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. 02, 2007
Filed:
Mar. 06, 2006
Yukihiro Sakata, Kawasaki, JP;
Fumihiro Takemura, Kawasaki, JP;
Yukihiro Sakata, Kawasaki, JP;
Fumihiro Takemura, Kawasaki, JP;
Mitutoyo Corporation, Kawasaki-shi, JP;
Abstract
The invention provides an aspherical workpiece leveling method for leveling an aspherical workpiece mounted on a tilt correction table. The method includes three-dimensionally measuring a surface of the aspherical workpiece containing an extreme value; deriving a secondary curved surface from the obtained three-dimensionally measured values to obtain an extreme value of the secondary curved surface as a temporary extreme value; obtaining three-dimensionally measured values at three or more points from the surround about the obtained temporary extreme value; obtaining a plane defined by the obtained three-dimensionally measured values at three or more points; and adjusting the tilt correction table for leveling the obtained plane.