The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 1990
Filed:
Aug. 04, 1988
Karl Pesch, Dillingen/Donau, DE;
Gunter H Rohm, 7927 Sontheim, DE;
Other;
Abstract
An operation control device is provided for a chuck by which the rotary drive for the chuck is disengaged when the clamping motion leading to clamping of the workpiece in the chuck has not been provided or is not sufficient. The clamp jaws of the chuck are adjustable by a drive member guided axially in the chuch body which is connected to a clamping piston. The operation control device comprises a control piston which is acted on by a compressed medium against the force of a restoring spring and is locked by the drive member against the sliding caused by the compressed medium in a locked position disconnected from the rotary drive if the drive member is positioned in the end safety region of its axial displacement. Because of that, it is possible by displacement only of a control piston to control both the chuck displacement and also the clamping force for clamping the workpiece and thus to take care of the situation in which a reliable clamping of the workpiece is no longer possible at the end of the chuck displacement by a chuck interior displacement limit.