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Fabrication of small aspheric moulds using single point inclined axis grinding

Authors
Journal
Precision Engineering
0141-6359
Publisher
Elsevier
Identifiers
DOI: 10.1016/j.precisioneng.2014.06.009
Keywords
  • Single Point Grinding
  • Inclined Axis
  • Compensation
  • Profile Error
  • Aspheric Mould
Disciplines
  • Mathematics

Abstract

Abstract Single point inclined axis grinding techniques, including the wheel setting, wheel–workpiece interference, error source determination and compensation approaches, were studied to fabricate small aspheric moulds of high profile accuracy. The interference of a cylindrical grinding wheel with the workpiece was analysed and the criteria for selection of wheel geometry for avoiding the interference was proposed. The grinding process was performed with compensation focused on two major error sources, wheel setting error and wheel wear. The grinding results showed that the compensation approach was efficient and the developed grinding process was capable to generate small aspheric concave surfaces on tungsten carbide material with a profile error of smaller than 200nm in PV value after two to three compensation cycles.

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