Patent · US Expired

Guiding and stressing an elongated, stretched, renewable electrode in electro-erosive machining

US4242556A · kind A · utility

9Cited by

6References

6Claims

0Family size

Assignee

A.G. fur Industrielle Elektronik AGIE · CH

Inventors

Werner Ullmann · Locarno, CH
Bernd Schumacher · Niederalteich, DE
Herbert Ruh · Locarno, CH
Beat Kilcher · Bosco Luganese, CH

Key dates

Filing date	Apr 13, 1978
Grant date	Dec 30, 1980
Priority date	—
Expiry date	Apr 13, 1998

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H59/388
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

To provide constant tension on an electro-erosive electrode machining wire, tape or ribbon stretched in a working path between advancing rollers and pulling rollers, a tension loading arrangement, for example weights, springs, or the like, are applied to the wire to maintain the tension thereof at a constant value. The deflection of the wire, due to elongation thereof as a result of heating, differences in manufacturing technologies and the like, is sensed and fed back to the motors driving the advancing and pulling rotors to maintain the tension, as controlled by the motor torques and speeds at a uniform value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.