Patent ID: 9588512
Date: 2017-03-07
CPC Classifications: G05B

Claim:
1. A method, comprising: setting revolutions per minute in real time of a rotating cutting tool for use with a machine tool, the setting of revolutions comprising: while a cutting processing is performed on a workpiece by the rotating cutting tool, calculating a chatter threshold index Th value at a ratio of a chatter vibration size M in a case in which the chatter threshold index Th reaches a set value of the chatter threshold index Th, determining the case as a symptom of abnormal chatter vibration; calculating a recommended revolutions per minute of the tool, wherein the recommended revolutions per minute of the tool is calculated by Equations 3 and 4, wherein Equation 3 is Ω adjusting the revolutions per minute of the rotating cutting tool to the recommended revolutions per minute of the rotating cutting tool in real time.