Optimal selection of machining parameters for fast tool servo diamond turning
Optimal selection of machining parameters for fast tool servo diamond turning
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DOI：
10.1007/s00170-011-3280-z
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发表时间：
2011-05
期刊：
影响因子：
--
通讯作者：
D. Yu;Y. Wong;G. Hong
中科院分区：
文献类型：
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作者：
D. Yu;Y. Wong;G. Hong
具有微米或纳米级微结构表面的超精密加工零件得到了广泛的应用，特别是在光学工业中。快速刀具伺服(FTS)金刚石车削技术在制造波长在几十微米以上的精密复杂微结构表面方面具有优势。然而，为了获得最佳的加工表面质量，需要仔细选择加工参数。研究了FTS金刚石车削加工微结构表面的主轴转速、采样次数、进给速度和刀具几何形状等加工参数的优化选择。开发了一个基于FTS动力学和运动控制器功能的仿真系统，通过计算理论表面粗糙度、主轴转速和采样次数来选择进给速度和刀具几何形状。通过实验验证了加工参数对加工精度的影响。用该方法选择的加工参数加工典型微结构表面，验证了所提出的优化加工参数选择方法和所设计的FTS金刚石车床的有效性。
Ultraprecision machined components with micro-structured surfaces in micrometer or nanometer range have gained wide applications especially in optical industry. A technique called fast tool servo (FTS) diamond turning is superior in fabricating precision and complicated micro-structured surfaces with wavelength above tens of microns. However, in order to obtain optimal machined surface quality, the machining parameters need to be selected carefully. In this paper, optimal selection of the machining parameters, including spindle speed, sampling number, feedrate and tool geometry, for fabricating micro-structured surfaces by FTS diamond turning is presented. A simulation system is developed to select feedrate and tool geometry by computing the theoretical surface roughness, spindle speed, and sampling number based on the FTS dynamics and the motion controller capability. Experiments have been carried out to show the effect of the machining parameters. In addition, machining of typical micro-structured surfaces with machining parameters selected by the presented approach proves the effectiveness of the proposed optimal machining parameters selection method and the designed FTS diamond turning machine.