Research on ultra precision grinding technologies of large aperture and complex aspheric lens

L. Zhou, Q. C. Wei, X. H. Chen, Q. H. Zhang, J. Wang, Q. Xu

Research output: Contribution to conferencePaperpeer-review

Abstract

The computer aided programming system was developed, which could compute the coordinates and generate the CNC programs automatically. On the premise of waviness controlling, the raster grinding trajectory was optimized. To acquire the radius and form error of diamond wheel, the measurement by a corkscrew spin trajectory was proposed. By precision tool setting, the definitive position between wheel and element was established. Through on-machine measurement, the 3D form error of optics was acquired, which was combined with the theoretical coordinates of aspheric to compensation grinding. In the end the grinding experiment was carried out. The material removal rate of rough grinding, semi-fine grinding and fine grinding were about 466.7 mm3/s, 10.5 mm3/s and 2.3 mm3/s, respectively. The P-V of form error after fine grinding was about 3.21μm. The destination of highly active and ultra-precision grinding of large aperture and complex aspheric lens was achieved.

Original languageEnglish
StatePublished - 2018
Externally publishedYes
Event21st International Symposium on Advances in Abrasive Technology, ISAAT 2018 - Toronto, Canada
Duration: 14 Oct 201816 Oct 2018

Conference

Conference21st International Symposium on Advances in Abrasive Technology, ISAAT 2018
Country/TerritoryCanada
CityToronto
Period14/10/1816/10/18

Keywords

  • Complex Aspheric Lens
  • Error Compensation
  • High Efficiency Grinding
  • Precision Tool Setting
  • Ultra Precision Parallel Grinding

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