Haas Automation, Inc.

Barry D Johnson

German M Chistokhodov

Joseph V Soliman

Razmik G Petrossians

Robert Weston

Puneet Gupta

A method of detecting machine tool vibration is provided. The method includes receiving, from a sensor arranged in a machine tool, motion data measured along an axis. The method also includes comparing the motion data against a first threshold. The method also includes adjusting a counter if the motion data has a magnitude greater than the first threshold. The method also includes generating an alarm if the counter is greater than a second threshold.

Machine tool with vibration detection

A method for decelerating a motor in a computer numerical controlled machine tool is provided. The method includes calculating a present rate of deceleration D, for a motor of a motor drive system, based on a present speed Sof the motor, a reference speed Sof the motor, and a reference rate of deceleration Dof the motor. The method also includes decelerating the motor from Saccording to D. The motor drive system comprises a maximum power rating that defines a maximum power, generated by the motor while decelerating, that can be dissipated without overloading the motor drive system. Dis a rate of deceleration such that power, generated by the motor while decelerating from Saccording to D, is equal to the maximum power rating. Power, generated while decelerating the motor from Saccording to D, is equal to or less than the maximum power rating.

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Santa Rosa Valley, CA, United States of America

Barry D Johnson