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首页> 外文期刊>Journal of Manufacturing Processes >Investigation of the optimal parameters for the surface finish of K9 optical glass using a soft abrasive rotary flow polishing process
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Investigation of the optimal parameters for the surface finish of K9 optical glass using a soft abrasive rotary flow polishing process

机译：使用软磨料旋转流抛光工艺研究K9光学玻璃表面光洁度的最佳参数

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摘要

A workpiece polished by soft abrasive flow polishing has the advantages of low damage and ultrasmoothness. However, due to the need to use a constrained flow path, the fluid dynamic pressure on the near wall surface of the workpiece has a gradient distribution, so achieving uniform polishing of workpieces of large size is difficult. To address this problem, this paper proposes a new method of soft abrasive rotary flow (SARF) polishing to achieve low damage, ultrasmooth, uniform polishing of a large-size K9 optical glass surface. A new SARF polishing system and a 6-outlet rotary polishing tool are designed. The SARF polishing principle is analyzed, and a polishing experiment is conducted on K9 glass. The experiment of surface roughness improvement of the K9 optical glass is designed by Taguchi method. Orthogonal arrays and the signal-to-noise ratio (S/N) are used to determine the optimal parameters for SARF polishing. Analysis of variance (ANOVA) is used to determine the effect of the main polishing parameters on the surface roughness of K9 glass. According to the results of the polishing experiment using a Taguchi L-18 orthogonal array and S/N ratio analysis, the optimal parameters for K9 glass SARF polishing are revealed to be as follows: the abrasive material is CeO2, the polishing pressure is 0.35 MPa, the abrasive particle concentration is 5 wt%, the average size of the abrasive particles is 0.7 mu m, the polishing time is 1.5 h and the platform rotation speed is 10 rpm. After polishing the sample for 1.5 h under these parameters, the surface roughness decreases from the original value of R-a = 37.28 nm to R-a = 4.51 nm, and the surface roughness improves by 87.9 %.
机译：通过软磨料流抛光抛光的工件具有低损伤和超光滑的优点。然而，由于需要使用受限的流动路径，因此在工件的近壁表面上的流体动压力具有梯度分布，因此难以对大尺寸的工件进行均匀抛光。为了解决这个问题，本文提出了一种新的软磨料旋转流（SARF）抛光方法，以实现对大尺寸K9光学玻璃表面的低损伤，超光滑，均匀抛光。设计了新的SARF抛光系统和6出口旋转抛光工具。分析了SARF的抛光原理，并在K9玻璃上进行了抛光实验。采用田口法设计了K9光学玻璃表面粗糙度改善的实验。正交阵列和信噪比（S / N）用于确定SARF抛光的最佳参数。方差分析（ANOVA）用于确定主要抛光参数对K9玻璃表面粗糙度的影响。根据田口L-18正交阵列抛光实验结果和信噪比分析，得出K9玻璃SARF抛光的最佳参数为：磨料为CeO2，抛光压力为0.35 MPa。 ，磨料颗粒浓度为5wt％，磨料颗粒的平均尺寸为0.7μm，抛光时间为1.5h，平台转速为10rpm。在这些参数下抛光样品1.5小时后，表面粗糙度从R-a = 37.28 nm的原始值减小到R-a = 4.51 nm，并且表面粗糙度提高了87.9％。

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