Patent · US Expired

Hydraulic clamping device

US5125776A · kind A · utility

14Cited by

4References

17Claims

0Family size

Assignee

Albert Schrem Werkzeugfabrik GmbH · DE

Inventors

Peter Muller · Munich, DE
Ulrich Bauer · Gerlingen, DE
Monika Schrem · Giengen an der Brenz, DE

Key dates

Filing date	Dec 18, 1990
Grant date	Jun 30, 1992
Priority date	—
Expiry date	Dec 18, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T409/30952
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hydraulic clamping device for the axial clamping of bodies of rotation, especially tools, onto a revolving mandrel is provided. It has a base body fixed to a mandrel and a rotary piston which is suspended in a floating manner inside the base body and is axially slidable relative to the base body via a closed-circuit hydraulic system and setscrews. The tool is tightly clamped in an axial direction. In order to improve the axial rigidity of the hydraulic clamping device, to provide a fast and directed adjustment of the concentricity during the clamping of the tool inside the device and to provide a radial freedom of play during operation, a sleeve fastened to the mandrel is provided to which the base body is attached. The sleeve is equipped with an elastic flange, a first face of which is engaged by the rotary piston and a second face of which is abuttable against said tool.

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