TW201808842A - Diamond Tools capable of carrying out a highly productive tool tip processing as the top surface and the tilted surface cannot cause any effects on the top surfaces of other spikes during the process - Google Patents

Abstract

An object of the present invention is to improve production efficiency of a diamond tool having a prismatic single crystal diamond as a base. The diamond tool 10 according to this provides: top surfaces 16a to 16d, which are formed, tilting from the upper surface at an angle of <theta>1, in a manner that the top surfaces and lines, perpendicular to the lines that equally divide the upper surfaces at each apex on the surface of the angle prism, forms an interception; and tilted surfaces 17a to 17h, which are formed to face the apex from an adjacent outer peripheral surface including the apex. The intersections of a pair of tilted surfaces and the top surfaces are set as spikes P-P4. In this way, the top surface and the tilted surface cannot cause any effects on the top surfaces of other spikes during the process, thereby carrying out a highly productive tool tip processing.

Description

Diamond tools

The present invention relates to a diamond tool for scribe lines on a substrate of a brittle material such as a glass substrate or a silicon wafer by using a diamond tip.

Previously, in order to scribe on a glass substrate or a silicon wafer, a tool using a diamond tip formed by a scribing wheel or a single crystal diamond was used. For glass substrates, the scribe wheel that rolls relative to the substrate is mainly used, but from the advantages of improving the strength of the substrate after scribing, etc., the use of diamond tips as fixed knives has also been continuously studied. Patent Document 1 proposes a scribing device using a glass scribing device having a conical front end for scribing on a glass plate. Further, in Patent Document 2, a diamond scribe is proposed in which the front end face of the diamond particles 3 is flat, a polishing surface is formed toward the ridge line, and a point of intersection between the polishing surface and the ridge line is formed. [Prior Art Literature] [Patent Literature] [Patent Literature 1] Japanese Patent Laid-Open No. 2013-043787 [Patent Literature 2] Japanese Patent Laid-Open No. 2005-088455

[Problems to be Solved by the Invention] In the previous case where single crystal diamond was used as a tool for processing, although there is a better processing direction according to the crystalline orientation, it is difficult to form a single plane processing suitable for each pointed tip. Problems with the machined surface. In addition, the surface called the top surface of the cutting edge is processed, and then a ridge line connected to the top surface is processed to form a pointed end. When this operation is repeated to form a plurality of cutting edges, if any edge processing is performed on the top surface When a defect occurs on the side, it is necessary to perform the top surface processing again. Similarly, it is also possible to perform processing on an inclined surface for forming a ridgeline, which may affect the position or angle of other ridgelines. Therefore, there are problems as follows: even where no processing is required, processing is necessary, or there may be defects in the already formed tips. The present invention has been made in view of such a previous problem, and an object thereof is to provide a diamond tool capable of performing high-efficiency cutting edge processing. [Technical means to solve the problem] In order to solve the problem, the diamond tool of the present invention includes a corner pillar-shaped base including an upper surface and a plurality of outer peripheral surfaces perpendicular to the corner base; and a top surface formed on the upper surface of the corner pillar. Each vertex includes the vertex of the upper surface and the line perpendicular to the bisector of the upper surface becomes an intercept from the upper surface in an angle of θ1; and a pair of inclined surfaces from the adjacent adjacent vertex The two outer peripheral surfaces are inclined toward the vertex; and the intersection point of the pair of inclined surfaces and the top surface is pointed. Here, the angle θ1 between the upper surface and the upper surface may be formed to exceed 0 ° and be 15 ° or less. [Effects of the Invention] According to the present invention having such a feature, when processing angular prism-shaped single crystal diamonds, it is possible to perform processing suitable for the crystalline orientation for each of the sharp tips, so that the processing quality is stable. In addition, since the top surface and the ridgeline are processed independently, the processing of the top surface and the ridgeline of one sharp point will not affect the top surface and the ridgeline of the other sharp points. Furthermore, in the case where the top surface is processed first and then the ridge line is processed later, it is possible to obtain an effect that even if a defect is generated on the top surface side and reprocessing is performed, it will not affect the top surface of other sharp points. The side surface of the tool is perpendicular to the outer peripheral surface of the upper surface, and can be easily positioned when mounted on the tool holder.

Next, an embodiment of the present invention will be described. FIG. 1 is a top view and a front view showing a manufacturing process of a diamond tool according to an embodiment of the present invention. The diamond tool uses a single crystal diamond with a square prism of a certain height as the base 11. The base 11 has an upper surface 12 and four outer peripheral surfaces 13a to 13d. The upper surface 12 is a square, and the vertices of the four sides of the upper surface 12 are 12a-12d. With respect to the base 11, sharp points are generated at the vertices 12 a to 12 d of the upper surface 12. Next, a description will be given of the processing of the pointed ends formed on the vertexes of the four sides of the upper surface 12. As shown in FIG. 2 (a) and FIG. 3, a vertex 12 a of the upper surface 12 is an intercept of the upper surface 12 by a line including the vertex 12 a and perpendicular to the bisector 15 of the upper surface 12. 14a, and the top surface 16a is formed so that the angle θ1 is inclined from the upper surface 12 toward the outer peripheral surfaces 13a and 13b. As shown in FIG. 2 (a), the vertex 12b of the upper surface 12 is such that the line perpendicular to the line containing the vertex 12b and dividing the upper surface 12 bisector 14 becomes the intercept 15a of the upper surface 12, and The top surface 16 b is formed so as to be inclined by an angle θ1 from the upper surface 12 toward the outer peripheral surfaces 13 b and 13 c. As shown in FIG. 2 (a), the vertex 12c of the upper surface 12 is inclined such that a line perpendicular to the bisector 15 becomes the intercept 14b of the upper surface 12 and is inclined from the upper surface 12 toward the outer peripheral surfaces 13c and 13d. The angle θ1 forms the top surface 16c. As shown in FIG. 2 (a), the vertex 12d of the upper surface 12 is inclined such that a line perpendicular to the bisector 14 becomes the intercept 15b of the upper surface 12 and is inclined from the upper surface 12 toward the outer peripheral surfaces 13d and 13a. The angle θ1 forms a top surface 16d. Here, the angle θ1 is set to more than 0 ° and 15 ° or less, and preferably 1 ° to 10 °. If it is close to 0 °, the processing area becomes large, the processing is time-consuming, and it may affect other top surfaces when the top surface is processed. If it exceeds 15 °, it will be difficult to process the inclined surface described later. Next, as shown in FIG. 2 (a) and FIG. 3, for the vertex 12a, a portion where the outer peripheral surface 13a is in contact with the top surface 16a is polished to form an inclined surface 17a, and a portion where the outer peripheral surface 13b is in contact with the top surface 16a Partly, an inclined surface 17b is formed. At this time, if the line formed by the two inclined surfaces 17a and 17b is set as the edge line 18a, the inclined surfaces 17a and 17b are symmetrical in the plan view of FIG. 2 (a), and the edge line 18a is parallel to the bisector 15 In this way, the inclined surfaces 17a, 17b are formed. The intersection of the top surface 16a and the ridgeline 18a formed in this manner is referred to as a pointed point P1. Next, as shown in FIG. 2 (a), the vertex 12b is formed by polishing the portion of the outer peripheral surface 13b that is in contact with the top surface 16b to form an inclined surface 17c, and polishing the portion of the outer peripheral surface 13c that is in contact with the top surface 16b. 17d. At this time, if the line formed by the two inclined surfaces 17c and 17d is set as an edge line 18b, the inclined surfaces 17c and 17d are symmetrical in the plan view of FIG. 2 (a), and the edge line 18b is parallel to the bisector 14 In this way, the inclined surfaces 17c and 17d are formed. The intersection of the top surface 16b and the ridgeline 18b formed in this manner is referred to as a pointed point P2. Moreover, although the inclined surface 17b of the pointed P1 and the inclined surface 17c of the pointed P2 are polished from the same outer peripheral surface 13b, they are independent surfaces. That is, since different surfaces are formed for each of the pointed surfaces with respect to the inclined surface, the grinding of each inclined surface will not affect the inclined surfaces of the other pointed surfaces. Next, as shown in FIG. 2 (a), the vertex 12c is formed by grinding the portion of the outer peripheral surface 13c that is in contact with the top surface 16c to form an inclined surface 17e, and grinding the portion of the outer peripheral surface 13d that is in contact with the top surface 16c is inclined. Face 17f. At this time, if the line formed by the two inclined surfaces 17e and 17f is set as an edge line 18c, the inclined surfaces 17e and 17f are symmetrical in the plan view of FIG. 2 (a), and the edge line 18c is parallel to the bisector 15 In this way, the inclined surfaces 17e and 17f are formed. The intersection of the top surface 16c and the ridgeline 18c formed in this manner is referred to as a pointed point P3. Next, as shown in FIG. 2 (a), the apex 12d is ground by grinding the portion of the outer peripheral surface 13d that is in contact with the top surface 16d to form an inclined surface 17g, and grinding the portion of the outer peripheral surface 13a that is in contact with the top surface 16d to form an inclined surface 17h. At this time, if the line formed by the two inclined surfaces 17g and 17h is set as an edge line 18d, the inclined surfaces 17g and 17h are symmetrical in the plan view of FIG. 2 (a), and the edge line 18d is parallel to the bisector 14 In this way, inclined surfaces 17g and 17h are formed. The intersection point of the top surface 16d and the ridgeline 18d formed in this manner is referred to as a pointed point P4. Here, as shown in FIG. 3, the angle θ2 formed by the top surface 16 a and the ridge line 18 a is preferably 130 ° or more and 160 ° or less. In order to set the angle θ2 to such a value, the angle θ1 between the upper surface 12 and the top surface 16a is preferably 15 ° or less. The same is true for other vertices. As a result, a diamond tool 10 having pointed points P1 to P4 can be formed near the vertices 12a to 12d of the base 12 of the quadrangular pillar. In addition, the lower part of the base 11 can be easily and stably attached to the tool holder by brazing or the like. At this time, the outer peripheral surface has a specific length below the base 11, and the diamond tool 10 can be reliably positioned relative to the tool holder by bringing the surface into contact with the tool holder. In addition, in this embodiment, the top surfaces 16a to 16d are formed on the vertices 12a to 12a of the upper surface of the base 11 of the quadrangular pillar, and then the inclined surfaces 17a to 17h are formed, but each of the inclined surfaces may be formed first. 17a to 17h and top surfaces 16a to 16d are formed thereafter. In any case, when the top surface is processed to form an inclined surface, and when a ridge line is processed, even if a defect occurs on the top surface side, only the top surface is processed again, and no other sharp points are processed. The top surface makes an impact. In addition, the same applies to the inclined surface, and it does not affect the inclined surface and the top surface of the adjacent sharp point during the ridge line processing of one sharp point. In each of the foregoing embodiments, sharp points are provided at four locations near each vertex of the upper surface of the base of the quadrangular pillar, but the sharp points do not necessarily need to be provided at all four locations, and at least two locations may be provided. In this embodiment, the base of the quadrangular post is used, but it is not limited to the quadrangular post, as long as the tip is formed on the vertex of the upper surface of the polygonal post. [Industrial Applicability] The present invention can easily produce a scribing tool using a synthetic diamond, and can be used as a scribing tool for various shapes of a brittle material substrate such as a thin glass plate.

10‧‧‧ Diamond Tools
11‧‧‧ base
12‧‧‧ top surface
12a ~ 12d‧‧‧Vertex
13a ~ 13d‧‧‧outer surface
14‧‧‧ bisector
14a‧‧‧intercept
14b‧‧‧intercept
15‧‧‧ bisector
15a‧‧‧intercept
15b‧‧‧intercept
16a ~ 16d‧‧‧Top
17a ~ 17h‧‧‧inclined surface
18a ~ 18d‧‧‧Edge
P1 ~ P4‧‧‧point θ1‧‧‧angle θ2‧‧‧angle

1 (a) and (b) are a plan view and a front view showing a manufacturing process of a diamond tool according to an embodiment of the present invention. 2 (a) and 2 (b) are a plan view and a front view of a diamond tool according to an embodiment. FIG. 3 is a partial enlarged view showing a pointed portion of a diamond tool according to an embodiment of the present invention.

10‧‧‧ Diamond Tools

12‧‧‧ top surface

13a ~ 13d‧‧‧outer surface

14a‧‧‧intercept

14b‧‧‧intercept

15a‧‧‧intercept

15b‧‧‧intercept

16a ~ 16d‧‧‧Top

17a ~ 17h‧‧‧inclined surface

18a ~ 18d‧‧‧Edge

P1 ~ P4‧‧‧ pointed

Claims (2)

A diamond tool includes: a corner pillar-shaped base including an upper surface and a plurality of outer peripheral surfaces perpendicular thereto; and a top surface including the apex of the upper surface on each vertex of the upper surface of the corner pillar and The vertical line of the upper bisector is inclined at an angle θ1 from the upper surface in such a way as to intercept; and a pair of inclined surfaces which are inclined toward the apex from the adjacent two outer peripheral surfaces containing the apex; and The intersection point of the pair of inclined surfaces and the top surface is a sharp point. For example, the diamond tool of claim 1, wherein the angle θ1 between the upper surface and the top surface is more than 0 ° and 15 ° or less.