Proceedings of the
9th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN2022)
15 – 18 November 2022, Singapore

A New Method for V-Groove Microstructured Surface Polishing Using Non-Newtonian Fluids

Meng Zhang1, Pengfei Zhang1, Zhe Yang1 and Jiang Guo1,a

1Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, China


Normally, injection molding is employed to manufacture V-Groove optical components, and ultra-precision turning is used to fabricate the mould. However, ultra-precision turning cannot meet the surface quality demands due to the tool marks. To solve this problem, a non-contact polishing method using non-Newtonian fluids has been proposed in this paper to achieve ultra-precision processing of V-Groove microstructured surfaces. The effects of oxidant concentration, tool speed and vibration frequency on surface quality of microstructured surfaces were investigated. Meanwhile, profile of microstructured V-Grooves before and after polishing was also analyzed. The optimum process parameters were obtained. The surface roughness of V-Groove microstructured surface was reduced from the initial Ra 200 nm to 53 nm, less than 2 µm form accuracy were achieved, while the tool marks and burrs were effectively removed.

Keywords: V-Groove microstructured surface, Conformal polishing, Form accuracy, Surface roughness

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