Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1991-10-02
1994-05-31
Rachuba, M.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
5116577, 51 34C, 36447406, 82 11, 82118, B24B 4900
Patent
active
053157893
ABSTRACT:
A numerically controlled machine tool such as a roll grinder grinds a workpiece into a roll shape by rotating the workpiece about its own axis at a prescribed speed, and moving a grinding tool in radial and axial directions of the workpiece. The machine tool has a first motor for rotating the grinding tool about its own axis and a second motor for moving toward and away from the workpiece in the radial direction thereof. The machine tool also includes a detector for detecting a drive current supplied to the first motor, and a control unit for comparing the value of the drive current detected by the detector and a preset current value and for controlling the second motor based on the result of comparison.
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patent: 4214309 (1980-07-01), Koide et al.
patent: 4238205 (1980-12-01), Geiger et al.
patent: 4484413 (1984-11-01), Yamamoto et al.
patent: 4564914 (1986-01-01), Ballough et al.
patent: 4648025 (1987-03-01), Yoneda et al.
Kabushiki Kaisha Toshiba
Rachuba M.
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