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. 17, 2017
Filed:
May. 19, 2015
Dmg Mori Seiki Co., Ltd., Nara, JP;
Katsuhiko Ono, Nara, JP;
DMG MORI SEIKI CO., LTD., Nara, JP;
Abstract
An apparatus includes vibration data obtainerobtaining data on vibration caused by a tool in cutting, a vibration frequency calculatorcalculating a vibration frequency of the tool by analyzing the obtained vibration data, a regenerative chatter detectordetecting whether regenerative chatter occurs by comparing the calculated vibration frequency of the tool with a spindle rotation number, and a spindle rotation controllergradually decreasing or increasing the spindle rotation number when occurrence of regenerative chatter vibration is detected, and a stable rotation number calculatormonitoring variation of the vibration frequency of the tool and determining a spindle rotation number when the variation of the vibration frequency exceeds a predetermined reference value to be a stable rotation number.