JPH0569330A - Manufacture of electrodeposited grinding wheel - Google Patents

Abstract

PURPOSE:To provide a manufacture of electrodeposited grinding wheel having a long lifetime and the even distribution of grinding particles. CONSTITUTION:In the manufacture of electrodeposited grinding 7 stone, electroplating is performed to the surface of a grinding wheel core 2 made of metal, and the surface of the grinding wheel core 2 is tack-welded with cemented carbide type grinding particles by a tack-welding plating layer 3, which coats only the surface of the grinding wheel core made of metal without coating the surface of the cemented carbide type grinding particles 1. Next, the catalyst is attached to the whole surface of the cemented carbide type grinding particles tack-welded to the grinding wheel core so as to accelerate the electroless plating and the surface of the tack-welding plating layer 3 to activate the surface. Plating finish is performed to the grinding wheel core, to which the cemented carbide type grinding particles are tack-welded, by electroless plating, and the cemented carbide type grinding particles are held on the surface of the grinding wheel core 2 by a plating finish layer 4 for coating the whole surface of the tack-welding plating layer 3 of the grinding wheel core and the cemented carbide type grinding particles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an electrodeposition grindstone.

[0002]

2. Description of the Related Art A conventional method for manufacturing an electrodeposition grindstone is a temporary plating layer 3 by electroplating ultra-hard abrasive grains 1 (diamond grains, CBN grains, etc.) on the surface of a whetstone core 2.
Then, the main plating layer 4 is electroplated to a thickness that fills the height of the ultra-hard abrasive grains by about half (see FIG. 2a), and the ultra-hard abrasive grains are applied to the main-plating layer 4 with a grindstone. It is retained on the surface of the core (see Figure 2b).

Another conventional method for producing an electrodeposition grindstone is to use an ultra-hard abrasive grain 1 (for example, diamond grain, CB).
Nickel coating 5 is applied to N grains (see FIG. 3a),
The ultra-hard abrasive grains 1 are held on the surface of the grindstone core 2 by the main plating layer 4 formed by electroplating (see FIG. 3b).

[0004]

According to the first method for producing an electrodeposition grindstone according to the above-mentioned conventional technique, since the lower half of the superhard abrasive grains is buried in the plating layer, the superhard abrasive grains can be used. The part is limited to the upper half, the life of the electrodeposition grindstone is short,
It is uneconomical.

Also, according to the second method for producing an electrodeposited grindstone, since each super-hard abrasive grain has a nickel coating, a plurality of super-hard abrasive grains are stacked on the surface of the grindstone core while the super-hard abrasive grains are stacked. Is held by electroplating. Therefore, the abrasive grain distribution becomes non-uniform. The present invention provides a method for manufacturing an electrodeposition grindstone that solves the above-mentioned drawbacks of the conventional methods for manufacturing an electrodeposition grindstone.

[0006]

According to the method for producing an electrodeposition grindstone of the present invention, first, the surface of a metal grindstone core is electroplated and the abrasive grains are temporarily attached to the surface of the grindstone core with a temporary plating layer. Then, the surface of the abrasive grains and the temporary plating layer temporarily attached to the grindstone core to accelerate the electroless plating is activated by activating a catalyst on the entire surface, and then the abrasive grains are temporarily attached. The thus-prepared whetstone core is subjected to main plating by electroless plating to hold the abrasive grains on the surface of the whetstone core.

[0007]

[Function] In the temporary plating of the abrasive grains, the surface of the abrasive grains is not covered with the temporary plating layer, but only the surface of the metal grindstone core is coated with the temporary plating layer. It will not be overlapped with the surface of the and will be temporarily attached as a single layer. next,
The surface of the temporarily attached abrasive grains and the temporarily applied plating layer is preliminarily activated by applying a catalyst, so that the subsequent electroless plating of the main plating layer is the temporarily applied plating layer and the abrasive grains of the grindstone core. Abrasive grains are held on the surface of the grindstone core by covering the entire surface.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing an electrodeposition grindstone according to an embodiment of the present invention will be described with reference to the drawings. First, ultra-hard abrasive grains 1, 1 ...
(Diamond particles, CBN particles, etc.) to the surface of the metal grindstone core 2 in the plating solution in the plating tank, or super hard abrasive particles 1, 1 ... (Diamond particles, CBN particles, etc.)
The surface of the metal-made grindstone core 2 on which is dispersed is thinly electroplated. The temporary plating layer 3 thus formed does not cover the surfaces of the super-hard abrasive grains 1, 1 ..., but covers only the surface of the grindstone core 2, and the super-hard abrasive grains 1, 1 on the surface of the grindstone core 2. Are temporarily attached to the surface of the grindstone core 2 (see FIG. 1a).

Next, the grindstone core 2 to which the super hard abrasive grains 1, 1 ... Are temporarily attached is washed with water to wash away the plating solution and the super hard abrasive grains which are not completely attached temporarily, and then to promote electroless plating. The surface of the temporarily attached ultra-hard abrasive grains 1, 1 ... And the temporarily attached plating layer 3 is activated by applying a catalyst over the entire surface. That is, for example, after immersing in stannous chloride, immersing in palladium chloride (see FIG. 1b).

Then, the grindstone core 2 to which the super-hard abrasive grains 1, 1 ... Are temporarily attached is thickly electrolessly plated by electroless plating. As a result, the entire surface of the temporary plating layer 3 and the superhard abrasive grains of the grindstone core 2 is covered with the main plating layer 4, and the superhard abrasive grains 1, 1, ... Are held on the surface of the grindstone core 2 by the main plating layer 4. (See FIG. 1c).

Finally, by truing the grinding surface of the electrodeposition grindstone which is entirely covered with the main plating layer 4 including the ultra-hard abrasive grains 1, 1, ... The main plating layer 4 is removed, and the tips of the super-hard abrasive grains 1, 1, ... Are exposed to complete the electrodeposition grindstone (see FIG. 1d).

[0012]

EFFECTS OF THE INVENTION According to the method for producing an electrodeposition grindstone of the present invention, since super-hard abrasive grains are not plated during temporary attachment,
The ultra-hard abrasive grains are temporarily attached in a single layer without overlapping so that the abrasive grain distribution becomes uniform. Then, the main plating layer holding the ultra-hard abrasive grains reaches the surface of the ultra-hard abrasive grains and the holding power is improved, and the thickness of the main plating layer can be reduced. That is, it is possible to reduce the buried amount of the ultra-hard abrasive grains and increase the usable portion. Therefore, the life of the electrodeposition grindstone is extended, which is economical.

[Brief description of drawings]

FIG. 1 is a process explanatory view of a method for manufacturing an electrodeposition grindstone in an embodiment of the present invention.

FIG. 2 is a process explanatory view of a method for manufacturing an electrodeposition grindstone in the prior art.

FIG. 3 is a process explanatory view of another method of manufacturing an electrodeposition grindstone in the prior art.

[Explanation of symbols]

 1 Ultra-hard abrasive grain 2 Grindstone core 3 Temporary plating layer 4 Plating layer

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shinji Soma 1-1-1, Asahi-cho, Kariya city, Aichi prefecture Toyota Koki Co., Ltd.

Claims (1)

[Claims] 1. A grindstone in which abrasive particles are temporarily attached to the surface of a grindstone core by electroplating, activated by the provision of abrasive particles and the surface of a temporary plating layer, and activated by full-scale catalyst application and abrasive particles are temporarily attached. A method for manufacturing an electrodeposition grindstone, in which abrasive grains are sequentially held on a core by electroless plating.