The dynamic performance of the spindle in ultra-precision machine tools under different drive systems

Hailiang Wu; Hui Yang; Chaowei Lu; Yang Zhang

doi:10.1117/12.3009173

29 December 2023 The dynamic performance of the spindle in ultra-precision machine tools under different drive systems

Hailiang Wu, Hui Yang, Chaowei Lu, Yang Zhang

Proceedings Volume 12976, Eighth Asia Pacific Conference on Optics Manufacture and Third International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2023); 129761E (2023) https://doi.org/10.1117/12.3009173
Event: 8th Asia Pacific Conference on Optics Manufacture & 3rd International Forum of Young Scientists on Advanced Optical Manufacturing, 2023, Shenzhen, China

Abstract

In order to analyze the influence of servo drives on the dynamic performance of multi-axis coordinated ultra-precision machine tools, this study employs Simulink modeling and simulation of the control system for a domestic ultra-precision machine tool with gas-static spindle, followed by conducting position control experiments. The dynamic response of the spindle under different drives in ultra-precision machine tools is modeled based on the dynamic characteristic equation of the spindle motor. Waveforms of current, torque, and speed response of the spindle motor under different drives are simulated and analyzed. Control laws between the controlled object and the drive system are derived from the analysis of simulation data. Based on this, a dynamic performance testing platform for the spindle in ultra-precision machine tools is established, with the repeatability of positioning accuracy as the dynamic performance parameter. The linear correlation analysis between the experimental data of repeatability of positioning accuracy and the simulation results is conducted to quantitatively evaluate their correlation. Finally, it is determined that the gas-static spindle under the control of a linear amplifier exhibits the best dynamic performance. Moreover, as the PWM frequency increases under the control of PWM-type drives at 100 kHz, 50 kHz, and 16 kHz, the dynamic performance of the spindle also improves. This study provides reference for the selection of drives in the design and selection stage of control systems for ultra-precision machine tools.

Citation Download Citation

Hailiang Wu, Hui Yang, Chaowei Lu, and Yang Zhang "The dynamic performance of the spindle in ultra-precision machine tools under different drive systems", Proc. SPIE 12976, Eighth Asia Pacific Conference on Optics Manufacture and Third International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2023), 129761E (29 December 2023); https://doi.org/10.1117/12.3009173

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KEYWORDS

Spindles

Autocollimators

Control systems

Design

Optical surfaces

Servomechanisms

Vibration

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