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.

Date of Patent:
Mar. 06, 1990

Filed:

May. 04, 1988
Applicant:
Inventor:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ; B23Q / ;
U.S. Cl.
CPC ...
82-111 ; 82162 ; 82164 ;
Abstract

A fixing apparatus (3) for fixing a workpiece (2) to be machined comprises at least two jaws (6,7), which are individually adjustable and are preferably adapted to be fixed in position. In order to permit a workpiece (2) to be fixed exactly in a desired position, to avoid errors, to permit both centering and flat-and sag-compensating clamping sequences to be performed, and to permit various clamping sequences to be performed, at least one of the jaws (6, 7) has a position pickup (11, 12) associated with it, which detects the instantaneous position of the associated jaw (6, 7) and delivers corresponding signals to a controller (13), which in accordance with programs stored in the controller generates displacement signals which depend on the position signals and represent the distances over which the jaws (6, 7) are to be displaced and delivers said signals to actuators (8, 9) for displacing said jaws (6, 7) over said distances.


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