Numerical controlling unit
US6690136B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2002 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Apr 25, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/43068
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The invention relates to a numerical controlling unit that includes: a instructing part that provides a command acceleration for a servomotor, a parameter storing part that stores a threshold parameter about a load of the servomotor, and a load measuring part that measures the load of the servomotor. The load measured by the load measuring part and the threshold parameter are compared by a load comparing part, and an acceleration adjusting part changes the command acceleration for the servomotor based on a result compared by the load comparing part. A controlling part controls the servomotor based on the changed command acceleration. According to the invention, the command acceleration for the servomotor is suitably changed based on the result of comparing the load measured by the load measuring part and the threshold parameter. Thus, it can be prevented that the servomotor is subjected to an overload while using the maximum performance in feeding a work piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.