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:
Mar. 08, 1994
Filed:
Jul. 11, 1991
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
36447426 ; 36447424 ; 36447429 ; 364191 ;
Abstract
A curve extracting apparatus for extracting curves such as closed loops, open loops and hole groups from drawing data prepared with a CAD system, and an NC programming system for forming NC programs by directly utilizing curves which are extracted by the curve extracting apparatus. With such apparatus and system, it is unnecessary to perform complicated operations such as a drawing data reading operation, a coordinate calculating operation and a numerical data inputting operation and the occurrence of errors can be eliminated, and the drawing data prepared with a CAD system can be directly utilized to form an NC program.