Numerical control apparatus having a backlash compensation function and method thereof
US5059881A · kind A · utility
20Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Dec 28, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/41085
- WIPO fieldControl
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.