Apparatus and method for controlling resonance suppression of machine tool

Abstract

An apparatus for controlling resonance suppression of a machine tool according to the present invention, comprises: a numerical control part; a main operation part; a PLC for executing a control command by means of communication with the numerical control part or the main operation part; a servo drive for executing the control command of the PLC; a servo motor part driven under the control of theservo drive; and a power conversion part for applying electric energy to the servo motor part by being electrically connected to the servo motor part and the servo drive, wherein the power conversionpart adjusts the electric energy applied to the servo motor part according to a signal from the servo drive so as to control resonance suppression according to the operation of the servo motor part.

Description

technical field [0001] The present invention relates to a resonance suppression control device and a resonance suppression control method of a machine tool. More specifically, it relates to transmitting an invalid torque command to a power conversion part through a resonance suppression control part, thereby adjusting the torque to the first servo motor and the second servo motor in the power conversion part. The electric energy applied by the two servo motors can suppress the resonance generated when the two servo motors run in parallel through a power conversion unit and a servo driver, thereby improving the stability and reliability of the machine tool and saving manufacturing and maintenance costs. A resonance suppressing control device and a resonance suppressing control method for a machine tool capable of achieving miniaturization. Background technique [0002] Generally, a machine tool refers to a machine used for the purpose of processing metal / non-metal workpieces ...

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Problems solved by technology

[0018] The first is an attenuation control device and method using an auxiliary inverter and an auxiliary winding, which additionally has a main inverter and an auxiliary inverter to form a structure of a servo motor and an auxiliary winding. However, there are still problems such as increased manufacturing costs and difficulty in mass production

[0019] The second type is an active damping control device and method, which only sets the resonance suppression control through empirical methods, thus cannot flexibly deal with actual resonance generation or many disturbances or variables, and has always been unable to ensure that the servo control device Reliability and stability, only the problem of increased manufacturing costs

[0020] The third type is a vibration reduction device and method using a load oscillation analyzer. It calculates the resonance suppression control by an empirical method, and requires a sensor capable of sensing the vibration phenomenon of the magnetic axis current, thereby increasing the manufacturing cost. increase, and the resonance suppression control is performed without considering the actual resonance generation or the real-time change caused by the operating state of the device, resulting in a significant decrease in accuracy and reliability, and ultimately has the problem of reduced machining precision and reliability of the machine tool

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