Study on Optimization of Grinding Process Parameters of Monocrystalline Silicon Lens
WANG Yaji1 , SUN Yuli1 , MO Honglei2 , YUAN Hang2 , ZHU Limin2 , LU Bo2 , GUO Lingxi2
( 1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; 2. Shanghai Aerospace Control Technology Institute, Shanghai 221116, China )
Abstract：Aimed at the aspheric monocrystalline silicon lens widely used in the field of infrared optics, the processing technology of aspheric normal grinding was studied. Through orthogonal experiment, the influence of process parameters such as wheel speed, grinding depth and feed speed on the surface roughness and material removal rate of aspheric surface grinding was studied. Through grey correlation analysis, a group of process parameters optimized for the surface roughness and material removal rate of normal grinding was obtained. The results show that, by increasing the rotation speed of the grinding wheel, the surface roughness of the aspheric surface can be significantly reduced, and the uniformity of the surface roughness distribution of the aspheric surface can be improved. Through the grey correlation analysis, the double objective optimization of the surface roughness and the material removal rate of the aspheric normal grinding can be realized, which can not only improve the surface quality of the aspheric components, but also has a certain degree of machining efficiency. The normal grinding method tends to form helix and radial grinding marks on the aspheric surface. The grinding marks could affect the distribution uniformity of surface roughness, so it is supposed to pay attention to restraining the generation of grinding marks.
2021, 
