Machine tool having operation control
US3958479A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1975 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Jan 24, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/4645
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A machine tool which is operable on a workpiece, particularly a stamping or nibbling machine, comprises a movable electrically conductive work tool which is connected in a circuit along with a workpiece. The circuit includes a relay having a switch which is closable to energize a control device such as a drive motor for the feed of the workpiece. The relay is controlled by a contact which is effected when the tool contacts the workpiece to energize the relay and, for example, to open the contact in the control circuit, to stop the control operation. The relay advantageously includes a spring to return this contact switch to a closed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.