JPH1158121A - Cutting tool and cutting device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lengthen a period until repolishing becomes necessary by providing plural edges. SOLUTION: A ridgeline 72a is formed between flank reliefs 71a and 71b, and a ridgeline 72b is formed between flank reliefs 71a and 71c. A cutting face 73 is formed on an opposite side face of a flank relief 71. When cutting work is performed on a workpiece by using a diamond cutting tool 7 formed in this way, first of all, a projection positioned in a place where the ridgeline 72a and the cutting face 73 cross each other is contacted with the workpiece, and it is worked. When pitching is caused on edges or abrasion of the edges is caused, in the next place, the projection positioned in a place where the ridgeline 72b and the cutting face 73 cross each other is contacted with the workpiece, and it is worked.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing tool and a processing apparatus having the same.

[0002]

2. Description of the Related Art As a method for manufacturing a mold having a groove shape on the surface as shown in FIG. 4, there is the following method. Creating a groove shape on a thin whetstone and grinding it while pressing the whetstone against the workpiece, or grinding or creating the tip of the cutting tool in the same shape as the desired groove shape, and then using the cutting tool There is a cutting process performed by moving a groove in a direction to cut a groove. In the case of a mold having such a groove shape, when the mold is used for optical element molding, generally, a method using a cutting process in which the roughness of the processed surface is relatively small. The mold is processed.

[0003] By the way, as a cutting tool for cutting,
Generally, a diamond bite is used. The tip of the diamond tool has a shape as shown in FIG. Normally, with a cutting tool having the same shape as this shape, 5 in FIG.
The portion indicated by 01 is called a rake face, and the portion indicated by 502 in FIG. 5 is called a rake face. Usually, the surface including the escape direction at the tip of the diamond bite is processed so as to be a diamond bite so as to have a crystal orientation resistant to wear and chipping.

[0004] By the way, the sharper the cutting edge of a diamond bite, the more the chipping tends to occur due to shock or vibration generated between a processing device equipped with the diamond bite and a workpiece. Also,
Even if a certain distance is machined, the cutting edge is chipped, and the cutting edge is worn without chipping. In the diamond bite that has become like this, when it is processed using this, the processed shape is broken,
The mirror surface of the machined surface will be deteriorated.

[0005] Therefore, the diamond bite whose cutting edge condition has deteriorated is used after re-grinding the rake face or the rake face and the rake face.

[0006]

However, if the cutting edge of the working tool is re-ground each time the tip of the processing tool is chipped or worn, it takes time to perform the re-polishing, and during that time, the processing is not performed. It will not be possible. For this reason, it becomes a factor that hinders an improvement in product yield.

Accordingly, an object of the present invention is to provide a processing tool which requires less re-polishing and a processing apparatus having the same.

[0008]

To this end, in the present invention, a plurality of cutting edges are provided for one processing tool. Further, the shape has at least three different shaving faces and at least one rake face, and has a shape such that a ridge is formed between the different shaving faces. I have.

Further, in the machining apparatus using the present invention, in the direction in which the above-described machining tool is brought closer to the cutting edge and the workpiece, the angle at which the ridge line between the scalpel and the scalpel is the closest. And a fixing part for the number of ridge lines between the bald surface and the bald surface. The processing tool was formed from diamond.

Next, the present invention will be described in more detail with reference to embodiments of the present invention.

[0011]

FIG. 1 shows a micro-cutting apparatus according to an embodiment of the present invention. FIG. 1 (a)
FIG. 1B is a side view of the micro-cutting device, and FIG.
It is a front view of a micro cutting device. This micro-cutting apparatus comprises a diamond tool 7, a tool holder 1 for fixing the diamond tool 7, a tool rest 2 for supporting the tool holder 1, and a table 3 for placing a workpiece 5. ing.

A jig 4 for holding the workpiece 5 is installed on the table 3, and the workpiece 5 is fixed by the jig 4. The table 3 can be two-dimensionally moved with respect to the diamond cutting tool 7 by a stage moving mechanism (not shown). Also,
In the tool holder 1, as shown in FIG.
Two trapezoidal-shaped cutting tools for angle setting 6
The diamond cutting tool 7 is fixed to the micro-cutting device by being screwed to the cutting tool 6. The cutting angle setting piece 6 is provided on a cutting rake angle adjusting piece 8 provided on the tool holder 1. The rake angle of the diamond bite 7 can be adjusted by adjusting the bite rake angle adjustment piece 8.

FIG. 2 shows a diamond cutting tool according to an embodiment of the present invention. FIG. 2 (a)
FIG. 2B is a front view of the diamond cutting tool 7, and FIG.
FIG. 2 is a diagram when viewed from the opposite direction to FIG. FIG. 2C is a side view, and FIG. 3 is a perspective view of the entire configuration of the diamond cutting tool 7. In this diamond tool 7, the diamond tool 7 is attached to the tip of the normal tool support 701. And
The bite support part 701 is provided with a bite angle setting attachment piece 6.
Screw holes are provided.

As shown in FIGS. 2 and 3, the diamond cutting tool 7 has three shaving surfaces 71a, 71b and 71c. A ridge line 72a is provided between the bald surfaces 71a and 71b, and a ridge line 72 is provided between the bald surfaces 71a and 71c.
b is formed. As can be seen from FIG. 2B, a rake face 73 is formed on the surface opposite to the bald surface 71. Thus, the diamond cutting tool 7 was formed. When cutting is performed on the workpiece 5 using the diamond cutting tool 7 formed as described above, first, the protrusion located at the intersection of the ridge line 72a and the rake face 73 is brought into contact with the workpiece 5, Perform processing.
Then, when pitching occurs on the cutting edge or when the cutting edge is worn, next, the protrusion located at the intersection of the ridge line 72b and the rake face 73 is brought into contact with the workpiece 5 to perform machining.

As described above, the diamond cutting tool 7 according to one embodiment of the present invention has a plurality of cutting edges. Therefore, even if one cutting edge is not suitable for processing by continuing the processing, the processing can be performed by another cutting edge. Therefore, the number of times of re-polishing of the cutting edge performed during the processing can be reduced, and the yield can be improved.

Next, a method of mounting the diamond cutting tool 7 on a micro-cutting apparatus and performing the processing will be described. This micro-cutting machine is provided with a cutting tool 6 for attaching a cutting tool for attaching a diamond cutting tool 7. In the embodiment of the present invention, there are provided two types of the cutting tool 6 for setting the tool angle.
The diamond tool 7 is usually attached to the tool support 701, and the tool support 701 is fixed to the attachment piece 6 by turning the tool support 701 to the diamond tool 7.
Is fixed.

In addition, the cutting piece 6
Has a trapezoidal shape as described above, and has a bite supporting portion 701 fitted to one side thereof and fixed. By fixing the bite support portion 701 to the bite angle attachment frame 6, the protrusion located at the position where one of the ridge lines 72a and 72b intersects the rake face 73 is closest to the workpiece 5. By lowering the tool holder 1 fixed in this way, the workpiece 5
The cutting process is performed by bringing the diamond tool 7 into contact with the cutting tool and moving the table in the cutting direction.

If chipping or the condition of the cutting edge becomes worse during use of the micro-cutting device, the bite supporting portion 701 is attached to a different bite angle mounting frame 6.
Is fixed. By doing so, the projection located at the intersection of the rake face 73 and the ridge line different from the previous cutting work becomes closest to the workpiece. After that, cutting is performed as described above.

In the embodiment of the present invention, since there are two ridges between the scalpel and the scalpel, which are the cutting edges, the cutting tool 6 is provided with two ridges.
One was prepared and fixed. This is because the diamond cutting tool 7 can be used as a cutting edge when the cutting edges are fixed at different angles, and therefore, it is necessary to provide the cutting tool 6 for setting the cutting tool angle that matches the angle.

The present invention is not limited to this, and it is also possible to rotate the cutting tool 6 by attaching the cutting tool 6 to the tool holder 1 rotatably, and to set the angle of the cutting tool. good.

[0021]

As described above, the working tool according to the present invention can extend the period until re-polishing is required, and performs working using a working apparatus equipped with this working tool. Thereby, the processing efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a view showing a micro-cutting apparatus according to an embodiment of the present invention, where (a) is a side view and (b)
Is a front view.

FIG. 2 is a view showing a diamond cutting tool according to an embodiment of the present invention, wherein (a) is a front view, (b) is a rear view, and (c) is a side view.

FIG. 3 is a perspective view of a diamond cutting tool according to an embodiment of the present invention.

FIG. 4 shows an example of a mold manufactured by cutting.

FIG. 5 is a perspective view of a conventional diamond cutting tool.

[Explanation of symbols]

 Reference Signs List 1 byte holder 2 tool post 3 table 4 jig 5 workpiece 6 byte angle setting attachment piece 7 diamond tool 71a, b, c face 72a, b ridge 73 rake face 701 tool support 8 byte rake angle adjustment piece 501 rake Face 502

Claims (5)

[Claims] 1. A processing tool for cutting and creating a desired shape on a workpiece, the processing tool having a plurality of cutting edges. 2. The processing tool has a buffing surface and at least one rake face, and at least three different buffing surfaces are formed such that a ridge is formed between each of the baking surfaces. The machining tool according to claim 1, wherein 3. A processing tool for cutting and creating a desired shape on a workpiece, a support for supporting the processing tool, and a drive for relatively moving the workpiece and the processing tool. In the machining apparatus provided with a member, the machining tool has at least three adjacent different shaving surfaces and at least one rake face, and has a plurality of cutting edges, and the support portion includes the shaving One ridge line between a surface and the bald surface is provided with a fixture for fixing the processing tool by inclining the processing tool so as to be closest to a direction approaching the workpiece. Processing apparatus characterized by the following: 4. The processing apparatus according to claim 3, wherein the number of the fixing tools is equal to the number of ridge lines between the scalpels. 5. The processing tool according to claim 1, wherein the processing tool is made of diamond.