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.

Date of Patent:
Sep. 04, 2018

Filed:

Jul. 22, 2016
Applicant:

Fanuc Corporation, Yamanashi, JP;

Inventors:

Yuuki Morita, Yamanashi, JP;

Tadashi Okita, Yamanashi, JP;

Daisuke Tajima, Yamanashi, JP;

Assignee:

FANUC CORPORATION, Yamanashi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23G 1/32 (2006.01); G05B 19/416 (2006.01); B23G 1/16 (2006.01); G05B 19/414 (2006.01);
U.S. Cl.
CPC ...
B23G 1/32 (2013.01); B23G 1/16 (2013.01); G05B 19/416 (2013.01); G05B 19/4141 (2013.01); G05B 2219/49108 (2013.01); G05B 2219/50232 (2013.01);
Abstract

A controller for controlling a synchronized operation of spindle and feed axes. A spindle-axis control section includes an initial-motion control section for making a spindle axis perform an accelerated rotation at maximum capacity from a process start position; a maximum-acceleration detecting section for detecting a maximum acceleration of the spindle axis; a residual rotation-amount detecting section for detecting a residual rotation amount of the spindle axis; a current-speed detecting section for detecting a current speed of the spindle axis; a positioning-motion control section for making the spindle axis perform a decelerated rotation so as to reach the target thread depth after the accelerated rotation; and an overshoot detecting section for detecting an overshoot of the spindle axis during the decelerated rotation.


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