Numerical control apparatus having a backlash compensation funct

Details Numerical control apparatus having a backlash compensation funct Numerical control apparatus having a backlash compensation funct

1990-12-28

1991-10-22

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Antibacklash systems

318569, 318571, 318573, G05B 1101

Patent

active

050598813

ABSTRACT:
Backlash compensation for a numerical control apparatus. Backlash compensation is intelligently applied based on a judgment as to a change in direction or velocity commanded for a cutting tool, table, or the like. Backlash compensation data is stored into a memory of a numerical control apparatus. A judgement is made as to the necessity of backlash compensation, based on velocity data of the feed mechanism, and deciding whether the feed mechanism is being stopped or reversed. Compensation data is output to a servo drive unit.

REFERENCES:
patent: 3886424 (1975-05-01), Hoshina et al.
patent: 4251761 (1981-02-01), Inoue
patent: 4502108 (1985-02-01), Nozawa et al.
patent: 4868475 (1989-09-01), Rogozinski et al.
patent: 4890046 (1989-12-01), Kurakake et al.

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