TW202306703A - Method of shaping cutting blade capable of shaping the shape of the cutting blade easily and at low cost - Google Patents

Abstract

[Problem] To provide a shaping method of a cutting insert capable of shaping the shape of the cutting insert easily and at low cost. [Solution] A method for shaping a cutting blade, comprising the following steps: a shaping preparation step, which is set so that the front end of the rotating cutting blade 21 cuts into a predetermined amount 201 of the sharpening plate 200 held by the work clamp 10; and In the shaping step, after the shaping preparation step is implemented, the cutting insert 21 is raised while moving the cutting insert 21 in the axial direction of the main shaft, and the inclined surface 28 is formed on the single surface (surface 26) side of the front end of the cutting insert 21, The shaping preparation step and shaping step are repeated until the inclined surface 28 of the cutting insert 21 becomes a desired angle or width.

Description

Shaping method of cutting insert

The invention relates to a shaping method of a cutting blade.

A cutting device (dicing machine) is used to cut and divide various plate-shaped workpieces such as semiconductor device wafers, ceramic substrates, glass substrates, and resin package substrates into individual wafers with cutting blades. In normal dicing, although the substrate is fully cut and divided, in order to suppress chipping, form a V-groove, or form an inclined surface on the wafer, a cutting blade with a V-shaped tip may be used for dicing or grooving. (See, for example, Patent Documents 1, 2 and 3). prior art literature patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2004-039906 Patent Document 2: Japanese Patent Laid-Open No. 2012-044096 Patent Document 3: Japanese Patent Laid-Open No. 2019-160887

The problem to be solved by the invention

In this case, the front end of the insert tends to be broken in shape due to consumption, and the cost of the cutting insert becomes large if the cutting insert is replaced with a new one every time the shape breaks. Therefore, although a processing device for shaping the shape of the cutting insert has been conceived, it has to be re-introduced into equipment, and there is a problem that it cannot be easily implemented. Also, if you buy a trimmed blade with an angle attached to the front end from the blade manufacturer and install it on the spindle, the rotation center of the spindle will deviate from the center of the cutting blade, resulting in a slightly eccentric state. In addition, if dressing is performed to correct eccentricity, the shape of the cutting edge changes rapidly due to wear of the cutting insert, so there is still a problem that dressing cannot be performed, and thus eccentricity cannot be corrected.

The present invention was made in view of the aforementioned problems, and an object of the present invention is to provide a cutting insert shaping method capable of shaping the shape of the cutting insert easily and at low cost. means to solve problems

In order to solve the above-mentioned problems and achieve the purpose, the cutting insert shaping method of the present invention is a cutting insert shaping method that uses a cutting device to shape the cutting insert. The cutting device is equipped with a work chuck that holds a workpiece with a holding surface. ; The cutting unit is equipped with a circular cutting blade on the main shaft with an axis parallel to the holding surface to cut the workpiece that has been held on the work clamp table; and the moving unit makes the work clamp The table moves relative to the cutting unit, and the method for shaping the cutting blade has the following steps: The preparatory step for shaping is set so that the front end of the rotating cutting blade cuts into the sharpening plate held by the work clamp by a predetermined amount; and In the shaping step, after the shaping preparation step is performed, the cutting insert is raised while moving the cutting insert in the axial direction of the spindle to form an inclined surface on one side of the front end of the cutting insert, The shaping preparation step and the shaping step are repeated until the inclined surface of the cutting insert becomes a desired angle or width.

The shaping step may be performed in both the positive direction and the negative direction of the shaft center direction of the main shaft, and inclined surfaces may be formed at the front ends of both one side and the other side of the cutting insert.

It is also possible to further include a consumption measurement step, the aforementioned consumption measurement step is a step of measuring the consumption of the cutting insert after the shaping step is performed and before the shaping preparation step is performed again, even if the cutting insert has been consumed, The cutting insert still cuts into a predetermined amount during the shaping preparation step. Invention effect

The invention makes it possible to shape the cutting insert easily and at low cost.

form for carrying out the invention

The form (embodiment) for carrying out this invention is demonstrated in detail, referring drawings. The present invention is not limited by the contents described in the following embodiments. In addition, the constituent elements described below include constituent elements that can be easily assumed by those skilled in the art and substantially the same constituent elements. In addition, the configurations described below can be appropriately combined. In addition, various omissions, substitutions, or changes in the configuration can be made without departing from the gist of the present invention.

[implementation form] A method of shaping a cutting insert according to an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a perspective view showing a configuration example of a cutting device 1 according to a method of shaping a cutting insert according to an embodiment. FIG. 2 is an exploded perspective view showing the cutting unit 20 of the cutting device 1 in FIG. 1 . As shown in FIG. 1 , the cutting device 1 includes a work chuck 10 , a cutting unit 20 , a moving unit 30 , an imaging unit 40 and a control unit 50 .

In this embodiment, the cutting object 100 to be cut by the cutting device 1 is, for example, a disc-shaped semiconductor device wafer made of silicon, sapphire, silicon carbide (SiC), gallium arsenide, etc. as a base material. Or optical device wafers, etc. As shown in FIG. 1 , a device 103 is formed on a flat front surface 101 of a workpiece 100 defined by a plurality of planned division lines 102 formed in a lattice. In this embodiment, although the adhesive tape 105 is pasted on the back side 104 of the back side of the front side 101 of the workpiece 100, and the ring-shaped frame 106 is installed on the outer edge of the adhesive tape 105, this is not a limitation in the present invention. here. In addition, in the present invention, the workpiece 100 may be a rectangular package substrate, a ceramic plate, a glass plate, or the like having a plurality of devices sealed with resin.

The work chuck 10 includes a disk-shaped frame body formed with a concave portion, and a disk-shaped suction portion fitted in the concave portion. The suction portion of the chuck 10 is formed of porous ceramics or the like, and is connected to a vacuum suction source (not shown) through a vacuum suction path (not shown). The upper surface of the suction part of the work chuck 10 is a holding surface 11 on which a workpiece 100 can be placed and the placed workpiece 100 can be sucked and held. In this embodiment, the holding surface 11 allows the workpiece 100 to be placed with the front surface 101 facing upward, and the placed workpiece 100 is sucked and held from the back surface 104 side through the adhesive tape 105 . The holding surface 11 is arranged on the same plane as the upper surface of the frame of the chuck table 10, and is formed parallel to the XY plane which is a horizontal plane. The work clamp table 10 can move freely in one direction in the horizontal direction, that is, in the X-axis direction by the X-axis moving unit 31 of the moving unit 30, and is rotated around and in the vertical direction and opposite to each other by a rotary drive source not shown. The axis parallel to the Z-axis direction perpendicular to the holding surface 11 is rotatably provided.

As shown in FIG. 2 , the cutting unit 20 includes a main shaft 22 on which a cutting blade 21 is installed at the front end, and a mounting flange 24 . The cutting blade 21 is a cutting grindstone with an annular cutting edge 21-1, and the aforementioned cutting edge 21-1 uses a bonding material (bonding material) such as metal or resin to fix diamond or CBN (cubic boron nitride, Cubic Boron Nitride) and the like, and formed into a predetermined thickness. The cutting insert 21 generates a spontaneous edge so that the cutting edge 21 - 1 is worn away as the cutting progresses, and always maintains a sharpness higher than a certain level. In the example shown in FIG. 2, although the cutting insert 21 is a hubless insert, the present invention is not limited thereto, and may be one in which an annular cutting edge 21-1 is fixed on the outer periphery of an annular base. Hub type blade.

The main shaft 22 has an axis parallel to the Y-axis direction which is another horizontal direction and perpendicular to the X-axis direction, that is, an axis parallel to the holding surface 11 . The mounting flange 24 sandwiches and fixes the cutting insert 21 to the front end of the spindle 22 . The cutting blade 21 installed at the front end of the spindle 22 is rotated around the axis parallel to the Y-axis direction by the rotation of the spindle 22, and the workpiece held on the work holder 10 is rotated. 100 for cutting. As shown in FIG. 1 , the cutting unit 20 is set movably in the Y-axis direction by the Y-axis moving unit 32 of the moving unit 30 relative to the workpiece 100 held on the work holder 10, and by moving The Z-axis moving unit 33 of the unit 30 is provided movably in the Z-axis direction (lifting direction).

As shown in FIG. 1 , the moving unit 30 includes an X-axis moving unit 31 , a Y-axis moving unit 32 and a Z-axis moving unit 33 . The X-axis moving unit 31 moves the chuck table 10 relative to the cutting unit 20 in the X-axis direction (machining feed direction). The Y-axis moving unit 32 relatively moves the cutting unit 20 in the Y-axis direction (index feed direction) with respect to the chuck table 10 . The Z-axis moving unit 33 relatively moves the cutting unit 20 along the Z-axis direction (cutting feed direction) with respect to the chuck table 10 . In this way, the moving unit 30 relatively moves the work chuck 10 and the cutting unit 20 .

The X-axis moving unit 31, the Y-axis moving unit 32, and the Z-axis moving unit 33 are all equipped with a known ball screw, a known pulse motor and a known guide rail. The aforementioned ball screw is rotatably arranged around the axis. The pulse motor rotates the ball screw around the axis, and the guide rail supports the work chuck 10 or the cutting unit 20 so as to be movable in the X-axis direction, the Y-axis direction, or the Z-axis direction. In addition, the X-axis moving unit 31, the Y-axis moving unit 32, and the Z-axis moving unit 33 are equipped with known position detectors for detecting the positions of the work clamp table 10 or the cutting unit 20 in the X-axis direction, the Y-axis direction, or the Z-axis direction. , and output the position detected by the position detector to the control unit 50 .

The cutting device 1 uses the moving unit 30 to set the cutting blade 21 mounted on the front end of the main shaft 22 at a predetermined position relative to the workpiece 100 held on the work holder 10, and to make the cutting blade 21 moves relative to the workpiece 100 held on the chuck 10 along the planned dividing line 102 while rotating, whereby the workpiece 100 is cut along the planned dividing line 102 by the cutting blade 21 .

In this embodiment, the imaging unit 40 is attached to the cutting unit 20 and moves integrally with the cutting unit 20 . The imaging unit 40 includes an imaging element for imaging the workpiece 100 held on the work chuck 10 before and after machining. The imaging element may be, for example, a CCD (Charge-Coupled Device, Charge-Coupled Device) imaging element or a CMOS (Complementary Metal Oxide Semiconductor, Complementary MOS) imaging element. The photographing unit 40 photographs the workpiece 100 held on the work clamp 10 to obtain an image for calibration, and outputs the obtained image to the control unit 50, wherein the aforementioned calibration is performed on the workpiece 100 and the alignment of the cutting blade 21. The photographing unit 40 photographs the workpiece 100 held on the work clamp 10 to obtain an image for completing the tool mark inspection, and outputs the obtained image to the control unit 50, wherein the aforementioned tool mark inspection is The quality of the cut grooves formed on the workpiece 100 was confirmed.

The control unit 50 controls the operations of various components of the cutting device 1 so that the cutting device 1 performs the cutting process of the workpiece 100 and the processing of the shaping method of the cutting insert of the embodiment. In this embodiment, the control unit 50 includes a computer system. The computer system included in the control unit 50 has a computing processing device, a memory device, and an input-output interface device. Read memory, Read Only Memory) or RAM (Random Access Memory, Random Access Memory) memory. The calculation processing device of the control unit 50 will implement calculation processing according to the computer program stored in the memory device of the control unit 50, and output the control signal for controlling the cutting device 1 to the cutting device through the input and output interface device of the control unit 50 1 for each component.

Next, this specification will describe the operation of the processing of the cutting insert shaping method of the embodiment using drawings. Fig. 3 is a flowchart showing an example of the processing procedure of the cutting insert shaping method according to the embodiment. Fig. 4 is a sectional view illustrating a shaping method of the cutting insert according to the embodiment. 5 and 6 are perspective views illustrating the shaping preparation step 1001 in FIG. 3 . FIG. 7 is a cross-sectional view illustrating the shaping preparation step 1001 of FIG. 3 . 8 and 9 are cross-sectional views illustrating the shaping step 1002 in FIG. 3 . 10 and 11 are respectively a cross-sectional view and a side cross-sectional view illustrating an example of the slope determination step 1003 in FIG. 3 . FIG. 12 is a diagram illustrating an example of the consumption measurement step 1004 in FIG. 3 .

The shaping method of the cutting insert of the embodiment is an example of operation processing performed by the cutting device 1, and as shown in FIG. . The shaping method of the cutting insert of the embodiment is carried out on the cutting insert 21 before, for example, mounting the cutting insert 21 on the spindle 22 and cutting the workpiece 100 with the cutting insert 21 .

In this embodiment, the shaping method of the cutting insert is a method of shaping the cutting insert 21 from a rectangular cross-sectional shape along the radial direction to the following shape as shown in FIG. 4 : One side 26 of the front end (outer peripheral surface) forms an inclined surface 28 with a predetermined angle θ1 and a predetermined width W1 with respect to the radial direction, and forms an inclined surface 28 with a predetermined angle θ2 and a predetermined width W2 with respect to the radial direction on the other side 27 Surface 29, wherein the aforementioned cutting insert 21 is, for example, a vitrified bond insert (Synthetic Diamond, SD) with a particle size of #800, a concentration of 100, an outer diameter of 58mm, and a thickness of 0.2mm. Vitrified Bond Blade). Here, the widths W1 and W2 of the inclined surfaces 28 and 29 are lengths along the thickness direction of the cutting edge 21 - 1 in the inclined surfaces 28 and 29 as shown in FIG. 4 . Furthermore, in the present invention, the shaping method of the cutting blade is not limited thereto, and the cutting blade 21 may be formed on either side 26, 27 by shaping any abrasive grain, particle size, concentration, outer diameter and thickness. It is implemented in the case of the shape of the inclined surfaces 28 and 29 with desired angles θ1 and θ2.

Also, in this embodiment, the side 26 of the front end of the cutting edge 21-1 of the cutting insert 21 is the positive direction (-Y direction in FIG. The other surface 27 side of the front end of -1 is the negative direction (+Y direction in FIG. 4 ) side of the axial center direction of the main shaft 22 . In the present embodiment, the shaping method of the cutting insert is carried out individually for both the positive direction and the negative direction of the axial center direction of the main shaft 22 . That is to say, in this embodiment, the shaping step 1002 is individually implemented for both the positive direction and the negative direction of the axial direction of the main shaft 22, and the one side 26 and the other side of the cutting edge 21-1 of the cutting insert 21 The front ends of both sides of one side 27 form inclined surfaces 28 and 29 respectively, and the shaping preparatory step 1001 is performed before the shaping step 1002 according to these individual shaping steps 1002 .

Shaping preparation step 1001 is a step in which the cutting edge 21-1 of the rotating cutting blade 21 is cut into the sharpening plate 200 held by the work chuck 10 by a predetermined amount 201 (see FIG. 7 ). In the shaping preparation step 1001, first, in this embodiment, for example, as shown in FIG. Adhesive surface of the adhesive tape 105 on the side opening, and the sharpening board 200 is accommodated in the opening of the ring frame 106 on the adhesive tape 105 . In the shaping preparation step 1001, the exposed surface of the sharpening plate 200 and the opposite side face upward, and the adhesive tape 105 side faces the holding surface 11 of the work clamp table 10 to place the adhesive tape 105 accommodates the sharpening board 200 in the opening of the ring frame 106 , and uses the holding surface 11 of the work clamp 10 to attract and hold the sharpening board 200 through the adhesive tape 105 .

Here, the sharpening plate 200 used in the shaping method of the cutting blade is a plate-shaped plate in which abrasive grains are fixed with a bonding material and used for trimming (roundness correction or sharpening) of the cutting blade 21. , and the cutting edge 21-1 of the cutting blade 21 can be worn by cutting with the cutting blade 21, and the sharpening plate 200 itself will be removed by the cutting edge 21-1 of the cutting blade 21 to form cutting marks. Here, roundness cutting is a method of aligning the rotation center of the spindle 22 with the center of the outer edge of the cutting edge 21-1 of the cutting blade 21, and sharpening is the spontaneous process of making the abrasive grains protrude by consuming the cutting blade 21. The practice of restoring the sharpness of the blade. In this embodiment, the sharpening plate 200 is an example of matching the above-mentioned cutting blade 21. For example, the grinding stone is white alundum (White Alundum, WA), the particle size is #800, the concentration is 50, and the resin Adhesives are used to fix it into a plate-like structure. Furthermore, in the present invention, the sharpening plate 200 is not limited thereto, and any composition of grinding stones, particle sizes, concentrations, and binders can be used in conjunction with the cutting blades 21 .

In the shaping preparation step 1001, after the holding surface 11 of the work clamp table 10 attracts and holds the sharpening plate 200 through the adhesive tape 105, the control unit 50 will use the moving unit 30 to move the front end of the main shaft 22 The cutting blade 21 is aligned at a predetermined position relative to the sharpening plate 200 held on the work chuck 10 (for example, a position near the center of the sharpening plate 200 where no cutting marks are formed). In the shaping preparation step 1001, next, the control unit 50 rotates the aligned cutting blade 21 at a predetermined number of revolutions (in this embodiment, for example, 10000 rpm (rotations per minute)), while By means of the Z-axis moving unit 33, the cutting blade 21 is relatively moved towards the direction of approaching each other relative to the sharpening plate 200 along the cutting feed direction, and as shown in FIGS. 6 and 7 , the cutting edge 21 of the cutting blade 21 -1 Cut a predetermined amount 201 into the sharpening board 200 .

Here, in the case where the shaping step 1002 is performed in the positive direction of the axial direction of the main shaft 22, the predetermined amount 201 can be based on the diameter of the desired inclined surface 28 to be formed on the side 26 of the cutting edge 21-1 of the cutting insert 21. The length in the radial direction is appropriately determined, and the predetermined amount 201 is set larger as the length in the radial direction of the inclined surface 28 becomes larger. Also, in the case of implementing the shaping step 1002 in the negative direction of the axial direction of the main shaft 22, as in the positive direction, the predetermined amount 201 can be formed according to the desired shape on the other side 27 side of the cutting edge 21-1 of the cutting blade 21. The length in the radial direction of the inclined surface 29 is appropriately determined. In this embodiment, the predetermined amount 201 is set to, for example, 0.7 mm.

Shaping step 1002 is the following step: After implementing shaping preparation step 1001, the cutting blade 21 is raised while moving the cutting blade 21 toward the axis of the main shaft 22, and the front end of the cutting edge 21-1 of the cutting blade 21 The inclined surfaces 28 and 29 are formed on one side (any one of the surfaces 26 and 27 ). In the shaping step 1002, when the inclined surface 28 is formed on the side 26 of the front end of the cutting edge 21-1 of the cutting blade 21, the control unit 50 rotates the cutting blade 21 at a predetermined number of rotations ( In this embodiment, for example, 10,000 rpm) is rotated, and the cutting blade 21 is moved from the position positioned in the shaping preparation step 1001 to the direction of the side 26 side by the Y-axis moving unit 32 (the axial direction of the main shaft 22 The positive direction) moves, while rising by the Z-axis moving unit 33. That is to say, in the shaping step 1002, the control unit 50 presses the face 26 of the rotating cutting blade 21 against the sharpening plate 200 in the positive direction of the axis direction of the main shaft 22, and makes the cutting blade 21 rises towards the inclined direction. Thereby, in the shaping step 1002, as shown in FIG. The cutting edge 21 - 1 of the cutting blade 21 cuts off the sharpening plate 200 to form cutting marks 202 on the sharpening plate 200 .

Also, in the shaping step 1002, when the inclined surface 29 is formed on the other surface 27 side of the front end of the cutting edge 21-1 of the cutting insert 21, the control unit 50, as shown in FIG. The number of revolutions (for example, 10000 rpm in this embodiment) is rotated, and the cutting blade 21 is moved from the position positioned in the shaping preparation step 1001 to the direction of the other surface 27 side by the Y-axis moving unit 32 (spindle 22 in the negative direction of the axis direction) while moving up by the Z-axis moving unit 33. That is to say, in the shaping step 1002, the control unit 50 presses the face 27 of the rotating cutting blade 21 against the sharpening plate 200 toward the negative direction of the axis direction of the main shaft 22, and makes the cutting blade 21 21 rises towards the inclined direction. Thereby, in the shaping step 1002, as shown in FIG. 9, the inclined surface 29 is formed by grinding the other surface 27 side of the front end of the cutting edge 21-1 of the cutting blade 21 in the inclined direction by the sharpening plate 200, and The sharpening plate 200 is cut and removed by the cutting edge 21 - 1 of the cutting blade 21 , and a cutting trace 203 is formed on the sharpening plate 200 .

Here, the relationship between the moving speed of the cutting insert 21 in the axial direction of the main shaft 22 in the shaping step 1002 and the moving speed of the cutting insert 21 in the upward direction is based on the angles θ1 and θ2 of the desired inclined surfaces 28 and 29 to be formed. , and is appropriately determined in consideration of the rigidity of the cutting edge 21 - 1 of the cutting insert 21 . For example, the ratio of the moving speed in the axial direction to the moving speed in the ascending direction is determined based on the tangent of the angles θ1 and θ2. In this embodiment, for example, the angles θ1 and θ2 are both 45°, and the moving speed of the cutting insert 21 in the axial direction of the spindle 22 in the shaping step 1002 is set together with the moving speed of the cutting insert 21 in the upward direction. is 0.1mm/s.

In addition, in the shaping step 1002, the control unit 50 may raise the cutting blade 21 while moving the cutting blade 21 in the axial direction of the main shaft 22, and further use the X-axis moving unit 31 to hold the sharpening plate. The work chuck 10 of 200 relatively moves along the X-axis direction with respect to the cutting insert 21 . Thereby, in the shaping step 1002, the cutting edge 21-1 of the cutting insert 21 can be shaped while forming the inclined surfaces 28, 29 on either the surfaces 26, 27 of the front end of the cutting edge 21-1 of the cutting insert 21. The roundness is corrected. Here, the moving speed of the chuck table 10 relative to the cutting insert 21 is set to, for example, 0.3 mm/s in this embodiment.

The inclined surface judging step 1003 is a step of judging the inclination on either side of the cutting edge 21-1 of the cutting insert 21 formed in the immediately preceding shaping step 1002 after the implementation of the shaping step 1002. Whether the shape of the surfaces 28 and 29 is a desired shape. In the inclined surface determination step 1003, as shown in FIG. 10 in this embodiment, the cutting insert 21 after the shaping step 1002 is cut through the predetermined plate 300 held by the work chuck 10 in the X-axis direction. cutting process, and the plate 300 after cutting is carried out from the cutting device 1, and as shown in FIG. The inclined surfaces 302 and 303 of the groove 301 cut in the direction of the X-axis are used to determine whether the shapes of the inclined surfaces 28 and 29 have become the desired shape.

Here, the predetermined plate 300 used in the inclined surface determination step 1003 is a plate-shaped plate formed of a material whose hardness is much lower than that of the cutting edge 21-1 of the cutting blade 21, and can be cut without being cut. When the blade 21 cuts and wears the cutting edge 21 - 1 of the cutting blade 21 , the cutting edge 21 - 1 of the cutting blade 21 cuts away the plate 300 itself to form cutting marks. In this embodiment, the predetermined plate 300 is an example of the above-mentioned cutting insert 21, for example, a carbon plate or a silicon plate is used. In addition, the present invention is not limited thereto, and the predetermined plate 300 may be a plate of any material whose hardness is sufficiently lower than that of the cutting edge 21 - 1 of the cutting insert 21 in combination with the cutting insert 21 .

In the inclined surface determination step 1003, the determination of the shape of the inclined surfaces 28 and 29 is carried out by the operator of the cutting device 1 in this embodiment, but the present invention is not limited thereto, and may be performed by the operator. The observed measurement results of angles θ1 and θ2 and widths W1 and W2 of inclined surfaces 28 and 29 are input to the cutting device 1 from an input unit not shown, and the control unit 50 of the cutting device 1 that has received the input determines Whether or not the measurement results are desired angles θ1, θ2 and widths W1, W2. In this way, when the control unit 50 implements the inclined surface determination step 1003, as will be described later, the control unit 50 will continue to automatically implement the subsequent consumption measurement step 1004, the next shaping preparation step 1001 and Shaping step 1002 .

Furthermore, the slope determination step 1003 in the present invention is not limited to observing the slopes 302 and 303 of the groove 301 that has been formed on the plate 300 and cuts in the direction of the X-axis. 21. The inclined surfaces 28 and 29 are judged at the end of a groove formed by a so-called chopper cut in the same predetermined board 300 to a fixed depth. In addition, in the inclined surface judging step 1003, the front end of the cutting edge 21-1 of the cutting blade 21 after the immediately preceding shaping step 1002 may be observed from The inclined surfaces 28 and 29 can be determined by observing in the circumferential direction, and the inclined surfaces 28 and 29 can also be determined by observing the side of the groove 301 formed on the plate 300 from the side of the plate 300 .

As shown in FIG. 3 , in the method of shaping the cutting insert according to the embodiment, in the inclined surface judging step 1003, the shapes of the inclined surfaces 28 and 29 on the sides determined to be shaped in the immediately preceding shaping step 1002 become desired shapes. In the case of (YES in the inclined surface determination step 1003 of FIG. 3 ), the series of processes for forming the inclined surfaces 28 and 29 on the side of the surfaces 26 and 27 determined to match are terminated. On the other hand, as shown in FIG. 3, in the method of shaping the cutting insert according to the embodiment, in the inclined surface judging step 1003, the shapes of the inclined surfaces 28 and 29 on the sides that have been shaped in the immediately preceding shaping step 1002 are judged to be If it is not in the desired shape ("No" in the inclined surface judging step 1003 in FIG. A series of processes for forming the inclined surfaces 28 and 29 on the sides of the surfaces 26 and 27 are repeated (shaping preparation step 1001 and shaping step 1002 ). In this way, the shaping method of the cutting insert in the embodiment will repeat the shaping preparation step 1001 and the shaping step 1002 for each surface 26, 27 of the front end of the cutting edge 21-1 of the cutting insert 21 until the inclined surfaces 28, 29 become desired. shape (angle θ1, θ2 and width W1, W2).

The consumption measurement step 1004 is a step of measuring the consumption of the cutting edge 21 - 1 of the cutting insert 21 after the shaping step 1002 is performed and before the shaping preparation step 1001 is performed again. In this embodiment, the consumption measurement step 1004 is performed when the shaping preparation step 1001 and the shaping step 1002 are to be performed again based on the result of the slope determination step 1003 performed after the shaping step 1002 .

In the present embodiment, the consumption measurement step 1004 is implemented using the cutting insert detection unit 60 provided below the cutting unit 20 in the cutting device 1 shown in FIG. 12 . As shown in FIG. 12 , the cutting blade detecting unit 60 has a groove member 61, a light emitting unit 62, a light receiving unit 63, a light source 64, a photoelectric conversion unit 65, a reference voltage setting unit 66, a voltage comparing unit 67, and an end position detecting unit 68. , the calculation unit 69 and the position correction unit 70 .

The groove member 61 is formed with a groove 61-1 along the X-axis direction into which the cutting edge 21-1 of the cutting blade 21 can enter, and is arranged on both sides of the groove 61-1 facing each other with a groove along the Y axis. The light emitting part 62 and the light receiving part 63 of the optical axis in the axial direction. The light emitting unit 62 is optically connected to the light source 64 through an optical fiber or the like, and emits light from the light source 64 toward the light receiving unit 63 . The light receiving unit 63 is optically connected to the light receiving element by an optical fiber or the like, and the light emitted from the light emitting unit 62 and reaching the light receiving unit 63 is detected by the light receiving element. The light receiving unit 63 is optically connected to the photoelectric conversion unit 65 through an optical fiber or the like, and transmits the light received from the light emitting unit 62 to the photoelectric conversion unit 65 .

The photoelectric conversion unit 65 outputs a voltage corresponding to the light quantity of the light transmitted from the light receiving unit 63 to the voltage comparison unit 67 . When the front end of the cutting edge 21-1 of the cutting blade 21 invades the groove 61-1, and the cutting edge 21-1 of the cutting blade 21 shields the amount between the light-emitting portion 62 and the light-receiving portion 63 increases, the self-photoelectric conversion The output voltage output from section 65 will gradually decrease. In this embodiment, the photoelectric conversion unit 65 outputs a voltage of 5V (maximum voltage) when the ratio of the received light amount of the light receiving unit 63 to the light emitted by the light emitting unit 62, that is, the light receiving rate is 100%. When the rate is 0%, it will output a voltage of 0V (minimum voltage). The photoelectric conversion part 65 is set so that when the light receiving amount of the light receiving part 63 reaches a predetermined light amount, that is, when the front end of the cutting edge 21-1 of the cutting blade 21 has reached a predetermined position between the light emitting part 62 and the light receiving part 63 , the output voltage becomes a predetermined reference voltage (3V in this embodiment). The reference voltage setting unit 66 outputs the set predetermined reference voltage to the voltage comparing unit 67 . As described above, the predetermined reference voltage is 3V in this embodiment.

The voltage comparator 67 compares the output from the photoelectric conversion unit 65 with the reference voltage set by the reference voltage setting unit 66, and when the output from the photoelectric conversion unit 65 reaches the reference voltage, outputs a signal indicating that to the terminal. Part position detection part 68. The edge position detection unit 68 outputs the position in the Z-axis direction of the tip of the cutting edge 21 - 1 of the cutting insert 21 at the time point output from the voltage comparison unit 67 to the calculation unit 69 . Calculation unit 69 outputs the difference between the Z-axis direction reference position of the tip of cutting edge 21 - 1 of cutting insert 21 stored in advance and the position output from end position detection unit 68 to position correction unit 70 . The position correcting unit 70 corrects the Z-axis position of the tip of the cutting edge 21 - 1 of the cutting insert 21 in accordance with the value output from the calculating unit 69 .

Furthermore, in this embodiment, each function of the photoelectric conversion unit 65, the reference voltage setting unit 66, the voltage comparison unit 67, the calculation unit 69, and the position correction unit 70 is executed by the arithmetic processing device of the control unit 50 and has been stored in The computer program of the memory device of the control unit 50 is implemented in the control unit 50 .

In the consumption amount measuring step 1004 , the calculation unit 69 acquires the position in the Z-axis direction of the tip of the cutting edge 21 - 1 of the cutting insert 21 through the end position detection unit 68 . In the consumption measurement step 1004, the calculation unit 69 then calculates the position in the Z-axis direction of the front end of the cutting edge 21-1 of the cutting insert 21 obtained after the implementation of the immediately preceding shaping step 1002, and The difference in the Z-axis direction position of the front end of the cutting edge 21-1 of the cutting insert 21 obtained immediately before the implementation of the shaping step 1002, and the calculated difference is detected as the result of the implementation of the immediately before implementation. The radial consumption (abrasion) of the tip of the cutting edge 21 - 1 of the cutting insert 21 during the preparatory step 1001 and the shaping step 1002 is shaped, and the detected consumption is output to the control unit 50 .

Furthermore, in the present invention, in the consumption amount measuring step 1004, it is not limited to the form of using the cutting blade detection unit 60, and the cutting blade 21 formed on the predetermined board 300 may also be used by chopper cutting. The length of the groove is used to measure the consumption of the cutting edge 21-1 of the cutting insert 21.

In the shaping method of the cutting insert of the embodiment, in the shaping preparation step 1001 after the second time, the consumption amount of the cutting edge 21-1 of the cutting insert 21 acquired in the immediately preceding consumption amount measuring step 1004 How much weight is there, the control unit 50 will make the cutting blade 21 move relative to the direction of approaching each other along the cutting feeding direction along the cutting feed direction, and use the cutting edge 21-1 of the cutting blade 21 to cut into the sharpening plate 200. Blade 200. Thereby, in the shaping preparation step 1001 after the second time, even if the cutting edge 21-1 of the cutting insert 21 is consumed in the shaping preparation step 1001 and the shaping step 1002 immediately before, the consumption can still be taken into account. , and let the cutting edge 21 - 1 of the cutting blade 21 cut into the sharpening plate 200 corresponding to the predetermined amount 201 .

The shaping method of the cutting insert of the embodiment is to carry out the shaping process of forming the desired inclined surfaces 28, 29 on both sides 26, 27 of the cutting edge 21-1 of the cutting insert 21 shown in Fig. 4 by the following method: For the front end side 26 side of the cutting edge 21-1 of the cutting insert 21 (the positive direction of the axis direction of the main shaft 22), a series of processes of the shaping method of the cutting insert shown in FIG. 3 are implemented as described above to form a desired shape. After the inclined surface 28 of the cutting blade 21, in addition to this series of processing, further for the other surface 27 side of the front end of the cutting edge 21-1 of the cutting insert 21 (the negative direction of the axial center direction of the main shaft 22), as described above, FIG. 3 is implemented. A series of processes of the shown shaping method of the cutting insert to form the desired inclined surface 29 .

The shaping method of the cutting insert of the embodiment having the above-mentioned constitution is to cut the cutting insert 21 into the sharpening plate 200 which is usually used and tilt it Ascent can easily form inclined surfaces 28, 29 at the front end of cutting blade 21, so it can be used without introducing new equipment or components, and the function of cutting blade 21 can be easily and at low cost. The effect of shaping the oblique shape.

Also, conventionally, when a trimmed cutting insert with a slope formed at the front end is purchased from a manufacturer, when mounted on a main shaft, the center position of the outer edge of the cutting edge of the cutting insert is slightly different from the rotation center of the main shaft. However, the shaping method of the cutting insert in the embodiment is to shape the shape of the cutting insert 21 after it has been installed on the main shaft 22, so it is also possible to adjust the shape of the cutting insert 21 in a state without eccentricity. The effect of plastic surgery. In addition, the shaping method of the cutting insert of the embodiment also exerts the following effect: Even if the shape of the cutting insert 21 is broken, the shape of the cutting insert 21 can be easily reshaped again in a relaxed manner.

[modified example] The shaping method of the cutting insert according to Modifications 1 and 2 of the present invention will be described with reference to the drawings. 13 and 14 are cross-sectional views each illustrating a shaping method of a cutting insert according to Modifications 1 and 2. In FIGS. 13 and 14 , the same reference numerals are attached to the same parts as those in the embodiment, and description thereof will be omitted.

As shown in Fig. 4 and Fig. 13, the shaping method of the cutting insert according to Modification 1 is a structure in which the shape of the cutting insert 21 before shaping is different in the shaping method of the cutting insert of the embodiment, and the other structures are the same as those of the embodiment. same. In Modification 1, although the cutting insert 21 before shaping has the configuration in which the inclined surfaces 28, 29 are respectively formed on the front end surfaces 26, 27 of the cutting edge 21-1, the shape of the cutting insert 21 has been changed due to the cutting of the workpiece 100. The structure of collapse due to processing etc. The shaping method of the cutting insert of modification 1 can shape the cutting insert 21 of this shape before shaping to have the desired inclined surfaces 28 and 29 in exactly the same way as the shaping method of the cutting insert of the embodiment. shape.

As shown in Fig. 4 and Fig. 14, the shaping method of the cutting insert according to Modification 2 is a structure in which the shapes of the cutting insert 21 before and after shaping are different in the shaping method of the cutting insert in the embodiment, and the other structures are as follows: It is the same as the embodiment. In Modification 2, although the cutting insert 21 before shaping is not formed with the inclined surface 29 on the front end surface 27 of the cutting edge 21-1, but is formed on the front end surface 26 of the cutting edge 21-1 to be aligned with the cutting edge 21. The thickness of -1 is equivalent to the configuration of the inclined surface 28 having a larger width W1 than that of the embodiment, but its shape is a configuration that has been collapsed due to the cutting process of the workpiece 100 or the like. Also, in Modification 2, the shaped cutting insert 21 has the following configuration: the inclined surface 29 is not formed on the front end surface 27 of the cutting edge 21-1, but the inclined surface 29 is formed on the front end surface 26 of the cutting edge 21-1. The desired inclined surface 28 having a larger width W1 than in the embodiment. The shaping method of the cutting insert of modification 2 can be carried out only on the front end surface 26 side of the cutting edge 21-1 of the cutting insert 21 in the same way as the cutting insert shaping method of the embodiment, and this shape can be adjusted. The cutting insert 21 before shaping is shaped into a shape having a desired inclined surface 28 .

In addition, this invention is not limited to the said embodiment. That is, various modifications and implementations are possible without departing from the gist of the present invention.

1: Cutting device 10: Work clamp table 11: keep the surface 20: Cutting unit 21: Cutting blade 21-1: cutting edge 22: Spindle 24: Mounting flange 26,27: face 28, 29, 302, 303: Inclined surfaces 30: mobile unit 31: X-axis mobile unit 32: Y-axis mobile unit 33: Z-axis mobile unit 40: Shooting unit 50: Control unit 60: Cutting blade detection unit 61: Groove member 61-1: ditch 62: Luminous department 63: Light receiving unit 64: light source 65: Photoelectric conversion department 66: Reference voltage setting part 67: Voltage comparison unit 68: End position detection unit 69: Department of Computing 70:Position correction part 100: processed object 101: Front 102: Split schedule line 103: Device 104: back 105: Adhesive tape 106: ring frame 200: sharpening board 201: scheduled amount 202,203: cutting marks 300: board 301: ditch 1001: Plastic preparation steps 1002: Shaping step 1003: Inclined surface determination step 1004: consumption measurement step W1, W2: width X, Y, Z: direction θ1, θ2: angle

Fig. 1 is a perspective view showing a configuration example of a cutting device according to a method of shaping a cutting insert according to an embodiment. FIG. 2 is an exploded perspective view showing a cutting unit of the cutting device of FIG. 1 . Fig. 3 is a flow chart showing an example of the processing procedure of the processing apparatus according to the first embodiment. Fig. 4 is a sectional view illustrating a shaping method of the cutting insert according to the embodiment. FIG. 5 is a perspective view illustrating a preparatory step for shaping in FIG. 3 . FIG. 6 is a perspective view illustrating a preparatory step for shaping in FIG. 3 . Fig. 7 is a cross-sectional view illustrating the preparatory steps for shaping in Fig. 3 . Fig. 8 is a cross-sectional view illustrating a shaping step in Fig. 3 . Fig. 9 is a cross-sectional view illustrating a shaping step in Fig. 3 . FIG. 10 is a cross-sectional view illustrating an example of the step of judging an inclined surface in FIG. 3 . Fig. 11 is a side sectional view illustrating an example of the step of judging an inclined surface in Fig. 3 . Fig. 12 is a diagram illustrating an example of the consumption measuring procedure in Fig. 3 . Fig. 13 is a cross-sectional view illustrating a method of shaping a cutting insert according to Modification 1. Fig. 14 is a cross-sectional view illustrating a method of shaping a cutting insert according to Modification 2.

10: Work clamp table

11: keep the surface

21: Cutting blade

21-1: cutting edge

24: Mounting flange

26,27: face

28: Inclined surface

105: Adhesive tape

200: sharpening board

201: scheduled amount

202: cutting marks

X, Y, Z: direction

Claims (3)

A cutting blade shaping method is a cutting blade shaping method using a cutting device to shape the cutting blade. The cutting device includes: a work clamp table for holding a workpiece on a holding surface; a cutting unit for cutting a circular cutting blade The insert is installed on the main shaft with an axis parallel to the holding surface to cut the workpiece held on the work holder; and the moving unit moves the work holder and the cutting unit relatively, the aforementioned The shaping method of the cutting blade has the following steps: The preparatory step for shaping is set so that the front end of the rotating cutting blade cuts into the sharpening plate held by the work clamp by a predetermined amount; and In the shaping step, after the shaping preparation step is performed, the cutting insert is raised while moving the cutting insert in the axial direction of the spindle to form an inclined surface on one side of the front end of the cutting insert, The shaping preparation step and the shaping step are repeated until the inclined surface of the cutting insert becomes a desired angle or width. The method for shaping a cutting insert according to claim 1, wherein the shaping step is performed in both the positive direction and the negative direction of the axial direction of the main shaft, and inclined surfaces are formed on the front ends of both one side and the other side of the cutting insert. The method for shaping a cutting blade according to claim 1 or 2, which has a consumption measuring step, and the aforementioned consumption measuring step is to measure the consumption of the cutting blade after the shaping step is performed and before the shaping preparation step is performed again. step, even if the cutting insert is consumed, the cutting insert is cut into a predetermined amount in the shaping preparation step.

Images