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:
Jan. 25, 1994
Filed:
Jun. 24, 1991
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
36447429 ; 3644742 ; 36447424 ;
Abstract
An object of the present invention is to provide a practical method for machining a sculptured surface. One of the characteristics of a concrete method for machining a sculptured surface so as to accomplish the object is that a patch table of a sculptured surface as surface information data for sculptured surface machining is configured so that a tool path can be generated using the inverse offset method for various surfaces such as a Bezier surface or a Ferguson surface and another characteristic is that over cutting during tool path generation on the basis of the inverse offset operation can be corrected.