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Keywords = double piezoelectric driving (DPD)

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18 pages, 9972 KiB  
Article
A Novel Fast Servo Tool Device with Double Piezoelectric Driving
by Junfeng Liu, Tiancong Luo, Kexian Liu, Tao Lai, Yuqian Zhao and Linfeng Wang
Micromachines 2023, 14(1), 85; https://doi.org/10.3390/mi14010085 - 29 Dec 2022
Cited by 4 | Viewed by 2090
Abstract
The fast tool servo (FTS) technology has unique advantages in the machining of complex surfaces such as special-shaped targets and free-form surfaces. In view of the shortcomings in the performance of the existing FTS device, this paper puts forward a novel FTS which [...] Read more.
The fast tool servo (FTS) technology has unique advantages in the machining of complex surfaces such as special-shaped targets and free-form surfaces. In view of the shortcomings in the performance of the existing FTS device, this paper puts forward a novel FTS which uses two piezoelectric ceramics instead of flexure hinges to provide restoring force. Firstly, the feasibility of the double-drive principle is verified theoretically, and the corresponding mechanism is optimized accordingly. Then, the system control hysteresis model is established and identified, and the appropriate control strategy is designed. Finally, the performances of the proposed FTS device are tested, and a typical microstructure is machined based on the device and ultra-precision lathe. The results indicate that the proposed device effectively improves the performance of the FTS system, which is useful for the processing of microstructures and free-form surfaces. Full article
(This article belongs to the Special Issue Piezoelectric MEMS/NEMS—Materials, Devices, and Applications)
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