Method of making grinding stones
AssigneesKabushiki Kaisha Komatsu Seisakusho, Noritake Co., Limited, Noritake Diamond Industries Co., Ltd.
InventorTadayuki Ishikawa
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Abstract
Grinding stones, especially resinous and metallic grinding stones which have a controlled distribution of abrasive grains are made by a novel method, in which electrically conductive layers of such pattern which controls sites to be bonded with the grains are formed on the selected surface of a binder sheet, the sheet is immersed in an electrolytic bath containing metallic ions and the grains, the grains are fixedly mounted on the aforementioned sites by metals deposited on the surface of binder sheet with electric paths between the conductive layers and an opposite electrode in the bath, and a plurality of said sheets are placed in layers and warm or hot pressure-molded. When the binder sheet is made from electrically conductive materials, the pattern of the conductive layers is made by masking.
Claims41
A method of making a grinding stone, which comprises:
- forming on a surface of a binder sheet of a desired configuration a pattern of electrically conductive layers for selectively controlling sites on said surface to be bonded with abrasive grains;
- immersing the sheet in an electrolytic bath containing metallic ions and having abrasive grains dispersed therein;
- fixedly mounting on the pattern of electrically conductive layers the abrasive grains by means of metals deposited by electric paths flowing between said conductive layers and an opposite electrode in the bath;
- piling in layers a plurality of the binder sheets mounted with the abrasive grains;
- and
- warm or hot pressure-molding the layers into an integrate of the grinding stone.
A method of making a metalic grinding stone, which comprises:
- forming on a surface of a metallic binder sheet of a desired configuration a desired masking pattern of electrically nonconductive layers for selectively controlling sites on said surface to be bonded with abrasive grains by means of said masking pattern which selectively exposes the metallic surface of the sheet;
- immersing the sheet in an electrolytic bath containing metallic ions and having abrasive grains dispersed therein;
- fixedly mounting on the exposed surface of the sheet the abrasive grains by means of metals deposited by electric paths flowing between the metallic binder sheet and an opposite electrode in the bath;
- piling in layers a plurality of the sheets mounted with the abrasive grains after removing the electrically nonconductive layers from the sheet;
- and
- warm or hot pressure-molding the layers into an integrate of the metallic grinding stone.
Dependencies are inferred from the claim text.