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. 16, 2012
Filed:
Apr. 26, 2010
Toshiyuki Tamai, Sapporo, JP;
Tomonori Goto, Sapporo, JP;
Toshiyuki Tamai, Sapporo, JP;
Tomonori Goto, Sapporo, JP;
Mitutoyo Corporation, Kawasaki, JP;
Abstract
Form measuring instrument includes: first measuring means which moves contact piece from first position in parallel with second axis to trace surface of workpiece, measure amount of displacement of contact piece, to obtain first profile; second placing means which rotates workpiece about first axis by 90 degrees to place workpiece at second position from first position; second measuring means which moves contact piece from second position in parallel with second axis to trace surface of workpiece, measure amount of displacement of contact piece, to obtain second profile; extremum position calculating means which fits circles to first and second profiles and calculate positions, in direction parallel with second axis, of first and second extremums indicating circles' extremums; and moving means which moves workpiece in direction parallel with second axis and direction parallel with third axis such that positions, in direction parallel with second axis, of first and second extremums become 0.