Chuck with angular compensation
AssigneeForkardt Schweiz AG
InventorErwin Bohler
Life of this patent
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Abstract
The chuck comprises jaws which, in addition to their radial movement, can each swivel around an axis essentially parallel to the axis of the chuck, and where this axis glides in a radial slideway of the chuck in order to allow said radial movement. This swivelling action ensures that the working surfaces of the jaws or of shoes sitting on them which are adapted to the outer shape of the workpiece will sit evenly on the workpiece even when the latter is mounted between centers and as a consequence its rotation axis does not coincide exactly with that of the chuck.
Claims11
Chuck for a machine tool, characterized by jaws with two degrees of freedom relatively to the main body of the chuck, a translatory degree of freedom in an essentially radial direction with respect to the rotation axis of the chuck, and a limited rotational degree of freedom around a swivel axis essentially parallel to the rotation axis of the chuck, which swivel axis follows the radial displacement of the corresponding jaw, each jaw comprising a sliding head with a support surface that is at least partially rotationally symmetric with respect to the swivel axis and glides in a radial slideway of the chuck.
Dependencies are inferred from the claim text.