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:
Oct. 21, 1986
Filed:
Sep. 28, 1984
John K Hinds, Scotia, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
Constructive solid geometry is a technique of representing parts by adding and subtracting a set of primitive shapes. Automatic tool paths to machine a part with a rotating cutter are generated by taking the constructive solid geometric description of the part and replacing every primitive shape by an offset primitive, larger or smaller than the part by the cutter radius. A planar section slice of the offset part has the property that the center of the milling cutter will traverse this section curve and form the original part without gouging. To machine efficiently, a series of parallel slicing planes are taken from top to bottom through the offset part. For each section curve, numerical control machine code is generated to direct the cutter to follow that path, and the part is automatically machined. The method applies to both rough and finish cutting.