JPS61117067A - Round saw for cutting hard substance - Google Patents

Abstract

PURPOSE:To improve economic efficiency and cutting precision by forming a cutting-edge formation part into comb shape by making thinner than the thickness of a disc and attaching minute diamond grains onto the surface of the cutting-edge formation part. CONSTITUTION:A cutting-edge formation part 2 thinner than the thickness of a disc 1 is formed by cutting the front and back surfaces of the disc 1. A comb-shaped part is formed by forming a number of gaps 3 onto the cutting- edge formation part 2, and the connection part 5 with the root parts 4 and 4 in the cutting-edge formation part 2 is formed into circular form. Then, minute diamond grains 6 are attached onto the surface of the cutting-edge formation part 2 through electroplating, and a cutting-edge part 7 is formed. Therefore, the cutting portion of the precious hard substance can be cut little, and the life of a round saw can be prolonged.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is applicable to various semiconductor materials such as /recon, ceramics, tungsten, carbide, J quality materials such as jewel cloth, 1 to 6 4 μm, small ...It is related to the kawari m↓ saw.

(Prior Art) The present inventor has previously developed a technology related to a circular saw for cutting hard materials, which is currently being patented as Japanese Patent Application No. 55F-727202.

In this prior art, a large number of holes are arranged at equal intervals in a blade forming part having an appropriate width from the outer peripheral edge of a circular plate toward the center of the circular plate, and the surface of the blade forming part and the holes are arranged at equal intervals. A circular saw for cutting hard materials having a blade formed by a series of diamond particles bound to the inner circumferential wall, characterized in that the wall thickness of the blade forming part is thinner than the wall thickness of the circular plate. This is a round chisel for cutting hard materials.

(Problems to be Solved by the Invention) According to such conventional technology, diamond particles are bound to the inner circumferential wall of the holes provided in the blade forming portion, that is, pillars of diamond particles are formed. , the diamond fine particles that are bound to the surface of the blade forming part can be firmly bound, and the formed blade can rapidly maintain the cutting effect throughout the whole body.
-1-Force 4 Of course, the holes have the effect of improving the circulation of water or cutting oil and improving the cooling effect.
By making the wall thickness of the blade forming part thinner than the wall thickness of the circular plate, the wall thickness of the blade part can be made thinner without reducing the wall thickness of the entire circular plate. By making the wall thickness thinner than that of the circular plate, the binding area can be increased by the step formed, so the binding force to the blade forming part of the blade part can be increased. Moreover, since the stepped portion can at least withstand the stress applied to the diamond particles near the stepped portion, the durability of the blade portion, that is, the circular saw can be improved.

However, with such conventional technology, it is troublesome to arrange a large number of holes in the blade forming part, and there is a limit to further increasing the binding area by the inner peripheral wall of the holes. Therefore, it is possible to further increase the binding force of the diamond particles that bind to the inner peripheral wall of this hole.
There is also a problem that there is room for improvement in improving the cooling effect by improving the flow of water or cutting oil through the holes formed in the blade.

(Means for Solving the Problems) This invention was made to solve the problems of the prior art, and according to this invention, the center of the circular plate can be The thickness of the blade forming part having an appropriate width is made thinner than the wall thickness of the circular plate, and the blade forming part is formed into a comb tooth shape, and the blade part is formed into the comb tooth shape. Provided is a circular saw for cutting hard materials, characterized in that a blade part is formed by a series of diamond particles bound to the surface of the part.

In the above configuration, the blade forming portion formed into a comb tooth shape can be formed by connecting each root portion with a curved line.

In this case, it is formed into a tooth shape, I6
It is possible to prevent the formation of cracks and breakage at the connecting portions between the root portions of each of the blade forming portions. (Function) The above technical means functions as follows.

First, there is an effect that the thickness of the blade forming portion is made thinner than the thickness of the circular plate, which is the same as in the prior art described above.

That is, by making the wall thickness of the blade portion forming part thinner than the wall thickness of the circular plate, firstly, it is possible to improve the thickness of the circular plate without reducing the overall wall thickness of the circular plate, that is, without reducing the strength of the circular plate. By forming a thin blade part, the cutting width can be reduced as much as possible, and the second
In addition, the binding area of the diamond particles that bind to the blade forming part increases due to the step formed by making the wall thickness of the blade forming part thinner than that of the circular plate. Thirdly, it acts to improve durability by having the stepped portion absorb the stress that the diamond particles in the vicinity of the stepped portion receive due to use.

Next, by forming the blade forming part into a comb tooth shape,
Firstly, the work of forming the blade part into a comb-tooth shape is easier than the work of arranging a large number of holes in the blade forming part as in the prior art. Since the binding area of the diamond fine particles is increased by both left and right sides of the blade forming portion formed in the above, the binding force of the diamond fine particles can be strengthened, and thirdly,
<The gaps between the tooth-shaped blade forming portions serve to improve the circulation of water or cutting oil, thereby further improving the cooling effect.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings (1)
is a circular plate or annular circular plate made of steel plate, etc., and the circular plate (1) has an appropriate width from its outer peripheral edge to the center of the circular plate, and has both front and back sides of the circular plate (1). It has a blade forming part (2) formed so that the wall thickness of the circular plate (1) becomes thinner by cutting.

The blade forming part (2) is formed into a comb tooth shape by forming a large number of gaps (3), and the root part (4) and the root part (4) of each blade forming part (2) are formed into a comb shape. The connection part (
5) is formed in an arc shape.

(6) are diamond fine particles bound in a single layer on the surface of the blade forming part (2) by electroplating, and by binding the diamond fine particles (6), the blade part (7) is bound.
) is formed.

(8) is a step formed by cutting both the front and back surfaces of the circular plate (1), and the step (8) is formed by cutting the lower edge of the blade (9).
) The diamond fine particles (6) are bound together as shown in FIG.

Note that the amount of cutting on both the front and back sides of the circular plate (1), which determines the thickness of the blade forming part (2), is determined by the amount of cutting on both the front and back sides of the circular plate (1), which determines the thickness of the blade forming part (2).
It is sufficient to determine the thickness to be the same as or slightly less than the thickness of
The thickness of the blade portion (7) may be the same or slightly thicker than the thickness of the circular plate (1).

When carrying out the present invention, the thickness of the circular plate (1) can be made from an ultra-thin steel plate, for example, about 0.1 to 1.5 mm, and the diamond particles (6) It can be bonded to the surface of the blade forming part (2) in a multilayered form of two or more layers.

(Effects of the Invention) As explained above, the present invention has the advantage of making the wall thickness of the blade forming part thinner than the wall thickness of the circular plate, thereby achieving the blade forming as described in the section of the above-mentioned effect. The effect is achieved by making the wall thickness of the part thinner than that of the circular plate.

Next, by forming the blade forming part into a comb tooth shape,
Firstly, the work of forming the blade part forming part into a comb tooth shape is easier than the work of arranging a large number of holes in the blade part forming part as in the prior art. The adhesion of diamond particles can be strengthened by both the left and right sides of the blade forming part formed in the shape of a tooth. The cooling effect can be further improved by improving the flow of cutting oil.

In addition, according to the present invention, it is possible to cut expensive hard siliceous material with less cutting allowance, and it is also possible to improve economical efficiency by extending the life of the circular saw, and further improving the cutting accuracy. can be improved.

[Brief explanation of drawings]

The drawings show one embodiment of the nine for cutting hard materials according to the present invention, and FIG. 1 is a front view of the main part with part of the diamond particles of the blade peeled off to expose the blade forming part. Figure 2 is an enlarged sectional view taken along the line A-A in Figure 1, and Figure 3 is an enlarged cross-sectional view of Figure 1.
It is a partially enlarged front view of the figure.

Claims (1)

[Scope of Claims] 1. The thickness of the blade forming portion having an appropriate width from the outer peripheral end of the circular plate toward the center of the circular plate is made thinner than the wall thickness of the circular plate, and the blade forming portion 1. A circular saw for cutting hard materials, characterized in that the blade is formed into a comb-tooth shape, and the blade is formed by bonding a series of diamond fine particles to the surface of the blade-forming part formed in the comb-tooth shape. 2. A circular blade for cutting hard materials according to claim 1, wherein the blade forming portion formed in a comb tooth shape is formed by connecting each root portion with a curved line. child.