “cylindrical surfaces”) arranged coaxially with each other.

Specifically, as shown in FIG. 3, the processing system includes a processing line, a processing machine 10, two in-process measuring machines 12 (shown as one in the figure), a sizing device 14,
It comprises a motor controller 15, a total measuring machine 16, a work counter 18, a control device 20, an auxiliary storage device 22, and the like. These components will be described individually below.

The processing line is represented by a thick solid line with an arrow in the figure, and a plurality of works are arranged in a line and transported from upstream to downstream (from left to right in the figure). It is.

The processing machine 10 performs cylindrical grinding on each of the seven journal surfaces of the crankshaft using a circular grindstone as a processing tool. Specifically, as shown in FIG. 4, a plurality of grindstones 3 are arranged coaxially.
By rotating contact 0 and the crankshaft,
This is a multi-grinding machine that simultaneously performs cylindrical grinding on all seven journal surfaces. Hereinafter, the configuration will be briefly described.

The processing machine 10 has a work table 32 for a work. The work table 32 is attached to a main frame (not shown) of the processing machine 10.
The work table 32 is provided with a holding device (not shown) for holding the work rotatably around its axis and a work motor 34 for rotating the held work.

The processing machine 10 further includes a forward / retreat table 36 for the grindstone group 30 and a swing table 38. The forward / backward table 36 is attached to the main frame so as to be capable of reciprocating in a direction perpendicular to the work held on the work table 32. On the other hand, the swing table 38 has a swing axis (a straight line extending in a direction perpendicular to the plane of the paper in the figure) set on the advance / retreat table 36 on a grinding wheel axis (indicated by an alternate long and short dash line in the figure) so as to be orthogonal thereto.
Swing around (possible right or left rotation)
It is attached in a state. Forward / retreat table 36
Forward / reverse motor 4 fixed to the main frame
Due to 0, the swing of the swing table 38 is realized by the swing motor 42 fixed to the forward / retreat table 36, respectively.

That is, in the processing machine 10, the angle formed by the axis of the grindstone and the axis of rotation of the workpiece (hereinafter referred to as “cutting angle”) can be adjusted by the swing motor 42.

The two in-process measuring machines 12 are mounted on the processing machine 10. As shown in FIG. 2, each of the in-process measuring machines 12 has a pair of measuring elements sandwiching one cylindrical surface from both sides of the outer periphery, and measures the diameter of the cylindrical surface by an electric micrometer method. . These in-process measuring machines 12 are not individually prepared for the seven journal surfaces, but as shown in the figure, the journal surfaces at both ends, that is, the first journal surface and the seventh journal surface (hereinafter, referred to as “the journal surface”). (Also referred to as "two end cylindrical surfaces").

The sizing device 14 is, as shown in FIG.
Each of these in-process measuring machines 12 is connected. The sizing device 14 is mainly composed of a computer including a CPU, a ROM, a RAM, and a bus. During the grinding by the processing machine 10, the diameters of the two end cylindrical surfaces are measured via the in-process measuring machines 12. When the remaining cutting amount (the amount that needs to be cut to reach the final dimension) on each end cylindrical surface reaches each set amount (existing for each end cylindrical surface), a signal to that effect is sent. (Hereinafter, referred to as “set amount reaching signal”), when reaching each final dimension, that is, each fixed point (existing for each end cylindrical surface), a signal to that effect (hereinafter, referred to as “fixed point reaching signal”). ) Is output to the motor controller 15 in association with each end cylindrical surface.

The sizing device 14 is also designed so that each sizing point can be corrected. Specifically, when each correction value U (existing for each end cylindrical surface) is supplied from the control device 20, the current correction value U is added to the current fixed size point to thereby obtain the current correction value U. It is designed to update the sizing points and keep each current sizing point intact if not supplied. That is, the sizing device 14 is configured so that the sizing point is automatically corrected by the control device 20.

As shown in FIG. 3, a keyboard 50 is connected to the sizing device 14, and when the keyboard 50 is operated by an operator, the sizing device 14 sets a manual correction value according to the operation. It is also designed to make manual corrections that only change the current sizing point. The sizing device 14 also
The latest manual correction value and the fixed size point are stored in their own RAMs, and are transmitted to the control device 20 spontaneously.
However, since the control device 20 does not always receive the latest manual correction value and the current sizing point from the sizing device 14, the sizing device 14 transmits data only when the control device 20 permits reception. Will do.

As shown in FIG. 4, the motor controller 15 is connected to the sizing device 14, the forward / backward motor 40, and the like. The motor controller 15 controls the forward / backward motor 40 and the like based on a command from an operator, a signal from the sizing device 14, and the like.

By the way, the processing machine 10 finishes one cylindrical grinding through several stages such as rough grinding, fine grinding, spark-out and the like in order. The rough grinding is performed until the remaining depth of cut reaches the set amount, and the fine grinding is performed until the diameter reaches the fixed size point. Generally, the two set amount reaching signals to be supplied from the sizing device 14 for each end cylindrical surface have different supply timings, and the motor controller 1
5 controls the forward / backward motor 40 and the swing motor 42 in accordance with the amount of mismatch of the signal supply timing in the rough grinding stage, thereby appropriately controlling the cutting angle. In the fine grinding, the cutting angle should be appropriate in the rough grinding preceding the fine grinding. Therefore, the motor controller 15 drives only the forward / reverse motor 40 to cut the grinding wheel group 30 into the workpiece. Continue, 2
If a fixed point arrival signal is supplied to any of the end cylindrical surfaces, the forward / reverse motor 40 is stopped, and after performing spark-out, the forward / reverse motor 40 is rotated in the reverse direction. 30 is retracted from the work. It is to be noted that the cutting angle can also be controlled at the fine polishing stage.

As shown in FIG. 3, the total number measuring machine 16 is disposed downstream of the processing machine 10 on the processing line. The total measuring machine 16 has the same number of post-process measuring machines 44 as the number of cylindrical surfaces in one work, and in the same manner as the in-process measuring machine 12, all the works carried out from the processing machine 10 in order, The diameter is measured individually for all cylindrical surfaces. The total number measuring device 16 is connected to the input side of the control device 20.

As shown in the figure, the work number counter 18 measures the number of standby works between the processing machine 10 and the total measuring machine 16 on the processing line and waiting for the measurement by the total measuring machine 16. It is. Work counter 1
Reference numeral 8 denotes a first sensor (for example, a limit switch or the like) 46 for detecting the unloading of the work from the processing machine 10 and a second sensor (for example, a limit switch or the like) 48 for detecting the transfer of the work to the 100% measuring machine 16. The count value of the number of standby works is incremented by one each time the first sensor 46 detects that the work is carried out, and the count value is incremented each time the second sensor 48 detects that the work is carried in. Is subtracted one by one, whereby the current value of the number of waiting works is measured.

The control device 20 includes a CPU, a ROM, an R
It is mainly configured by a computer including an AM and a bus, and its ROM stores a fixed size point correction routine in advance. Further, the control device 20 is also connected to the auxiliary storage device 22, and
6 is designed to store all of the measured values X input from 6 and the correction values U determined based on the measured values X. This is for use when the operator diagnoses the processing status after a series of processing is completed.

The main part of the fixed point correction routine is shown in FIGS.
10 is a flowchart, and the configuration of the control device 20 will be described with reference to those drawings.

The controller 20 feeds back the dimension information based on the dimension measured by the 100% measuring machine 16 to determine the correction value U of the fixed dimension point for the work to be processed next by the processing machine 10. Is what you do. This processing system is designed to allow a workpiece waiting for dimensional measurement to exist between the processing machine 10 and the total number measuring machine 16. Therefore, the control device 20 assumes a control system in which an input signal is a correction value U, an output signal is dimensional information, and a dead time MS exists between the input signal and the output signal. Correct points. That is, in the present embodiment, the fixed size point is one aspect of the “machining conditions” in the inventions of the respective claims.

The flow of processing in the control device 20 is as follows.
Briefly, this is as shown in FIG.

First, as a first step, a 100% measuring machine 1
Then, as a second step, a moving average value P is calculated with respect to the measurement values X obtained so far in order to remove the inter-adjacent variation from the measurement values X as a second step. You. The measured value X is stored in the RAM of the computer.
Is provided, and a moving average value P is calculated based on the measured values X stored therein.

Next, as a third step, both ends diameter correction (to be described in detail later) is performed on the moving average value P, and
Further, as a fourth step, the current error value R, differential value T, and second-order differential value D are calculated based on the plurality of moving average values P (both of which are also stored in the calculation data memory) whose both ends have been corrected. Are calculated as dimensional information. Thereafter, as a fifth step, a correction value U is calculated by fuzzy calculation based on the dimensional information and the number of standby workpieces (corresponding to the dead time MS) measured by the workpiece counter 18. Subsequently, as a sixth step, the correction value U is corrected by considering its continuity, and as a seventh step, the correction value U is set in relation to the sizing device 14. It is determined whether or not it is within the dead zone.
As an eighth step, the correction value U is transmitted to the sizing device 14.

The control device 20 employs an intermittent correction, which is determined intermittently, instead of a continuous correction, which determines the current correction value U every time the workpiece is measured by the 100% measuring device 16. I have. Further, as the correction value U is intermittently corrected, the operation data memory is also intermittently cleared.

It should be noted that the control device 20 includes a work 7
The measurement values X are individually input for all the journal surfaces, but basically, based on the measurement values X of the first and seventh journal surfaces, that is, the measurement values X of the end cylindrical surfaces. Thus, a correction value U corresponding to each cylindrical surface of the sizing device 14 is determined.

The overall flow of the control device 20 has been briefly described above. Hereinafter, each concept in this flow will be individually described in detail.

First, the calculation of the moving average value P will be described. The measurement value X is acquired as time-series data by the 100-measuring device 16 and includes many inter-adjacent variations. Therefore, in the present embodiment, in order to remove the inter-adjacent variation and estimate the true dimension of the work, the present measured value X and the latest at least one measured value X obtained up to the previous time are shown in FIG. 12, a weighted moving average value P is calculated and used as the true value of the measured value X, as conceptually shown in a graph in FIG. In this graph, "i"
Represents the number of works measured by the total number measuring machine 16 (hereinafter, referred to as “measured work number”). The same applies to other graphs.

The moving average value P is calculated in principle as follows. That is, based on the latest K (fixed value of 2 or more) measured values X obtained up to this time, the current moving average value is calculated using a calculation formula represented by the following equation (when K = 5). _Pi is calculated.

[0076]

(Equation 1)

However, when this principle is adhered to, the moving average value P cannot be calculated while the number of measured values X stored in the operation data memory does not reach K.
As shown in (1), it is impossible to calculate both the error value R and the differential value T to be calculated by using this, and the time during which a new correction value U cannot be determined becomes longer. Note that this figure shows that the number i of measured workpieces increases from the left side to the right side. The same applies to FIGS. 14 and 15 described later.

Therefore, in the present embodiment, when the number of measured values X stored in the operation data memory does not reach K, according to a special rule different from the case where the number of measured values X does not reach K.
A moving average value P is calculated.

The special rules include a substitution type moving average value calculation rule and a variable type moving average value calculation rule. The details will be described below.

First, the rules for calculating the displacement type moving average are shown in FIG.
As shown in FIG. 4, each of the K moving averages P that are expected to exist and those that do not actually exist are replaced with each moving average P
Is replaced with the measured value X itself acquired at the same time as the time when it should be acquired. This is based on the property that the measured value X and the moving average value P acquired at the same time are originally close to each other, and the calculation of the moving average value P in accordance with this rule is a replacement type moving average value calculation. That.

In this replacement-type moving average calculation, whether the time when the moving average P is replaced each time is a little before the time when the moving average P is calculated in principle for the first time thereafter, Regardless of whether it is a long time ago, it is possible to virtually obtain the moving average value P by replacing it with the measured value X. However, in this case, there are the following problems. That is, as the ratio of the virtually calculated moving average value P to the L moving average values P used to calculate one differential value T increases, the accuracy of the differential value T decreases. Thus, there is a problem that the accuracy of the correction value U may be reduced.

In order to solve this problem, the number of virtual moving average values P used for obtaining one differential value T may be limited. The example shown in the figure is an example in which such a restriction is given. In this case, only the past three times from the latest normal moving average value P (that is, the replacement restriction number Z is 3). Calculation of the virtual moving average value P is permitted. In such a case, even if the displacement-type moving average value is calculated, the moving average value P is calculated while the number of measured values X stored in the operation data memory is small. Can not.

On the other hand, the variable-type moving average calculation rule prepares a weighted moving average calculation formula individually for each of the numbers of measurement values X (a number smaller than K), and stores the weighted moving average calculation formula in the calculation data memory. Select a formula that matches the number of values X,
It is a rule that the moving average value P is obtained by using it (see FIG. 15). Calculating the moving average value P according to this rule is referred to as variable moving average value calculation. For example, the following formulas can be selected as the weighted moving average calculation formulas individually prepared.

[0084]

(Equation 2)

In this example, even if the number of measured values X stored in the operation data memory is one, the moving average value P can be calculated. Therefore, in this example, a situation does not occur in which the moving average value P cannot be calculated because the number of measured values X stored in the operation data memory is small.

In this embodiment, the operator instructs whether or not to execute the above-described calculation of the moving average value P by a special method (hereinafter, referred to as “special moving average value calculation”). When the calculation of the special moving average value is instructed, the type is also selected in accordance with the instruction from the operator. That is, whenever the special moving average value calculation command is issued, either the replacement type moving average value calculation command or the variable moving average value calculation command is issued.

Here, a method of determining the weight coefficient b in the above-described weighted moving average value calculation formula will be described.

The value of each weighting factor b is determined in relation to the frequency of the component wave to be removed from the measured value X that is the original variation. For example, the value of each weighting factor b is multiplied by the value. It can be determined that the more recent the measured value X to be taken with respect to the latest measured value X, the more it will increase approximately proportionally (see FIG. 12). For example,
_{b i-4, b i-} 3, b i-2, b i-1 and b _i respectively, it is possible to 1, 2, 3, 4 and 5.

Further, as in the case where the number of standby workpieces existing between the processing machine 10 and the total number measuring machine 16 is 0, or even if it is not 0, it hardly changes, the measured value is calculated by the moving average. When the frequency of the component wave to be removed from X hardly changes, the value of each weight coefficient b can be determined as follows, for example.

First, the angular frequency of each of the s component waves to be removed from the measured value X which is the original variation is represented by ω ₁ , ω ₂ ,.
···, ω _j , ···, ω _s

[0091]

(Equation 3)

Then, the coefficient 1, a _s−1 ,.
·, A _0, ..., respectively 1 to a ₀ of a _s-1, 1, the weighting factor _{b is, b i- (s-} 1), is to determine ..., to b _i .

In the machining system to which the control device 20 is connected, as described above, the grindstone group 30 is operated based only on the diameter of two end cylindrical surfaces of the entire cylindrical surface of the work. Therefore, when the fixed point is corrected without considering the measured values X of the two end cylindrical surfaces and without considering the measured values X of the other cylindrical surfaces, the processing accuracy of each cylindrical surface is determined by the overall accuracy. May not be sufficiently uniform.

Therefore, in the present embodiment, the following technique is adopted to solve this problem. That is, as conceptually shown in the graph of FIG. 16, the positions of the cylindrical surfaces of the workpiece in the axial direction ("1J" to "7J"
) And the diameter of each cylindrical surface (ie, moving average value P)
Is assumed to be in a proportional relationship, and a technique called end diameter correction, which corrects the measured values X of the two end cylindrical surfaces, is employed.

A specific example of the end diameter correction is as follows. That is, as a formula for correcting the diameter at both ends,

[0096]

(Equation 4)

The correction value of the moving average value P of each end cylindrical surface is calculated by using the following expression. Where x: number of the journal surface (numbered from 1 to 7 from the first journal surface to the seventh journal surface) x ': average value of seven x values y: movement at each value of x Corrected value of average value P: Calculated value of moving average value P for each value of x P ': Average value of calculated values of seven moving average values P

Specifically, for the first journal surface, the correction value y ₁ of the moving average value P is obtained by substituting 1 for “x” in the above equation, and for the seventh journal surface, , "X" by substituting 7
Correction value y ₇ of the moving average values P are obtained.

In this embodiment, the operator is also instructed whether or not to execute the correction of the diameter at both ends.

In this embodiment, the moving average value P
The diameter of both ends is corrected for
Both ends diameter correction can also be performed on the measured value X itself which is the basis of the moving average value P.

As described above, the dimension information acquired for the work includes not only the error value R but also a differential value T thereof and a twice differential value D which is a differential value of the differential value T. The error value R is an aspect of “dimensional error”, the differential value T is an aspect of “change tendency of dimensional error”, and the twice differential value D is an aspect of “change tendency of change tendency”.

As described above, the determination of the correction value U based on parameters other than the error value R is different from the determination of the correction value U based only on the error value R in comparison with the differential value T of the correction value U. Alternatively, when the correction value U is determined based on the twice differential value D, the actual state of the processing machine 10 can be more accurately estimated, and the correction accuracy of the fixed point is improved. . The technique of determining the correction value U based on not only the error value R but also the differential value T is disclosed in Japanese Patent Application No. Hei.
A technique for determining the correction value U based on the second-order differential value D has been filed as Japanese Patent Application No. 4-235402 of the present applicant.

As shown conceptually in the graph of FIG. 17, the differential value T is, as a rule, the error value R acquired this time and the latest at least one error value R acquired up to the previous time.
It is assumed that L (two or more fixed values) error values R are substantially proportional to the increase in the number i of the measured workpieces.
The primary regression line to which the error values R match is specified, and the gradient thereof is obtained as a differential value T (which matches tan θ when the gradient of the primary regression line is θ radian). Specifically, as an equation of the linear regression line, for example,

[0104]

(Equation 5)

The following equation is adopted. Where x: the value of the number i of the measured workpieces x ': the average value of L x values y: the true value of the error value R at each value of x R: the calculated value R of the error value R at each value of x ': Average value of the calculated values of the L error values R

[0106]

(Equation 6)

Is the differential value T. However, according to this principle, if the number of error values R stored in the operation data memory does not reach L, the differential value T should be calculated as in the case of calculating the moving average value P. Can not.

Therefore, in the present embodiment, in accordance with the calculation of the moving average value P, an equation for the primary regression line is prepared for each of the number of moving average values P (a number smaller than L). A technique is adopted in which an equation that matches the number of error values R stored in the operation data memory is selected, and a differential value T is obtained using the equation.

In this embodiment, whether or not the execution of the variable differential value calculation is permitted is instructed by the operator.

The second derivative D is calculated in the same manner as the differential T. That is, the latest Q (2
Assuming that the above (fixed value) differential values T are substantially proportional to the increase in the number i of measured workpieces, a primary regression line to which the Q differential values T fit is specified, and the gradient thereof is set twice. Derivative value D (tan θ when the slope of the primary regression line is θ radian)
To match).

In this embodiment, the second derivative D
The permission or rejection of the use of the device is also instructed by the operator.

Further, in the present embodiment, the technique of calculating the variable differential value relating to the differential value T is not adopted for the second differential value D, but it is of course possible to employ it.

In this control device 20, techniques for intermittent correction, correction considering dead time, fuzzy calculation, continuity consideration, and dead zone consideration are employed for determining the correction value U. Hereinafter, each of them will be described in detail.

(1) Intermittent Correction In correcting the fixed size point, every time the dimension of the work is measured by the 100% measuring machine 16, the correction value U of the fixed size point of the work to be processed next by the processing machine 10 is changed. It is possible to adopt a correction method of determining continuous correction. However, when this continuous correction is adopted, there are the following problems. That is, since it is necessary to individually determine the correction value U for all of the workpieces measured by the total number measuring device 16,
There is a problem that a large load is imposed on the control device 20.

In order to solve this problem, in the present embodiment, a correction method of intermittent correction is employed. This intermittent correction is conceptually shown in a graph in FIG. This graph is acquired when there are a plurality of standby works between the processing machine 10 and the total number measuring machine 16. In this graph, “measurement delay” means that the processing machine 10 and the total number measuring machine 16 And the number of standby works between the two. Also,
“U _i ” represents the current correction value, and “U _{i + 1} ” represents the next correction value. Therefore, the current correction value U _i
Does appear in the dimensional error only after the delay in measurement, and similarly, the effect of the next correction value U _{i + 1} also appears in the dimensional error only after the delay in measurement. Further, when a plurality of workpieces are processed in order under the same fixed point, they are obtained on the assumption that the dimensional error of each of the workpieces increases almost proportionally to the increase in the number i of the measured workpieces. It is also a thing. The same applies to the following graphs.

The present applicant has devised two modes as a system for performing the intermittent correction. Hereinafter, each of these methods will be described in detail.

First Method of Intermittent Correction This fixed point correction apparatus is used together with a processing system that allows the existence of a work between the processing machine 10 and the total number measuring machine 16 as described above. Therefore, the work machined under the fixed point affected by the previous correction value U is not always measured by the 100-measurement machine 16 immediately thereafter, but is measured by some other work. It may be measured only after passing through. Therefore, when it is necessary to directly reflect the influence of the previous correction value U on the current correction value U, at least one of the machining points below the fixed size point affected by the previous correction value U is required. The number of workpieces is 100%
It is desirable to determine the current correction value U every time the measurement is performed by the step S6.

Against this background, the first method accumulates the measured values X by the all-in-one measuring device 16 successively as shown conceptually in a graph of FIG.
Is larger than the set number, the current correction value U _i is determined based on the accumulated latest set values X, and is affected by the current correction value U _i. After the time at which the head correction target work, which is to be measured first by the 100% measuring machine 16 among the at least one work processed under the fixed size point, finishes its measurement (for example,
Immediately after the end of the measurement), the accumulation of the measured value X is restarted from the non-accumulation state.

In this method, for example, after the current correction value U _i is determined and transmitted to the sizing device 14, the next correction value U _i is determined.
During the correction interval period from the determination of _{i + 1} to the transmission to the sizing device 14, the correction value U is not determined, and the sizing point in the sizing device 14 is maintained in the same value. be able to. Then, in this case, the magnitude of the current correction value U _i is usually equal to the current correction value U under the premise that a proportional relationship is established between the number i of measured workpieces and the dimensional error.
The dimensional errors of the plurality of workpieces affected by _i are determined so as to approach 0 almost uniformly as a whole.

However, this embodiment has the following problems. In other words, there is a problem that the timing of executing each correction is uniquely determined by the number of accumulated measurement values X irrespective of the actual fluctuation of the measurement value X, and the correction is not executed at the time when it is really necessary. It will happen.

In order to solve this problem, a dead zone is set in relation to the sizing device 14 when transmitting the correction value U, and when the determined correction value U is substantially 0 , the correction value The correction value U may be determined again without transmitting the U to the sizing device 14 and waiting for the acquisition of a new measured value X without clearing the operation data memory. In this way, each correction is executed in a timely manner when it is really necessary. The technique of setting a dead zone in the correction value U is disclosed in Japanese Patent Application No. 4-278146 of the present applicant.
No. has been filed.

However, even in this case, if an unexpected change occurs in the measured value X after the end of each correction, the fixed size point cannot be corrected immediately in response to the change. . If an unexpected change occurs in the measured value X after the end of each correction, the unexpected change is accumulated in the calculation data memory and reflected on the next correction value U _{i + 1} , In this way, unless the user waits for the next correction, the fixed size point cannot be corrected in response to the unexpected change. Therefore, after completion of each correction, the measured value X
In the case where an unexpected change occurs, there is a problem that the dimensional error of the work does not sufficiently approach zero.

To solve this problem, the first method may be implemented in the following manner. That is, FIG.
As conceptually shown in a graph at 0, one intermittent correction is performed after the main correction, which is the intermittent correction in the above-described embodiment (for example, determining “U _i ” in FIG. 19), followed by the auxiliary correction. In this case, the fixed size point may be corrected in such a manner that the fixed size point is promptly corrected by the auxiliary correction to the unexpected change that occurs in the measured value X after the main correction is completed.

Here, the "main correction" means that the measured values X by the all-in-one measuring device 16 are successively accumulated, and when the number of accumulated measured values X becomes equal to or more than a set number, the latest accumulated values are stored. The provisional correction value U based on the plurality of measured values X
_P is determined and used as the final correction value U _F.

The "auxiliary correction" means that the accumulation of the measured value X is continued even after the main correction is completed, and after the main correction is completed (for example, immediately after the main correction is completed), the main correction is performed. first all measuring machine 1 among at least one workpiece which has been processed under the sizing point affected the final correction value U _F
Until the time when the measurement is completed for the work processed only once before the head correction target work to be measured by 6 (for example, until the time when the measurement is completed), the work is measured by the total number measuring machine 16. each time it is measured, on the basis of the stored latest settings plurality of measurement values X, to determine each time the provisional correction value U _P according to the same rules as in the main correction from each round of the provisional correction value U _P that the determined it is to determine minus the preceding temporary correction value U _P to a final correction value U _F each time.

[0126] In the auxiliary compensation, without being transmitted is determined according to the same rules as in the main correction correction value U provisional correction value U _P is as sizing device 14, from the previous provisional correction value U _P The difference is supplied as a difference. The reason will be described below.

In the auxiliary correction, the final correction value U _F should be determined based on the measured value X of the work affected by the main correction performed prior to the auxiliary correction. However, the work affected by the main correction may not be measured by the 100% measuring machine 16 immediately after processing, but may be measured only after measuring some other work.
Therefore, in the present embodiment, the influence of the main correction overlaps and is not performed once at the fixed size point corresponding to the work to be processed next, but only once before the head correction target work related to the main correction. Until the time when the measurement of the processed workpiece is completed, the correction value determined according to the same rule as in the main correction based on the measured value X of each time is a provisional correction value _UP.
Those with the then the influence of the main correction is removed there is a final correction value U _F. The relationship between the main correction and the first time of the auxiliary correction has been described above, but the same applies to the relationship between a certain time in the auxiliary correction and the next time.

However, in the mode in which the main correction and the auxiliary correction are performed, the auxiliary correction is always performed until the end of the intermittent correction to which the auxiliary correction belongs, that is, immediately before the start of the next main correction. In the case, the control device 20
A problem arises in that a relatively large burden is imposed on oneself.

To solve this problem, the number of executions of the auxiliary correction may be limited. That is, the number of determinations of the final correction value U _F measured in a series of auxiliary compensation, than may be terminated the series of auxiliary compensation is when it reaches a set value determined number of times of the measurement. However, with this measure,
The end time of the auxiliary correction is fixed in relation to the end time of the main correction, and the execution time of the auxiliary correction is optimal to respond to an unexpected change in the measured value X after the end of the main correction. There is a problem that is not limited.

To solve this problem, the auxiliary correction may be performed in the following manner. That is, similarly to the final correction value U _F in the main correction, a dead zone in relation to the sizing device 14 is provided in the final correction value U _F in the auxiliary correction, and the final correction value U _F determined at the beginning of the series of auxiliary corrections is provided. _{If F} is within its dead zone, it does not send its final correction value U _F to the sizing device 14, effectively does not start performing the series of auxiliary corrections, and then determines the final correction value U _F determined thereafter. There the first time when deviated from the dead zone, and sends the final correction value U _F, is the may be performed in a manner to start execution of the series of auxiliary compensation.

However, with the above-described operations, the execution timing of the main correction and the auxiliary correction does not sufficiently coincide with the fluctuation time of the measured value X, and the main correction and the auxiliary correction are not executed at the time when they are really needed. There is. In order to avoid such a situation, the auxiliary correction may be performed in the following manner. That is, the final correction value U in a series of auxiliary corrections
_When the number of determinations of _F reaches the set value, when the sum of the plurality of final correction values U _F determined in at least the series of auxiliary corrections of the main correction and the series of auxiliary corrections is not substantially 0 , Although it terminates the series of auxiliary compensation, substantially 0
If it is, at least from the execution timing of the series of auxiliary compensation it is estimated that was not appropriate, and continue the auxiliary correction, new measurements of the number of determinations of the final correction value U _F in a manner starting from 0 You just have to do it.

In this embodiment, as a method of determining a correction value, one of a system in which only the main correction is performed and no auxiliary correction is performed and a system in which not only the main correction but also the auxiliary correction is performed are instructed by the operator. Is selected according to That is, if the auxiliary correction command is issued, the latter method is selected, and if not, the former method is selected.

Further, in this embodiment, as a method of the auxiliary correction, either a method of continuing the auxiliary correction or a method of not performing the auxiliary correction is selected according to a command of the operator. I have.

[0134] Furthermore, in the present embodiment, as continuing method of the auxiliary compensation, method to continue assisting correction taking into account the dead zone for the final correction value U _F of first auxiliary compensation to be continued (hereinafter, " Auxiliary correction restart method ”)
And a method of continuing without considering the dead zone (hereinafter, referred to as an "auxiliary correction extension method") is also selected according to a command from the operator. The command for selecting the former method is called the auxiliary correction restart command, the command for selecting the latter method is called the auxiliary correction extension command, and if none of those commands is issued, the auxiliary correction It is determined that the continuation permission command has not been issued.

Second Method of Intermittent Correction In the case where the intermittent correction is performed by the above-described first method, if there is a standby work between the processing machine 10 and the total measuring machine 16, the current correction is performed. It is not possible to start accumulating the measured value X immediately after the determination of the value U. Therefore, the time (hereinafter, referred to as “correction interval time”) required from the present correction value U determination time to the next correction value U determination time is as shown in FIG.
As shown in (1), the time required for the head correction target work related to the current correction value U to reach the all-in-one measuring device 16 (corresponding to the number of standby works existing between the processing machine 10 and the all-in-one measuring device 16) and Thereafter, the sum of the time from when the accumulation of the measured values X is started to when the plurality of set measured values X are accumulated is obtained. Therefore, when it is unavoidable that there are many standby workpieces between the processing machine 10 and the total number measuring machine 16,
It cannot be avoided that the correction interval time becomes long.

This second method has been devised to solve this problem. As shown conceptually in a graph of FIG. 21, the measurement values X by the 100-measuring device 16 are sequentially accumulated, When the number of stored measurement values X is equal to or more than a plurality of setting values, the latest stored plurality of measurement values X are stored.
The current correction value U is determined on the basis of the current correction value U. After the current correction value U is determined (for example, immediately after the current correction value U is determined), the accumulation of the measured value X is restarted from the non-accumulation state. ,
An intermediate point from the restart time to the vicinity of the time when the measurement is completed (just before or slightly after the time) for the work processed once before the work to be corrected for the head related to the current correction value U. Each time the work is measured by the total number measuring device 16, the period is based on the actual measurement value X of each time and the current correction value U, and each work is affected by the current correction value U. When it is assumed that the workpiece is machined under the dimension point, the value measured for each of the workpieces is predicted, and the predicted measured value X is replaced with the actual measured value X.
And accumulate. In this embodiment,
As an example of the prediction, a data shift process of shifting the actual measurement value X by the current correction value U by adding the current correction value U to the actual measurement value X in the intermediate period is adopted. .

In the second method, as in the first method, one intermittent correction includes a main correction and an auxiliary correction with a limited number of times and which can be continued (this is shown in FIG. 22). This is implemented as a mode in which a concept of dead zone is adopted for the main correction and the auxiliary correction, and a method of continuing the auxiliary correction can be selected. In the present embodiment, the first method and the second method can be selected according to a command from an operator. Specifically, the operator instructs whether or not to permit the data shift processing, and when the operator permits the data shift processing, the data shift processing is selected, and when not permitted, the first method is selected.

It should be noted that the second method is a measurement value prediction technique, that is, of at least one work machined under the fixed size point affected by the previous correction value U, the current method. After each correction value U is determined, each of the workpieces measured by the all-in-one measuring device 16 is subjected to the influence of the current correction value U based on the actual measurement value X of each time and the current correction value U. It is obtained by applying the technique of predicting the measurement values to be obtained for each of these workpieces assuming that they have been processed under the received fixed size point, by applying it to intermittent correction. The measurement value prediction technique can also be applied to the continuous correction.

When a standby work exists between the processing machine 10 and the total measuring machine 16, the work affected by the previous correction value U is immediately applied to the total measuring machine even when performing the continuous correction. The situation is the same that the measurement cannot be performed by using No. 16. Therefore, in this case, the current correction value U is determined by a statistical method based on experimental results, simulation results, and the like. And, instead of or along with the statistical method,
This measurement value prediction technique can be used.

(2) Time-Delay Consideration Correction When the number of standby workpieces waiting for measurement by the total number measuring machine 16 fluctuates, even if a plurality of workpieces are machined under the same fixed point, Dimensional error fluctuates. Therefore, in the present embodiment, the number of the standby workpieces is measured as the dead time MS, and the rule for determining the correction value U is changed accordingly, so that the dead time consideration type correction for determining the correction value U for each time is also performed. Has been adopted. This technology,
It has been filed as Japanese Patent Application No. 4-158787 of the present applicant.

In this embodiment, the operator is also instructed whether or not to execute the dead time consideration type correction.

(3) Determination of Correction Value U Using Fuzzy Calculation The correction value U is determined by performing a fuzzy calculation using dimensional information as an input variable.

In the present embodiment, there are three methods for determining the correction value U. That is, a first decision method based on a fuzzy operation using only the error value R and the differential value T as input variables, and a second decision method based on a fuzzy operation using the error value R, the differential value T and the second derivative value D as the input variables. And a third determination method based on fuzzy arithmetic using the error value R, the differential value T, and the dead time MS as input variables. In the present embodiment, the second decision method is issued when the twice differential value use command is issued, and the third decision method is issued when the dead time consideration correction command is issued. Is not issued, the first determination method is selected.

A specific example of the first determination method has already been disclosed in the specification of Japanese Patent Application No. 4-61305 of the present applicant, and a specific example of the second determination method is described in the present application. 4-235
A specific example of the third determination method has already been disclosed in Japanese Patent Application No. 4-158787 of the present applicant.

(4) Continuity Consideration As described above, since the dimensional error of the work generally increases almost proportionally as the number i of the measured work increases, the continuity is not included in the correction value U of the fixed size point. In other words, it is desirable to make the surface smooth, that is, to smoothly change as the processing proceeds, in order to suppress the dimensional variation of the work.

Therefore, in this embodiment, focusing on the fact, as shown conceptually in a graph of FIG.
Ignoring the continuity correction value U is determined and the provisional value (hereinafter, referred to as "provisional correction value U". In addition, different from the provisional correction value U _P described above) is a, was acquired to the current It is assumed that the latest M (two or more fixed values) provisional correction values U are almost proportional to the increase in the number i of measured workpieces, and the primary regression similar to the above case is performed for the M provisional correction values U. The line formula is specified. Then, the true value of the current correction value U using equation is estimated, it is the final value of the correction value U (hereinafter, referred to as "final correction value U ^*". Note that the final correction value U _F described above Is different). This technology,
It has been filed as Japanese Patent Application No. 4-61306 of the present applicant.

Specifically, as an equation of the linear regression line, for example,

[0148]

(Equation 7)

The following equation is adopted. Here, x: value of the number i of the measured workpieces x ': average value of M x values y: true value of the temporary correction value U at each value of x U: calculation of the temporary correction value U at each value of x Value U ': Average value of calculated values of M provisional correction values U

Then, by substituting the value of the current measured work number i into “x” in the above equation, the current final correction value U ^* is obtained.

In this embodiment, whether or not to execute the continuity-consideration correction is instructed by the operator.

When the operator issues a continuity-consideration-type correction command (however, when the second differential value use command is not issued), the final correction value U ^* is obtained from the measured value X. FIG. 24 conceptually illustrates the process up to this point. In this figure, the value of the number i of measured workpieces increases from the left side to the right side. As is clear from the figure, when the accumulation of the measurement value X in the operation data memory is started from the non-accumulation state, (K
+ L + M−2) when one measurement value X is accumulated, one final correction value U ^* is obtained for the first time,
This is one aspect of the above-described “set multiple” regarding the accumulation of the measured values X.

(5) Consideration of dead zone As described above, regarding transmission of the final correction value U ^* relating to the main correction and the auxiliary correction, a dead zone in relation to the sizing device 14 is set, and the final correction value determined each time is set. When U ^* is within the dead zone, transmission of the final correction value U ^{* to} the sizing device 14 is omitted. This situation is conceptually shown in FIG.

(6) Others If the manual correction by the sizing device 14 is performed, the control device 20 gives priority to the manual correction over the automatic correction, and the accuracy of the automatic correction even immediately after the manual correction. Designed to be secured. Specifically, the control device 20
Continuously monitors whether or not the manual correction has been performed in the sizing device 14. If the manual correction is not performed, the automatic correction is performed. However, if the manual correction is performed, the automatic correction is interrupted, and the influence of the manual correction is reduced. After the time when the head correction target workpiece processed under the received fixed size point is measured by the total number measuring machine 16, the measured value X
It is also designed to restart the automatic correction by restarting the accumulation in the operation data memory from the non-accumulation state. The control device 20 is designed to use the past measurement value X to determine the automatic correction value, and furthermore, in the processing system in which the control device 20 is used, the processing machine 10 is used.
Since it is permissible that a standby work exists between the work and the total number measuring device 16, the measured value X of the work not affected by the manual correction is distinguished from the measured value X of the work affected by the manual correction. If the automatic correction value is determined based on the stored measurement value X, the accuracy of the automatic correction value may decrease due to the measurement value X of the work not affected by the manual correction. Because there is.

In this embodiment, the sizing device 14 is used.
The monitoring of the presence or absence of the manual correction is performed at the beginning of the control device 20 and before the control device 20 transmits the automatic correction value each time. The reason for monitoring the presence or absence of manual correction in the sizing device 14 even at the start of the control device 20 is that manual correction may be performed in the sizing device 14 while the control device 20 is stopped.

The contents of the fixed point correction performed by the control device 20 have been described briefly. The following is a specific description based on the flowcharts of FIGS. 5 to 10 showing the fixed point correction routine.

First, step S1 in FIG. 5 (hereinafter simply referred to as “S1”; the same applies to other steps)
, A numerical value or a command is input from the auxiliary storage device 22 as a parameter. Here, the “numerical value” means the value of the weighting coefficient b relating to the moving average value P, the replacement limit number Z, the auxiliary correction limit number S, and the like, and the “command” refers to the special This means a moving average value calculation command or the like.

Subsequently, in S2, it is determined whether or not the sizing device 14 has a function of transmitting the latest manual correction value and sizing point to the control device 20 (hereinafter, referred to as a "manual correction value transmission function"). Is determined. Here, the case where the manual correction value transmission function is provided means that the sizing device 14 outputs the manual correction value input to the sizing device 14 by the operator via the keyboard 50 and the sizing point reflecting the manual correction value. This means that the sizing device 14 is designed not only to store the data in the RAM but also to transmit the data to the control device 20 spontaneously. This refers to a case where the manual correction value and the fixed size point reflecting the manual correction value are only stored in the own RAM, and are not designed to be spontaneously transmitted to the control device 20.

Since the sizing device 14 has the manual correction value transmitting function as described above, the determination in S2 is made by YE
S (represented by “Y” in the figure. The same applies to other steps). Accordingly, the process proceeds to S3, where the control device 20 enters a reception permission state in which the control device 20 permits reception of a signal representing the latest sizing point from the sizing device 14, and the latest sizing point is received. The latest fixed point received is stored in the RAM of the control device 20 and is also stored in the auxiliary storage device 22.

Thereafter, in S4, the R of the sizing device 14
It is determined from the state of the AM flag whether or not manual correction has been performed. Assuming that there was no manual correction,
Then, the process immediately proceeds to S8, but if it is assumed that there is, the determination becomes YES, and in S5, the control device 20
Is in a reception permitting state in which reception of a signal representing the latest manual correction value from the sizing device 14 is permitted, and the latest manual correction value is received. The received latest manual correction value is stored in the RAM of the control device 20, and further stored in the auxiliary storage device 2.
2 is stored. Thereafter, in S6, the operation data memory is cleared. With the manual correction, all the data stored in the arithmetic data memory is deleted.
Then, the process proceeds to S8.

The case where the determination in S2 is YES has been described above. However, if it is assumed that the sizing device 14 does not have a manual correction value transmitting function, the determination is NO (represented by "N" in the figure). The same applies to the other steps.)
In S7, the control device 20 sets the sizing device 14
Is read from the RAM and stored in the RAM of the control device 20, and the latest fixed point is stored in the auxiliary storage device 22.

Here, the purpose of the control device 20 monitoring the latest manual correction value and the sizing point in the sizing device 14 will be described.

First, the purpose of the control device 20 monitoring the latest fixed point will be described. The control device 20 corrects the sizing point of the sizing device 14 (the amount by which the current sizing point is changed).
Is automatically determined, and the sizing device 14 corrects its own sizing point according to the determined correction value. But,
There is a limit to the range in which the sizing point can be taken, and when a sizing point exceeding that is determined, the operation of the sizing device 14 is stopped. Therefore, in the present embodiment, the sizing device 1
4 is sequentially monitored, and if the fixed point is corrected with an automatically determined correction value, the correction value exceeds the allowable range. The transmission to is prohibited. As described above, in order to prevent the sizing point of the sizing device 14 from exceeding the allowable range by the one-sided automatic correction that does not take the circumstances of the sizing device 14 into consideration, the control device 20 uses the latest sizing device 14 It monitors the fixed point. Note that the process of prohibiting the transmission of the automatic correction value when the sizing point exceeds the allowable range in the sizing device 14 is realized by executing another routine (not shown).

Next, the purpose of the control device 20 monitoring the latest manual correction value will be described. As described above, when the operator issues a data shift processing command to permit the use of the data shift processing, the control device 20 determines whether the processing machine 1
Measurement is performed on each of the workpieces that have been machined according to 0, but have not yet been measured by the 100% measuring machine 16, assuming that they have been machined under the fixed point affected by the latest correction value U. Predict the value. At this time, if the sizing point of the sizing device 14 has been automatically corrected by the control device 20, the above-described prediction is performed by adding the latest automatic correction value to the latest measurement value X by the total number measuring device 16. On the other hand, when the manual correction is performed by the sizing device 14 itself, the prediction is performed by adding the latest manual correction value to the latest measurement value X. Thus, in order for the control device 20 to predict the measured value X in consideration of the influence of the manual correction value in the sizing device 14, it is necessary to monitor the latest manual correction value in the sizing device 14. .

In both cases where the sizing device 14 has or does not have the manual correction value transmission function, then, in S8, the measurement value X measured by the 100 It is determined whether there is any that has not been transmitted to the control device 20 from. This time such a measured value X
Assuming that there is no, the determination is NO and the process moves to S9.

In S9, similarly to S2, it is determined whether or not the sizing device 14 has a manual correction value transmitting function. Since the sizing device 14 has the manual correction value transmission function, the determination is YES, and it is determined in S10 whether or not the sizing device 14 has been manually corrected in the same manner as in S4.

Assuming that there was no manual correction this time,
The determination is NO, and in S11, it is determined whether or not a keyboard (not shown) connected to the control device 20 has been operated by an operator, that is, whether or not a key has been input by the operator. If not, the determination is NO and the process immediately returns to S8. If yes, the determination is YES. In S12, data is input from the keyboard. In S13, the parameter is changed in accordance with the data. The changed parameters are stored in the auxiliary storage device 22, and thereafter, in S14, the operation data memory is cleared, and thereafter, the process returns to S8.

On the other hand, if it is assumed that the manual correction has been performed this time, the determination in S10 becomes YES, and in S15, the latest manual correction value is received from the sizing device 14 and stored in the same manner as in S5. Then, in S16, a work waiting flag described later is turned on, and in S17, the operation data memory is cleared. Then, the process returns to S8.

On the other hand, assuming that the sizing device 14 does not have the manual correction value transmitting function, the determination in S9 is N.
In step S18, the latest sizing point is read from the sizing device 14 and stored in the RAM and stored in the auxiliary storage device 22. Thereafter, in S19, the last sizing point is read from the auxiliary storage device 22 from the auxiliary storage device 22. Dimensions are entered. Thereafter, in S20, it is determined whether or not the current sizing point has been changed from the previous sizing point. That is, whether or not manual correction has been performed in the sizing device without the manual correction value transmission function is determined from the change state of the sizing point. Assuming there is no change in the fixed point this time,
The determination is NO and the process immediately proceeds to S11. However, assuming that the fixed size point has been changed, the determination in S20 is YES, and in S21, the work waiting flag is turned on, and
In S22, the operation data memory is cleared, and then the process proceeds to S11.

The case where there is no measured value X to be transmitted by the all-in-one measuring device 16 has been described above. If there is, the determination in S8 is YES, and the measured value X is transmitted from the all-in-one measuring device 16 in S23. Is entered. Measured value X
Are individually entered for all seven journal surfaces. The measured value X is stored in the arithmetic data memory and stored in the auxiliary storage device 22.
Move to 4.

At S24, it is determined whether or not a data shift processing command has been issued by the operator based on the value of the parameter. Hereinafter, first, the case where the data shift processing command is not issued will be described.

In this case, the determination in S24 is NO, and
At 25, it is determined whether or not the work waiting flag is ON.

The work waiting flag is the leading one of at least one work machined under the sizing point in the sizing device 14 which has been affected by the latest manual correction value or automatic correction value. This is for monitoring whether the work to be corrected at the top is measured by the 100% measuring machine 16 or is waiting for the measurement. This work waiting flag is OFF to indicate that the head correction target work has completed measurement, that is, not in the work waiting state, while ON indicates that the head correction target work does not end measurement, that is, in the work waiting state. Indicates that there is. This work waiting flag is provided in the RAM,
It is turned on when the power of the computer is turned on, and is turned off each time the work to be corrected at the top is completed by the 100-measuring machine 16 by executing another program (not shown).
F. In addition, this routine is turned on each time manual correction is performed and each time intermittent correction is completed. Assuming that the work waiting flag is not ON this time, the determination in S25 is NO, and the determination in S26 is NO.
Move to

At S26, the past measured value X is input from the operation data memory. Thereafter, in S27, it is determined whether the current moving average value P can be calculated.
It is determined whether or not the number of measured values X stored in the operation data memory is K or more. This time, if it is assumed that the number of accumulated measurement values X is not more than K, the determination is NO, and in S28, the presence or absence of a special moving average value calculation command is determined. If not, the determination is NO, and the process immediately returns to S8. Therefore, in this execution of this routine, the automatic correction value, that is, the final correction value U ^* is eventually set to zero.

On the other hand, if there is a special moving average value calculation command, the determination in S28 becomes YES, and in S29, the presence or absence of the variable moving average value calculation command is determined. Otherwise, the determination is no and the process moves to S30. Note that the variable moving average value calculation command and the replacement moving average value calculation command are alternative commands.Therefore, if there is no variable moving average value calculation command, the replacement moving average value calculation command always exists. Become.

In S30, it is determined whether or not the displacement type moving average value can be calculated. Specifically, is the number of measured values X stored in the operation data memory smaller than K (the number of measured values X necessary to calculate the moving average value P in principle) -Z (replacement limit number)? Is determined, and if so,
It is determined that the permutation-type moving average value calculation is impossible (accurately, prohibited), otherwise, it is determined possible (accurately, permitted). If it is not possible, the process returns to S8. However, if the execution of this routine (the execution of the steps after S8) becomes possible a number of times, the determination becomes YES, and in S31, the current measured value X remains unchanged. The current moving average value P is set, and in S32, the moving average value P is stored in the calculation data memory.
It is stored in the auxiliary storage device 22. Then, the process proceeds to S37.

On the other hand, if there is a variable moving average value calculation command, the determination in S29 is YES, and in S33, the moving average value P is calculated by the variable moving average value calculation method.
Is calculated, and in S34, it is stored in the arithmetic data memory and stored in the auxiliary storage device 22. Then, the process proceeds to S37.

Thereafter, if it is assumed that the number of measured values X stored in the arithmetic data memory becomes K or more while the execution of this routine is repeated many times, the determination in S27 becomes YES and S35. In step S36, the moving average value P is calculated in principle. In step S36, the moving average value P is stored in the arithmetic data memory and stored in the auxiliary storage device 22. Then, the process proceeds to S37.

In this step S37, it is determined whether or not there is a diameter correction command for both ends. If not, the determination is NO, and the process immediately proceeds to S39 in FIG. 7. If there is, the determination is YES. The diameter correction at both ends is performed on the moving average value P of the end cylindrical surface, and the content of the operation data memory is changed according to the result. Thereafter, the flow shifts to S39 in FIG.

[0180] In this S39, from the time of moving average P, is a value obtained by subtracting the target value A ₀ of the dimensions of the workpiece between the current error value R, subsequently, in S40, it is accumulated in the operation data memory And the auxiliary storage device 22
Is stored in

Thereafter, in S41, it is determined whether the differential value T can be calculated. It is determined whether the number of moving average values P stored in the operation data memory is L or more. In this case, if it is assumed that the number of the moving average values P is insufficient, the determination is NO, and the process shifts to S42.
In step S42, the presence or absence of the variable differential value calculation command is determined. If not, the determination is NO, and the process immediately returns to step S8 to end the current execution of this routine. In the above, it is determined whether or not the moving average value P stored in the operation data memory is two or more, that is, whether or not the variable differential value calculation is possible. And immediately returns to S8, but if possible, the determination is YES and S
At 44, the current differential value T is calculated by the variable differential value calculation method, and at S45, it is stored in the operation data memory and stored in the auxiliary storage device 22. Then, the process proceeds to S48.

Thereafter, if it is assumed that the number of moving average values P stored in the arithmetic data memory becomes L or more while the execution of this routine is repeated many times, S41
Is YES, the differential value T is calculated in principle in S46, and it is stored in the arithmetic data memory and stored in the auxiliary storage device 22 in S47. Then, the process proceeds to S48.

In this step S48, it is determined whether or not there is a twice differential value use command.
At 9, it is determined whether the differential value D can be calculated twice.
It is determined whether or not the number of differential values T stored in the operation data memory is Q or more. In this case, if it is assumed that the number of accumulated differential values T is not equal to or more than Q, the determination is NO, the process immediately returns to S8, and the current execution of this routine ends. If it is assumed that the number of differential values T stored in the arithmetic data memory becomes Q or more during execution of this routine many times, S4
The determination at 9 is YES, the differential value D is calculated twice in S50 as described above, and the differential value D is stored in the arithmetic data memory and stored in the auxiliary storage device 22 in S51. Then, the process proceeds to S55.

On the other hand, if there is no twice differential value use command, the determination in S48 is NO, and in S52, the presence or absence of a dead time consideration type correction command is determined. If not, the determination is NO, and the process immediately proceeds to S55. However, if there is, the determination is YES. In S53, the dead time MS is input from the work number counter 18, and in S54, it is stored in the arithmetic data memory. Are stored in the auxiliary storage device 22. Then, the process proceeds to S55.

In S55, provisional correction value U is calculated by fuzzy calculation. There are three types of fuzzy rules for this fuzzy operation. That is, a fuzzy rule for calculating the provisional correction value U based on the error value R and the differential value T without using the twice differential value D and without considering the dead time MS, Without using D, the error value R, differential value T and dead time MS
And a fuzzy rule for calculating the provisional correction value U on the basis of the error correction value R, the differential value T, and the second differential value D without considering the dead time MS.
There is a fuzzy rule for calculating. In this step, a fuzzy rule is selected in accordance with a command from the worker, and a fuzzy operation is performed using the selected rule, and among the error value R, the differential value T, the second differential value D, and the dead time MS, The provisional correction value U is calculated based on what is necessary. Then, in S56,
It is stored in the arithmetic data memory and stored in the auxiliary storage device 22. Thereafter, the flow shifts to S57 in FIG.

In this step S57, it is determined whether or not there is a continuity-consideration type correction command.
At 58, the provisional provisional value U remains unchanged as the final correction value U ^*.
In S59, it is stored in the auxiliary storage device 22. On the other hand, if there is a continuity-consideration-type correction command, the determination in S57 is YES, and in S60, it is determined whether or not continuity-consideration-type correction is possible. It is determined whether the number of provisional correction values U stored in the operation data memory is M or more. In this case, if it is assumed that the number of the accumulated provisional correction values U is not M or more, the determination is NO, the process immediately returns to S8, and the current execution of this routine ends. Thereafter, if it is assumed that the number of provisional correction values U stored in the arithmetic data memory becomes M or more while the execution of this routine is repeated many times, S
The determination at 60 is YES, and at S61, the final correction value U ^* is calculated as described above, based on the latest M provisional correction values U stored in the operation data memory. Then, in S62, it is stored in the operation data memory and stored in the auxiliary storage device 22.

When the execution of S59 or 62 is completed, it is determined in S63 of FIG. 9 whether or not there is an auxiliary correction command. If it is assumed that there is no current time, the determination is NO, and S64
In, it is determined whether or not the current final correction value U ^* should be transmitted to the sizing device 14, that is, whether or not the final correction value U ^* is outside the dead zone. If it is assumed that the current time is within the dead zone, the determination is NO, and the fuzzy rules that have been matched in the fuzzy calculation are stored in the auxiliary storage device 22 in S65. Then immediately S8
And the current execution of this routine ends.

On the other hand, if it is assumed that the final correction value U ^* is out of the dead zone, the determination in S64 becomes YES, and in S66, it is determined whether or not the sizing device 14 has a manual correction value transmission function. Is determined. Therefore, the determination is YES, and the presence or absence of manual correction in the sizing device 14 is determined in S67.
In S68, the final correction value U ^* is set to the sizing device 1
4 is stored in the auxiliary storage device 22.
Thereafter, in S69, it is determined whether or not there is an auxiliary correction command. Since it is assumed that there is no fuzzy rule this time, the determination is NO, and the matched fuzzy rules are stored in the auxiliary storage device 22 in S70, as in S65.

On the other hand, if it is assumed that manual correction has been performed in the sizing device 14, the determination in S67 becomes YES, and the latest manual correction value and sizing point are received from the sizing device 14 in S71. The work wait flag is turned on in S72, the arithmetic data memory is cleared in S73, and the process returns to S8.

Assuming that the sizing device 14 does not have a manual correction value transmitting function, the determination in S66 is NO, and the latest sizing point is read from the sizing device 14 in S74. It is stored in the RAM and stored in the auxiliary storage device 22, and in S75, the previous fixed point is read from the RAM. Thereafter, in S76, it is determined from the previous sizing point and the latest sizing point whether or not the sizing point has been changed. It is determined whether or not the correction has been made. If no change has been made, the determination is NO, and the process proceeds to S68. If there is, the determination is YES.
At 78, the operation data memory is cleared, and the process returns to S8.

On the other hand, assuming that there is an auxiliary correction command, the determination in S63 becomes YES, and in S79, it is determined whether or not the auxiliary correction is being executed. It is determined whether the value of the auxiliary correction counter indicating the number of times of performing the auxiliary correction is 1 or more. Assuming that it is 0 this time, the determination is NO, and the process proceeds to the step group from S64 onward, and the main correction is performed. In step S69 of this group of steps, it is determined whether or not there is an auxiliary correction command, and it is assumed that there is an auxiliary correction command.
It becomes ES, and the value of the auxiliary correction counter is incremented by 1 in S80.

On the other hand, if it is assumed that the auxiliary correction is currently being performed and the value of the auxiliary correction counter is not 0, the determination in S79 becomes YES, and the flow proceeds to the step group after S81 to perform the auxiliary correction. Is performed. In S81, the current final correction value U ^* (the current provisional correction value _UP
It is the previous last corrected value U ^* (the equivalent to the previous provisional correction value U _P) is a value obtained by subtracting the corresponding to the current transmission value (the current final correction value U _F) from the corresponding) to, S8
In 2, it is determined whether or not the sizing device 14 has a manual correction value transmission function. Judgment is Y
ES, and in S83, the presence or absence of manual correction in the sizing device 14 is determined.
If the determination is NO, the transmission value is transmitted to the sizing device 14 in S84. Auxiliary correction is performed.
Thereafter, in S85, the transmission value is stored in the auxiliary storage device 2.
In step S86, the auxiliary correction counter is incremented. Thereafter, the flow shifts to step S80. On the other hand, if it is assumed that manual correction has been performed, the determination in S83 is Y
It becomes ES, the manual correction value is received from the sizing device 14 in S87, the work waiting flag is turned on in S88, the calculation data memory is cleared in S89, and thereafter, the process returns to S8.

On the other hand, if it is assumed that the sizing device 14 does not have the manual correction value transmitting function, the determination in S82 is NO, and the flow proceeds to the steps from S74 onward to execute the automatic correction. The permission / rejection is determined, and if the permission is granted, the automatic correction value is transmitted to the sizing device 14. Also,
In this case, the determination in S69 becomes YES, and in S80, the auxiliary correction counter is incremented.

When the execution of S70 is completed, S9 in FIG.
At 0, the presence or absence of an auxiliary correction command is determined. Assuming that there is no current time, the determination is NO, the work wait flag is turned on in S91, the arithmetic data memory is cleared in S92, and then the presence or absence of a data shift processing command is determined in S93. Since it is assumed that there is no current time, the determination is NO and the process immediately returns to S8.

On the other hand, if it is assumed that there is an auxiliary correction command this time, the determination in S90 becomes YES, and in S94, it is determined whether or not the current auxiliary correction should be terminated. Specifically, it is determined whether the current value of the auxiliary correction counter has become equal to or greater than a set value (input from the auxiliary storage device 22 in S1 of FIG. 5). Assuming that this is not the case this time, the determination is NO and the process immediately returns to S8.

Thereafter, if it is assumed that the current value of the auxiliary correction counter has become equal to or greater than the set value while the execution of this routine is repeated many times, the determination in S94 becomes YES, and
In S95, a sum (hereinafter, referred to as a “total correction value”) of all correction values transmitted to the sizing device 14 in at least the current auxiliary correction of the current auxiliary correction and the preceding main correction is calculated. Thereafter, in S96, it is determined whether or not the total correction value is 0, that is, whether or not it is necessary to continue the current auxiliary correction since it is estimated that at least the current auxiliary correction has not been performed at a really necessary time. Is determined. Assuming that it is not necessary this time, the determination is NO, the work wait flag is turned on in S97, the arithmetic data memory is cleared in S98, and the presence or absence of a data shift processing command is determined in S99. Since it is assumed that there is no current time, the determination is NO and the process immediately returns to S8.

On the other hand, if it is assumed that the current auxiliary correction needs to be continued, the determination in S96 becomes YES, and in S100, the presence or absence of an auxiliary correction restart command is determined. If it is assumed that there is an auxiliary correction extension command instead of the auxiliary correction restart command this time, the determination is NO, and S10
At 1, the value of the auxiliary correction counter is set to 1, and thereafter, the process returns to S8. Therefore, at the next execution of this routine, since the current value of the auxiliary correction counter is not 0,
The determination in S79 in FIG. 9 is NO, and the process proceeds to S64.

On the other hand, if it is assumed that there is not the auxiliary correction extension command but the auxiliary correction restart command this time, the determination in S100 of FIG. 10 becomes YES, and the value of the auxiliary correction counter is set to 0 in S102. Then, the process returns to S8.
Accordingly, at the next execution of this routine, the current value of the auxiliary correction counter is 0, so the determination in S79 in FIG. 9 is YES, and the process proceeds to S81.

When S25 in FIG. 6 is executed while the work waiting flag is ON, the determination is made as YE.
In S103, the operation data memory is cleared in S103, and thereafter, the process returns to S8. In other words, immediately after the manual or automatic correction of the fixed point, the S in FIG.
Despite the existence of 23, the measurement data X and the like are not actually stored in the calculation data memory, and the work machined under the fixed point affected by the latest manual correction or automatic correction is initially performed. The work wait flag is turned off when the total number is measured by the total number measuring device 16, and the determination in S25 in FIG.
It becomes O, and the accumulation of the measured value X and the like in the operation data memory is restarted.

The case where the data shift processing instruction has not been issued has been described above. Next, the case where the data shift processing instruction has been issued will be described.

In this case, the determination at S24 in FIG.
S is reached, and the process proceeds to the step group from S104. S1
In 04, it is determined whether the data shift process should be prohibited. For the head correction target work related to the latest manual correction value or automatic correction value,
Is completed, the data shift processing is no longer required, and the error of the measured value X increases instead. Therefore, in such a case, the data shift processing is prohibited.

The determination as to whether or not the measurement of the work to be corrected first has been completed is, specifically, the target number of times of data shift processing stored in the RAM (the storage of which will be described later), The number of workpieces that existed between the processing machine 10 and the total number measuring device 16 when the manual correction value or the automatic correction value was transmitted to the sizing device 14 was calculated every time the measurement by the total number measuring device 16 was completed. When the result of the subtraction is 1 and the result is 0, it is determined that the measurement of the work to be corrected first has been completed.

If it is assumed that the measurement of the work to be corrected at the beginning has not been completed this time, the determination is NO, and S10
In 5, the latest manual correction value or automatic correction value is determined as the current shift amount. Thereafter, in S106, the current measurement value X is changed by adding the current shift value to the current measurement value X. Are stored in the arithmetic data memory and stored in the auxiliary storage device 22. After that, in S107, the past measurement value X is input from the operation data memory, and preparations are made for calculation of the moving average value P in S27 and subsequent steps.

Thereafter, if it is determined in S93 of FIG. 10 that a data shift processing command is present, it is assumed that the data shift processing command is present, so the determination is YES, and in S108, the dead time MS from the work number counter 18 is determined. The data is input, stored in the RAM as the target number of times for the next data shift processing, and further stored in the auxiliary storage device 22. Then, the process returns to S8.

In the same manner as in the above case, the determination in S99 is YES, and in S109, the dead time MS is input from the work counter 18 and stored in the RAM as the target number of times for the next data shift processing. The data is further stored in the auxiliary storage device 22. Then, the process returns to S8.

As described above, the target number of data shift processes is performed at the end of intermittent correction.
Although not shown, the correction is also performed at the end of the manual correction, and its standard value is stored in the ROM in advance in preparation for the first execution of this routine.

Thereafter, assuming that the measurement by the 100% measuring machine 16 is completed for the head correction target work relating to the latest manual correction value or automatic correction value while the execution of this routine is repeated many times, FIG. The determination in S104 is Y
It becomes ES, and in S110, the current shift amount is set to 0, and thereafter, the process proceeds to S106. That is, this time, the actual measured value X is stored in the arithmetic data memory as it is.

As described above, when the data shift process is permitted, the measured value X is stored in the calculation data memory irrespective of the ON / OFF state of the work waiting flag. Time is shortened.

As is clear from the above description, in this embodiment, the processing machine 10 constitutes one embodiment of the "processing machine 1" in each of the first to seventh aspects of the present invention, and the sizing device 14 and the motor controller 15 constitutes one embodiment of the “processing machine control means 2”, the total number measuring machine 16 constitutes one embodiment of the “measuring machine 3”, and FIG.
Of steps other than S64, 68 and 84 constitute one embodiment of the "correction value determining means 4".
The part that executes 64, 68 and 84 constitutes one mode of the "correction value transmitting means 5".

As described above, one embodiment of the present invention has been described in detail with reference to the drawings. However, the present invention can be implemented in other embodiments.

For example, in the above-described embodiment, even when the number of measured values X stored in the operation data memory does not reach the set number, the moving average value P, the error value R, the differential value T, etc. are sequentially determined. Calculated and stored in the operation data memory,
One final correction value U ^* is determined when the number of accumulated measurement values X reaches a set number. However, when the number of accumulated measurement values X does not reach the set number, the moving average value P or the like is not calculated at all, and when the number of accumulated measurement values X reaches the set number, For the first time, the present invention can be implemented such that the moving average values P and the like are collectively calculated to determine one final correction value U ^* .

In the above embodiment, a crankshaft is used as a workpiece, and a plurality of journal surfaces (outer peripheral cylindrical surface) thereof are used.
Is an example of the case where the present invention is applied to a fixed point correction device used together with a processing system that performs cylindrical grinding as a processing part, but the present invention is applied to a fixed point correction device used together with another processing system. It can, of course, be applied. Other processing systems include, for example, a work to be processed on a cylinder block of an automobile engine,
In addition, a machining system that hones a plurality of cylinder bores (inner peripheral cylindrical surfaces) formed in advance as machining portions can be selected.

The above embodiment is an example of the case where the present invention is applied to a machining system for machining a work in which a plurality of machining portions are set, but a machining in which only one machining portion is set. Of course, it can be applied to the system.

In the above embodiment, the present invention is applied to a machining system for machining a work in which a plurality of machining portions are set, and all of the machining portions are not provided with an in-process measuring machine. However, the present invention can be applied to a processing system having an in-process measuring machine for all of the processing parts.

The present invention can be carried out in various modified and improved forms based on the knowledge of those skilled in the art without departing from the scope of the claims.

[Brief description of the drawings]

FIG. 1 is a diagram conceptually showing a configuration of each of the first to seventh aspects of the present invention.

FIG. 2 is a perspective view showing a state in which a crankshaft is ground by a grindstone in a processing system used together with a feedback type fixed point correction apparatus which is an embodiment common to the first to seventh aspects of the present invention.

FIG. 3 is a system diagram showing the entire processing system.

FIG. 4 is a diagram showing a configuration of a processing machine in the processing system.

FIG. 5 is a flowchart illustrating a part of a fixed point correction routine executed by the computer of the control device 20 in FIG. 4;

FIG. 6 is a flowchart showing another part of the fixed point correction routine.

FIG. 7 is a flowchart showing yet another part of the fixed point correction routine.

FIG. 8 is a flowchart showing yet another part of the fixed point correction routine.

FIG. 9 is a flowchart showing yet another part of the fixed point correction routine.

FIG. 10 is a flowchart showing yet another part of the fixed point correction routine.

FIG. 11 is a diagram conceptually showing the flow of the entire process of the fixed point correction routine.

FIG. 12 is a graph conceptually showing the details of the removal of inter-adjacent variation in FIG. 11;

FIG. 13 is a diagram for explaining an example of the inter-adjacent variation removal.

FIG. 14 is a diagram for explaining an example in which an example of the removal of inter-adjacent variation in FIG. 13 is improved.

FIG. 15 is a diagram for explaining an example in which the improved example of the removal of inter-adjacent variation in FIG. 14 is further improved.

FIG. 16 is a graph conceptually showing the contents of the correction of both end diameters in FIG. 11;

FIG. 17 is a graph conceptually showing a method of calculating a differential value T from an error value R in obtaining dimension information in FIG.

FIG. 18 is a graph conceptually showing intermittent correction, which is one method of fixed point correction.

FIG. 19 is a graph conceptually showing a first method of the intermittent correction.

FIG. 20 is a graph conceptually showing an embodiment of the first method.

FIG. 21 is a graph conceptually showing a second method of intermittent correction in FIG.

FIG. 22 is a graph conceptually showing one embodiment of the second method.

FIG. 23 is a graph conceptually showing the content of continuity consideration in FIG. 11;

24 is a diagram for explaining an example of a process in which a final correction value U ^* is derived from a measured value X in the fixed point correction routine of FIGS.

FIG. 25 is a graph conceptually showing the contents of dead zone consideration in FIG. 11;

FIG. 26 is a graph for explaining the effects of the inventions of claims 5 to 7 ;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Processing machine 12 In-process measuring machine 14 Sizing device 15 Motor controller 16 100% measuring machine 20 Control device 44 Post-process measuring machine 50 Keyboard

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-228354 (JP, A) JP-A-62-57853 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23Q 15/00-15/28 G05B 19/18-19/46

Claims (7)

(57) [Claims] (A) a processing machine for processing each of a plurality of workpieces sequentially; and (b) processing conditions of the processing machine are determined based on a correction value supplied from outside, and the processing conditions are determined according to the determined processing conditions. Processing machine control means for controlling the processing machine, and (c) including a measuring machine for sequentially measuring the dimensions of each of the plurality of workpieces processed by the processing machine, between the processing machine and the measuring machine processing system that allows the workpiece to wait for measurement by the measuring device is present, a their machine control means and measuring and connected to the feedback-type processing condition correction device to be used, by the measuring device Sequential storage of multiple measurement values acquired in order
The number of measurement values accumulated and accumulated has exceeded the set number.
Sometimes, those accumulated latest setting
Of the workpiece to be processed next by the processing machine
Determine the correction value of the processing condition, and determine the correction value
Thereafter, the accumulation of the measurement values is restarted from the non-accumulation state.
A feedback-type processing condition correction apparatus, comprising: a positive value determination unit; and a correction value supply unit that supplies a correction value determined by the correction value determination unit to the processing machine control unit. 2. Processing each of a plurality of works in order.
The processing machine and (b)
Determine the processing conditions for the processing machine, and
Therefore, processing machine control means for controlling the processing machine, and (c)
The dimensions of each of multiple workpieces processed by the
And a processing machine for measuring
Work waiting for measurement by the measuring machine
The processing machines of the processing system that allow to exist
Fees to be used connected to the control means and the measuring instrument
A Dobakku type processing condition correction device, the measuring sequentially accumulating a plurality of measurements taken by Ri in sequence, when the number of accumulated measured value is equal to set multiple or are they accumulate The latest setting of the work to be processed next by the processing machine
A correction value of the processing condition is determined, and a head correction target work to be measured by the measuring device first among at least one work processed according to the processing condition affected by the current correction value. Restarts the accumulation of the measured value from the non-accumulated state after the time when the measurement is completed.
Correction value determining means, and processing the correction value determined by the correction value determining means.
And correction value supply means for supplying the correction value supply means to the machine control means.
Feedback type processing condition correction device according to symptoms. 3. Processing each of a plurality of workpieces in order.
The processing machine and (b)
Determine the processing conditions for the processing machine, and
Therefore, processing machine control means for controlling the processing machine, and (c)
The dimensions of each of multiple workpieces processed by the
And a processing machine for measuring
Work waiting for measurement by the measuring machine
The processing machines of the processing system that allow to exist
Fees to be used connected to the control means and the measuring instrument
A back-type processing condition correction device,  According to the measuring machineMultipleMeasured values sequentially
Accumulated and the number of accumulated measurement values exceeds the set number
When the latest settings are stored for multiple measured values
On the basis of theWork to be processed next by the processing machine
The correction value of the processing condition ofDecision
AndAnd the provisional correction valueMain correction with the final correction value
When, Continue to accumulate the measured values even after the main correction is completed
I,After the end of the main correction,SaidFinal correction value
Less processed according to the processing conditions affected by
Are measured by the measuring machine first in one work.
Is added only once before the workpiece to be corrected.
Measurement of the machined work is completed by the measuring machine.
Work is measured by the measuring machine until before
Each time, based on the accumulated latest measured values
Provisional for each round according to the same rules as in the main amendment above.
Determine the correction value and apply the
Subtract the provisional correction value of each time and determine the final correction value of each time
And make auxiliary corrections.,Final correction of the main correction
Work to be corrected at the beginning related to the valueofMeasurement by the measuring machineBut
After the end of the period, the measurement value
Resume fromCorrection value determining means; Main correction and auxiliary determined by the correction value determining means
The final correction value of the correction is sequentially sent to the processing machine control means.
SupplyCorrection value supply means, Characterized by containing
Feedback type processing condition correction device. Wherein said correction value determining means, when the number of determinations of the final correction value in a series of auxiliary compensation measures, determined number of times the measured has reached the set value,
If the sum of the main correction and a plurality of final correction value determined at least the series of auxiliary compensation of the series of auxiliary compensation is not substantially zero, and ends the series of auxiliary compensation, if substantially 0 4. The feedback-type processing condition correction apparatus according to claim 3 , wherein the series of auxiliary corrections is continued, and the measurement of the number of determinations is restarted from 0. 5. A method of processing each of a plurality of workpieces sequentially.
The processing machine and (b)
Determine the processing conditions for the processing machine, and
Therefore, processing machine control means for controlling the processing machine, and (c)
The dimensions of each of multiple workpieces processed by the
And a processing machine for measuring
Work waiting for measurement by the measuring machine
The processing machines of the processing system that allow to exist
Fees to be used connected to the control means and the measuring instrument
A debugging type processing condition correction device, which sequentially accumulates a plurality of measured values sequentially acquired by the measuring device, and when the number of accumulated measured values is equal to or more than a set number, the latest accumulated value is stored. Of the work to be processed next by the processing machine based on the plurality of measured values
Determine the correction value of the processing conditions, after the time of determining the current correction value, restart the accumulation of measured values from the non-accumulation state,
From the restart time, at least one work ahead of the head correction target work to be measured by the measuring machine first among at least one work processed according to the processing condition affected by the current correction value. Until the time when the measurement of the workpiece processed in the above is completed, each time the workpiece is measured by the measuring machine, each workpiece is determined based on the actual measurement value of each time and the correction value of the current time. Assuming that the machining has been performed in accordance with the machining conditions affected by the current correction value, a value to be measured for each of the workpieces is predicted, and the predicted measurement value is regarded as an actual measurement value and a correction value determination to be accumulated. Patent in that it comprises means, and a correction value supplying means for supplying to the machine control means a correction value determined by the correction value determining means
Feedback type processing condition correction device according to symptoms. Wherein said correction value determining means, said measuring sequentially accumulated measurements by, when the number of accumulated measured value is equal to set a plurality or more, they accumulated latest settings plurality The main correction that determines the current provisional correction value based on the measured value of the current correction value, and uses the provisional correction value as the final correction value, and continues to accumulate the measured values even after the main correction ends. After the end of the processing, at least one of the processing performed according to the processing conditions affected by the final correction value of the main correction
Until the time when the measurement by the measuring machine is completed for the work processed one time earlier than the head correction target work to be measured by the measuring machine first among the pieces of the work, the work is measured by the measuring machine. Each time a measurement is made, the provisional correction value of each time is determined according to the same rule as in the main correction, based on the accumulated latest plurality of measurement values, and the determined provisional correction value of each time is used to determine the previous correction value. Subtracting the provisional correction value and performing an auxiliary correction to determine the final correction value for each round, and further, after the auxiliary correction is completed, the accumulation of the measured values is restarted from the non-accumulation state. Until the time when the measurement by the measuring machine is completed for the work processed once before the work to be corrected based on the final correction value of the main correction, the work is measured by the measuring machine. For each measurement, based on the actual measurement value of each time and the latest final correction value, it is assumed that each of the workpieces has been processed according to the processing conditions affected by the latest final correction value. The measured value is predicted for each workpiece, and the predicted measured value is regarded as an actual measured value and stored. The correction value supply unit includes a main correction unit and an auxiliary unit determined by the correction value determination unit. 6. A feedback-type processing condition correction apparatus according to claim 5 , wherein final correction values for correction are sequentially supplied to said processing machine control means. 7. The correction value determining means measures the number of final correction value determinations in a series of the auxiliary corrections, and when the measured number of determinations reaches a set value,
If the sum of the main correction and a plurality of final correction value determined at least the series of auxiliary compensation of the series of auxiliary compensation is not substantially zero, and ends the series of auxiliary compensation, if substantially 0 7. The feedback-type machining condition correction apparatus according to claim 6 , wherein the series of auxiliary corrections is continued and the measurement of the number of determinations is restarted from 0.