JP6771207B2 - Multipoint diamond tool and its manufacturing method - Google Patents

Description

The present invention relates to a multipoint diamond tool for scribing a brittle material substrate such as a glass substrate or a silicon wafer by a diamond point, and a method for manufacturing the same.

Conventionally, in order to scribe a glass substrate or a silicon wafer, a scribing wheel or a tool using a diamond point made of a single crystal diamond has been used. For glass substrates, scribing wheels that roll with respect to the substrate have been mainly used, but due to the advantages of improving the strength of the substrate after scribe, the use of diamond points, which are fixed blades, has also been considered. It's coming. Patent Documents 1 and 2 propose a point cutter for scribing a substrate having a high hardness such as a sapphire wafer or an alumina wafer. In these patent documents, a tool having a cut point on the ridgeline of a pyramid and a tool having a conical tip are used. Further, Patent Document 3 proposes a scribe device using a glass scriber having a conical tip for scribing a glass plate.

Japanese Unexamined Patent Publication No. 2003-183040 Japanese Unexamined Patent Publication No. 2005-079529 Japanese Unexamined Patent Publication No. 2013-043787

It is necessary to change the point because the point wears as the scribe is advanced with the tool that is a conventional fixed blade. With a pyramidal or conical tool, there are two or up to four vertex points that can be used. Therefore, if the points at two or four points are changed, it is necessary to replace the tool, and there is a problem that the replacement frequency becomes high. Also, in scribe with a tool, the points need to come into contact with the substrate at an appropriate angle. However, with the conventional tool, it is necessary to rotate the tool in the axial direction when changing the point, and it is not easy to adjust this contact angle with high accuracy.

Therefore, as shown in FIG. 1, the vertices of the prismatic tool are polished so as to overlap each other from both side surfaces to form an inclined surface, and the scribing tool 100 has points P1, P2 ... On both sides of the line of intersection of the inclined surfaces. Can be considered. When such a scribing tool is used and the ridge line is preceded and the point P1 is pressed against the substrate 101 to scribe as shown in FIG. 1A, the scribe is performed so as to pass through the edge of the substrate, so-called outside. Even when scribe to the substrate 101 is completed by cutting, the other adjacent point P2 is not damaged.

However, as shown in FIG. 1 (b), when the point P2 is used and the ridgeline is tilted forward so as to be backward and the scribe is performed, the point P1 that is not used when the outer cut is completed is also included. There is a problem that the surface of the substrate 101 may come into contact with the surface and be damaged.

The present invention has been made in view of such a problem, and even if the point used for the scribe is worn, the point position can be easily changed to reduce the replacement frequency, and the scribe is removed. It is an object of the present invention to provide a diamond tool and a method for manufacturing the diamond tool, which does not damage other points adjacent to the tool even when finished by cutting.

In order to solve this problem, the multipoint diamond tool of the present invention is a prism having a predetermined thickness, a base having two side surfaces and a plurality of outer peripheral surfaces, and at least the first outer peripheral surface of the base. The first and second top surfaces adjacent to each other , the first top surface, one side surface of the base, and the first outer circumference provided between the surface and the adjacent second outer peripheral surface. A first inclined surface provided so as to be sandwiched between the surfaces, the second top surface, one side surface of the base, and a second inclined surface provided so as to be sandwiched between the second outer peripheral surfaces. If the the first top surface, and other aspects of the base, and a third inclined surface provided so as to be sandwiched between the first outer peripheral surface of said second top surface, said base A fourth inclined surface provided so as to be sandwiched between the other side surface and the second outer peripheral surface , a first ridge line which is an intersection of the first and third inclined surfaces, and the second It has a second ridge line which is a line of intersection of the fourth inclined surfaces, and at least the outer peripheral surface of the base is formed of diamond, and the first top surface, the first ridge line, and the second The point is the point formed by the top surface and the second ridgeline.

The multipoint diamond tool forms a first top surface between a second outer peripheral surface adjacent to the first outer peripheral surface at least, and the second outer peripheral surface with the first top surface. A second top surface is formed between them, and the area between the first outer peripheral surface and the first top surface is polished toward one side surface to form a first inclined surface, and the second top surface is formed. The outer peripheral surface and the second top surface are polished toward one side surface to form a second inclined surface, and the other is between the first outer peripheral surface and the first top surface. Polishing toward the side surface to form a third inclined surface, and polishing between the second outer peripheral surface and the second top surface toward the other side surface to form a fourth inclined surface. It is manufactured by.

In order to solve this problem, the multipoint diamond tool of the present invention is a prism having a predetermined thickness, a base having two side surfaces and a plurality of outer peripheral surfaces, and at least the first outer peripheral surface of the base. The first and second top surfaces provided between the surface and the adjacent second outer peripheral surface, the first and second top surfaces, one side surface of the base, and the first and second top surfaces. On the first and second inclined surfaces provided so as to be sandwiched between the outer peripheral surfaces of the above, the first and second top surfaces, the other side surfaces of the base, and the first and second outer peripheral surfaces. At the intersection of the third and fourth inclined surfaces provided so as to be sandwiched, the first ridge line which is the intersection of the first and third inclined surfaces, and the intersection of the second and fourth inclined surfaces. A second ridge line, a fifth inclined surface provided between the first and second inclined surfaces and the first and second top surfaces, and the third and fourth inclined surfaces and the first , A sixth inclined surface provided between the second top surfaces, at least the outer peripheral surface of the base is formed of diamond, the first top surface and the first ridge line, and The point is the point formed by the second top surface and the second ridge line.

In the multipoint diamond tool, the first and second outer peripheral surfaces are located between the adjacent first and second outer peripheral surfaces and one side surface within a range of one half of the thickness of the base. A fifth inclined surface is formed by polishing toward the intersecting ridgeline of the base, and between the first and second outer peripheral surfaces and the other side surface within the range of the other 1/2 of the thickness of the base. , The first and second outer peripheral surfaces are polished toward the intersecting ridges to form a sixth inclined surface, and at least the first outer peripheral surface is the second outer peripheral surface and the fifth inclined surface. A first top surface is formed between the top surface and the sixth inclined surface, and the second outer peripheral surface is between the first top surface, the fifth inclined surface, and the sixth inclined surface. A second top surface is formed on the surface, and the area between the first outer peripheral surface, the first top surface, and the fifth inclined surface is polished toward one side surface to form a first inclined surface. Then, the second outer peripheral surface, the second top surface, and the fifth inclined surface are polished toward one side surface to form a second inclined surface, and the first outer peripheral surface is formed. The first top surface and the sixth inclined surface are polished toward the other side surface to form a third inclined surface, and the second outer peripheral surface, the second top surface and the second inclined surface are formed. It is manufactured by polishing the surface with the sixth inclined surface toward the other side surface to form the fourth inclined surface.

According to the present invention having such a feature, points can be provided on both sides of the side surface of the diamond tool. Therefore, even if one point is worn, another new point can be used, and the effect that the frequency of replacement of the diamond tool can be reduced can be obtained. Also, even if the diamond tool is run and scribed with the top surface first and the ridgeline behind, and the scribe is finished with an outer cut, other points of the diamond tool will not be damaged. The effect is obtained.

FIG. 1 is a side view showing a scribe using a diamond tool that is prismatic and has two points in the width direction. FIG. 2 is a side view and a front view showing a manufacturing process of the multipoint diamond tool according to the first embodiment of the present invention. FIG. 3 is a side view and a front view of the multipoint diamond tool according to the first embodiment of the present invention. FIG. 4 is a side view showing a scribe using the multipoint diamond tool according to the first embodiment. FIG. 5 is a front view showing a manufacturing process of the multipoint diamond tool according to the second embodiment of the present invention. FIG. 6 is a side view and a front view of the multipoint diamond tool according to the second embodiment of the present invention. FIG. 7 is a plan view, a side view, and a front view of the multipoint diamond tool according to the third embodiment of the present invention.

Next, the first embodiment of the present invention will be described. FIG. 2 is a side view and a front view showing a manufacturing process of the multipoint diamond tool (hereinafter, simply referred to as a diamond tool) 10 according to the present embodiment, and FIG. 3 is a side view and a front view of the processed diamond tool 10. .. The diamond tool 10 is based on a polygonal prism having a certain thickness and consisting of an arbitrary number of sides. In this embodiment, a regular quadrangular base 11 having a constant thickness is made of single crystal diamond. The base 11 has four outer peripheral surfaces 13a to 13d parallel to an axis perpendicular to the thickness direction (an axis perpendicular to the paper surface in FIG. 2A), and side surfaces 14a and 14b perpendicular to the axis.

In the present embodiment, as shown in FIG. 2B, one outer peripheral surface 13a is polished toward the outer peripheral surface 13b adjacent to the outer peripheral surface 13a with respect to the base 11, and the first outer peripheral surface 13a is formed on the corner portion of the base. The top surface 15a is formed. Subsequently, the second top surface 15b is formed by polishing toward the first top surface 15a formed on the outer peripheral surface 13a adjacent to the outer peripheral surface 13b. The first top surface 15a and the second top surface 15b are formed adjacent to the corners sandwiched between the outer peripheral surfaces 13a and 13b. Similarly, the outer peripheral surface 13b is polished toward the adjacent outer peripheral surface 13c to form the first top surface 15c, and the outer peripheral surface 13c is directed toward the adjacent first top surface 15c formed on the outer peripheral surface 13b. Polish to form a second top surface 15d. Although not shown in FIG. 2B, in the same manner, polishing is performed from the outer peripheral surface 13c toward the adjacent outer peripheral surface 13d to form the first top surface 15e, which is formed on the outer peripheral surface 13b from the outer peripheral surface 13d. Polishing toward the adjacent first top surface 15e forms the second top surface 15f. Similarly, top surfaces 15g and 15h are formed between the outer peripheral surface 13d and the outer peripheral surface 13a. As a result, first and second top surfaces adjacent to each other are formed at each corner portion sandwiched between the outer peripheral surfaces of the square pillar.

Next, as shown in FIG. 3A, the area between the outer peripheral surface 13a and the top surface 15a is polished toward the side surface 14a to form the first inclined surface 16a. Similarly, the space between the outer peripheral surface 13b and the top surface 15b is polished toward the side surface 14a to form the second inclined surface 16b. Regarding the other side surface 14b, the space between the outer peripheral surface 13a and the top surface 15a and the space between the outer peripheral surface 13b and the top surface 15b are polished toward the side surface 14b to form the third and fourth inclined surfaces 17a and 17b. To do. At this time, the first and third inclined surfaces 16a and 17a are polished so as to intersect each other, and the second and fourth inclined surfaces 16b and 17b are polished so as to intersect each other. In this way, the inclined surfaces 16a and 17a intersect with respect to the outer peripheral surface 13a, and the first ridge line 18a parallel to the side surface is located in the middle of the thickness direction of the base 11, preferably at the center position as shown in FIG. 3 (b). Is formed. Similarly, the inclined surfaces 16b and 17b intersect to form a second ridge line 18b parallel to the side surface in the middle, preferably at the center position, in the thickness direction of the base 11. As a result, at the corners sandwiched between the outer peripheral surface 13a and the outer peripheral surface 13b, a first ridge line 18a formed by the first and third inclined surfaces 16a and 17a and a point P1 composed of the top surface 15a are formed. To. Similarly, a second ridge line 18b formed by the second and fourth inclined surfaces 16b and 17b and a point P2 composed of a top surface 15b are formed.

Next, the outer peripheral surface 13b and the space between the outer peripheral surface 13c and the top surfaces 15c and 15d are polished from the side surface 14a to form the first and second inclined surfaces 16c and 16d. Further, from the other side surface 14b, the outer peripheral surface 13b, the outer peripheral surface 13c and the top surface 15c, 15d are polished to form the third and fourth inclined surfaces 17c, 17d. At this time, the inclined surfaces 16c and 17c are polished so as to intersect each other, and the inclined surfaces 16d and 17d are polished so as to intersect each other. In this way, with respect to the outer peripheral surface 13b, the first and third inclined surfaces 16c and 17c intersect and are intermediate in the thickness direction of the base 11, preferably at the center position as shown in FIG. 3B, with respect to the side surface. A parallel first ridge 18c is formed. Similarly, the second and fourth inclined surfaces 16d and 17d intersect to form a second ridge line 18d parallel to the side surface in the middle, preferably at the center position, in the thickness direction of the base 11. ..

Similarly, the outer peripheral surfaces 13c and the outer peripheral surfaces 13d and the top surfaces 15e and 15f are polished from the side surfaces 14a to form the first and second inclined surfaces 16e and 16f. The outer peripheral surface 13c, the outer peripheral surface 13d and the top surfaces 15e and 15f are polished from the side surface 14b to form the third and fourth inclined surfaces 17e and 17f. Also in this case, the inclined surfaces 16e and 17e are polished so as to intersect each other, and the inclined surfaces 16f and 17f are polished so as to intersect each other. In this way, with respect to the outer peripheral surface 13c, the first ridge line 18e is formed at the intersection of the first and third inclined surfaces 16e and 17e and at the middle, preferably the center position, in the thickness direction of the base 11. Similarly, the second and fourth inclined surfaces 16f and 17f intersect to form the second ridge line 18f in the middle, preferably at the center position, in the thickness direction of the base 11.

Similarly, the outer peripheral surface 13d, the space between the outer peripheral surface 13a and the top surface 15g, 15h is polished from the side surface 14a to form the first and second inclined surfaces 16g, 16h, and the first and second inclined surfaces 16g, 16h are polished from the side surface 14b to form the third and third surfaces. The inclined surfaces 17g and 17h of No. 4 are formed. Also in this case, polishing is performed so that the inclined surfaces 16g and 17g and 16h and 17h intersect with each other. Similarly, with respect to the outer peripheral surface 13d, the first ridge line 18 g is formed at the middle, preferably at the center position, in the thickness direction of the base 11 at the intersection of the first and third inclined surfaces 16 g and 17 g. Similarly, the second ridge line 18h is formed at the intersection of the second and fourth inclined surfaces 16h and 17h in the middle, preferably at the center position, in the thickness direction of the base 11.

In this way, the space between the outer peripheral surface and the top surface is polished from the side surfaces 14a and 14b, respectively, to form a pair of inclined surfaces and ridge lines 18a to 18h. In this way, at the corner portion sandwiched between the outer peripheral surface 13a and the outer peripheral surface 13b, the intersection formed by the top surface 15a and the ridge line 18a becomes the point P1, and the intersection of the top surface 15b and the ridge line 18b becomes the point P2. Also at the corner between the outer peripheral surface 13b and the outer peripheral surface 13c, the intersection formed by the top surface 15c and the ridge line 18c is the point P3, and the intersection of the top surface 15d and the ridge line 18d is the point P4. The same applies to the other outer peripheral surfaces. Here, since the base 11 has outer peripheral surfaces on all sides, it is possible to form eight points P1 to P8 with two points for each corner.

Such an inclined surface can be easily formed by laser processing. Further, after the laser processing, further mechanical polishing may be performed to make the portion forming the ridge line a more precise polished surface.

Next, a case of scribe using the diamond tool 10 of this embodiment will be described with reference to FIG. When scribing the substrate 30, as shown in FIG. 4A, the angle between the ridgeline and the diamond tool 10 with respect to the substrate 30 is from vertical to counterclockwise, and the diamond tool 10 is slightly tilted from the direction perpendicular to the paper surface. One point P1 is fixed so as to be in contact with the substrate 30, and the diamond tool 10 is moved in the direction of arrow A in the figure to perform scribing. At this time, scribe is performed so that the top surface 15a of the point P1 is in the front in the traveling direction and the ridge line 18a is in the rear. Since the diamond tool 10 does not roll during this scribe, it will scribe at the same point P1. Then, even if the diamond tool is run to the end of the substrate 30 and the scribe is finished by cutting outside, the other points P2 formed at the same corners are ahead, so that the diamond tool 10 is moved from the position of the substrate 30. The other point P2 is not damaged even if it is separated as shown in the figure.

When scribe is performed so that the top surface is ahead and the ridgeline is behind, various conditions such as scribe load can be taken in a wide range, which is effective. Further, when forming a scribe line without vertical cracks on the substrate, it is possible to obtain an effect such as generating a crack directly under the scribe line with the edge of the substrate as a base point by terminating the scribe with an outer cut. According to the present embodiment, the outer cutting can be performed in this case as well without damaging other points.

Here, as shown in FIG. 4A, the top surface is preceded and the ridgeline is scribed later. However, as shown in FIG. 4B, the diamond tool 10 is tilted in the opposite direction to set the point P2. It goes without saying that you can use it to scribe. In this case, the point P1 may be damaged, so do not end the scribe by cutting outside.

When the point P1 in contact with the substrate 30 deteriorates due to wear, the diamond tool 10 is rotated by 90 °, the point P3 is brought into contact with the substrate 30, and scribe is performed in the same manner. In this case as well, when the scribe is performed so that the top surface 15c is the traveling direction and the ridge line 18c is the rear side, the point P6 is not damaged even if the scribe is finished by the outer cutting. Further, even if the diamond tool 10 is rotated by 90 °, the angle at which the ridgeline of the cutting edge contacts the substrate does not change, so that it is easy to set the contact angle with respect to the substrate at the time of point exchange.

When all four points P1, P3, P5, and P7 are worn, the diamond tool 10 is inverted and fixed again so that the ridge line and the brittle material substrate are at a predetermined angle, and points P2 on the other side surface. Scribing is performed by sequentially contacting P4, P6, and P8. In this way, the point position can be changed four more times to perform scribe, and points can be exchanged a total of eight times to perform scribe.

Next, the diamond tool 40 according to the second embodiment of the present invention will be described. 5 is a front view showing the manufacturing process of this embodiment, FIG. 6 is a side view and a front view of the diamond tool 40, and the same parts as those of the first embodiment are designated by the same reference numerals. In this second embodiment, first, as shown in FIG. 5A, polishing is performed from the side surface 14a toward the intersecting ridges of the outer peripheral surfaces 13a and 13b, and the thickness of the base is within 1/2 of the thickness of the base. The inclined surface 41a of the above is formed. Next, symmetrically with this, a sixth inclined surface 42a is formed within a range within 1/2 of the thickness of the base from the side surface 14b toward the intersecting ridge line of the outer peripheral surfaces 13a and 13b. Next, polishing is performed from the side surface 14a toward the intersecting ridges of the outer peripheral surfaces 13b and 13c to form a fifth inclined surface 41b within a range of the thickness of the base within 1/2. Next, symmetrically with this, a sixth inclined surface 42b is formed within a range within 1/2 of the thickness of the base from the side surface 14b toward the intersecting ridge line of the outer peripheral surfaces 13b and 13c. Further, the fifth inclined surface 41c is formed within a range of the thickness of the base within 1/2 by polishing from the side surface 14a toward the intersecting ridges of the outer peripheral surfaces 13c and 13d. Next, symmetrically with this, the sixth inclined surface 42c is formed within a range within 1/2 of the thickness of the base from the side surface 14b toward the outer peripheral surfaces 13c and 13d. Further, polishing is performed from the side surface 14a toward the outer peripheral surfaces 13d and 13a to form a fifth inclined surface 41d within a range of the thickness of the base within 1/2. Next, symmetrically with this, the sixth inclined surface 42d is formed within a range within 1/2 of the thickness of the base from the side surface 14b toward the outer peripheral surfaces 13d and 13a.

Next, as shown in FIG. 5B as in the first embodiment described above, the first top surface 15a is formed from one outer peripheral surface 13a toward the adjacent outer peripheral surface 13b. Subsequently, the top surfaces 15b to 15h are formed in the same manner as in the first embodiment described above. Next, as shown in FIG. 6B, the outer peripheral surface 13a, the top surface 15a, and the fifth inclined surface 41a are polished toward the side surface 14a to form the first inclined surface 16a. Subsequently, the outer peripheral surface 13a, the top surface 15a, and the sixth inclined surface 42a are polished toward the side surface 14b to form the second inclined surface 17a, and the first inclined surface 16a and the second inclined surface are formed. The line of intersection with 17a is the ridge line 18a. Similarly, for the other top surfaces 15b to 15h, the first inclined surface 16b to 16h, the second inclined surface 17b to 16h, and the ridge line 18b to 18h are formed.

In this way, each of the top surfaces 15a to 15h becomes a pentagon having a smaller area than that of the first embodiment. Since the top surface needs to be precisely processed, the smaller the area, the shorter the polishing time and the amount of polishing of the top surface, and the more rationalized the manufacturing process of the diamond tool 40.

Even when scribing using the point P1 of the diamond tool 40, if the point P1 deteriorates due to wear, the diamond tool 10 is rotated by 90 ° and the points P3, P5, and P7 are sequentially used. When all four points are worn, the diamond tool 10 is inverted. Then, the points P2, P4, P6, and P8 are sequentially brought into contact with each other so that the angle formed by the ridge line and the brittle material substrate is constant, and the point position is changed a total of four times even after inversion to perform scribe. In this way, the scribe can be performed by changing the points a total of 8 times.

Next, a third embodiment of the present invention will be described. In the first and second embodiments described above, a regular quadrangle base is used, but a polygon having any number of sides may be used as the base. Further, although eight points are provided around each base, at least one corner of the polygon may have one point on the opposite outer peripheral surfaces. In the third embodiment, a triangular base 61 is used as shown in FIG. The base 61 has three outer peripheral surfaces 63a, 63b, 63c and side surfaces 64a, 64b perpendicular to the axis. Then, the first top surface 65a, the first inclined surface 66a, the third inclined surface 67a, and the first ridge line 68a are formed on the outer peripheral surface 63a in the same manner as in the first and second embodiments described above. .. Further, a second top surface 65b, a second inclined surface 66b, a fourth inclined surface 67b, and a second ridge line 68b are formed on the outer peripheral surface 63b. In this way, the diamond tool 60 having only two points P1 and P2 can be formed.

In the first and second embodiments described above, eight points are provided around the periphery, but it is not always necessary to provide inclined surfaces and points at all corners. However, it is preferable to provide as many points as possible on the outer peripheral portion within a range where adjacent points do not interfere with each other. As a result, when each point is worn, the points can be exchanged simply by rotating the diamond tool, and the frequency of exchanging the diamond tool can be reduced. Further, the shape of the base is not limited to a triangle or a quadrangle, and can be any polygon such as a hexagon or an octagon.

Further, in the above-described embodiment, the entire base is composed of single crystal diamond, but since it is sufficient if the surface portion in contact with the brittle material substrate is diamond, it is formed by using cemented carbide or sintered diamond. A polycrystalline diamond layer may be formed on the outer peripheral surface of the base and the surface of the ridgeline, and this may be polished more precisely to form points. Further, single crystal or polycrystalline diamond which is doped with impurities such as boron and has conductivity may be used. By using a diamond having conductivity, an inclined surface and a through hole can be easily formed by electric discharge machining.

Further, in the above-described embodiment, the diamond tool is scribed so that the top surface is preceded at each point and the ridgeline is behind, but the ridgeline of each point is preceded and the top surface is behind. You may.

The multipoint diamond tool of the present invention can be used in a scribing device for scribing a brittle material substrate, and can be effectively used especially for a scribing object having a high hardness in which the diamond tool wears a lot.

10, 40, 60 Multipoint diamond tool 11 base 13a to 13d, 63a to 63c Outer surface 14a, 14b, 64a, 64b Side surface 15a, 15c, 15e, 15g, 65a First top surface 15b, 15d, 15f, 15h, 65b Second top surface 16a, 16c, 16e, 16g, 66a First inclined surface 16b, 16d, 16f, 16h, 66b Second inclined surface 17a, 17c, 17e, 17g, 67a Third inclined surface 17b, 17d, 17f, 17h, 67b Fourth inclined surface 18a, 18c, 18e, 18g, 68a First ridge line 18b, 18d, 18f, 18h, 68b Second ridge line 41a to 41d Fifth inclined surface 42a to 42d Inclined surface of 6 P1 to P8 points

Claims (4)

A base that is prismatic with a predetermined thickness and has two side surfaces and a plurality of outer peripheral surfaces.
At least the first and second top surfaces adjacent to each other provided between the first outer peripheral surface and the adjacent second outer peripheral surface of the base , and
Said first top surface, and one side of the base, a first inclined surface provided so as to be sandwiched between the first outer peripheral surface of
A second top surface, one side surface of the base, and a second inclined surface provided so as to be sandwiched between the second outer peripheral surface.
A first top surface, another side surface of the base, and a third inclined surface provided so as to be sandwiched between the first outer peripheral surface.
A fourth inclined surface provided so as to be sandwiched between the second top surface, the other side surface of the base, and the second outer peripheral surface.
The first ridge line, which is the line of intersection of the first and third inclined surfaces,
It has a second ridge line, which is a line of intersection of the second and fourth inclined surfaces.
At least the outer peripheral surface of the base is made of diamond.
A multi-point diamond tool whose points are points formed by the first top surface and the first ridge line, and the second top surface and the second ridge line. A base that is prismatic with a predetermined thickness and has two side surfaces and a plurality of outer peripheral surfaces.
The first and second top surfaces provided between at least the first outer peripheral surface of the base and the adjacent second outer peripheral surface, and
The first and second top surfaces, one side surface of the base, and the first and second inclined surfaces provided so as to be sandwiched between the first and second outer peripheral surfaces.
The first and second top surfaces, the other side surfaces of the base, and the third and fourth inclined surfaces provided so as to be sandwiched between the first and second outer peripheral surfaces.
The first ridge line, which is the line of intersection of the first and third inclined surfaces,
The second ridge line, which is the intersection of the second and fourth inclined surfaces,
A fifth inclined surface provided between the first and second inclined surfaces and the first and second top surfaces, and
It has a sixth inclined surface provided between the third and fourth inclined surfaces and the first and second top surfaces.
At least the outer peripheral surface of the base is made of diamond.
A multi-point diamond tool whose points are points formed by the first top surface and the first ridge line, and the second top surface and the second ridge line. The method for manufacturing a multipoint diamond tool according to claim 1.
A first top surface is formed between the second outer peripheral surface adjacent to the first outer peripheral surface at least.
A second top surface is formed between the second outer peripheral surface and the first top surface.
The area between the first outer peripheral surface and the first top surface is polished toward one side surface to form a first inclined surface.
The area between the second outer peripheral surface and the second top surface is polished toward one side surface to form a second inclined surface.
The area between the first outer peripheral surface and the first top surface is polished toward the other side surface to form a third inclined surface.
A method for manufacturing a multipoint diamond tool for forming a fourth inclined surface by polishing between the second outer peripheral surface and the second top surface toward the other side surface. The method for manufacturing a multipoint diamond tool according to claim 2.
Polishing toward the intersecting ridges of the first and second outer peripheral surfaces between the adjacent first and second outer peripheral surfaces and one side surface within one half of the thickness of the base. To form a fifth inclined surface,
Polishing toward the intersecting ridges of the first and second outer peripheral surfaces between the first and second outer peripheral surfaces and the other side surface within the other 1/2 of the thickness of the base. Form a sixth inclined surface,
A first top surface is formed between the second outer peripheral surface, the fifth inclined surface, and the sixth inclined surface at least for the first outer peripheral surface.
Regarding the second outer peripheral surface, a second top surface is formed between the first top surface, the fifth inclined surface, and the sixth inclined surface.
The first outer peripheral surface, the first top surface, and the fifth inclined surface are polished toward one side surface to form the first inclined surface.
The second outer peripheral surface, the second top surface, and the fifth inclined surface are polished toward one side surface to form a second inclined surface.
The area between the first outer peripheral surface, the first top surface, and the sixth inclined surface is polished toward the other side surface to form a third inclined surface.
A method for manufacturing a multipoint diamond tool for forming a fourth inclined surface by polishing the second outer peripheral surface, between the second top surface and the sixth inclined surface toward the other side surface.

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