JPH06190728A - Manufacture of super-abrasive grain electrodeposited grinding wheel - Google Patents

Abstract

PURPOSE:To provide a manufacturing method for super-abrasive grain electrodeposited grinding wheel, by which an electrodeposited grinding wheel using super-abrasive grains of diamond, cBN, etc., as abrasive grain is manufactured with high precision. CONSTITUTION:At least with one layer of electric plating or non-electrolytic plating, super-abrasive grains 3 are electrodeposited to a base 1 alongside the inner surfaces of a molding die, and thereby a super-abrasive grain electrodeposited grinding wheel is manufactured, wherein the super-abrasive grains 3 are arranged so as to be pressed to the inner wall of the die using the centrifugal force generated by a motor 4 at the time of electrodeposition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a superabrasive grain electrodeposition grindstone for producing an electrodeposition grindstone using superabrasive grains such as diamond or cBN as abrasive grains with high accuracy.

[0002]

2. Description of the Related Art Conventionally, for example, a superabrasive grindstone using superabrasive grains such as cBN or diamond as abrasive grains is
It is used as an effective means for improving the efficiency of grinding, and the amount of its use has been increasing in recent years.

Depending on the method of fixing the abrasive grains of this superabrasive grain grindstone, it is classified into several types, for example, electroplating or electroless plating over one or more layers of superabrasive grains such as cBN or diamond on the base metal. Examples thereof include a whetstone formed by electrodeposition (referred to as a so-called "electrodeposition whetstone").

[0004]

However, since the electrodeposition grindstone according to the prior art has a high holding force for the abrasive grains and good sharpness, it is possible to perform highly efficient grinding, but the height of the abrasive grains is high. There is a problem in that the heights of the cutting edges are not uniform, and as a result, the heights of the cutting edges are not uniform, which makes it impossible to perform highly accurate machining.

In view of the above problems, it is an object of the present invention to provide a method of manufacturing a superabrasive grain electrodeposition grindstone capable of improving the efficiency of grinding.

[0006]

A method of manufacturing a superabrasive grain electrodeposition grinding stone according to the present invention which achieves the above-mentioned object is to dispose at least one layer of electroplating on a base metal by arranging superabrasive grains along an inner surface of a forming die. A method for producing a superabrasive grain electrodeposition grindstone formed by electrodeposition by electroless plating is characterized in that superabrasive grains are arranged by using centrifugal force or magnetic force during electrodeposition.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

Example 1 FIG. 1 schematically shows a side surface (A) and a plane surface (B) of an apparatus for producing a superabrasive grain electrodeposition grindstone according to this example. In the figure, reference numeral 1 is a base metal of a grindstone, 2 is a mold, 3 is superabrasive grains, 4 is an electric motor, 5
Is a plating tank, 6 is a plating solution, 7 is a pump, 8 is a plating solution inlet, 9 is a pipe, 10 is a plating solution return pipe and 1
Reference numerals 1 respectively show filters.

A base metal 1 of a grindstone is fixed to a mold 2 having a required gaviness, and a superabrasive grain 3 of, for example, diamond or cBN is arranged in a part of the mold 2 corresponding to the shape of a workpiece. The base metal 1, die 2 and superabrasive grains 3 are all rotated by an electric motor 4.

On the other hand, an electroless or electrolytic plating solution 6 is stored in the plating tank 5. The plating solution 6 is sucked by the pump 7 to pass through the plating solution introduction port 8 formed in the vicinity of the upper portion of the mold 2 from the plating tank 5 to pass the superabrasive grains 3
After passing through the electrodeposited portion, the pipe 9 is returned to the plating tank 5 through the pump 7 and the plating solution return pipe 10.

In order to prevent the superabrasive grains 3 from flowing out, a filter 11 having pores smaller than the abrasive grain size is arranged below the mold 2.

Then, when the electric motor 4 is rotated, a centrifugal force is applied to the superabrasive grains 3 and the superabrasive grains 3 are pressed against the inner wall having the same shape as the workpiece of the mold 2, and in that state, the base metal 1 is electrodeposited. After this electrodeposition, if the base metal 1 is taken out from the mold 2, a grindstone with high precision and uniform abrasive grain height can be manufactured.

It should be noted that the inner surface of the mold 2 may be coated so that the abrasive grains are not electrodeposited on the mold 2, or the mold may be made of a material such as ceramics or glass.

The electrodeposition grindstone obtained in the present embodiment is a grindstone having the same shape as the required die shape and uniform abrasive grain heights, so that the shape accuracy of the same shape as the inner wall of the die is high and the machining surface Holes with good surface roughness can be processed.

Embodiment 2 FIG. 2 schematically shows an apparatus for producing a superabrasive grain electrodeposition grindstone according to this embodiment. The difference from the device shown in FIG. 1 according to the first embodiment is that the electric motor 4 is removed and the magnet 12 is placed in the plating tank 5 instead.

In this embodiment, iron is coated on the outer surface of the superabrasive grains 3 such as diamond and cBN.

At the time of electrodeposition, the superabrasive grains 3 coated with iron are attracted by the magnets 12 arranged so as to surround the mold 2 in the plating tank 5 and pressed against the inner wall of the mold 2 in this state. Is electrodeposited in.

The obtained grindstone is electrodeposited and fixed to the base metal 1 with the superabrasive grains 3 coated with iron being pressed by the suction action of the grindstone 12 against the inner surface of the mold 30 having the gaviness corresponding to the required machining shape. As a result, the grindstone has the same shape as the required shape and the height of the abrasive grains is uniform, and it is possible to form a hole with good shape accuracy and surface roughness.

[0019]

As described above with reference to the embodiments, according to the present invention, it is possible to provide a grindstone having a high shape accuracy and a uniform grain height, and it is possible to perform machining with a good surface roughness. .

[Brief description of drawings]

FIG. 1 is a schematic view of a method for manufacturing a superabrasive grain electrodeposition grindstone according to a first embodiment.

FIG. 2 is a schematic view of a method for manufacturing a superabrasive grain electrodeposition grindstone according to a second embodiment.

[Explanation of symbols]

 1 unit metal 2 type 3 super abrasive grain 4 electric motor 5 plating tank 6 plating liquid 7 pump 8 plating liquid inlet 9 pipe 10 plating liquid return pipe 11 filter 12 grindstone

Claims (1)

[Claims] 1. A method for producing a superabrasive grain electrodeposition grindstone in which superabrasive grains are electroplated on a base metal along at least one layer of electroplating or electroless plating along the inner surface of a molding die.
A method of manufacturing a superabrasive grain electrodeposition grindstone, which comprises disposing superabrasive grains using centrifugal force or magnetic force.