Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1990-02-09
1991-10-29
Rachuba, Maurina
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51204, 51267, B24D 510
Patent
active
050604244
ABSTRACT:
A surface grinding apparatus in which a work piece having a plate-like, disc-like, circular or annular shape and having a flat surface and a uniform thickness, which is held by carrier plates between upper and lower horizontal surface tables confronting one another, is pressed against the upper and lower surface tables and the upper and lower surface table and carrier plates are slidably moved by different rotary actions to grind the work piece by sliding friction. In the apparatus, a plurality of resin bond grinding stones are attached to the upper and lower surface tables directly or through attaching plates so that both of the upper and lower acting surfaces constitute the same plane, the grinding stones are defined by a plurality of grooves formed to extend toward the outer side of the surface table from the inner side thereof in a direction opposite to the rotation direction of the surface table and communicate with the outer side of the surface table, and a plurality of radial grooves passing through an imaginary center of the surface table, the width of the grooves is at least 4 mm, the depth of the grooves from the grinding surface to the surface of the surface table is at least 5 mm, and the area ratio of the grinding stone-acting surface to the effective grinding surface is at least 50%.
REFERENCES:
patent: 4918872 (1990-04-01), Sato et al.
Mitsuhashi Kenichi
Sasaki Yasuoki
Sato Takesi
Tomita Yoji
Kanebo Limited
Rachuba Maurina
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