JPH0649259B2 - Automatic production equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to an automatic production apparatus, and can be used, for example, to improve setup work and machining accuracy in a machining center.

[Background Art and its Problems] As a typical example of an automatic production apparatus, there is known a so-called machining center which has a tool changing function and cuts a work using a rotary tool.

The conventional machining center is premised on a so-called setup work, in which a tool of a certain diameter and its trajectory program are determined for each machining location of the workpiece after repeated trial cutting with respect to the target finish dimension of the workpiece While the tools corresponding to each machining location are stored in the tool magazine, each trajectory program is sequentially arranged according to the machining procedure to create a machining program, and when one machining location is completed in operation, the next machining program After switching to the tool and trajectory program suitable for the machining location, proceeding to the next machining location, and repeating these in sequence, the series of procedures is repeated for the next work as well to achieve automatic production.

Generally, if the working process in machining is divided, it can be divided into a setup process and a cutting process. A machining center can be seen as an improvement in its cutting process. That is, as described above, when a certain machining target is specified, the tool and the locus corresponding thereto are automatically determined. It can be regarded as a mere changeover of the cutting process, and therefore, the setup process is essentially the same as that of the manual machine.

For example, when performing a certain hole machining, trial cutting is performed using one tool that seems to correspond to the machining target value, the machined hole size is inspected, and the tool is adjusted based on the inspection result. Then, the test cutting is performed again, and then the inspection is performed again, and these are sequentially repeated to determine the tool having the specific diameter. At this time, depending on the case, it is necessary to prepare a plurality of the same tools in consideration of wear and damage of the tools. Further, in the case of outer cutting, in addition to the tool determining work, it is necessary to create a trajectory program for relatively moving the tool and the work. Then, after such setup work, each tool is housed in a tool magazine or the like at each processing location, and when the dimensions of the work cut by the cutting work on the work become out of tolerance, They had to replace each tool or tool magazine.

However, the following problems are inherent in the setup work in such a conventional machining center.
That is, an excessive amount of time is spent on the tool determination work during the setup work. This is because, in most cases, the adjustment based on the inspection result after the trial cutting is returned to the specialized manufacturer. In addition, from the viewpoint of eliminating the need for polishing or the like, a device provided with an adjusting means has been proposed,
It is rarely used because of accuracy and economic problems.

The tool deciding work during the above-mentioned setup work is largely due to experience, which leads to a shortage of skilled workers, and variations in people occur, which is not preferable in terms of accuracy.

A large amount of money and time were required to prepare the same tool.

During the setup work, the machining center must be kept in that state until the adjusted tool arrives, which also hinders the substantial operation of the cutting process. This is because, if the tool is operated before the arrival of the adjusting tool, the conditions for the mechanical structure are different, so that the adjusting of the tool may be meaningless.

Due to such a problem, the conventional machining center has a great effect of labor saving and unmanning in the cutting process, but it requires a great deal of technical, timely and economical preparation for the setup. .

On the other hand, from the viewpoint of processing accuracy, there are many technical problems to be solved in today's demand for higher accuracy processing. One of the reasons is that the work to be processed later has a larger deviation from the target value although it is within the tolerance. This is because the conventional machining center is formed to be replaced with a new tool when the number of pieces to be machined and the wear of the tool have reached a predetermined value by experience, or when the tool is damaged.

In order to solve this, the idea is to replace the tool with a new one while the number of products to be produced is relatively small, but as is clear from the setup work, it takes a long time to adjust from the pre-construction with the same tool. However, it is economically burdensome and not practical.

Further, the idea that the workpieces should be inspected and the tool locus thereof should be changed when a certain quantity is produced. However, this method requires a great deal of time and labor because the trajectory program must be reworked each time, and is not feasible. Even if this is possible, there is no guarantee that the error will be eliminated even if the vehicle is driven by the modified trajectory program. This is because the machining accuracy is determined as the total of mechanical and electrical factors. Therefore, changing the command value of only the trajectory on the program (for example, the feed amount and direction of the tool or workpiece) is different from the previous machining. This is because there is an inherent problem that they are not always processed with the same characteristics. Therefore, it can be said that it is not practical.

[Object of the Invention] Here, an object of the present invention is to improve the setup work while achieving high precision machining with less flicker without lowering productivity and workability as in the past. It is to provide an automatic production device.

[Means and Actions for Solving Problems] Therefore, according to the present invention, the above problems of the conventional machining center specify one tool for one machining surface, and the tool is manually adjusted exclusively by skill. In consideration of the fact that multiple single tools of the same type with slightly different diameters are prepared in advance for one machining point, the measured value and target value of the workpiece machined by the machine body (within the tolerance) Then, the machining error (machining error including all the factors of the machining center) is determined by comparing it with the ideal value), and the single tool with the optimum diameter that eliminates this machining error is automatically selected from the multiple single tools. Then, the next work is processed to improve the processing accuracy in the next work.

Specifically, a processing machine main body that cuts a work with a rotary tool, a tool magazine that stores a specific tool corresponding to each processing location of the work, and one specific tool extracted from the tool magazine In an automatic production device equipped with a tool changing device that is attached to and detached from a tool and a control device that incorporates a processing program for operating the processing machine main body and the like in a predetermined procedure, the diameters of the specific tools differ from each other by a minute dimension. While forming as a set of a plurality of single tools of the same type, each set is housed in the tool magazine, the measuring machine body for measuring the dimensions of the workpiece processed by the processing machine body, and this measuring machine body Comparison means for obtaining a processing error by comparing the measured value measured with a preset processing target value, and the processing error based on the processing error obtained by this comparing means A diameter designating means for determining the diameter of a single tool suitable for reduction, and a single tool having a diameter designated by this diameter designating means is taken out from the tool magazine and replaced with the single tool attached to the main body of the processing machine. A correction means for correcting the diameter of the rotating tool is provided in preparation for the next machining consisting of a command signal generation means for issuing a tool exchange command to be attached to the machine body, and a single tool designated by the tool exchange command from this correction means is provided. It is characterized in that the tool is taken out from the tool magazine and is attached to the processing machine main body instead of the single tool attached to the processing machine main body.

[Embodiment] FIG. 1 shows an embodiment of the automatic production apparatus of the present invention. The apparatus is roughly classified into a machining unit 1 such as a machining center for machining the work W, a transport unit 2 for transporting the work W processed by the machining unit 1, and a work W transported by the transport unit 2. Can be classified into a measuring unit 3 as a correcting unit that gives a tool selection command to the processing unit 1 based on the measurement result.

First, the processing unit 1 includes a processing machine main body 11 that cuts a work W using a rotary tool, and a tool magazine 12 that accommodates a plurality of specific tools corresponding to respective processing locations of the work W.
And a tool exchanging device 13 as a tool exchanging means for taking out one specified specific tool from the tool magazine 12 and attaching / detaching it to / from the machine body 11, and the machine body 1
1, a tool magazine 12, and a tool changing device 13 and a control device 14 having a built-in processing program for operating the tool changing device 13 in accordance with a preset predetermined procedure.

The processing machine main body 11 has, for example, a main shaft 16 which is movable in a three-dimensional direction with respect to a table 15 on which a work W is placed, that is, X, Y, and Z axis directions orthogonal to each other and which is rotationally driven about the Z axis. In addition, the main shaft 16 is moved in the three-dimensional direction based on the drive command DC (x, y, z) from the controller 14. The moving position of the main shaft 16 in the three-dimensional direction is detected by a position detector (for example, an inductosyn, a resolver, etc.) not shown, and then, is sent to the control device 14 as position data P (x, y, z). Feedback has been given.

Further, the tool magazine 12 is, as shown in FIG.
An endless chain 20 wound around a plurality of sprockets (not shown), a plurality of tool pots 21 sequentially connected to the chain 20 at regular intervals, and the controller 14
And any one of the designated tool pots 21 that drives the chain 20 in response to a tool selection command from the measuring unit 3.
To the tool exchange position TCP (position facing the tool exchange device 13). Specific tools 23A, B, C, ... Corresponding to the respective processing locations of the work W are detachably held in advance in the tool pots 21 via tool holders (not shown). Each of the specific tools 23A, B, C, ... Is configured as a set of a plurality of single tools of the same kind, which differ in diameter by a minute dimension from each other within the tolerance of the machining location of the work W to which the specific tool corresponds.

For example, when machining the workpiece W shown in FIG.
(Target value 20φ, tolerance +0.1) is reamed through the specific tool 23A, and the contour S (L ₁ = 150 mm, tolerance +
0.1, L ₂ = 100 mm, tolerance −0.1) specified tool 2
In the case of machining with 3B, the specific tool 23A has four diameters (tool diameter = 20.04φ, 20.05φ, 20.
06φ, 20.07φ) reamers 23A _{1 to} 23A ₄ , and the specific tool 23B has 5 different diameters by 1/100 mm (tool diameter d = 20.00φ, 20.01).
φ, 20.02φ, 20, 03φ, 20.04φ) end mills 23B _{1 to} 23B ₅ . Furthermore, regarding the other specific tools 23C and 23D, a plurality of single tools of the same kind whose diameters are different from each other by a minute dimension (for example, 6 drills 23C _{1 to} 23C ₆ and 4 taps 23D _{1 to} 23D _4).
Etc.) respectively. Here, the single tool group constituting one specific tool 23A, B, C ... Is the chain 20.
Are sequentially accommodated in the tool pots 21 within a predetermined range that are continuously connected to each other.

Further, the tool changing device 13 is arranged so that the X of the spindle 16 is guided along the guide rail 31 as shown in FIGS. 2 and 3.
Drive device 32 movably provided in the same direction as the axial direction
A swivel shaft 33 provided on the drive device 32 so as to be able to ascend and descend in the same direction as the Z-axis direction of the main shaft 16 and swivelable about the Z-axis; and an arm 34 connected to the lower end of the swivel shaft 33. It consists of At both ends of the arm 34,
Single tool and spindle 16 housed in tool magazine 12
The holding claws 35 are formed so as to respectively engage with the single tools attached to the.

As a result, in the tool changing device 13, the drive device 32 moves to the tool magazine 12 side based on the tool selection command from the control device 14, and the holding claw 3 on the tool magazine 12 side.
5, the tool at the tool exchange position TCP is held, then the drive device 32 moves to the spindle 16 side, and the holding pawl 35 on the spindle 16 side holds the tool attached to the spindle 16.
After that, the arm 34 is turned over 180 degrees by descending and turning of the turning shaft 33, and then the tool taken out from the tool magazine 12 is held on the main shaft 16. In this way, the single tool of the spindle 16 and the single tool of the tool magazine 12 are exchanged with each other by the operation of the tool changing device 13.

In addition to the processing program for operating the processing machine main body 11 and the like in a predetermined procedure, the control device 14 also includes a specific tool 23 accommodated in the tool magazine 12.
For each single tool constituting A, B, C ... A tool file list for storing information about the tool, for example, a tool number, a tool name, a nominal diameter, a material, a tool length, etc. is provided, and each tool is provided. There is provided a tool address list that stores in which tool pot 21 the tool is stored.

Next, the transfer unit 2 transfers the work W processed by the processing unit 1 to the measurement unit 3, and is configured by, for example, a transfer robot 41. While the work W is conveyed from the processing unit 1 to the measuring unit 3 by the robot 41, a chip removing device 42 for removing deposits such as chips adhering to the work W, and a work heated to a high temperature by cutting. Temperature control device 43 for cooling W to a constant temperature, that is, room temperature
And are provided respectively. The chip removing device 42
Is provided with, for example, an arch-shaped enclosure along the passage through which the work W passes, and the constant temperature air / water supply device 4 is provided from the enclosure.
The constant temperature air having a constant temperature obtained by 4 is blown toward the work W, thereby removing chips and the like adhering to the work W. Further, the temperature control device 43 installs a water tank filled with constant temperature water of a constant temperature obtained by the constant temperature air / water supply device 44 along the conveyance path of the work W that has passed through the chip removing device 42, and this water tank The work W is conveyed while being dipped therein, and thereby the temperature of the work W is kept at a constant temperature (for example, 20 ° C.).

As shown in FIG. 4, in the constant-temperature air / water supply device 44, a bulging portion 46 is formed in the middle of a blower pipe 45 that supplies compressed air to the swarf removing device 42. A water supply pipe 48 for supplying the constant temperature water, which has been heated to a constant temperature (20 ° C.) by the water temperature controller 47, to the temperature control device 43 is bent and housed in a bellows shape. A large number of heat radiation fins 49 are attached to the bent portion of the water supply pipe 48. Further, the compressed water temperature controller 47 is connected to the other end of the return path 50 whose one end is connected to the downstream side of the bulging portion 46 of the water supply pipe 48 and one end of the return path 50. A signal is given from a water temperature sensor 51 which detects the water temperature on the slightly upstream side of the connected water supply pipe 48. As a result, the pressurized water temperature controller 47 adjusts the temperature of the water flowing through the water supply pipe 48 to, for example, 20 ° C. according to the outlet water temperature of the water supply pipe 48 detected by the water temperature sensor 51. Therefore, the compressed air supplied into the bulging portion 46 is also kept at a constant temperature by the heat radiation from the hot water flowing through the water supply pipe 48.

Next, the measuring section 3 is a three-dimensional measuring machine 61 as a measuring machine main body for measuring the size and the like of the work W conveyed by the conveying section 2, and the measurement measured by the three-dimensional measuring machine 61. An arithmetic processing unit 62 which calculates a measured value such as a dimension from data and outputs a tool selection command to the tool magazine 12 of the processing unit 1 based on a processing error of the measured value with respect to a processing target value, and the arithmetic processing unit. And a display storage device 63 for displaying and storing the measured values such as the dimensions obtained in 62.

The coordinate measuring machine 61, as shown in FIG.
Support columns 73 are provided on both sides of the surface plate 71 on which the table is mounted via guide rails 72 with respect to the surface plate 71 in the front-back direction (Y-axis direction).
At the upper part between the columns 73, a slider 75 is provided in the left-right direction (X-axis direction) with respect to the surface plate 71 via two slider guide rails 74, and a touch signal probe 76 is attached to the lower end of the slider 75. The spindles 77 included therein are provided movably in the vertical direction (Z-axis direction) with respect to the surface plate 71.

As a result, when the touch signal probe 76 is moved in the three-dimensional direction via the moving mechanism 78 including the column 73, the slider 75, and the spindle 77, the position of the touch signal probe 76 in the X-axis direction is set at the slider guide rail 74 and the slider. The X-axis displacement detector 81 (see FIG. 6) provided between the guide rail 7 and
2 and the Y-axis displacement detector 82 provided between the column 73
(See FIG. 6), the Z-axis position is further detected by a Z-axis displacement detector 83 (see FIG. 6) provided between the slider 75 and the spindle 77.
It is given to the arithmetic processing unit 62.

In the arithmetic processing unit 62, as shown in FIG. 6, when the touch signal probe 76 is turned on by the contact with the work W, it is measured by the X, Y, Z axis displacement detectors 81, 82, 83. Measurement data processing circuit 9 for processing data
1 is provided. The data processed by the measurement data processing circuit 91 is stored in the display storage device 63 and displayed digitally, and is also given to the error discriminating circuit 92 as a comparing means.

The error discriminating circuit 92 compares the measured value obtained by the measured data processing circuit 91 with a machining target value stored in advance in the reference value storage circuit 93 to obtain a machining error, and the machining error is used as a diameter designating means. To the tool selection circuit 94. In the reference value storage circuit 93, processing target values are preset for each processing location of the work W. For example, in the machining of the work W shown in FIG. 7, the machining target value of the hole H is 20.05 mm, the machining target value of the contour S is L ₁ = 150.05 mm, L ₂ = 99.
95mm is preset.

Further, the tool selection circuit 94 stores in advance the deviation of the tool diameter from the machining target value corresponding to the tool number of each tool housed in the tool magazine 12. The tool selection circuit 94 selects a tool number having a diameter suitable for reducing the processing error based on the processing error given from the error determination circuit 92, and outputs this via an output circuit 95 as command signal generating means. Feedback to the tool magazine 12. As a result, the tool magazine 12
In the next machining of the work W, one of the specific tools is changed in advance by a command from the control device 14 to the tool change position TC.
In the state of being positioned at P, the single tool having the tool number selected by the tool selection circuit 94 among the specific tools is positioned so as to come to the tool replacement position TCP. as a result,
The single tool positioned at the tool exchange position TCP is used for machining the next work W.

Next, the operation of this embodiment will be described. First, after setting the work W on the table 15 of the processing machine main body 11 of the processing unit 1, when the control device 14 is started, the processing machine main body 1 is processed according to a processing program stored in advance in the control device 14.
One spindle 16, the tool magazine 12, and the tool changer 13 are driven. For example, in the reaming process of the hole H of the work W, first, the tool magazine 12 is rotated to rotate the hole H.
After a single tool, for example, the reamer 23A ₂ is positioned at the tool exchange position TCP from the specific tools 23A corresponding to the machining location of the above, and then the single tool 23A ₂ is attached to the spindle 16 by the tool exchange device 13. The work W is processed by the movement of the spindle 16. After the processing is completed, the tool magazine 12 is rotated to rotate the tool magazine 12 to the next processing location, that is, one single tool from the specific tools 23B corresponding to the contour S,
For example, the end mill 23B ₃ is positioned at the tool changing position TCP, and then the single tool 23B ₃ is moved to the tool changing device 1
After being attached to the spindle 16 by 3, the workpiece W is processed by the movement of the spindle 16. In this way
Based on a machining program preset in the control device 14, the workpiece W is automatically machined in a plurality of steps.

The workpiece W processed by the processing machine main body 11 is first transported by the transport unit 2 while the chips adhering to the workpiece W are removed by the chip removing device 42, and then the temperature control device 43. After the temperature of W is kept constant, for example, 20 ° C., it is conveyed to the measuring unit 3.

The work W conveyed to the measuring unit 3 is measured by the coordinate measuring machine 6
1 measures the dimension of the processed part. To this end, after the work W is set on the surface plate 71, the touch signal probe 76 is moved in the three-dimensional direction via the moving mechanism 78, and is sequentially brought into contact with the processed portion of the work W. Then, when the touch signal probe 76 is turned on by the contact with the work W, the data of the X, Y, Z axis displacement detectors 81, 82, 83 are taken into the measurement data processing circuit 91 of the arithmetic processing unit 62.

The measurement data processing circuit 91 obtains the dimension of the processed portion from these data, stores it in the display storage device 63 and digitally displays it, and supplies it to the error determination circuit 92. The error discriminating circuit 92 compares the data given from the measurement data processing circuit 91 with the machining target value preset for each machining location in the reference value storage circuit 93, finds the machining error, and uses this to calculate the machining error. It is given to the selection circuit 94. The tool selection circuit 94 selects a tool number having a diameter that reduces the machining error given from the error determination circuit 92, and outputs this to the output circuit 9.
5 to the tool magazine 12.

For example, if the measured value when the reamer 23A ₂ of the specific tool 23A is used to machine the hole H of the workpiece W is 0.01 mm smaller in diameter than the machining target value, then the machining error will occur in the tool selection circuit 94. It is judged whether or not it exceeds a certain reference value (for example, the dimensional difference between individual tools), and when it exceeds, a reamer 23A ₃ having a diameter 0.01 mm larger than the machining target value is selected and the tool is selected. The number is given to the tool magazine 12. As a result, when machining the next hole H of the work W, the reamer 23A ₂ of the tool magazine 12 is moved to the tool replacement position TCP by a command from the control device 14.
After being positioned at, the reamer 23A ₃ is positioned at the tool exchange position TCP by the tool selection command from the tool selection circuit 94. Thereafter, the main shaft 1 reamer 23A ₃ positioned to the tool changing position TCP via the tool changer 13
It is attached to 6 and used for the next processing. In this way, based on the machining error of the previously machined work W with respect to the machining target value, a single tool that reduces the machining error is used for machining the next work W.

Therefore, according to the present embodiment, the dimension of the workpiece W that has been machined before is measured, and this dimension is compared with the machining target value of the machining location, and a single tool having a diameter that reduces the machining error is used as the next workpiece. Since the selection is made for the machining of the machining portion of W, the machining close to the target value can be performed without changing the machining program stored in the control device 14. Therefore, the time and labor required for changing the machining program are not required, and continuous operation is possible without changing the mechanical and electrical characteristics of the machinin center, which is determined by various complicated factors. High quality products with small dimensional variation can be processed regardless of the processing order.

This has the advantage that the time and effort for making corrections in consideration of the amount of tool wear can be saved.

Also, in setup work, it is not necessary to prepare a large number of tools with the same diameter as in the past, and repeated work of trial cutting that requires skill is not required, so setup work is quick and easy, and economical. Target. Therefore, it is possible to solve all of the above-mentioned problems (1), which were bothersome and inefficient when using the conventional machining center. Moreover, the fact that it is not necessary to align tools with the same diameter has the advantage that even if each tool wears due to machining, it can be diverted to another machining location.

Further, as a result of feeding back the measurement result from the measuring unit 3 to the processing unit 1, a completely unmanned operation is possible. Moreover, since the feedback signal is the tool number selected by the arithmetic processing unit 62, there is an advantage that the signal can be easily transmitted and processed, and those devices can be configured extremely easily.

Further, since the work W processed by the processing unit 1 is conveyed to the measuring unit 3 by the conveying means 41, if the measuring unit 3 is automatically formed, unmanned operation of all steps can be performed. Moreover, since the chip removing device 42 and the temperature control device 43 are provided during the transportation, the work W measured by the measuring unit 3 is free of chips and the like and has a constant temperature. You can expect measurement.

Further, since the work W is measured by the coordinate measuring machine 61, it is possible to measure the dimensions and the like of the processed portion of the work W with high accuracy. Moreover, since the machining system and the measurement system are separated, higher precision measurement can be performed without being influenced by the error of the machining system as compared with, for example, a machine having a measuring function in the machining system. Therefore, even when the tool number is fed back to the control device 14, the tool can be selected accurately and accurately.

In the present embodiment, the machining unit 1 is described as a machining center, but it is equipped with a function of automatically exchanging a plurality of tools with respect to the spindle of the main body of the machine and automatically controlling the movement locus of the spindle. Any machine may be used.
Further, the processing machine main body 11 may be configured such that the main shaft 16 can be displaced in the vertical direction with the Y axis as a fulcrum, in addition to the three-dimensional direction. Further, although the single tool is continuously stored in the tool magazine 12 for each specific tool, for example, a disk capable of storing a plurality of single tools is rotatably attached to the chain 20 of the tool magazine 12 and the same kind of disk is attached to the disk. Each of the single tools may be stored, the disc of the specific tool group designated by the command from the control device 14 may be positioned at the tool exchange position, and the disc angle may be determined by the command from the arithmetic processing device.

Further, as a means for conveying the work W processed by the processing section 1 to the measuring section 3, a means such as a crane operated by a person may be used instead of an automatic means.
In this case, if the chip removing device 42 and the temperature control device 43 are provided in the middle of the movement path of the crane and the work W is temporarily stopped at these positions, the chip removing device 42 and the temperature control device 43 can be used. The function of the control device 43 is not hindered.

Further, as the main body of the measuring machine, in addition to the manual three-dimensional measuring machine described in the above embodiment, for example, an automatic three-dimensional measuring machine that automatically moves the touch signal probe 76 according to a preset locus program. But it's okay. Furthermore, the pillar 7
Instead of fixing 3, the surface plate 71 is movable in the Y-axis direction, and a plurality of touch signal probes adapted to respective measurement points of the work W are detachably set in advance on a part of the surface plate 71. Every time, the work W is selected from the plurality of touch signal probes while automatically controlling the movement of the spindle 77 in the Z-axis direction, the movement of the slider 75 in the X-axis direction, and the movement of the surface plate 71 in the Y-axis direction. If a three-dimensional measuring machine configured to select a probe suitable for the measuring point and automatically attach it to the spindle 77, all the measuring points can be automatically measured. In addition to the three-dimensional measuring machine, a two-dimensional measuring machine or a touch signal probe that can be attached to the spindle of a machining center and the touch signal probe can be used to measure the size of the machining point of the workpiece W Good.

Further, in the above-described embodiment, the tool magazine 12 is driven by the tool selection command from the tool selection circuit 94, but the tool selection command from the tool selection circuit 94 is given to the control device 14, and the control device 14 outputs the tool selection command. The tool magazine 12 may be driven by a command.

[Effects of the Invention] As described above, according to the present invention, there is provided an automatic production apparatus capable of achieving highly accurate machining with less variation without lowering productivity and workability, and improving setup work at the same time. be able to.

[Brief description of drawings]

FIG. 1 shows an embodiment of the automatic production apparatus of the present invention. FIG. 1 is a block diagram showing the overall configuration, FIG. 2 is a plan view showing the outline of a tool magazine, and FIG. 3 is a tool changer and control. FIG. 4 is a view showing the relationship with the device, FIG. 4 is a view showing a constant temperature air / water supply device, FIG. 5 is a perspective view showing a coordinate measuring machine, FIG. 6 is a block diagram showing an arithmetic processing device, and FIG. 7 is a work. It is a figure which shows the example of processing. 3 ... Measuring section as correction means, 11 ... Processing machine main body,
12 ... Tool magazine, 13 ... Tool changing device as tool changing means, 14 ... Control device, 23A, B, C ...
... specific _tool, 23A 1 _{~23A 4} ...... reamer as a single _tool, 23B 1 _{~23B 5} ...... end mill as a single _tool, 23C 1 _{~23C 6} ...... drill as a single tool, 2
3D _{1 to} 23D ₄ ... Tap as a single tool, 61 ...
A three-dimensional measuring machine as a measuring machine main body, an error discriminating circuit 92 as a comparing means, a tool selecting circuit as a diameter specifying means 94, and an output circuit as a command signal generating means 95.

Claims (1)

[Claims] 1. A processing machine main body for cutting a work with a rotary tool, a tool magazine accommodating a specific tool corresponding to each processing location of the work, and one specific tool taken out from the tool magazine In an automatic production apparatus including a tool changing device that is attached to and detached from a machine, and a control device that incorporates a processing program for operating the processing machine body and the like in a predetermined procedure, the specific tools have diameters that differ from each other by a minute dimension. While forming as a set of a plurality of single tools of the same kind, each set is housed in the tool magazine, and a measuring machine body for measuring the dimensions of the workpiece processed by the processing machine body, and this measuring machine body A comparison means for obtaining a processing error by comparing the measured value measured with a preset processing target value, and the processing error based on the processing error obtained by this comparison means. In order to reduce the diameter of the single tool to determine the appropriate diameter of the single tool, take out the single tool of the diameter specified by this diameter specifying means from the tool magazine and replace it with the single tool attached to the machine body. A correction means for correcting the diameter of the rotating tool is provided in preparation for the next processing, which comprises a command signal generating means for issuing a tool exchange command to be attached to the main body of the processing machine, and a single tool designated by the tool exchange command from the correction means. Is taken out from the tool magazine and is configured to be attached to the main body of the processing machine instead of the single tool attached to the main body of the processing machine.