Clamp device for axially clamping a tool, particularly a disc
First Claim
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1. A clamp device for axially clamping a tool, in particular a disc, to a flange of a driven spindle, said clamp device comprising a clamp nut to be secured to the driven spindle;
- a clamp disc arranged between said clamp nut and the tool for pressing the tool to the flange;
axial supporting means for securing said clamp disc to said clamp nut for joint axial movement thereof, said axial supporting means including a plurality of annular segments having an outer peripheral surface, a track on said outer peripheral surface, and a wedge-shaped cross-section, said clamp nut and said clamp disc having respective frustoconical supporting surfaces for engaging said annular segments;
an operating member located between said clamp disc and clamp nut and comprising a ring rotatable relative thereto and having an inner track;
a plurality of rolling members displaceable in said inner track of said ring and said outer tracks of said annular segments;
a plurality of drivers associated with said rolling members, supported on said ring, and projecting into tracks of associated rolling members for enabling displacement of said rolling members in a release direction upon rotation of said ring in a predetermined direction to relieve said annular segments radially and said clamp disc axially, at least one of said clamp disc and clamp nut having a plurality of stops extending transversely into said tracks; and
spring means for biasing said ring in a direction opposite to the predetermined direction of rotation thereof so that said drivers press associated rolling members against associated stops in a direction opposite to the release direction, said ring member having in a region of said inner track thereof a plurality of radial depressions into which said rolling members fall upon being displaced upon rotation of said ring in a predetermined direction.
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Abstract
A clamp device for clamping a disc tool to a driven spindle and comprising a clamp nut, a clamp disc, and an arrangement for connecting the clamp disc to the clamp nut and which arrangement includes a ring having an inner track in which a plurality of rolling members are displaceable and are spring biased against respective stops projecting from at least one of the clamp nut and the clamp disc, and which is rotatable against a spring force to release the clamp disc from the clamp nut.
26 Citations
20 Claims
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1. A clamp device for axially clamping a tool, in particular a disc, to a flange of a driven spindle, said clamp device comprising a clamp nut to be secured to the driven spindle;
- a clamp disc arranged between said clamp nut and the tool for pressing the tool to the flange;
axial supporting means for securing said clamp disc to said clamp nut for joint axial movement thereof, said axial supporting means including a plurality of annular segments having an outer peripheral surface, a track on said outer peripheral surface, and a wedge-shaped cross-section, said clamp nut and said clamp disc having respective frustoconical supporting surfaces for engaging said annular segments;
an operating member located between said clamp disc and clamp nut and comprising a ring rotatable relative thereto and having an inner track;
a plurality of rolling members displaceable in said inner track of said ring and said outer tracks of said annular segments;
a plurality of drivers associated with said rolling members, supported on said ring, and projecting into tracks of associated rolling members for enabling displacement of said rolling members in a release direction upon rotation of said ring in a predetermined direction to relieve said annular segments radially and said clamp disc axially, at least one of said clamp disc and clamp nut having a plurality of stops extending transversely into said tracks; and
spring means for biasing said ring in a direction opposite to the predetermined direction of rotation thereof so that said drivers press associated rolling members against associated stops in a direction opposite to the release direction, said ring member having in a region of said inner track thereof a plurality of radial depressions into which said rolling members fall upon being displaced upon rotation of said ring in a predetermined direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- a clamp disc arranged between said clamp nut and the tool for pressing the tool to the flange;
Specification