Patent · US Expired

Device for holding workpieces during machining operations

US4671520A · kind A · utility

2Cited by

4References

18Claims

0Family size

Assignee

Buderus Aktiengesellschaft · DE

Inventors

Jurgen Schreiber · Wetzlar, DE
Albrecht Guntram · Wetzlar, DE

Key dates

Filing date	Nov 25, 1985
Grant date	Jun 9, 1987
Priority date	—
Expiry date	Nov 25, 2005

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T279/3493
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

It has been hitherto customary durig machining of workpiece, such a grinding of gear wheels, to slip a roller cage over the gear wheel. The chuck jaws of the chuck then hold the workpiece by way of the rollers in a roller cage. The time concuming operation is made superfluous by a holding ring which is mounted in the chuck. The holding ring has openings near the chuck jaws, and also has in this region fixedly installed roller-cage-type segments. Input guides at the holding ring allow quick, safe and secure exchange of the workpieces.

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