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:
Jul. 22, 1980
Filed:
Sep. 21, 1977
Applicant:
Inventors:
Toshiaki Watanabe, Kasugai, JP;
Hideo Yuhara, Kasugai, JP;
Assignee:
Okuma Machinery Works Ltd., Nagoya, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318561 ; 318572 ; 29568 ; 318634 ;
Abstract
A system for the automatic management (detection and control) of tool life in a numerically controlled machine tool having means for automatically measuring the dimension of workpieces and correcting the tool offset of a cutting tool depending on wear on the cutting tool. In the system, the mechanical deformation error component (radial deviation component of a spindle of the machine tool) due to heat is removed from the amount of tool offset value (tool feed position compensation) so as to accumulate solely the net tool wear component, and the cutting tool is exchanged when the accumulated value attains a predetermined setting.