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:
Dec. 21, 2010
Filed:
Apr. 30, 2007
Teruhiro Nishizaki, Toyama, JP;
Yoshiharu Oyabe, Toyama, JP;
Shiro Murai, Toyama, JP;
Komatsu NTC Ltd., Tokyo, JP;
Abstract
A reference blockattached to a housingis moved together with a main spindleto a measurement start position A, and the reference blockis so moved in a Z-axis direction as to across air injected from an air injection nozzle, so that a thermal displacement of the main spindleis calculated based on change in pressure measured in the movement. The outer circumference of a tool mounted on the main spindleis brought close to a leading end face of the air injection nozzle, and the air is injected to the outer circumference of the tool while rotating the tool at a predetermined position, and the air pressure is measured so that the rotational deflection of the tool is calculated based on the change in the measured pressure.