International Journal of Precision Engineering and Manufacturing-Green Technology

Korean Society for Precision Engineering (한국정밀공학회)
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Grinding Marks on Ultra-Precision Grinding Spherical and Aspheric Surfaces

  • Chen, Bing (Intelligent Manufacturing Institute, Hunan University of Science and Technology) ;
  • Li, Shichun (Intelligent Manufacturing Institute, Hunan University of Science and Technology) ;
  • Deng, Zhaohui (Intelligent Manufacturing Institute, Hunan University of Science and Technology) ;
  • Guo, Bing (Center for Precision Engineering, School of Mechatronics Engineering, Harbin Institute of Technology) ;
  • Zhao, Qingliang (Center for Precision Engineering, School of Mechatronics Engineering, Harbin Institute of Technology)
  • Received : 2017.02.24
  • Accepted : 2017.05.27
  • Published : 2017.10.01
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Abstract

Grinding marks are regard as a great obstacle to manufacture spherical and aspheric surfaces with higher surface quality, lower energy and wastage. The scallop-height was studied for optimizing the grinding parameters firstly to reduce its effect on grinding marks. Secondly, the expression of grinding points distribution was established to characterize the grinding marks caused by the radial run-out of grinding wheel. And then, the aspheric grinding experiments of monocrystalline silicon were carried out to investigate the influence of grinding marks on surface quality. The experiments revealed that the remarkable grinding marks with patterned grinding points distribution would cause more fractures and roughness, deeper grooves, and more inhomogeneous surface quality compared with the weak grinding marks. The discriminating standard of grinding marks was established, and the grinding parameters were optimized for homogenizing the grinding points distribution by this discriminating standard to reduce the grinding marks in actual grinding process. Finally, the large size infrared lens was ground with high surface quality by the optimized grinding parameters, and the results of surface quality demonstrate that the discriminating standard was effective. This research provides references and ideas for grinding aspherical surface with high surface quality and efficiency, low energy and wastage.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China, Hunan University of Science and Technology

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