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. 15, 2002
Filed:
Sep. 15, 2000
Masaki Ushio, Kitakyushu, JP;
Masahide Koya, Kitakyushu, JP;
Hiromichi Matsuda, Kitakyushu, JP;
Yoshihiko Yamaguchi, Fukuoka, JP;
Other;
Abstract
A machine tool precision-measuring apparatus comprising: a first linear movement distance-measuring means including a first slide shaft , a first slide bush slidably attached to the first slide shaft , and a first distance sensor for measuring a distance that the first slide shaft relatively travels with respect to the first slide bush ; and, a second linear movement distance-measuring means including a second slide shaft positioned across the first slide shaft , a second slide bush connected to the first slide bush , the second slide bush being slidably attached to the second slide shaft , and a second distance sensor for measuring a distance that the second slide shaft relatively moves with respect to the second slide bush . In use of this apparatus, a spindle of a machine tool to be measured is fixed to the first linear movement distance-measuring means , while the second linear movement distance-measuring means is fixedly positioned on a base , whereby trajectories of the spindle moving in directions of X- and Y-axes are measured. Such a construction provides a machine tool precision-measuring apparatus 10 having a simpler structure, lighter weight, and portability.