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:
May. 10, 2011
Filed:
Mar. 19, 2007
Hiromichi Ota, Kariya, JP;
Hiromichi Ota, Kariya, JP;
JTEKT Corporation, Osaka-shi, JP;
Abstract
In a three degrees of freedom parallel mechanism, a spindle head is carried by first and second movable support members to be movable along a Z-axis and to be pivotable along each of A and B-axes. The spindle head is jointed through three rods to drive sliders which are movable along three parallel linear guides secured stationarily. For jointing, there are employed spherical joints and universal joints. Kinematic parameters used in converting each command position of the movable body to target operational positions for three actuators of the Z, A and B-axes are compensated based on inversely converted command positions and inversely converted actually measured positions which have been gathered with the spindle head being located at positions of a suitable number, so that the kinematic parameters can be updated to those newest.