JP2008036806A - Grooving device and grooving position correcting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correct the position of the cutting edge of a grinding wheel without performing grooving for correcting the position on a work to be machined. <P>SOLUTION: In this grooving device 1, grooving is performed on the surface of the work to be machined R at a prescribed machining position in the rotating axis direction of the grinding wheel 26 by the rotating disk-like grinding wheel 26. The device is provided with a grinding means 4 rotating the grinding wheel 26, an attachment means attaching the work R, a storing means storing machining position data relative to the machining position, a work moving means relatively moving the work R in the rotating axis direction relative to the grinding wheel 26, a dummy work 13 in which a groove for correcting the machining position is ground by the grinding wheel 26, a grinding position measuring means 15 measuring the grinding position in the rotating axis direction of the correction groove formed in the dummy work 13 using a prescribed first reference position as a reference, and a correcting means correcting the stored machining position data based on the measuring result of the grinding position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a grooving apparatus that performs grooving on the surface of a workpiece with a rotating disk-shaped grinding wheel and a method for correcting the machining position.

Conventionally, as this type of grooving device, a grinding means (spindle) for rotating a grinding wheel, a mounting means (table) for mounting a workpiece (workpiece), and a grinding wheel for the mounted workpiece A mechanism that moves in the direction of the rotation axis and a movement mechanism that moves the workpiece in a direction perpendicular to the direction of the rotation axis via the mounting means, and performs grooving at any position on the surface of the workpiece. Is known (see Patent Document 1).
Japanese Patent Laid-Open No. 10-76465

  However, if the cross-sectional shape of the cutting edge portion (outer peripheral portion) of the grinding wheel is not accurately formed, the cutting edge of the grinding wheel is displaced from a predetermined position (design standard) in the rotation axis direction. In this case, the actual machining position with respect to the workpiece is displaced from the predetermined machining position, which is a problem. For this problem, after grinding the position correction groove on the workpiece, measuring the grinding position in the direction of the rotation axis, correcting the machining position data related to the predetermined machining position based on the measurement result, and thereafter It is conceivable to perform grooving (main machining) on the workpiece. However, in this case, an extra correction groove (abandonment groove) is formed for the workpiece.

  It is an object of the present invention to provide a grooving apparatus and a machining position correction method thereof that can correct the position of the cutting edge of a grinding wheel without performing position correction grooving on a workpiece.

  The grooving apparatus of the present invention is a grooving grindstone that performs grooving at a predetermined processing position in the rotation axis direction of the grinding wheel with a rotating disc-shaped grinding wheel on the surface of a workpiece. A grinding means for rotating the workpiece, a mounting means for mounting the workpiece, a storage means for storing machining position data related to the machining position, and the grinding wheel based on the machining position data. The object moving means for relative movement, the dummy workpiece on which the machining position correction groove is ground by the grinding wheel, and the grinding position in the rotation axis direction of the correction groove formed on the dummy workpiece are set to a predetermined first reference. A grinding position measuring means for measuring the position as a reference, and a correcting means for correcting the stored machining position data based on the measurement result of the grinding position are provided.

  The processing position correction method of the grooving apparatus of the present invention is based on processing position data related to a predetermined processing position in the rotation axis direction of the grinding wheel by a rotating disc-shaped grinding wheel with respect to the surface of the workpiece. In the processing position correction method of the groove processing apparatus that performs grooving at the processing position, a step of grinding the processing position correction groove with respect to the dummy workpiece with a grinding wheel, and the correction groove formed on the dummy workpiece The method includes a step of measuring a grinding position in the rotation axis direction with a predetermined reference position as a reference, and a step of correcting machining position data based on a measurement result of the grinding position.

  According to these configurations, by correcting the machining position data based on the measurement result of the grinding position of the correction groove ground on the dummy workpiece, the cutting edge of the grinding wheel is positioned from a predetermined position in the rotation axis direction. This can be corrected even when there is a deviation. Therefore, it is possible to accurately perform grooving on a processing object at a predetermined processing position. In addition, in this case, it is not necessary to grind the correction groove on the workpiece by forming the correction groove on the dummy workpiece.

  In the groove processing apparatus, the grinding wheel grinds the correction groove on one surface of the dummy workpiece having a rectangular parallelepiped shape, and the grinding position measuring means performs grinding based on the image recognition result of the end face shape of the correction groove. It is preferable to obtain the position.

  According to this configuration, the grinding position can be accurately and easily acquired by recognizing the correction groove as an image. Moreover, in the image recognition, by recognizing the end face shape of the correction groove, unlike the case where the groove formed on the peripheral surface is image-recognized, there is no problem of focusing or halation.

  In this case, the dummy workpiece is arranged in a positioning state so that the longitudinal direction is parallel to the rotation axis direction, and further includes a workpiece moving means for moving the dummy workpiece relative to the grinding wheel in the rotation axis direction. It is preferable.

  According to this configuration, the correction grooves can be ground at a plurality of positions in the rotation axis direction with respect to one surface of the dummy workpiece by changing the position of the grinding wheel in the rotation axis direction with respect to the dummy workpiece by the moving means. Therefore, the dummy work can be used effectively. In addition, in this case, the dummy workpiece is disposed in a positioning state in which the longitudinal direction thereof is parallel to the rotation axis direction, so that the correction workpieces formed in a plurality of places are arranged in the rotation axis direction of each end face between the correction grooves. The position in the orthogonal direction does not change, and there is no need for focusing in image recognition.

  In this case, further comprising a first reference member having a first reference surface orthogonal to the rotation axis direction, the grinding position measuring means acquires the first reference position based on the image recognition result of the first reference surface, The dummy workpiece is preferably positioned by bringing one end face into contact with the first reference plane.

  According to this configuration, the first reference position can be acquired accurately and easily by recognizing the first reference plane. Further, the first reference member can be positioned using the first reference surface. Therefore, the number of parts can be reduced and a simple configuration can be achieved.

  In this case, the object to be processed has a cylindrical shape, and the mounting jig is placed in a state where the cylindrical shaft is parallel to the rotational axis direction so as to continuously groove the outer peripheral surface in the circumferential direction. The mounting jig is mounted on the mounting means via the shaft, the shaft portion rotatably supported by the mounting means at both ends, and the annular surface projecting from the peripheral surface of the shaft portion, and on the inner peripheral surface of the workpiece An object projecting means for rotating the object to be processed around the cylindrical axis, and a position of the joint receiving surface of the joint receiving part in the rotational axis direction. And a joining position measuring means for measuring a predetermined second reference position as a reference, and the correcting means obtains processing position data based on the measurement result of the position of the joint receiving surface in addition to the measurement result of the grinding position. It is preferable to correct.

  According to this configuration, by correcting the processing position data based on the measurement result of the position of the joint receiving surface in addition to the measurement result of the grinding position, the position of the joint receiving surface is changed from the predetermined position in the rotation axis direction. This can be corrected even when the position is shifted. Therefore, it is possible to accurately perform grooving at a predetermined processing position on the processing object attached to the mounting jig.

  In this case, the object moving means includes a mounting table and a processing table on which a second reference member having a second reference surface orthogonal to the rotation axis direction is mounted, and the mounting means and the second reference member are connected to the rotation axis via the processing table. A table drive unit that moves in the direction of rotation, and a table position acquisition unit that acquires the movement position of the machining table in the direction of the rotation axis, on the movement locus of the mounting means and the second reference member at a fixed position in the direction of the rotation axis A joint receiving surface of the mounting jig supported by the mounting means in a state before mounting the workpiece and a contact member that respectively contacts the second reference surface of the second reference member; The measuring means moves the machining table and moves the machining table to the second reference when the machining table is moved and the abutting member is brought into contact with the joint receiving surface. In when brought into contact with the contact member, and a moving position acquired by the table position obtaining unit, based on, it is preferable to measure the position of the joint receiving surface.

According to this configuration, the position of the joint receiving surface in the rotation axis direction can be accurately and easily acquired using the table position acquisition means.
In the case where the grinding position measuring unit is configured to acquire the first reference position based on the image recognition result of the first reference surface of the first reference member, the first reference surface of the first reference member is the second reference surface. It is also preferable to serve as the second reference surface of the reference member. According to this, the grinding position and the position of the joint receiving surface are respectively acquired on the basis of the common reference surface (first reference surface). For this reason, the relative position shift in the rotation axis direction of the first reference surface and the second reference surface does not become a problem, and the grinding position and the position of the joint receiving surface can be obtained accurately.

  In this case, it is preferable that the contact member is composed of a dial gauge probe attached on the movement locus of the mounting means and the second reference member.

  According to this configuration, the position of the joint receiving surface is determined based on the indication value on the dial gauge even when the probe is displaced from the fixed position and contacts the joint receiving surface or the second reference surface in the rotation axis direction. This measurement result can be corrected accurately and easily.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The grooving apparatus according to the present embodiment performs grooving on the peripheral surface of a processing target roller formed of a highly wear-resistant material (for example, ceramic) to produce a wire saw guide roller. That is, a plurality (for example, several hundreds) of wire grooves for wrapping the cutting wire around the peripheral surface of the processing target roller is ground in parallel with an equal pitch (for example, several hundreds μm).

  As shown in FIGS. 1 to 4, the grooving device 1 is installed on the front side of the machine base 2 and the machine base 2, and moves the mounted processing target roller R and the like in the X-axis direction and the Y-axis direction. An XY table 3 is installed on the back side of the machine base 2, and a grinding unit 4 for rotating the grinding wheel 26 to grind the peripheral surface of the roller R to be machined. And a control panel 5 for performing the operation.

  The XY table 3 includes, in order from the left side of FIG. 1, a truing unit 11 that performs truing of the grinding wheel 26, a mounting unit 12 that rotates the mounted processing target roller R, and a dummy workpiece that stands upright perpendicular to the grinding wheel 26. 13 and a positioning block 14 which is disposed on the back side of the dummy work 13 and positions the dummy work 13 is mounted. An image recognition unit 15 for recognizing an image of the dummy work 13 (a groove formed in the dummy work 13) is provided on the left side of the XY table. Furthermore, a dial gauge 16 is attached to the grinding unit 4 so as to be aligned with the grinding wheel 26 in the Y-axis direction.

  The grinding unit 4 includes a column 21 erected on the machine base 2, a lifting mechanism 22 provided on the front surface of the column 21, and a columnar shape extending from the lifting block 31 (described later) of the lifting mechanism 22 to the front side. Casing 23, a support shaft 24 that protrudes forward from the casing 23 and rotatably supports the grinding wheel 26, and a rotary drive unit 25 that is built in the casing 23 and rotates the grinding wheel 26 via the support shaft 24. And have.

  The elevating mechanism 22 includes an elevating block 31 that supports the casing 23, an elevating drive unit 32 that elevates the elevating block 31, and a pair of left and right guide rails 33 that protrude from the front surface of the column 21 and guide the movement of the elevating block 31. And a block position acquisition unit 34 that acquires a movement position of the lifting block 31 in the Z-axis direction. The lifting mechanism 22 raises and lowers the grinding stone 26 every time one wire groove Ra is formed in the processing target roller R based on control by the control panel 5. Further, the grinding wheel 26 is lowered to the vicinity of the processing target roller R at a high speed, and the cutting amount is finely adjusted by lowering the grinding wheel 26 from the vicinity of the processing target roller R at a low speed.

  The grinding wheel 26 is composed of, for example, a diamond wheel obtained by solidifying diamond abrasive grains with metal bonds, and is formed into a disk shape. The grinding wheel 26 is configured to be detachable with respect to the support shaft 24 and is supported by the support shaft 24 so that the rotation axis direction is parallel to the X-axis direction.

  The cutting edge portion 26a located at the outer peripheral edge of the grinding wheel 26 has a mountain-shaped cross section, and the cutting edge 26b of the cutting edge portion 26a is positioned at the center of the grinding wheel 26 in the thickness direction (rotational axis direction). ing. For this reason, the wire groove | channel Ra formed in the surface of the process target roller R becomes a V-shaped groove | channel. However, this cross-sectional shape may not be accurately formed due to processing variations or the like, and the cutting edge 26b may be displaced from the center in the thickness direction (for example, about 50 μm at the maximum). In this case, the cutting edge 26b of the grinding wheel 26 supported by the support shaft 24 is displaced from a predetermined position in the X-axis direction (rotational axis direction). Therefore, the groove processing apparatus 1 performs a processing position correction process, which will be described later, in order to correct this positional deviation.

  The XY table 3 extends in the Y-axis direction, and includes a machining table 41 on which the truing unit 11, the mounting unit 12, the mounting unit 12, the dummy work 13, and the positioning block 14 are distributed and mounted in the Y-axis direction, and the machine base 2 The table drive unit 42 is installed on the processing table 41 and moves the mounting unit 12 and the like collectively in the X-axis direction and the Y-axis direction via the processing table 41, and a linear encoder. A table position acquisition unit 43 that acquires the movement position of the processing table 41 is provided.

  By moving the processing table 41 in the Y-axis direction by the XY table 3, the grinding wheel 26 faces the truing unit 11, the mounting unit 12, and the dummy workpiece 13, respectively. That is, the grinding wheel 26 faces the movement trajectory of the truing unit 11, the mounting unit 12, and the dummy workpiece 13. Similarly, the dial gauge 16 faces the mounting unit 12 and the positioning block 14 by moving the processing table 41 in the Y-axis direction. That is, the dial gauge 16 faces the movement trajectory of the mounting unit 12 and the positioning block 14.

  Further, by moving the processing table 41 in the X-axis direction by the XY table 3, the mounted processing target roller R, the dummy work 13 and the like can be collectively moved in the X-axis direction with respect to the grinding wheel 26. That is, the XY table 3 functions as an object moving means and a work moving means in the claims. Of course, the processing target roller R and the dummy workpiece 13 may be individually moved in the X-axis direction with respect to the grinding wheel 26. Further, the grinding wheel 26 may be configured to move in the X-axis direction.

  The mounting unit 12 includes a mounting portion 46 that mounts the processing target roller R via the mounting jig 45, and a target rotating mechanism 47 that rotates the mounted processing target roller R via a kelay (not shown). I have.

  The processing target roller R has a cylindrical shape as a whole, and an annular joint Rb projects from the inner peripheral surface at a substantially intermediate portion in the axial direction. On the other hand, the mounting jig 45 includes a shaft portion 51 and a joint receiving portion 52 that protrudes in an annular shape on the peripheral surface of the shaft portion 51 at a substantially intermediate portion in the axial direction. Conical mounting recesses 53 are respectively formed on both end surfaces of the shaft portion 51 so that the mounting portion 46 can be mounted.

  Then, the shaft portion 51 of the mounting jig 45 is inserted into the processing target roller R from one end, and the joining portion Rb of the processing target roller R and the joint receiving portion 52 of the mounting jig 45 are joined. That is, the joint portion Rb and the joint receiving portion 52 are fixed with bolts at a plurality of locations in the circumferential direction.

  The mounting portion 46 has a spire shape, and is fixed to the pair of shaft support portions (the fixed shaft support portion 55 and the movable shaft support portion 56) that engage with the mounting recesses 53 at the distal end portion, and the processing table 41, and And a support frame (not shown) for supporting the shaft support. The fixed shaft support portion 55 and the movable shaft support portion 56 are arranged in the X-axis direction, the fixed shaft support portion 55 is fixed to the support frame, and the movable shaft support portion 56 is movable in the X-axis direction with respect to the support frame. It has become. Further, the movable shaft support 56 is biased in the X-axis direction toward the fixed shaft support 55 by a biasing member (not shown). The mounting jig 45 is rotatably supported by the pair of shaft support portions.

  Here, the shape of each mounting recess 53 of the mounting jig 45 is not constant due to processing variations and wear due to use (rotation). For this reason, the attachment jig 45 may be mounted in a state where the joint surface Rc is displaced from a predetermined position in the X-axis direction. In this case, the processing target roller R attached to the attachment jig 45 is also displaced from a predetermined position in the X-axis direction. Therefore, the groove machining apparatus 1 performs a machining position correction process, which will be described later, in order to correct this positional deviation.

  The dummy workpiece 13 is a grinding target of a machining position correcting groove (correcting groove 13a). The dummy work 13 is made of, for example, carbon and has a rectangular parallelepiped shape. The dummy workpiece 13 is fixed by a vise (not shown) in a state where the dummy workpiece 13 is positioned by a positioning block 14 described later so that the longitudinal direction is parallel to the X-axis direction.

  The grinding wheel 26 grinds the correction groove 13 a similar to the wire groove Ra on the upper surface 13 b of the dummy workpiece 13. That is, the grinding wheel 26 moves relative to the dummy workpiece 13 in the Y-axis direction while cutting into the upper surface 13b, thereby forming a correction groove 13a that crosses the upper surface 13b of the dummy workpiece 13 in the Y-axis direction.

  Then, by changing the position of the dummy workpiece 13 in the X-axis direction with respect to the grinding wheel 26 by the XY table 3, the correction grooves 13a can be ground at a plurality of locations in the X-axis direction with respect to the upper surface 13b of the dummy workpiece 13. . For this reason, the dummy work 13 can be used effectively.

  The positioning block 14 is formed in a rectangular parallelepiped shape and has a reference surface 14a orthogonal to the X-axis direction. That is, the positioning block 14 is fixed on the processing table 41 so that the reference surface 14a is orthogonal to the X-axis direction. By bringing the back surface 13c of the dummy work 13 into contact with the reference surface 14a, the dummy work 13 is positioned so that the longitudinal direction is parallel to the X-axis direction. Although the details will be described later, the reference surface 14a serves as a reference for obtaining the first reference position by the image recognition unit 15, and the second reference position is obtained by bringing the probe 66 of the dial gauge 16 into contact therewith. It is also a standard for acquiring.

  The image recognition unit 15 recognizes an image of the correction groove 13a formed in the dummy workpiece 13, and acquires the grinding position of the correction groove 13a in the X-axis direction. The image recognition unit 15 is provided so as to face the dummy workpiece 13, and a CCD camera 61 that images the correction groove 13 a, a camera stand 62 that supports the CCD camera 61 on the machine base 2, and performs image processing on the imaging result. And an image processing unit 63. The CCD camera 61 is installed at the same position as the grinding wheel 26 in the Y-axis direction, and images a grinding position by the grinding wheel 26.

  The image recognition unit 15 moves the dummy workpiece 13 in the Y-axis direction to the imaging position (focal position) of the CCD camera 6 using the XY table 3, and then uses the CCD camera 61 to end the end surface of the correction groove 13 a to be imaged ( The right side surface 13d) of the dummy work 13 is imaged. Then, the image processing unit 63 recognizes an image of the end face shape of the correction groove 13a. Thereby, unlike the case where the image of the groove formed on the peripheral surface is recognized, the problem of focusing and halation does not occur. The image recognition unit 15 can also acquire the position of the reference surface 14a in the X-axis direction by capturing and recognizing the reference surface 14a of the positioning block 14.

  Further, as described above, the dummy work 13 is disposed in a positioning state in which the longitudinal direction is parallel to the X-axis direction, so that each end face is between the correction grooves 13a formed at a plurality of locations. The position in the Y-axis direction (the optical axis direction of the CCD camera 61) does not change, and there is no need for focusing in image recognition.

  The dial gauge 16 is attached to the front surface of the column 21 via a magnet stand 65. The dial gauge 16 includes a measuring element 66 that is brought into contact with an object to be measured, and a gauge main body 67 that holds the measuring element 66 so as to be able to advance and retreat, and has a pointer that indicates a measured value. The measuring element 66 faces the movement trajectory of the mounting unit 12 and the positioning block 14 at a fixed position in the X-axis direction.

  The control panel 5 includes an operation unit 71 for inputting and setting various data, input contents input by the operation unit 71, a movement position (X, Y) of the machining table 41 acquired by the table position acquisition unit 43, A display unit 72 that displays the movement position (Z) and the like of the elevating block 31 acquired by the block position acquisition unit 34, a storage unit 73 that stores various data and control programs, and various data are processed (corrected) according to the control program. And a control unit 74 that performs overall control of the entire apparatus.

  The control panel 5 controls the operation of grooving. Specifically, machining position data related to a predetermined machining position in the X-axis direction is input / set to the outer peripheral surface of the machining target roller R by the operation unit 71, and the machining position data is stored in the storage unit 73. . Then, the processing position data is corrected by the control unit 74 based on a processing position correction process described later. Based on the corrected processing position data, the XY table 3 is controlled, the processing target roller R is moved with respect to the grinding wheel 26, and grooving is performed.

  In the grooving apparatus 1 configured as described above, a series of grooving operations for forming a plurality of wire grooves Ra on the processing target roller R will be described. Groove machining by the grooving apparatus 1 performs machining position correction processing, grinding processing, and truing processing.

  First, machining position data input in advance is corrected by machining position correction processing. Thus, the positional deviation of the cutting edge 26b of the grinding wheel 26 from the predetermined position in the X-axis direction and the positional deviation of the bonding receiving surface 52a from the predetermined position in the X-axis direction are corrected (details will be described later).

  Subsequently, a grinding process is performed. First, the processing target roller R is moved in the Y-axis direction by the XY table 3 so that the processing target roller R faces directly below the grinding wheel 26, and based on the processing position data, the processing target roller R is moved in the X-axis direction. The grinding wheel 26 grinds a predetermined processing position. Next, while rotating the processing object roller R by the object rotation mechanism 47, the grinding unit 4 is lowered while rotating the grinding wheel 26, and cut into the outer peripheral surface of the processing object roller R. Thereby, the outer peripheral surface of the processing object roller R is continuously ground in the circumferential direction, and one wire groove Ra is formed.

  Thereafter, the grinding wheel 26 is raised away from the outer peripheral surface of the processing target roller R. Further, the processing target roller R is moved by the groove pitch in the X-axis direction by the XY table 3 based on the processing position data. Then, the grinding wheel 26 is again cut into the processing target roller R. By repeating the above operation for the number of wire grooves Ra, a plurality of wire grooves Ra are formed at a predetermined processing position at an equal pitch on the outer peripheral surface of the processing target roller R. Of course, it is also possible to form a plurality of wire grooves Ra instead of an equal pitch.

  Further, in this grinding process, the truing process is performed by the truing unit 11 at a stage where a predetermined number of wire grooves Ra are ground (for example, every 100). Thereby, since the shape of the worn grinding wheel 26 is shaped, the wire groove Ra having a desired shape can always be formed at an accurate position. If the cutting edge portion 26a of the grinding wheel 26 is not formed uniformly, the shaping shape on the data and the actual shaping shape may be slightly different in the truing process. Therefore, after truing, the dummy workpiece 13 is ground to form a verification groove, and whether or not the cutting edge 26a is shaped into a desired cross-sectional shape based on the image recognition result of the verification groove. Is preferably verified.

  Here, the machining position correction processing in the grooving apparatus 1 will be described in detail with reference to FIG. First, as a preparation, the attachment jig 45 in a state where the processing target roller R is not attached is attached to the attachment portion 46.

  Subsequently, the position in the X-axis direction of the joint receiving surface 52a of the mounting jig 45 is measured with reference to the reference surface 14a (second reference surface) of the positioning block 14 (second reference member). That is, the machining table 41 is moved in the Y-axis direction by the XY table 3 so that the dial gauge 16 faces the positioning block 14, and the machining table 41 is further moved in the X-axis direction so that the reference surface of the positioning block 14 is A measuring piece 66 of the dial gauge 16 is brought into contact with 14a. And the movement position (x1) in the X-axis direction of the process table 41 at this time is acquired. Similarly, the processing table 41 is moved in the Y-axis direction by the XY table 3 so that the dial gauge 16 faces the mounting jig 45, and further, the processing table 41 is moved in the X-axis direction, and the mounting jig 45 is moved. The contact 66 of the dial gauge 16 is brought into contact with the joint receiving surface 52a. And the movement position (x2) in the X-axis direction of the process table 41 at this time is acquired. Based on the both movement positions thus obtained, the position (x2-x1) of the joint receiving surface 52a in the X-axis direction with respect to the reference surface 14a is calculated.

  Further, at this time, the measured value of the dial gauge 16 when it is brought into contact with the reference surface 14a of the positioning block 14, and the measured value of the dial gauge 16 when brought into contact with the joint receiving surface 52a of the mounting jig 45 Based on the above, the measurement result of the position of the joint receiving surface 52a is corrected. According to this, even when the probe 66 is displaced from the fixed position in the X-axis direction and comes into contact with the joint receiving surface 52a or the second reference surface 14a, the measurement result can be corrected accurately and easily. it can.

  Next, the grinding position in the X-axis direction of the correction groove 13a formed in the dummy workpiece 13 is measured with reference to the reference surface 14a (first reference surface) of the positioning block 14 (first reference member). That is, first, the image recognition unit 15 recognizes an image of the reference surface 14a of the positioning block 14, and acquires the position (x1) of the reference surface 14a in the X-axis direction. Further, the correction groove 13 a is ground on the dummy workpiece 13 by the grinding wheel 26. The image of the correction groove 13a is recognized by the image recognition unit 15, and the position (x3) of the correction groove 13a in the X-axis direction is acquired. Based on the acquired position of the reference surface 14a and the position of the correction groove 13a, the position (x3-x1) of the correction groove 13a in the X-axis direction with respect to the reference surface 14a is calculated.

  Finally, the machining position data is corrected based on the measurement results of the position of the joint receiving surface 52a and the position of the correction groove 13a in the X-axis direction with reference to the reference surface 14a. By correcting the machining position data based on the measurement result of the position of the joint receiving surface 52a in the X-axis direction with respect to the reference surface 14a, the position of the joint receiving surface 52a is displaced from a predetermined position in the X-axis direction. This can be corrected even if it is. Further, by correcting the machining position data based on the measurement result of the position of the correction groove 13a in the X-axis direction with reference to the reference surface 14a, the cutting edge 26b of the grinding wheel 26 is moved from a predetermined position in the X-axis direction. This can be corrected even when the position is shifted. Therefore, the groove processing can be accurately performed at a predetermined processing position on the processing target roller R.

  As described above, the shape of each mounting recess 53 of the mounting jig 45 may change due to wear due to use (rotation) in addition to processing variations. For this reason, it is preferable to change the correction amount stepwise in the groove processing for forming the plurality of wire grooves Ra. That is, for the attachment jig 45 before grooving, the position (x2-x1) of the joint receiving surface 52a in the X-axis direction with respect to the reference surface 14a is obtained, and attachment of the plurality of wire grooves Ra after grooving For the jig 45, the position (x2'-x1) of the joint receiving surface 52a in the X-axis direction with respect to the reference surface 14a is obtained. Based on the measurement results obtained before and after the groove processing, the processing position data is corrected step by step.

  As described above, according to the grooving device 1 of the present embodiment, the position of the cutting edge 26b of the grinding wheel 26 in the X-axis direction can be corrected without performing position correction grooving on the processing target roller R. it can.

It is an external appearance perspective view of a groove processing apparatus. It is a figure which shows the process object roller with which the mounting part was mounted | worn via the attachment jig. It is a figure which shows a dummy workpiece and a positioning block. It is a block diagram of a groove processing apparatus. It is a figure explaining the process position correction process in a groove processing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Groove processing apparatus 3 ... XY table 4 ... Grinding unit 5 ... Control panel 12 ... Mounting unit 13 ... Dummy work 13a ... Correction groove 13b ... Upper surface (dummy work) 13c ... Back surface (dummy work) 14 ... Positioning block 15 ... Image recognition unit 16 ... Dial gauge 41 ... Processing table 42 ... Table drive unit 43 ... Table position acquisition unit 45 ... Mounting jig 46 ... Mounting unit 47 ... Object rotating mechanism 52 ... Joint receiving part 52a ... Joint receiving surface 66 ... Measurement Child 73 ... Storage unit 74 ... Control unit

Claims (8)

In the groove processing apparatus that performs groove processing at a predetermined processing position in the rotation axis direction of the grinding wheel with a rotating disc-shaped grinding wheel on the surface of the workpiece,
Grinding means for rotating the grinding wheel;
A mounting means for mounting the workpiece;
Storage means for storing machining position data relating to the machining position;
An object moving means for relatively moving the object to be processed in the direction of the rotation axis with respect to the grinding wheel based on the processing position data;
A dummy workpiece in which a groove for processing position correction is ground by the grinding wheel;
A grinding position measuring means for measuring a grinding position in the direction of the rotation axis of the correction groove formed in the dummy workpiece with reference to a predetermined first reference position;
Correction means for correcting the stored processing position data based on the measurement result of the grinding position;
A groove processing apparatus comprising: The grinding wheel grinds the correction groove on one surface of the dummy workpiece having a rectangular parallelepiped shape,
The groove processing apparatus according to claim 1, wherein the grinding position measuring unit acquires the grinding position based on an image recognition result of an end face shape of the correction groove. The dummy work is arranged in a positioning state so that the longitudinal direction is parallel to the rotation axis direction,
The grooving apparatus according to claim 2, further comprising a workpiece moving means for moving the dummy workpiece relative to the grinding wheel in the direction of the rotation axis. A first reference member having a first reference surface orthogonal to the rotation axis direction;
The grinding position measuring means acquires the first reference position based on the image recognition result of the first reference surface,
The groove processing apparatus according to claim 3, wherein the dummy workpiece is positioned by bringing one end face into contact with the first reference plane. The object to be processed has a cylindrical shape, and a mounting jig is attached in a state in which the cylindrical axis is parallel to the rotation axis direction so that grooves are continuously formed in the circumferential direction on the outer peripheral surface. Mounted on the mounting means via,
The mounting jig has a shaft portion that is rotatably supported by the mounting means at both ends, a ring projecting on the peripheral surface of the shaft portion, and a ring projecting on the inner peripheral surface of the workpiece. A joint receiving part for joining the joint part,
Object rotating means for rotating the object to be processed around the cylindrical axis;
A bonding position measuring means for measuring the position of the bonding receiving surface of the bonding receiving portion in the rotation axis direction with reference to a predetermined second reference position;
The correction means corrects the machining position data based on the measurement result of the position of the joint receiving surface in addition to the measurement result of the grinding position. Grooving equipment. The object moving means includes a mounting table and a processing table on which a second reference member having a second reference surface orthogonal to the rotation axis direction is mounted, and the mounting means and the second reference member via the processing table. A table drive unit that moves the table in the direction of the rotation axis, and a table position acquisition unit that acquires a movement position of the processing table in the direction of the rotation axis,
A joint receiving surface of the mounting jig that faces the movement trajectory of the mounting means and the second reference member at a fixed position in the rotation axis direction and is supported by the mounting means in a state before mounting the workpiece. A contact member that contacts each of the second reference surfaces of the second reference member,
The joining position measuring means moves the working table acquired by the table position obtaining means and the working table when the working table is moved and the contact member is brought into contact with the joint receiving surface. The position of the joint receiving surface is measured based on the movement position acquired by the table position acquisition means when the contact member is brought into contact with the second reference surface. The groove processing apparatus according to claim 5.   7. The grooving apparatus according to claim 6, wherein the contact member is constituted by a dial gauge probe attached on a movement locus of the mounting means and the second reference member. A grooving apparatus that performs grooving at a processing position based on processing position data related to a predetermined processing position in a rotation axis direction of the grinding wheel by a rotating disk-shaped grinding wheel on the surface of the processing object. In the machining position correction method,
Grinding the machining position correction groove with respect to the dummy workpiece by the grinding wheel;
Measuring a grinding position of the correction groove formed in the dummy workpiece in the direction of the rotation axis with reference to a predetermined reference position;
Correcting the machining position data based on the measurement result of the grinding position;
A machining position correction method for a grooving apparatus, comprising:

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