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:
Mar. 11, 1985
Applicant:
Inventors:
Akira Naito, Kanagawa, JP;
Tetsuji Kodama, Kanagawa, JP;
Hideki Tsuruse, Kanagawa, JP;
Hironobu Tsutsumi, Kanagawa, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318568 ; 318640 ;
Abstract
A position control method for aligning a workpiece in a machining apparatus. An alignment pattern, such as a diamond, is provided on the surface of the workpiece. The alignment pattern and the surrounding region are sensed by an image pickup television camera, the output of which is converted to binary form. From the binary data, the central point of the pattern is calculated. The difference between this central point and a reference point is then determined, and the result used to control the position of the workpiece via a positioning mechanism.