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. 23, 2005
Filed:
Dec. 12, 2003
Junichi Hirai, Hitachi, JP;
Hiroshi Arai, Hitachiota, JP;
Tamotsu Harihara, Fujisawa, JP;
Osamu Chiba, Hitachinaka, JP;
Masaaki Takahashi, Hitachi, JP;
Nobuhisa Kanamaru, Hitachi, JP;
Junichi Hirai, Hitachi, JP;
Hiroshi Arai, Hitachiota, JP;
Tamotsu Harihara, Fujisawa, JP;
Osamu Chiba, Hitachinaka, JP;
Masaaki Takahashi, Hitachi, JP;
Nobuhisa Kanamaru, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Software Engineering Co., Ltd., Yokohama, JP;
Abstract
A numerically controlled curved-surface machining unit comprises a component converting matrix·angle-addition value forming function of converting CL (cutter location) data into components on a normal coordinate system on the basis of the machine configuration of the simultaneous multiple-axis control NC machine, a component converting function of converting from the workpiece coordinate system to the normal coordinate system, a function of forming second angles of a second rotary axis on the normal coordinate system, a compensating function of forming a continuous angle distribution from a distribution of the second angles, a function of forming first angles of a first rotary axis on a coordinate system rotated by the second angles at the second rotary axis, a compensating function of forming a continuous angle distribution from a distribution of the first angles, a machine coordinate transformation matrix forming function of obtaining a matrix for converting the tool control point vectors on the workpiece coordinate system into a machine coordinate system by using the first angles and the second angles, and a machine coordinate converting function of converting the tool control point vectors into the machine coordinate system by using the machine coordinate transforming matrix.