JPH06190609A - Diamond tool - Google Patents

Abstract

PURPOSE:To improve abrasion resistance of a diamond tool and to extend life by arranging a cutting face and a front flank of a monocrystal, diamond tool on a specific crystal zone, and by arranging the front flank between a plurality of specific faces. CONSTITUTION:In a monocrystal diamond 10, there is a strong correlation between a crystal orientation of a rough diamond and a life of a tool. Then, in the tool 11, a front flank 12 and a cutting face 13 are arranged on a [110] crystal zone 15 of the diamond 10 or on a crystal zone which is crystallographically equivalent to it. And a crystal orientation of the front flank 12 is constituted between a (001) face and a (100) face or on the face crystallographically equivalent to it. By this, abrasion resistance of the tool 11 is improved and the life is extended.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diamond tool, and more particularly to a single crystal diamond tool used for high precision cutting of non-ferrous metal materials such as Al alloy and Cu alloy.

[0002]

2. Description of the Related Art A conventional diamond tool is Japanese Patent Publication Sho 58.
The one described in 37082 is known. This was configured so that the crystal orientation of the front flank was between the (110) plane and the (100) plane.

[0003]

However, in the above-mentioned prior art, in order to exert the burnishing effect, the tool is configured with a crystal orientation such that the front flank surface is appropriately worn, and the tool life is short. was there.

[0004]

In order to solve the above problems, a diamond tool according to the present invention has a rake face and a front flank face in a [110] crystal band or a crystallographically equivalent crystal band. It is arranged on the upper side, and the front flank is arranged so as to be between the (011) plane and the (100) plane or a plane crystallographically equivalent thereto. Furthermore, the rake face and the front flank of the single crystal diamond tool are arranged on the [110] crystal band or a crystallographically equivalent crystal band, and the front flank is (011) face and (100) face or , Which is configured to be in the middle of the plane equivalent to this crystallographically.

[0005]

The rake face and the front flank of the single crystal diamond tool are arranged on the [110] crystal band or a crystallographically equivalent crystal band, and the front flanks are the (011) face and the (100) face. Alternatively, a diamond tool having a long tool life can be obtained by improving the wear resistance of the diamond tool by arranging it so as to be between crystallographically equivalent planes.

[0006]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a crystal orientation of a rough diamond, and FIG.
Shows the crystallographic orientation of a prior art diamond tool.

In a single crystal diamond tool, there is a strong correlation between the crystal orientation of diamond and the tool life. Tool 1 is
The front flank 2 and the rake face 3 are [001] of the diamond 4.
Place it on the crystal zone 5 and set the crystal orientation of the front flank to (110)
It is configured to be between the plane and the (100) plane. That is, the reason why the diamond tool can perform mirror cutting is that the front flank is appropriately worn and burnishing is performed by the worn surface, and the tool is appropriately worn. Therefore, the wear resistance of the lateral flank 6 of the tool 1 is high, but the front flank 2 has a crystal orientation that easily wears, the tool life is short, and the cutting distance when cutting an Al-Mg alloy is 200 km. It is a degree.

However, in the case of a tool that can be mirror-finished from the beginning of cutting when the tool is not worn (such as a tool whose cutting edge shape is an arc), it is not necessary to wear the tool at the beginning of cutting. Therefore, the inventors conducted an experiment on the correlation between the crystal orientation of single crystal diamond and the tool life in order to improve the tool life. As a result, the rake face and the front flank of the single crystal diamond tool are arranged on the [110] crystal band of the rough diamond or the crystallographically equivalent crystal band, and the front flank is defined as the (011) face ( It has been found that the structure should be located just in the middle of the (100) plane or the crystallographically equivalent plane.

FIG. 3 is a crystal orientation of a rough diamond, and FIG.
Shows the crystal orientation of the diamond tool of the present invention.

The tool 11 includes a front flank 12 and a rake face 13.
Is arranged on the [110] crystal zone 15 of the diamond 10 or a crystallographically equivalent crystal zone, and the crystal orientation of the front flank is between the (011) plane and the (100) plane, or It is configured so that it is equivalent to this.

FIG. 5 shows the tool life when the crystal orientation of the front flank is changed by using the tool of the present invention and the Al--Mg alloy is cut, that is, the cutting distance at which the required surface roughness can be secured. It is a thing.

Therefore, the front flank and the rake face are arranged on the [110] crystal band of diamond or a crystallographically equivalent crystal band, and the crystal orientation of the front flank is (011).
If the tool is configured so that it is between the plane and the (100) plane, or on a plane equivalent to this crystallographically, the tool life will be 80 at the cutting distance.
It can be seen that the distance can be increased from 0 km to 1000 km, which is 4 to 5 times the conventional value.

[0014]

As described above, according to the present invention,
Set the rake face and front flank of the single crystal diamond tool to [11
0] crystal band or a crystallographically equivalent crystal band, and the front flanks are the (011) plane and the (100) plane, or
Since it is configured so as to be between crystallographically equivalent planes, the wear resistance of the diamond tool is improved and a diamond tool having a long tool life can be obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing a crystal orientation of a rough diamond.

FIG. 2 is a diagram showing a crystal orientation of a conventional diamond tool.

FIG. 3 is a view showing a crystal orientation of a rough diamond.

FIG. 4 is a diagram showing a crystal orientation of a diamond tool of the present invention.

FIG. 5 is a diagram showing the relationship between the crystal orientation of single crystal diamond and the tool life.

[Explanation of symbols]

1 ... Diamond tool, 2 ... Front flank, 3 ... Rake surface,
4 ... Single crystal diamond, 5 ... [001] crystal band, 6 ... Side flank, 7 ... Main cutting edge, 8 ... Side cutting edge, 9 ... Side cutting edge, 10 ... Single crystal diamond, 11 ... Diamond tool, 12 ... Front flank, 13 ... Rake surface, 14 ... Side flank, 15 ... [110] crystal zone, 16 ... Main cutting edge,
18 ... Horizontal cutting edge.

Claims (2)

[Claims] 1. A rake face and a front flank of a single crystal diamond tool are arranged on a [110] crystal band or a crystallographically equivalent crystal band, and the front flank is a (011) face and a (100) face.
A diamond tool characterized in that it is arranged between a plane or a plane equivalent to this crystallographically. 2. A rake face and a front flank of a single crystal diamond tool are arranged on a [110] crystal band or a crystallographically equivalent crystal band, and the front flank is a (011) face and a (100) face.
A diamond tool characterized in that it is arranged so as to be exactly in the middle of a plane or a plane equivalent to this crystallographically.