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. 19, 1986
Filed:
Jul. 14, 1983
Wilhelm Steinhart, Friedberg, DE;
Rudolf Mitschele, Augsburg, DE;
Kuka Schweissanlagen & Roboter GmbH, Augsburg, DE;
Abstract
For the controlled slowdown of a translatory or rotary machine part to arrest same in a predetermined stop position of an entrained load, the part being driven by an electric motor against a countervailing torque, a trial run is used with a constant motor torque (less than the countervailing torque) to determine a deceleration characteristic under conditions duplicating those of a subsequent production run. The deceleration characteristic is registered in the form of discrete positional values detected at successive instants, these values being stored in a memory for consecutive readout at corresponding instants in a production run and comparison with actual load positions to provide an error signal for the adjustment of the motor torque. A specific embodiment serves to control the final position of a rotary workpiece holder in friction welding. ,