Design and dynamic optimization of an ultraprecision diamond flycutting machine tool for large KDP crystal machining
Design and dynamic optimization of an ultraprecision diamond flycutting machine tool for large KDP crystal machining
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DOI：
10.1007/s00170-013-5020-z
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发表时间：
2013-05
期刊：
影响因子：
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通讯作者：
Yingchun Liang;Wanqun Chen;Q. Bai;Yazhou Sun;Guoda Chen;Qiang Zhang;Yang Sun
中科院分区：
文献类型：
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作者：
Yingchun Liang;Wanqun Chen;Q. Bai;Yazhou Sun;Guoda Chen;Qiang Zhang;Yang Sun
本文介绍了一种用于生产平面半米尺度光学器件的超精密金刚石飞切机床的设计和动态优化。设计了一种新型刀架，实现了微米级的轴向进给和刀具角度的精确调整，并采用新技术实现了主轴轴线与水平滑动行程的对准。介绍了该机床的设计和特性分析，包括静态分析、模态分析、谐波分析和转子动态分析，以预测机床的静态和动态性能。在考虑关节参数的分析和有限元模型的基础上，建立了原型机。加工试验表明，该机床可成功加工出415 × 415 mm的铝和晶体光学表面，平面度为1.3 μm，均方根粗糙度为2.4 nm。此外，还讨论了光学零件加工超精密机床与传统机床在设计理念上的差异。
This paper presents the design and dynamic optimization of an ultraprecision diamond flycutting machine tool for producing flat half-meter-scale optics. A novel tool holder is designed, which can achieve micron-level axial feeding and tool angle accurate adjustment, and new technology is also used to allow alignment of the spindle axis to the horizontal-slide travel. The design and characteristic analyses of this machine tool are presented, including the static, modal, harmonic, and rotor dynamic analysis for predicting its static and dynamic performance. A prototype is built based on the analysis and FE model considering the joint parameters. The machining test shows that this machine tool can successfully produce 415 × 415-mm surfaces on aluminum and crystalline optics, with 1.3-μm flatness and 2.4-nm rms roughness. Moreover, the differences of design concepts are discussed between the ultraprecision machine tool for optical parts machining and the conventional machine tool.