Hydraulic clamping device

Details Hydraulic clamping device Hydraulic clamping device

1990-12-18

1992-06-30

Bishop, Steven C.

Gear cutting, milling, or planing

Milling

With cutter holder

279 401, 403 15, 403 31, B23F 2312

Patent

active

051257769

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.

REFERENCES:
patent: 3033597 (1962-05-01), Miller
patent: 3242818 (1966-03-01), Kastler
patent: 4697966 (1987-10-01), Baur
patent: 4953877 (1990-09-01), Slachta et al.

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