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:
Feb. 24, 1987
Filed:
Jan. 28, 1985
Applicant:
Inventor:
Karl Hiestand, Pfullendorf, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
279111 ; 279 / ;
Abstract
To check the flat or planar clamping of a workpiece in the jaws of a chuck, and/or to measure the respective clamping jaws, a pressure responsive signal transmitter is provided in at least one of the contact surfaces of a clamping jaw 6 or in an elastically deformable zone, which can be electrically coupled to measuring instruments provided outside the chuck body, in order to evaluate the signals. This makes it possible to find out, before starting the operation of a machine tool, whether the workpiece is correctly clamped, and with what clamping force.