A novel long range fast tool servo for diamond turning

A novel long range fast tool servo for diamond turning
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用于金刚石车削的新型远程快速刀具伺服系统

DOI:
10.1007/s00170-015-8282-9
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发表时间:
2016-01
影响因子:
3.4
通讯作者:
Li Shengyi
Li Shengyi
中科院分区:
工程技术3区
文献类型:
--
作者:
Tian Fujing;Yin Ziqiang;Li Shengyi

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基于刀具伺服系统的单点金刚石车削(SPDT)是加工光学自由曲面的重要技术之一。传统的压电陶瓷驱动的快刀伺服系统存在行程短的问题,而慢刀伺服系统存在频率响应低的缺点。本文简要介绍了一种新型的高频率响应、长行程的远程快速刀具伺服系统。总行程可达30 mm。该LRFTS使用音圈电机作为执行元件和空气轴承作为指导机制。LRFTS利用线性编码器测量工具的位移以进行闭环控制。分析了LRFTS系统幅频响应的伺服性能。确定了LRFTS的物理模型。一系列的实验已经进行,以验证所设计的LRFTS的性能。利用所设计的LRFTS对铝合金零件进行了微透镜阵列的加工实验。分析了影响表面粗糙度的因素。
Single point diamond turning (SPDT) based on tool servo system is one of the significant techniques to fabricating the optical freeform surfaces. The conventional fast tool servo (FTS) actuated by piezoelectric actuator has the problem of short stroke, while the drawback of the slow tool servo (STS) is low frequency response. This paper briefly presents a novel long range fast tool servo (LRFTS) with high frequency response and long stroke. The total stroke can reach up to 30 mm. The LRFTS uses a voice coil motor as the actuating element and air bearings as the guide mechanism. The LRFTS utilizes a linear encoder to measure the displacement of the tool for closed loop control. The servo performance of the LRFTS system’s amplitude and frequency response is analyzed. The physical model of the LRFTS is identified. A series of experiments have been conducted to verify the performance of the designed LRFTS. Micro-lens array fabrication experiments on an aluminum part are conducted using the designed LRFTS. The factors influencing the surface roughness have been analyzed.
DOI: 10.1016/j.sna.2004.09.019
发表时间: 2005-03
影响因子: 4.6
作者:
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