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. 26, 1997
Filed:
Apr. 28, 1995
Kazuo Nagashima, Shizuoka-ken, JP;
Toshiba Kikai Kabushiki Kaisha, Tokyo-to, JP;
Abstract
A method of correcting an error in mounting a workpiece includes a step of determining a position and a direction of a tool on a coordinate system of the workpiece on the basis of command numerical values, a step of correcting an error in a preset quantity in every direction, a step of obtaining quinaxial coordinate values satisfying the position and the direction of the tool as a result of performing the error correction and a step of giving a numerical control command to a driving unit of each axis on the basis of the quinaxial coordinate values. An apparatus for correcting an error in mounting a workpiece includes an attitude detecting unit, a correcting unit, a coordinate calculating unit and a command unit that correspond to those steps, respectively. The machining can be thereby effected by correcting mounting errors that are not confined to the three X-, Y- and Z-directional position parallel movements in simultaneous quinaxial control machining without requiring a machining program.