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:
Aug. 24, 1999
Filed:
Jun. 09, 1997
Helmut Friedrich Link, Aichwald, DE;
Index Werke GmbH & Co. KG Hahn & Tessky, Esslingen, DE;
Abstract
A work spindle for a machine tool. The work spindle has a spindle guard tube, a clamping arrangement, a clamping force generator, which is arranged on the spindle guard tube and operates the clamping arrangement, and which has at least one first cylinder chamber enclosed by a first cylinder housing and a first piston, in such a way that a large band width of different clamping forces may be generated simply. The clamping force generator has a second cylinder chamber enclosed by a second cylinder housing and a second piston. Additionally, for operation of the clamping arrangement, both cylinder chambers are always subjected to a pressurized medium. Furthermore, to generate different clamping forces, the clamping force generator is switchable over from a first working mode, in which at least the first piston operates the clamping arrangement, into a second working mode, in which at least the second piston operates the clamping arrangement.