Feed control system with a safety device
US4580085A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1985 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Apr 17, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/49162
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a feed control system, a feed controller controls a servomotor in such a manner as to reduce the difference between an objective position and a present position of a movable body. An interference detection circuit coupled to the feed controller detects the occurrence of an interference between the movable body and an obstruction when feed movement of the movable body is discontinued nevertheless the difference between the objection and present positions does not reach zero. A digital computer is coupled to an objective position counter provided in the feed controller to selectively set therein objective positions to which the movable body is to be positioned successively. The digital computer, when receiving a signal from the interference detection circuit, sets the objective position counter with data for moving the movable body a predetermined amount in a direction opposite to that wherein the movable body was moved before the occurrence of an interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.