Title:
COPYING-SPEED CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/1991/010536
Kind Code:
A1
Abstract:
A copying-speed control method for an NTC copying which performs profile control of one axis and numerical control of the other two axes. In the servo loop of the numerical control axis, an override control circuit (23) is provided between an error counter (22) and a D/A converter (16x). When a displacement changes abruptly the override value of the override control circuit is changed to stop or reduce the servomotor output of an error quantity in the error counter (22). Thereby, the biting at sudden changing parts of a model is reduced.
Inventors:
ARAMAKI HITOSHI (JP)
OKAMOTO TETSUJI (JP)
OKAMOTO TETSUJI (JP)
Application Number:
PCT/JP1991/000021
Publication Date:
July 25, 1991
Filing Date:
January 11, 1991
Export Citation:
Assignee:
FANUC LTD (JP)
International Classes:
B23Q33/00; B23Q35/123; G05B19/18; G05B19/21; (IPC1-7): B23Q35/12
Foreign References:
| JPS6224947A | 1987-02-02 | |||
| JPH02205442A | 1990-08-15 | |||
| JPH0626663B2 | 1994-04-13 | |||
| JPS6071147A | 1985-04-23 |
Other References:
See also references of EP 0463175A4
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