Motor control device for implementing power failure protection of machine tool
US9248539B2 · kind B2 · utility
5Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 2014 |
| Grant date | Feb 2, 2016 |
| Priority date | — |
| Expiry date | Jul 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P29/0241
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A control device for a machine tool including a feed shaft motor for driving a feed shaft and a main shaft motor for driving a main shaft is provided with: a determination unit determining whether an operation of the feed shaft motor satisfies a predetermined determination condition; and an excitation command unit outputting an excitation current command to output excitation current larger than excitation current instructed by a master control unit to the main shaft motor, when the determination unit determines that the predetermined determination condition is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.