JPH09117865A - Electro-deposited grinding wheel and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electro-deposited grinding wheel easy to form a pattern shape strict in dimensional precision favourably in repeatability and to be a product with a masking left as it is after pattern formation. SOLUTION: It is an electro-deposited grinding wheel a surface of a base metal 1 of which is masked in an insulating material ink by screen printing and on a part not masked of which abrasive grains 3 are electrically deposited, and it can be used with a masking layer consisting of an insulating material ink 6 layer without removing but as it is left. Additionally, the electro-deposited grinding stone is manufactured by masking the surface of the base metal in the insulating material ink 6 by screen printing, drying and removing an organic solvent in the insulating material ink and electrically depositing the abrasive grains 3 on the part which is not masked after printing the insulating material ink 6.

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 an electrodeposition grindstone in which diamond and CBN abrasive grains are fixed by plating or the like, and more particularly to an electrodeposition grindstone in which the surface of a base metal is masked with an insulating ink and a method for producing the same. Regarding

[0002]

2. Description of the Related Art Conventionally, as a method of manufacturing a grindstone having a pattern-shaped abrasive grain adhered portion on the surface of an electrically conductive base metal, an insulating masking tape is cut and stuck to the base metal or an insulating paint is applied to form a pattern-shaped base There is a method of exposing the gold surface and fixing the abrasive grains only to the exposed portion by electroplating. However, it is difficult to manufacture a complicated pattern shape by this method.

Therefore, as a method for solving this problem,
For example, Japanese Patent Application Laid-Open No. 57-66864 discloses a method of forming a pattern shape by a transfer method, and a method of sticking a transfer paper which is already formed in the pattern shape on the surface of a base metal.

FIG. 2 is a process diagram of a conventional electrodeposition grindstone manufacturing method. In FIG. 2, the base metal 1 is masked with an insulating tape or a transfer paper 2 and the abrasive grains 3 are nickel-coated on the unmasked portion. After being fixed by the plating layer 4, the masking material 2 is peeled off to form the decorative plating layer 5 on the surfaces of the nickel plating layer 4 and the base metal 1.

[0005]

However, the above-mentioned 3
It is impossible to make products in the masked state with the masking method of the kind. In other words, when the masking tape is cut and pasted, the appearance is unsatisfactory, and when the insulating coating is applied, the coating surface becomes uneven and becomes uneven, and in the transfer method, the adhesion of the transfer paper to the base metal is weak and it easily peels off. It may peel off partially.

Therefore, since the adhesiveness of the masking tape and the transfer paper to the base metal is weak and the tape is easily peeled off, it is impossible to use the product as it is. Had to do.

Further, in masking, when the masking tape is cut and stuck, the transfer paper is stuck, and the like, it is difficult to reproduce the same shape due to the deviation of the sticking position and the dimensional deviation.

For the above reasons, when the masking method is used, the masking layer is removed after the abrasive grain fixing step, and the surface of the base metal is exposed at the removed traces, which enhances aesthetics and commercial value. And including the meaning of rust prevention,
After pretreatment such as degreasing and pickling, it is necessary to apply decorative plating to the whole grindstone.

Further, a pattern shape having strict dimensional accuracy is difficult to create by cutting and pasting, and there is a point that the transfer method is unsuitable due to misalignment of transfer paper.

Therefore, the present invention provides an electrodeposition grindstone which can be easily formed with high reproducibility in a pattern shape having strict dimensional accuracy, and which becomes a product with masking left after pattern formation, and a method for manufacturing the same.

[0011]

DISCLOSURE OF THE INVENTION The present invention is an electrodeposition grindstone in which the surface of a base metal is masked with an insulator ink by screen printing, and abrasive grains are electrodeposited on the unmasked portion. The masking layer consisting of is not removed but becomes a commercial product. This masking layer plays the role of a decorative plating layer for rust prevention and aesthetic enhancement which was carried out by the conventional method.

[0012]

1 is a process diagram of a method for producing an electrodeposition grindstone according to the present invention, in which an insulator ink 6 is screen-printed on a surface of a base metal 1 to mask it.

The insulating ink 6 to be used is made of epoxy-based, phenol-based or rubber-based resin having chemical resistance (acid resistance, alkali resistance). Further, the color of the insulating ink 6 can be appropriately selected, and the display of the product name or the like can be screen printed in a different color on the screen-printed insulating ink 6.

With respect to the thickness of the insulator ink 6, the present invention produces a product with the screen-printed insulator ink layer left. Therefore, in the case of a grindstone, if the ink layer thickness is too thick, it becomes a work material during grinding. The masked layer comes into contact, the ink layer is scraped off, the cut powder adheres to the grinding surface, or the gap between the work material and the work material is narrow, resulting in poor discharge of the work material and clogging. It adversely affects the performance of the whetstone. Therefore, the thickness of the insulator ink is preferably 1/2 or less of the average particle size of the abrasive grains used, and conversely, if it is too thin, plating will be deposited on the masking portion during the abrasive grain fixing step (plating deposition step). Therefore, the lower limit must be 1/5 or more of the average grain size of the abrasive grains used in view of the current density.

Further, after screen-printing the insulating ink 6, in order to increase the adhesion strength of the insulating ink, the organic solvent which is a component of the insulating ink is dried and removed at 100 ° C. or lower, and then baked at 100 to 200 ° C. .

After masking with the insulating ink 6, the abrasive grains 4 are applied to the nickel plating layer 4 on the unmasked portion.
To stick.

[0017]

【The invention's effect】

(1) The present invention has a high adhesion of the screen-printed insulating ink layer to the base metal, and can be made into a product with the insulating ink-remaining layer left.

(2) In the present invention, work steps such as stripping of the masking tape and decorative plating can be omitted as compared with the conventional method, so that the work can be simplified and rationalized.

(3) Since the present invention uses screen printing, the masking of the same pattern shape is excellent in reproducibility.

(4) The present invention can improve the aesthetic appearance and the commercial value by changing the color of the insulating ink.

[Brief description of the drawings]

FIG. 1 is a process diagram of a method for producing an electrodeposition grindstone according to the present invention.

FIG. 2 is a process diagram of a method for producing an electrodeposition grindstone by a conventional method.

[Explanation of symbols]

 1 Base metal 2 Masking tape (insulator tape, transfer paper) 3 Abrasive grains 4 Ni plating layer 5 Decorative plating layer 6 Insulator ink

Claims (2)

[Claims] 1. An electrodeposition grindstone, characterized in that the surface of the base metal is masked with an insulator ink by screen printing, and abrasive grains are electrodeposited on the unmasked portion. 2. The surface of a base metal is masked with an insulating ink by screen printing, the organic solvent in the insulating ink is dried and removed, the insulating ink is baked, and then abrasive grains are electrodeposited on the unmasked portion. A method of manufacturing an electrodeposition grindstone, which comprises: