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:
Sep. 11, 2007
Filed:
Apr. 05, 2006
Toshiaki Otsuki, Hino, JP;
Soichiro Ide, Fujiyoshida, JP;
Takafumi Sasaki, Yamanashi, JP;
Fanuc Ltd, Yamanashi, JP;
Abstract
A work is installed on a table of a machine tool, and the coordinate system on the work is (X', Y′, Z′). Each three points on respective three faces of the work, which are orthogonal to one another, A, B, C, D, E, F, G, H and I, are detected with a touch probe. From three points on the same plane, each of three formulas of planes which lies on the three points, respectively, are obtained. A position O′ (X, Y, Z) of a point where the three plane intersect with one another is obtained. This position is a parallel translation error. From these three plane formulas, points on the X′, Y′ and Z′ axes each being distant from the position O′ by the length L are obtained. Rotation matrices are obtained from the respective points, position O′ (X, Y, Z), and L. Rotary direction errors are obtained using the rotation matrices. In this manner, a work location error which is composed of the three-dimensional parallel translation error and three-dimensional rotary direction errors is obtained.