Electric servo-press, and control device and control method for electric servo press
US8519659B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 8, 2008 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Jul 26, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB30B15/287
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Provided is a low-cost control device for an electric servo press, which is excellent in operability and operation efficiency, capable of abruptly stopping a servomotor in a safe and reliable manner within a short time period in response to an abrupt stop command while avoiding hard actuation of a mechanical brake, even in the case of runaway of the servomotor or the like. An electric servo press performs switching to rotation stop control for a servomotor according to an abrupt stop motion based on an abrupt stop command signal to perform brake actuation to cause a mechanical brake to actually start braking and to forcibly interrupt rotational drive power to the servomotor at a scheduled stop time at which the servomotor is stopped according to the abrupt stop motion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.