JP4028065B2 - Positioning control device and positioning method for insertion machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention, for example, in a grinding machine that grinds the inner surface of a caliber formed on a carbide roll by abutting the tip of a grinding wheel inserted into the caliber, positions the grinding wheel and the caliber before grinding. The present invention relates to a positioning control device and a positioning method.
[0002]
[Prior art]
Examples of this type of grinding machine include those shown in FIGS. 7 (a) and 7 (b). In order to grind the inner surface of the caliber 101b with this grinder, first, the grinding wheel 61 is moved based on position data or the like input in advance, and positioned with respect to the roll 101 to align with the caliber 101b. In this state, grinding is performed by inserting the tip of the grinding wheel 61 to be rotationally driven into the caliber 101b of the roll 101 that is also rotationally driven, and bringing the outer surface of the tip into contact with the inner surface of the caliber 101b.
[0003]
[Problems to be solved by the invention]
However, as shown in FIG. 7B, even if the grinding wheel 61 is positioned numerically and the caliber 101b and the center are aligned with each other, in reality, both the 61 and 101b are caused by errors in the position data etc. inputted in advance. For example, a deviation of about several μm to several tens of μm may occur between the centers. If grinding is performed while the center of the grinding wheel 61 and the caliber 101b is shifted, the processing accuracy of the caliber 101b is reduced, or the grinding distance in the depth direction of the caliber 101b is increased, which takes time for processing. Has occurred. For easy understanding, the center shift is exaggerated in FIG.
[0004]
The present invention has been made paying attention to the problems existing in the above-described conventional technology, and the purpose thereof is an insertion that can accurately position the insert and the recessed portion of the inserted body into which the insert is inserted. An object of the present invention is to provide a positioning control device and positioning method for a machine.
[0005]
[Means for Solving the Problems]
  In order to achieve the above object, in the invention of claim 1, in an insertion machine for inserting an insert into a recess formed in an insert,A detection liquid supply means for supplying a conductive detection liquid between the insertion body and the insertion body, a detection power supply means for feeding power between the insertion body and the insertion body, and the insertion body and the insertion body. Measuring means for measuring the current value or voltage value between, and determination means for determining whether or not the current value or voltage value measured by the measuring means exceeds a threshold valueA proximity sensor;On computer recording mediaBased on the position data input in advance, the inserted body and the inserted body are moved relative to each other,The center of the recess of the inserted objectInsertWith the centerPre-positioning means for pre-positioning the insert and insertCenter ofAnd recessCenter ofFirst moving means for relatively moving the insertion body and the insertion body to one side in the width direction of the recess, and the insertion body and the insertion body by the first movement means. Is relatively moved to one side in the width direction of the recess,SaidProximity sensorThe determination means determines that the current value or voltage value has exceeded the threshold value, andWhen proximity of a predetermined distance is detected, first proximity position storage means for storing the positional relationship between the insertion body and the insertion object at that time as a first proximity position; A second moving means for relatively moving the other side in the width direction; and the second moving means causes the insert and the inserted body to be relatively moved to the other side in the width direction of the recess;SaidProximity sensorThe determination means determines that the current value or voltage value has exceeded the threshold value, and the predetermined distance between the inserted body and the inserted bodyWhen proximity is detected, second proximity position storage means for storing the positional relationship between the insertion body and the insertion object at that time as a second proximity position; first proximity position storage means; and second proximity position Based on the first proximity position data and the second proximity position data stored in the storage means, the inserted body and the inserted body areIn the width direction of the recessRelative movement, insertCenter ofAnd recessCenter ofIs a positioning control device provided with substantial positioning means for substantially positioning the.
[0006]
  In the invention of claim 2, the first moving means is an insert.Center ofAnd recessCenter ofAnd the inserted body and the body to be inserted are moved relatively close to each other in the depth direction of the recess, and the proximity sensorA predetermined distance between the insert and the insertWhen proximity is detected, the insertion body and the insertion body are moved relative to each other in the depth direction of the groove from the position at that time, and then the insertion body and the insertion body are moved to one side in the width direction of the recess. Relative movement.
[0007]
In the invention of claim 3, the insertion machine is a grinding machine, and the grinding machine includes a grinding wheel as an insert, and the tip of the grinding wheel is formed in a groove as a recess formed in a work as an inserted body. It is the structure which inserts and grinds the inner surface of this groove | channel.
[0008]
In the invention of claim 4, the work is a roll, and the groove is a caliber formed on the outer peripheral surface of the roll.
In the invention of claim 5, the grinding machine includes an electrolytic machining fluid supply means for supplying an electrolytic machining fluid between the grinding wheel and the workpiece, and an electrolytic grinding power supply means for feeding power between the grinding wheel and the workpiece. An electrolytic grinding machine that performs electrolytic grinding by electrolytic action generated between a grinding wheel and a workpiece.
[0010]
  Claim6In this invention, the detection liquid is an electrolytic processing liquid, the electrolytic processing liquid supply means also serves as the detection liquid supply means, and the electrolytic grinding power supply means also serves as the detection power supply means.
[0011]
  In the invention of claim 7,A detection liquid supply means for supplying a conductive detection liquid between the insertion body and the insertion body, a detection power supply means for feeding power between the insertion body and the insertion body, and the insertion body and the insertion body. A proximity sensor comprising a measuring means for measuring a current value or a voltage value between, and a judging means for judging whether or not the current value or voltage value measured by the measuring means exceeds a threshold value,In an insertion machine that inserts an insertion body into a recess formed in the insertion body, the insertion body and the insertion body are moved relative to each other based on position data input in advance to a computer recording medium, and The center and the center of the insert are preliminarily positioned. With the center of the insert and the center of the recess of the insert to be preliminarily positioned, the insert and the insert are placed in the width direction of the recess. Move it relative to one side,SaidProximity sensorThe determination means determines that the current value or voltage value has exceeded the threshold value.When proximity of a predetermined distance between the inserted body and the inserted body is detected, the positional relationship between the inserted body and the inserted body at that time is set as the first proximity positionIn the first proximity position storage meansStoring, and relatively moving the insert and the insert to the other side in the width direction of the recess,SaidProximity sensorThe determination means determines that the current value or voltage value has exceeded the threshold value.When proximity of a predetermined distance between the inserted body and the inserted body is detected, the positional relationship between the inserted body and the inserted body at that time is set as the second proximity positionIn the second proximity position storage meansBased on the stored first proximity position data and second proximity position data, the insertion body and the insertion object are relatively moved in the width direction of the recess, and the center of the insertion body and the center of the recess are substantially changed. It is a positioning method that positions automatically.
[0012]
    (Function)
  Claim 1 of the above configuration and7In the invention, based on the position data input in advance, the insert and the insert are relatively moved,The center of the recess of the inserted objectInsertWith the centerAre preliminarily positioned.The detection liquid is supplied between the inserted body and the inserted body by the detection liquid supply means. Power is supplied between the inserted body and the inserted body by the power supply means for detection. A current value or a voltage value between the inserted body and the inserted body is measured by the measuring means. The determination means determines whether or not the current value or voltage value measured by the measurement means exceeds a threshold value.
[0013]
  InsertCenter ofAnd recessCenter ofAnd the inserted body and the inserted body are relatively moved to one side in the width direction of the recess. In particular, in the invention of claim 2, the insertCenter ofAnd recessCenter ofAre moved in relative proximity to each other in the depth direction of the recess. By proximity sensorA predetermined distance between the insert and the insertWhen the proximity is detected, the insertion body and the insertion body are moved relative to each other in the depth direction of the groove by a slight amount from the position at that time. Thereafter, the insert and the insert are relatively moved to one side in the width direction of the recess.
[0014]
  The inserted body and the body to be inserted are moved relative to one side in the width direction of the recess, and the proximity sensorBetween inserted body and inserted bodyWhen proximity of a predetermined distance is detected, the positional relationship between the inserted body and the inserted body at that time is stored as the first proximity position. The inserted body and the inserted body are moved relative to the other side in the width direction of the recess, and the proximity sensorBetween inserted body and inserted bodyWhen proximity of a predetermined distance is detected, the positional relationship between the inserted body and the inserted body at that time is stored as the second proximity position. Then, based on the stored first proximity position data and second proximity position data, the inserted body and the inserted body areIn the width direction of the recessRelatively moved and insertCenter ofAnd recessCenter ofAre substantially positioned.
[0015]
In the invention of claim 3, the tip of the grinding wheel is inserted into the groove formed in the workpiece, and the inner surface of the groove is ground.
In the invention of claim 4, the tip of the grinding wheel is inserted into the caliber formed on the roll, and the inner surface of the caliber is ground.
[0016]
In the invention of claim 5, the electrolytic machining fluid is supplied between the grinding wheel and the workpiece by the electrolytic machining fluid supply means, and power is supplied between the grinding wheel and the workpiece by the electrolytic grinding power supply means. The inner surface of the groove of the workpiece is ground by the electrolytic action generated between the vehicle and the workpiece.
[0018]
  Claim6In this invention, the electrolytic processing liquid is supplied between the insert and the inserted body by the electrolytic processing liquid supply means. Power is supplied between the inserted body and the inserted body by the power supply means for electrolytic grinding. A current value or a voltage value between the inserted body and the inserted body is measured by the measuring means. The determination means determines whether or not the current value or voltage value measured by the measurement means exceeds a threshold value.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment in which the positioning control device and the positioning method of the present invention are embodied in a roll automatic machining system will be described.
[0020]
1-3 is a figure which shows the whole roll automatic processing system. This system includes a work stock device 11, a work transfer device 12, a work cleaning device 13, a grinding machine 14 as an insertion machine, and a control computer 15.
[0021]
The work stock apparatus 11 has an endless chain 21 that is operated in a circular motion. The plurality of workpiece supports 22 are respectively connected to the chain 21. Each workpiece support 22 is rotated in a plane by the traveling of the chain 21 with the carbide roll 101 placed thereon. A plurality of rolls 101 stocked in the work stock apparatus 11 are mixed with a roll material for a new work newly produced this time and a corrected product whose surface is ground again for reuse.
[0022]
The workpiece transfer device 12 includes a guide rail 24. The guide rail 24 is installed between the work stock device 11 and the grinding machine 14. The arm 25 is supported by the guide rail 24, and can be slidably moved between the sky above the loading / unloading position of the work stock device 11 and the sky of the headstock 16 by the guide. The arm 25 includes a hand 25a at the tip. The hand 25a can move in the vertical direction and can hold the roll 101. The work transfer device 12 carries one of the plurality of rolls 101 into the grinding machine 14 from the work stock device 11 and carries out the roll 101 processed by the grinding machine 14 to the work stock device 11. To do.
[0023]
The workpiece cleaning device 13 has a cleaning container 13a, and the surface of the roll 101 is removed by spraying cleaning water or air onto the processed roll 101 placed in the cleaning container 13a.
[0024]
The grinding machine 14 includes a bed 26. The saddle type headstock 16 is disposed at the center of the bed 26. The head stock 16 is rotationally driven by a drive motor 27. The headstock 16 can fix and support the roll 101 at a coaxial position. The column 31 is erected on the bed 26.
[0025]
The grinding machine 14 includes an outer peripheral grinding device 17 and a caliber grinding device 18. The head 32 constituting the outer peripheral grinding device 17 and the head 33 constituting the caliber grinding device 18 are each attached to the front surface of the column 31 via a biaxial drive mechanism 34. The heads 32 and 33 are moved in the left-right direction and the up-down direction in FIG. 3 by driving the biaxial drive mechanism 34, respectively. Both heads 32 and 33 are provided with bowl-shaped grinding wheel shafts 35 and 36, and a grinding wheel 37 for outer periphery grinding is fixed to the grinding wheel shaft 35, and a grinding wheel 38 for caliber grinding is fixed to the grinding wheel shaft 36, respectively. Although not shown, the grinding wheels 37 and 38 are manufactured by solidifying abrasive grains such as diamond with conductive bonds and molding them into a disk shape. In particular, the cross section at the tip of the grinding wheel 38 has a semicircular shape. The grindstone shafts 35 and 36 are rotationally driven by a drive motor 39.
[0026]
As shown in FIGS. 1 and 4, the machining liquid supply device 43 as the machining liquid supply means and the detection liquid supply means includes a machining liquid nozzle 42. The machining liquid nozzle 42 is fixed to the heads 32 and 33. The power supply device 46 as an electrolytic grinding power supply means and a detection power supply means includes a power source 46a, the cathode is connected to the grinding wheels 37 and 38 of the grinding devices 17 and 18, and the anode is connected to the roll 101 via the headstock 16. It is connected. A current measuring device 47 as a measuring means is interposed on the power supply line of the power supply device 46 and measures a current value flowing between the grinding wheel 38 and the roll 101.
[0027]
Although not shown, the computer 15 includes a storage circuit, an arithmetic circuit, and the like. According to a program stored in advance, the type of the roll 101 inputted in advance, the position and processing information of the caliber 101b, the positions of the grinding wheels 37 and 38, etc. Control the system based on the data.
[0028]
Next, the operation of the roll automatic machining system controlled by the computer 15 will be described.
When the program is started, the work stock apparatus 11 is operated, and the work support 22 supporting the roll 101 to be processed is displaced to the loading / unloading position. The roll 101 displaced to the loading / unloading position is conveyed toward the grinding machine 14 by the operation of the workpiece conveying device 12. The roll 101 carried into the grinding machine 14 is transferred to the headstock 16 and fixed to the headstock 16.
[0029]
While the roll 101 is fixed, the rotation of the headstock 16 is started, and the rotation of the grinding wheels 37 and 38 is started. The grinding wheels 37 and 38 are moved based on position data stored in advance and positioned with respect to the roll 101.
[0030]
Here, particularly when the roll 101 to be processed is a corrected product, the following positioning control of the grinding wheel 38 with respect to the roll 101 is performed by the computer 15, which is a characteristic point of the present embodiment.
[0031]
First, the proximity sensor is activated as a preparation. That is, the machining fluid supply device 43 is operated, and the electrolytic machining fluid R that also serves as the detection fluid is supplied between the grinding wheels 37 and 38 and the roll 101 via the machining fluid nozzle 42. The grinding wheels 37 and 38 and the roll 101 are electrically connected by the interposition of the electrolytic machining liquid R. The power feeding device 46 is operated, and a predetermined constant voltage is applied between the grinding wheels 37 and 38 and the roll 101. The current measuring device 47 measures the current value between the grinding wheel 38 and the roll 101. The computer 15 compares the input current value from the current measuring device 47 with a previously stored threshold value, and determines whether or not the input current value exceeds the threshold value.
[0032]
.Preliminary positioning means
As shown in FIG. 6A, the grinding wheel 38 is moved based on position data or the like input in advance, and is preliminarily positioned with respect to the caliber 101b. In this state, as described in the prior art, a deviation of, for example, about several μm to several tens of μm may occur between the centers of both 38 and 101b due to an error of position data inputted in advance. Subsequent operations are performed to eliminate this deviation. In the drawings, the shift of the center is exaggerated for easy understanding.
[0033]
.First moving means
As shown in FIG. 6B, the preliminarily positioned grinding wheel 38 is moved close to the roll 101 in the depth direction of the caliber 101b. When the shortest distance between the grinding wheel 38 and the roll 101 is a predetermined distance (for example, several μm), the electric current is reduced due to the small amount of the electrolytic processing liquid R that becomes electric resistance between the two 38 and 101b at the shortest distance. The input current value input from the measuring device 47 exceeds a threshold value stored in advance. When the input current value exceeds the threshold value, the movement of the grinding wheel 38 is stopped.
[0034]
As shown in FIG. 6C, the grinding wheel 38 is moved slightly away from the stop position in the depth direction of the caliber 101b with respect to the roll 101, and the input current value from the current measuring device 47 becomes the threshold value. Leave the situation above the value. Then, the grinding wheel 38 is moved to the upper side of the drawing in the width direction of the caliber 101b with respect to the roll 101.
[0035]
.First proximity position storage means
As shown in FIG. 6D, when the input current value from the current measuring device 47 exceeds the threshold value, the movement of the grinding wheel 38 is stopped. This stop position is stored as the first proximity position.
[0036]
.Second moving means
The grinding wheel 38 in the first proximity position is moved to the lower side of the drawing in the width direction of the caliber 101b without changing the positional relationship in the depth direction of the caliber 101b with respect to the first proximity position. Therefore, the situation where the input current value from the current measuring device 47 exceeds the threshold value is temporarily removed.
[0037]
.Second proximity position storage means
As shown in FIG. 6 (e), when the input current value from the current measuring device 47 exceeds the threshold value again, the movement of the grinding wheel 38 is stopped. This stop position is stored as the second proximity position.
[0038]
.Substantial positioning means
As shown in FIG. 6 (f), the grinding wheel 38 is calculated based on the stored first proximity position data and second proximity position data, in the case of this embodiment, the first proximity position. It is moved and arranged at an intermediate position with respect to the second proximity position. That is, the first proximity position of the grinding wheel 38 and the second proximity position of the grinding wheel 38 are considered to have a line-symmetrical positional relationship with respect to the center of the caliber 101b in FIG. By moving the grinding wheel 38, the substantial positioning of the grinding wheel 38 with respect to the caliber 101b is completed.
[0039]
Now, in the state where the grinding wheels 37 and 38 are positioned, the voltage value applied by the power supply device 46 is switched to electrolytic grinding, and the current density range in which a passivating film is generated on the surface of the roll 101, that is, As shown in FIG. 5, an electrolytic action is generated between the grinding wheels 37 and 38 and the roll 101 in the range of the critical current density ρ or less. Based on the machining information, the grinding wheel 37, 38 cuts the roll 101 and removes the passivation film formed on the surface of the roll 101 while simultaneously grinding the outer periphery 101a and the caliber 101b of the roll 101. Made. In particular, the tip of the grinding wheel 38 is inserted into the caliber 101b, and the inner surface of the caliber 101b is ground according to the semicircular shape of the tip.
[0040]
Thus, an oxide film is formed on the surface of the roll 101 after so-called electrolytic composite grinding. Therefore, when the electrolytic combined grinding is completed, the power supply by the power supply device 46 is stopped, and the outer peripheral grinding device 17 and the caliber grinding device 18 perform mechanical grinding of the roll 101 to remove the oxide film.
[0041]
When the grinding of the roll 101 is completed, the rotation of the headstock 16 is stopped and the fixed relationship between the roll 101 and the headstock 16 is released. The processed roll 101 is carried into the cleaning container 13 a of the workpiece cleaning device 13 by the workpiece transport device 12. Next, the roll 101 to be processed is carried into the grinding machine 14 from the work stock apparatus 11 by the work conveying apparatus 12 while the processed roll 101 is cleaned by the work cleaning apparatus 13. The roll 101 that has been cleaned is unloaded from the work cleaning device 13 to the work stock device 11 by the work transport device 12 and placed on the original work support 22 while the next roll 101 is processed. .
[0042]
The above operation is repeated until all the rolls 101 stocked by the work stock apparatus 11 are processed, and the program is terminated.
In the present embodiment having the above-described configuration, the following effects are obtained.
[0043]
(1) When the roll 101 is a corrected product, the above-described positioning control can eliminate the center deviation between the grinding wheel 38 and the caliber 101b, and the grinding of the caliber 101b by the grinding wheel 38 can be performed with high accuracy. Can be done quickly.
[0044]
(2) Here, for example, in the positioning control described above, simplifying the first moving means as follows does not depart from the spirit of the present invention.
.... First moving means
As shown in FIG. 6B, the preliminarily positioned grinding wheel 38 is moved to the upper side of the drawing in the width direction of the caliber 101b with respect to the roll 101. ......
However, if an error such as the position data input in advance is greatly swung to the side where the grinding wheel 38 and the roll 101 are separated in the depth direction of the caliber 101b, the preliminarily positioned grinding wheel 38 is moved to the roll 101. On the other hand, no matter how much the caliber 101b is moved in the width direction, the shortest distance between the two 38, 101 may not be less than a predetermined distance. Therefore, there is a concern that the program does not move to the first proximity position storage means and positioning control becomes impossible.
[0045]
However, in this embodiment, the preliminarily positioned grinding wheel 38 is moved closer to the roll 101 in the depth direction of the caliber 101b. When the input current value input from the current measuring instrument 47 exceeds the threshold value, the movement of the grinding wheel 38 is stopped. The grinding wheel 38 is moved away from the stop position by a slight amount in the depth direction of the caliber 101b with respect to the roll 101, so that the grinding wheel 38 is released from the proximity situation in which the input current value from the current measuring device 47 exceeds the threshold value. . Then, the grinding wheel 38 is moved with respect to the roll 101 in the width direction of the caliber 101b.
[0046]
By adopting such a procedure, the error in the distance in the depth direction of the caliber 101b can be accurately corrected between the preliminarily positioned grinding wheel 38 and the roll 101. Therefore, when the grinding wheel 38 is moved in the width direction of the caliber 101b with respect to the roll 101, it is possible to avoid a situation in which the shortest distance between the two 38 and 101 is not less than a predetermined distance. As a result, the program can be reliably transferred to the first proximity position storage means, and it is possible to prevent the positioning control from being disabled.
[0047]
(3) The machining fluid supply device 43, the electrolytic machining fluid R, and the power feeding device 46 are shared between the proximity sensors 15, 43, 46, and 47 and the grinding machine 14. Therefore, it is not necessary to provide dedicated sensors for the proximity sensors 15, 43, 46, 47 and the grinding machine 14, and an automatic roll machining system can be provided at a low cost.
[0048]
In addition, the following aspects can also be implemented without departing from the spirit of the present invention.
In the above embodiment, the grinding machine is embodied as the insertion machine, but it may be embodied in a medium grinding machine or the like as a processing machine other than the grinding machine. This center-grinding machine inserts a center-grip bar as an insertion body into an insertion hole as a recess formed in a workpiece as an inserted body, and the center-grip bar processes the inner peripheral surface of this insertion hole. It is performed by cutting with a cutting tool.
[0049]
In the above embodiment, the processing machine is embodied as an insertion machine. However, the insertion machine other than the processing machine may be embodied in a part assembly machine. This component assembly machine inserts a part or all of the first component as an insert into a mounting hole as a recess formed in the second component as an insert, thereby assembling both components. Is to do.
[0050]
In the above embodiment, the grinding wheels 37 and 38 are moved with respect to the roll 101, but this is changed and the roll 101 (headstock 16) is moved with respect to the grinding wheels 37 and 38. You may take the structure which is.
[0051]
A technical idea that can be grasped from the above embodiment will be described.
(1) The function of supplying the workpiece 101 to the spindle 16 from the workpiece stock apparatus 11 that stocks a plurality of rolls 101 to the spindle 16 by the workpiece carry-in apparatus 12, and grinding of the outer periphery 101a of the roll 101 supplied to the spindle 16 The outer peripheral surface 101a and the caliber 101b of the roll 101 are simultaneously electrolytically ground by the outer peripheral grinding device 17 and the caliber grinding device 18 that grinds the caliber 101b of the roll 101 while sharing the main shaft 16 with the outer peripheral grinding device 17. 5. The positioning control device according to claim 4, wherein the positioning control device is applied to a roll automatic machining system having a function to perform the positioning control with respect to the roll 101 of the grinding wheel 38 when the roll 101 to be machined is a corrected product.
[0052]
  In this way, the caliber 101b of the roll 101 can be processed with high accuracy.
  (2) Claims 1 to6In the positioning control device according to any one of the above, operations of the preliminary positioning means, the first moving means, the first proximity position storage means, the second movement means, the second proximity position storage means, and the substantial positioning means A recording medium storing a program for causing the computer 15 to execute
[0053]
In this way, the insert 38 and the insert 101 can be positioned with high accuracy, and the insert 38 can be accurately inserted into the recess 101b.
[0054]
【The invention's effect】
  Claim 1 of the above configuration,5 andAnd7According to this invention, the insert and the insert can be positioned with high accuracy, and the insert can be accurately inserted into the recess.
[0055]
According to the invention of claim 2, the reliability of the positioning control device is improved.
According to invention of Claim 3, a grinding wheel and a workpiece | work can be positioned with sufficient precision and the inner surface of the groove | channel of a workpiece | work can be processed with high precision and rapidly.
[0056]
  According to the invention of claim 4, the grinding wheel and the roll can be positioned with high accuracy, and the inner surface of the caliber can be processed with high accuracy and speed.
  Claim6According to the invention, it is possible to provide a grinding machine provided with a positioning control device at a low cost by using the liquid supply means, the liquid and the power supply means together between the proximity sensor and the grinding machine.
[Brief description of the drawings]
FIG. 1 is a plan view of an automatic roll machining system.
FIG. 2 is a cross-sectional view of an automatic roll processing system.
FIG. 3 is a front view of a grinding machine.
FIG. 4 is an explanatory view of electrolytic composite grinding of a roll.
FIG. 5 is an explanatory diagram illustrating a range of current density in which a passivating film is generated.
FIGS. 6A to 6F are schematic views showing a positioning procedure of a grinding wheel for caliber grinding when a caliber of a roll as a correction product is processed.
FIG. 7A is a partial view showing a conventional grinding machine, and FIG. 7B is a schematic view exaggerating the positional relationship between the tip of a grinding wheel and a caliber.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 14 ... Grinding machine as insertion machine, 15 ... Preliminary positioning means, 1st moving means, 1st proximity position memory | storage means, 2nd moving means, 2nd proximity position memory means, and substantial positioning means Control computer 38: Grinding wheel for caliber grinding as an insert, 43 ... Processing fluid supply device constituting a proximity sensor, 45 ... Similarly power supply device, 46 ... Same current measuring device, 101 ... Roll as insert, 101b ... Caliber as a recess, R ... Electrolytic machining fluid constituting the proximity sensor.

Claims (7)

In an insertion machine that inserts an insert into a recess formed in an insert,
A detection liquid supply means for supplying a conductive detection liquid between the insertion body and the insertion body, a detection power supply means for feeding power between the insertion body and the insertion body, and the insertion body and the insertion body. A proximity sensor comprising a measuring means for measuring a current value or a voltage value between, and a determining means for determining whether or not the current value or voltage value measured by the measuring means exceeds a threshold value ;
Based on the computer previously input position data on a recording medium, the insert and the insert member are moved relative, and preliminary positioning means for positioning the center of the center and the insert recess of the insert preliminarily ,
In a state where the center of the center and the recess of the insert is positioned preliminarily, a first moving means for relatively moving the insert and the insert on one side in the width direction of the recess,
First insert the moving means and the subject insertion body is moved relative to the one side in the width direction of the recess, the current value or the determined the insertion member and the voltage value exceeds the threshold value by the determination means of the proximity sensor and when the proximity of the predetermined distance between the insert is detected, a first proximity position storing means for storing the positional relationship between the insert and the insert at that time as a first adjacent position,
A second moving means for relatively moving the inserted body and the inserted body to the other side in the width direction of the recess;
Second by the moving means insert and the subject insertion body is moved relative to the other side in the width direction of the recess, the insertion current value or voltage value by the determination means of the proximity sensor is determined to have exceeded the threshold value member Second proximity position storage means for storing a positional relationship between the insertion body and the insertion object at that time as a second proximity position when proximity of a predetermined distance between the insertion object and the insertion object is detected;
Based on the first proximity position data and the second proximity position data stored in the first proximity position storage means and the second proximity position storage means, the insertion body and the insertion body are relatively moved in the width direction of the recess. is allowed, the positioning control device that includes a substantially positioning means for substantially positioning the center of the center and the recess of the insert. Said first moving means in a state where the center of the center and the recess of the insert is positioned preliminarily, the insert and the insert member are relatively close moved in the depth direction of the recess, inserted by the proximity sensor When the proximity of a predetermined distance between the body and the inserted body is detected, the inserted body and the inserted body are moved relatively apart from each other in the depth direction of the groove from the position at that time, and then the inserted body and the inserted body are inserted. The positioning control device according to claim 1, wherein the body is relatively moved to one side in the width direction of the recess.   The insertion machine is a grinding machine, and the grinding machine includes a grinding wheel as an insert, and the tip of the grinding wheel is inserted into a groove as a recess formed in a work as an inserted body. The positioning control device according to claim 1, wherein the inner surface is ground.   The positioning control device according to claim 3, wherein the workpiece is a roll, and the groove is a caliber formed on an outer peripheral surface of the roll. The grinding machine includes an electrolytic machining fluid supply means for supplying an electrolytic machining fluid between the grinding wheel and the workpiece, and an electrolytic grinding power supply means for feeding power between the grinding wheel and the workpiece, the grinding wheel and the workpiece, 5. The positioning control device according to claim 3, wherein the positioning control device is an electrolytic grinding machine that performs electrolytic grinding by an electrolytic action generated between the two . The positioning control device according to claim 1, wherein the detection liquid is an electrolytic processing liquid, the electrolytic processing liquid supply unit also serves as the detection liquid supply unit, and the electrolytic grinding power supply unit also serves as the detection power supply unit. A detection liquid supply means for supplying a conductive detection liquid between the insertion body and the insertion body, a detection power supply means for feeding power between the insertion body and the insertion body, and the insertion body and the insertion body. A proximity sensor comprising a measuring means for measuring a current value or a voltage value between them, and a judging means for judging whether or not the current value or voltage value measured by the measuring means exceeds a threshold value. In an insertion machine for inserting an insert into a recess formed in the insert,
Based on the position data input in advance to the computer recording medium, the insert and the insert are relatively moved, and the center of the insert and the center of the insert are preliminarily positioned,
In a state where the center of the insert and the recess of the center of the insert is positioned preliminarily, the insert and the insert member are moved relative to one side in the width direction of the recess, by the determination means of the proximity sensor When it is determined that the current value or the voltage value has exceeded the threshold value and proximity of a predetermined distance between the inserted body and the inserted body is detected, the positional relationship between the inserted body and the inserted body at that time is the first proximity. Memorize | store in a 1st proximity position memory | storage means as a position ,
The insert and the insert member are moved relative to the other side in the width direction of the recess, with the current value or insert a voltage value is determined to exceed the threshold and the insertion body by the determination means of the proximity sensor When proximity of a predetermined distance is detected, the positional relationship between the inserted body and the inserted body at that time is stored in the second proximity position storage means as the second proximity position ;
Based on the stored first proximity position data and second proximity position data, the insertion body and the insertion body are moved relative to each other in the width direction of the recess to substantially position the center of the insertion body and the center of the recess. Positioning method.

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