首页|Dynamic performance of a long-stroke fast tool servo system

Dynamic performance of a long-stroke fast tool servo system

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A fast tool servo (FTS) system can be used to efficiently manufacture optical freeform surfaces. This paper investigates the dynamic perfor-mance of an FTS system driven by a voice coil motor and guided by air bearings. A simulation model and testing platform are developed to evaluate the load capacity and stiffness of the air bearings. The mechanical dynamic performance of the designed FTS, including modal and harmonic analyses, is assessed using finite element analysis. A nonlinear relation between air-bearing stiffness and mechanical bandwidth is obtained. The working dynamic performance is tested through system runout, tracking performance, and closed-loop tests. Quantitative relations between air-bearing stiffness and the mechanical and working bandwidths are established and analyzed. Machining experiments verify the feasibility of the FTS system with 31.05 N/μm stiffness air-bearings.

FTSDynamic performanceAir bearingStiffness

Zheng Gong、Dehong Huo、Zengyuan Niu、Wanqun Chen、Kai Cheng

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School of Engineering,Newcastle University,Newcastle upon Tyne NE17RU,United Kingdom

UPTech,Jiangsu Industrial Technology Research Institute,Kunshan 215300,China

School of Electromechanical Engineering,Soochow University,Soochow 215031,China

School of Engineering and Design,Brunel University London,London UB83PH,United Kingdom

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2022

纳米技术与精密工程(英文)
中国微米纳米技术学会,天津大学

纳米技术与精密工程(英文)

CSTPCDCSCDEI
影响因子：0.476
ISSN：1672-6030
年,卷(期)：2022.5(2)
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