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Development of a magnified flexure mechanism for fast tool servo system
Lu Hong(여굉),Soo Chang Choi(최수창),Yong Woo Kim(김용우),Jin Geun Kim(김진근),Deug Woo Lee(이득우) 한국생산제조학회 2009 한국공작기계학회 추계학술대회논문집 Vol.2009 No.-
The flexure-hinge mechanisms are commonly used in the design of translational micro/nano-positioning stage. This paper presents the methodology for design and control of a lever-type magnified flexure mechanism used for the ultra-precision fast tool servo (FTS) system. A lever type hinge mechanism is designed and utilized to guide the tool stage and to preload the PZT actuator. A prototype of the FTS system was developed and tested. The influence of tile PZT actuator's capacitance on the output voltage of the given amplifier was investigated. The motion range of the FTS system can reach 11.3㎛ and a bandwidth of 600㎐, and the amplification of the lever flexure mechanism is approximately 5 as calculated from the experiment.
여굉(Hong Lu),최수창(Soo-Chang Choi),이상민(Sang-Min Lee),박천홍(Chun-Hong Park),이득우(Deug-Woo Lee) 한국기계가공학회 2011 한국기계가공학회지 Vol.10 No.6
The application of fast tool servo (FTS) for diamond turning has been investigated extensively. This paper focuses on the fabrication of the sinusoidal microstructure on a roller, which generated by a piezoelectric-assisted FTS. The influence of the machining parameters on the microstructure configuration was investigated. The experiment results point out that the configuration of the machined microstructure depends mainly on the spindle speed, the diameter of roller and the driving frequency of FTS. The calculation method of the microstructure dimension was reported. The turning test results show that the diamond tool can be moved up to 1kHz without any reinjected vibration in the machining and the peak-to-valley amplitude of the machined sinusoidal microstructure is about 12μm.