JP7338924B1 - Manufacturing method of diamond dresser - Google Patents

Abstract

[Problem] The object is to realize a diamond dresser that is low cost and has excellent wear resistance. SOLUTION: A diamond dresser 11 for forming a grinding wheel, comprising a square prism single crystal diamond 1a and a base metal 7 to which the square prism single crystal diamond 1a is attached, the square prism single crystal diamond 1a has a cut surface 2 cut along a side surface direction where at least one of the apexes in the approximate crystal orientation intersects the top surface 10, and an end of the cut surface 2 contacts the grinding wheel W. The diamond dresser 11 is characterized in that it is attached to the base metal 7 so as to serve as the working part 5. [Selection diagram] Figure 1

Description

The present invention relates to a diamond dresser for shaping a grinding wheel.

It has been a long-standing issue to improve the abrasion resistance of artificial diamonds in diamond dressers that form grinding wheels.

Patent Document 1 describes an example in which uneven wear is less likely to occur by using a columnar polycrystalline diamond synthesized by a vapor phase synthesis method.

Patent Document 1: JP-A-2001-341073

However, even in the case of Patent Document 1, there is a problem that it cannot be said that sufficient wear resistance is ensured.

An object of the present invention is to solve the above problems and to realize a diamond dresser having excellent wear resistance.

In order to solve the above problems, the present invention provides a method for manufacturing a diamond dresser for forming a grinding wheel, comprising:
Of the four apexes of a square prismatic single crystal diamond having a square top surface and a bottom surface, any one of the four apexes substantially in the crystal orientation is straight from the top surface to the bottom surface along the longitudinal direction of the square prism. a step of cutting to form a cut surface ;
a step of mounting the diamond dresser on the base metal so that the end of the cut surface serves as a working portion in contact with the grinding wheel.

With this configuration, it is possible to realize a diamond dresser that is low in cost and has a long service life by using a square columnar single crystal diamond, and that has excellent wear resistance by having a cut surface at the top of a substantially crystal orientation. This is because the use of quadrangular prismatic single-crystal diamond simplifies the polishing process during the manufacturing process, is low in cost, and has a longer life than polycrystalline diamond. In addition, by providing a cut surface at the top of the crystal orientation and two ends of the cut surface as acting portions acting on the grinding wheel, the abrasion resistance as a diamond dresser is improved.

The diamond dresser manufacturing method may include , before the step of attaching to the base metal, a step of forming an inclined surface extending from the top surface to the side surface of the quadrangular prism in a direction substantially orthogonal to the cut surface. good.

With this configuration, the angle of the slope can be selected according to the shape of the grinding wheel.

The diamond dresser manufacturing method may include, before the step of attaching to the base metal, a step of forming a taper in a direction from the top surface of the quadrangular prism toward the cut surface.

With this configuration, it is possible to prevent chipping of the single-crystal diamond and improve abrasion resistance.

In the method for manufacturing a diamond dresser , in the step of attaching to the base metal, a plurality of single-crystal diamonds having the cut surfaces are attached so that the ends of the cut surfaces serve as working portions in contact with the grinding wheel. may be configured.

With this configuration, it is possible to separate the quadrangular prismatic single-crystal diamond that is in contact with the circumferential surface and the side surface of the grinding wheel, so that the total cost can be reduced.

The diamond dresser of the present invention can realize a diamond dresser with excellent wear resistance.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the square-column single-crystal diamond in Example 1 of this invention. It is a figure explaining the diamond dresser in Example 1 of this invention. It is a figure explaining the diamond dresser in Example 2 of this invention. It is a figure explaining the diamond dresser in Example 3 of this invention. It is a figure explaining the diamond dresser in Example 4 of this invention. It is a front view explaining the usage example of the diamond dresser in Example 1 of this invention. It is a side view explaining an example of use of a diamond dresser in Example 1 of the present invention. It is a photograph of a diamond dresser in the present invention.

A diamond dresser in Example 1 of the present invention will be described with reference to FIGS. 1-2 and 6-8. FIG. 1 is a diagram for explaining a quadrangular prismatic single crystal diamond in Example 1 of the present invention. FIG. 2 is a diagram for explaining the diamond dresser in Example 1 of the present invention. FIG. 6 is a front view explaining an example of use of the diamond dresser in Example 1 of the present invention. FIG. 7 is a side view explaining an example of use of the diamond dresser in Example 1 of the present invention. FIG. 8 is a photograph of the diamond dresser in the present invention, the diamond dresser in Example 1 on the right side and the diamond dresser in Example 2 described later on the left side.

One diamond is used for the diamond dresser 11 in Example 1, and a single crystal diamond 1 having a rectangular parallelepiped shape having a square cross section and being long in the lateral direction is used. Then, the two apexes in the crystal orientation 4 are cut along the side direction intersecting the top surface 10 to form the cut surface 2, and the side surface from the top surface 10 in the direction substantially orthogonal to the cut surface 2 It has slopes 3 in the direction.

That is, FIG. 1(a) shows a rectangular parallelepiped single-crystal diamond 1 having a square cross section, and has a crystal orientation 4 in the diagonal direction on the top surface 10 . The diamond in the diamond dresser 11 is obtained by cutting the rectangular parallelepiped single crystal diamond 1 as a material along the side direction intersecting the top surface 10 at the two tops in the crystal orientation 4 with a laser as shown in (b). A cut surface 2 is formed. Further, as shown in (c), a slope 3 is formed from the top surface 10 toward the lateral direction in a direction substantially perpendicular to the cut surface 2, that is, in the direction of the crystal orientation 4. As shown in FIG. The one shown in (d) is attached to a base metal 7, which will be described later, to form a quadrangular prismatic single-crystal diamond 1a having two cut surfaces 2 and slopes 3 in the first embodiment. Even when attached to the base metal 7, the ends (four places in the first embodiment) where the cutting surface 2 and the top surface 10 intersect are exposed and serve as working portions 5 that come into contact when the grinding wheel is formed.
In addition, the cut surface 2 may be formed by cutting along the side direction intersecting the top surface 10 the two top portions in which the crystal orientation 4 is slightly deviated from the top portion and substantially aligned with the crystal orientation.

In this way, by forming the cut surface 2 at the top of the substantially crystal orientation 4 and using two ends of the cut surface 2 as acting portions, wear resistance is improved compared to the case where one top portion is used as the acting portion. can.

In Example 1, the rectangular parallelepiped single crystal diamond 1 having a square cross-section was used as the square prism single crystal diamond 1a, but it is not necessarily limited to this and can be changed as appropriate. For example, the cross section may not be square, and may be rectangular or rhombic. Moreover, it may be a cube instead of a rectangular parallelepiped, and at least a quadrangular prism may be used. Thus, by using the quadrangular prismatic single-crystal diamond, it is possible to achieve a longer life than in the case of using polycrystalline diamond.

In addition, in Example 1, the two apexes in the crystal orientation 4 were cut with a laser along the side surface direction intersecting the top surface 10 to form the cut surface 2, but it is not necessarily limited to this. can be changed as appropriate. For example, the cut surface 2 may be formed by cutting one top portion in the crystal orientation 4 with a laser along the side surface direction intersecting the top surface 10 . Also, instead of cutting with a laser, the cut surface 2 may be formed by polishing or the like. Furthermore, even if the crystal orientation 4 is slightly deviated from the top portion, the cut surface 2 may be formed by cutting the top portion substantially in the crystal orientation. In other words, at least one of the apexes in substantially the crystal orientation should have a cut surface 2 cut along the side surface direction intersecting the top surface 10 .

A base metal 7 is made of iron, and a square columnar single-crystal diamond 1a having two cut surfaces 2 and slopes 3 is attached to the base metal 7 with a sintered body (not shown) sandwiched therebetween. The upper portion of the base metal 7 is tapered into a rectangular shape, and the square prismatic single crystal diamond 1a is attached with the cut surface 2 perpendicular to the longitudinal direction of the rectangular shape as shown in FIG. 2(c). Therefore, the action portion 5 can easily come into contact with the grinding wheel W.

Further, in the first embodiment, the slope 3 is formed in the side direction from the top surface 10, but it is not necessarily limited to this and can be changed as appropriate. For example, the slope 3 may not be provided, and the angle of the slope 3 may be selected within the range of 20 to 80° according to the shape of the grinding wheel.

(Example of use)
6 and 7 show an example of use of the diamond dresser 11 in Example 1. FIG. The diamond dresser 11 forms the circumferential surface W1, the side surface W2, and the side surface W3 of the grinding wheel W. As shown in FIG. One action point 5 of the quadrangular prismatic single crystal diamond 1a is brought into contact with the circumferential surface W1 of the rotating grinding wheel W, and is moved in the Z direction shown in FIG. do.

When the forming of the circumferential surface W1 is completed, as shown in FIG. 7, the side surface W2 is formed while moving in the X direction from the position (a) and moving in the Y direction at the position shown in (b). At this time, the side surface W2 can be molded in contact with another working point 5 of the quadrangular prismatic single crystal diamond 1a.

When the shaping of the side surface W2 is finished, although not shown, the quadrangular prism-shaped single crystal diamond 1a is moved to the position of the side surface W3 by the moving part 21, and the side surface W3 is shaped. Thereby, all of the circumferential surface W1, the side surface W2, and the side surface W3 of the grinding wheel W can be formed.

(comparison test)
A comparison test between a conventional product (using single crystal diamond) and the product of the present invention was performed under the following conditions to obtain results.
・Conditional depth of cut 0.015 mm/pass depth of cut 2 passes Grinding wheel feed rate 300 mm/min
Peripheral speed of grinding wheel 45m/sec
Grinding fluid Water-soluble oil Grinding wheel specifications Mitsui Grinding wheel CSA wheel CSA60J
Diameter φ455mm Thickness 75mm

・Results (wear resistance)
Claimed invention 1st time 2,810 times
2nd time 2,640 times
3rd time 2,720 times Conventional product 1st time 930 times
2nd time 840 times
3rd time 940 times

Although improvement of the wear resistance of diamond dressers has been a major issue in the past, we were able to achieve great results as described above. In other words, the product of the present invention can be used about three times as many times as the conventional product, and it was possible to demonstrate an improvement in wear resistance compared to the conventional product.
It is also known that the surface roughness of the grinding wheel according to the present invention after molding was improved from Rz 1.6 of the conventional product to Rz 1.2.

Thus, in Example 1, the diamond dresser for molding the grinding wheel,
A quadrangular prismatic single crystal diamond,
a base metal for mounting the square prismatic single crystal diamond,
The quadrangular prismatic single crystal diamond has a cut surface cut along a side direction in which at least one of the apexes in a substantially crystal orientation intersects the top surface, and the end of the cut surface is the grinding wheel. The diamond dresser is attached to the base metal so as to be in contact with the base metal, and is low cost and long life by using a square columnar single crystal diamond, and cuts to the top of approximately crystal orientation. A diamond dresser with excellent wear resistance can be realized by having the surface.

A diamond dresser 12 in Example 2 of the present invention differs from Example 1 in that it has two square prismatic single crystal diamonds 1b. The diamond dresser 12 in Example 2 will be described with reference to FIG. FIG. 3 is a diagram illustrating a diamond dresser in Example 2 of the present invention.

The quadrangular prismatic single-crystal diamond 1b of the diamond dresser 12 in Example 2 is a rectangular parallelepiped single-crystal diamond 1 having a square cross section and being long in the lateral direction. Then, one top portion in the crystal orientation 4 is cut along the side surface direction that is the longitudinal direction intersecting the top surface to form the cut surface 2, and the top surface is cut in the direction substantially orthogonal to the cut surface 2. has a slope 3 from Two single-crystal diamonds 1b are attached to expose a top surface 10 and a part of the cut surface 2 so that the cut surface 2 faces the outside of the base metal 8 in the longitudinal direction of the rectangular shape. That is, there is no cut surface of the single-crystal diamond 1b in the direction facing inward in the longitudinal direction of the upper portion of the base metal 8 . Thereby, the cost of cutting the single crystal diamond 1 can be saved.

The base metal 8 is made of iron, and two square prismatic single crystal diamonds 1b each having a cut surface 2 and an inclined surface 3 are attached to the base metal 8 with a sintered body (not shown) sandwiched therebetween. Since the amount of expensive diamond used can be reduced by sandwiching the sintered body in the portion other than the working portion in contact with the grinding wheel, further cost reduction can be achieved.

By forming the cut surface 2 at the top of the crystal orientation 4 and using two ends of the cut surface 2 as the acting portions 5, the wear resistance can be improved more than when the top portion is the acting portion.

In Example 2, the single-crystal diamond 1b having a square prism shape is a rectangular parallelepiped single-crystal diamond 1 having a square cross section. For example, the cross section may not be square, and may be rectangular or rhombic. In addition, it may be a cube instead of a rectangular parallelepiped, as long as it is a quadrangular prism. Thus, by using single-crystal diamond, a longer life can be achieved than when polycrystalline diamond is used.

In addition, in Example 2, the cut surface 2 was formed by cutting the top portion at one location in the crystal orientation 4 along the side surface direction, which is the longitudinal direction intersecting the top surface, to form the cut surface 2. However, this is not necessarily the case. can be changed as appropriate. For example, the cut surface 2 may be formed by cutting the tops of two diagonal corners in a substantially crystal orientation that is slightly deviated from the crystal orientation 4 along the side surface direction that is the longitudinal direction intersecting the top surface. .

In the diamond dresser 12 of Example 2, the two square prismatic single crystal diamonds 1b have working portions 5 at two locations on the outside of the base metal 8, and the grinding wheel W is formed by the working portions 5 at a total of four locations. do.

In addition, in Example 2, the inclined plane 3 is provided in the direction substantially orthogonal to the cut surface 2 from the top surface, but the invention is not necessarily limited to this and can be changed as appropriate. For example, the slope 3 may not be provided, and the angle of the slope 3 may be selected within the range of 20 to 80° according to the shape of the grinding wheel.

In addition, in Example 2, although the configuration was such that two square prismatic single crystal diamonds were used, the configuration is not necessarily limited to this and can be changed as appropriate. For example, a configuration using a plurality of quadrangular prismatic single-crystal diamonds of three stones or more may be used.

Thus, in Example 2 as well, the diamond dresser for shaping the grinding wheel,
A quadrangular prismatic single crystal diamond,
a base metal for mounting the square prismatic single crystal diamond,
The quadrangular prismatic single crystal diamond has a cut surface cut along a side direction in which at least one of the apexes in a substantially crystal orientation intersects the top surface, and the end of the cut surface is the grinding wheel. The diamond dresser is attached to the base metal so as to be in contact with the base metal, and is low cost and long life by using a square columnar single crystal diamond, and cuts to the top of approximately crystal orientation. A diamond dresser with excellent wear resistance can be realized by having the surface.

The diamond dresser 13 in Example 3 of the present invention is composed of a single square prismatic single crystal diamond 1c, and this square prismatic single crystal diamond 1c is tapered in the direction of the cut surface 2 from the top surface of the square prismatic single crystal diamond. 9 is different from Examples 1 and 2. A diamond dresser 13 of Example 3 will be described with reference to FIG. FIG. 4 is a diagram for explaining a diamond dresser in Example 3 of the present invention.

One diamond is used for the diamond dresser 13 in Example 3, and a rectangular parallelepiped single crystal diamond 1c having a square cross section and being long in the lateral direction is used. Then, the two apexes in the crystal orientation 4 are cut along the side direction that is the longitudinal direction intersecting the top surface 10 to form the cut surface 2, and the top surface is substantially orthogonal to the cut surface 2. It has a slope 3 in the direction.

Further, as a feature of Example 3, there is a taper 9 in the direction from the top surface 10 of the quadrangular prismatic single crystal diamond to the cut surface 2 . This can prevent chipping of the single-crystal diamond and improve wear resistance.

In Example 3, the two apexes in the crystal orientation 4 were cut along the side surface direction, which is the longitudinal direction intersecting the top surface, to form the cut surface 2, but the cut surface 2 is not necessarily limited to this. It can be changed as appropriate. For example, the cut surface 2 may be formed by cutting two top portions in a substantially crystal orientation that is slightly deviated from the top portion of the crystal orientation 4 along the side surface direction that is the longitudinal direction intersecting the top surface.

The base metal 7 is made of iron in the same manner as in the first embodiment, and a square columnar single-crystal diamond 1c having two cut surfaces 2, slopes 3, and two tapers 9 is placed on top of a sintered body (not shown). It is attached to the base metal 7 so that the surface, the slope 3 and the taper 9 are exposed. The upper portion of the base metal 7 is tapered into a rectangular shape, and the square prismatic single crystal diamond 1c is attached with the cut surface 2 perpendicular to the longitudinal direction of the rectangular shape as shown in FIG. 4(c). Therefore, the working portion 5 is provided in the longitudinal direction of the rectangular shape, so that the working portion 5 can come into contact with the grinding wheel W efficiently.

In addition, in Example 3, the inclined surface 3 is provided in the direction substantially perpendicular to the cut surface 2 from the top surface, but the present invention is not necessarily limited to this and can be changed as appropriate. For example, the slope 3 may not be provided, and the angle of the slope 3 may be selected within the range of 20 to 80° according to the shape of the grinding wheel.

Thus, also in Example 3, the diamond dresser for shaping the grinding wheel is
A quadrangular prismatic single crystal diamond,
a base metal for mounting the square prismatic single crystal diamond,
The quadrangular prismatic single crystal diamond has a cut surface cut along a side direction in which at least one of the apexes in a substantially crystal orientation intersects the top surface, and the end of the cut surface is the grinding wheel. The diamond dresser is attached to the base metal so as to be in contact with the base metal, and is low cost and long life by using a square columnar single crystal diamond, and cuts to the top of approximately crystal orientation. A diamond dresser with excellent wear resistance can be realized by having the surface.

The diamond dresser 14 in Example 4 of the present invention is composed of two square prismatic single crystal diamonds 1d. It is different from Example 1-3 in that it has a taper 9 at the end. The diamond dresser 14 in Example 4 will be described with reference to FIG. FIG. 5 is a diagram illustrating a diamond dresser in Example 4 of the present invention.

The quadrangular prismatic single crystal diamond 1d of the diamond dresser 14 in Example 4 is a rectangular parallelepiped single crystal diamond 1 having a square cross section and being elongated in the lateral direction. Then, one top portion in the crystal orientation 4 is cut along the side surface direction that is the longitudinal direction intersecting the top surface 10 to form the cut surface 2, and the top surface is substantially perpendicular to the cut surface 2. It has a slope 3 in the direction.

Further, as a feature of Example 4, there is one taper 9 in the direction from the top surface 10 to the cut surface 2 of the quadrangular prismatic single crystal diamond 1d. This can prevent chipping of the single-crystal diamond 1d and improve abrasion resistance.

In addition, in Example 4, one taper 9 is provided in the direction from the top surface 10 to the cut surface 2, but the present invention is not necessarily limited to this and can be changed as appropriate. For example, the cut surface 2 may be formed by cutting two top portions in a substantially crystal orientation that is slightly deviated from the top portion of the crystal orientation 4 along the side surface direction that is the longitudinal direction intersecting the top surface.

Two single-crystal diamonds 1d are attached to expose the top surface 10, the slope 3, and the taper 9 so that the cut surface 2 faces outward in the longitudinal direction of the upper portion of the base metal 8 in the rectangular shape. In other words, there is no cut surface of the single crystal diamond 1d in the direction facing inward in the longitudinal direction of the rectangular upper portion of the base metal 8 . Thereby, the cost of cutting the single crystal diamond 1 can be saved.

Thus, by forming the cut surface 2 at the top of the substantially crystal orientation 4 and using the two ends of the cut surface 2 as the acting portions 5, the wear resistance is improved compared to the case where the top portion is the acting portion. can be improved.

In Example 4, the single-crystal diamond 1b having a rectangular prism shape was used as the single-crystal diamond 1 having a rectangular parallelepiped shape with a square cross section. For example, the cross section may not be square, and may be rectangular or rhombic. In addition, it may be a cube instead of a rectangular parallelepiped, as long as it is a quadrangular prism. Thus, by using single-crystal diamond, a longer life can be achieved than when polycrystalline diamond is used.

In addition, in Example 4, the cut surface 2 was formed by cutting one top portion in the crystal orientation 4 along the side surface direction, which is the longitudinal direction intersecting the top surface, to form the cut surface 2. However, it is not necessarily limited to this. can be changed as appropriate. For example, the cut surface 2 may be formed by cutting the apex of one diagonal corner in a substantially crystal orientation that is slightly deviated from the crystal orientation 4 along the side surface direction that is the longitudinal direction intersecting the top surface. .

The diamond dresser 14 in Example 4 has working portions 5 at two locations outside the two single-crystal diamonds 1d, and the grinding wheel W is formed by the working portions 5 at a total of four locations.

In addition, in Example 4, the inclined plane 3 is provided in the direction substantially perpendicular to the cut surface 2 from the top surface, but it is not necessarily limited to this and can be changed as appropriate. For example, the slope 3 may not be provided, and the angle of the slope 3 may be selected within the range of 20 to 80° according to the shape of the grinding wheel.

In addition, in Example 4, the configuration was such that two square prismatic single-crystal diamonds were used, but the configuration is not necessarily limited to this and can be changed as appropriate. For example, a configuration using a plurality of quadrangular prismatic single-crystal diamonds of three stones or more may be used.

Thus, also in Example 4, the diamond dresser for shaping the grinding wheel,
A quadrangular prismatic single crystal diamond,
a base metal for mounting the square prismatic single crystal diamond,
The quadrangular prismatic single crystal diamond has a cut surface cut along a side direction in which at least one of the apexes in a substantially crystal orientation intersects the top surface, and the end of the cut surface is the grinding wheel. The diamond dresser is attached to the base metal so as to be in contact with the base metal, and is low cost and long life by using a square columnar single crystal diamond, and cuts to the top of approximately crystal orientation. A diamond dresser with excellent wear resistance can be realized by having the surface.

The diamond dresser in the present invention can be widely used in the field of forming grinding wheels.

1: Quadrangular prismatic single crystal diamond
1a: Quadrangular prismatic single crystal diamond
1b: Quadrangular prismatic single crystal diamond
1c: Quadrangular prismatic single crystal diamond
1d: Quadrangular prismatic single crystal diamond
2: cut surface
3: slope
4: crystal orientation
5: Action part
7: base metal
8: base metal
9: Taper
10: top
11: Diamond dresser
12: Diamond dresser
13: Diamond dresser
14: Diamond dresser
21: Moving part
W: Grinding wheel

Claims (4)

A method for manufacturing a diamond dresser that forms a grinding wheel, comprising:
Any one of the four apexes of a square prismatic single crystal diamond having a square top surface and a bottom surface, which is substantially in the crystal orientation, is straight from the top surface to the bottom surface along the longitudinal direction of the square prism. forming a cut surface cut into
A method of manufacturing a diamond dresser, comprising a step of attaching the diamond dresser to a base metal so that an end portion of the cut surface serves as a working portion in contact with the grinding wheel. 2. The diamond according to claim 1, further comprising , prior to the step of attaching to the base metal, forming a slope extending from the top surface of the quadrangular prism toward the side surface in a direction substantially orthogonal to the cut surface. A method for manufacturing a dresser. 2. The method of manufacturing a diamond dresser according to claim 1, further comprising the step of forming a taper in the direction from the top surface of the quadrangular prism toward the cut surface before the step of attaching to the base metal. In the step of attaching to the base metal, each of the plurality of single-crystal diamonds having the cut surfaces is attached so that the end portions of the cut surfaces serve as working portions in contact with the grinding wheel. 4. A method for manufacturing a diamond dresser according to any one of 3 .

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