The Development of CAM Software for Ultra-precision Aspheric Surface

초정밀 비구면 가공용 CAM 소프트웨어 개발에 대한 연구

  • Yang, Min-Yang (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Taik-Min (Dept. of Mechanical Engineering, Graduate School of Korea Advanced Institute of Science and Technology)
  • 양민양 (한국과학기술원 기계공학과) ;
  • 이택민 (한국과학기술원 기계공학과 대학원)
  • Published : 2002.04.01

Abstract

As consumer electronics, information, and aero-space industry grow, the demand for aspheric lens increases higher. To enhance the precision and productivity of aspheric surface, a CAM system for ultra-precision aspheric surface needs to be realized. In this study, the developed CAM system can generate NC code fur various aspheric surfaces fast and precisely by a new bi-arc interpolation method that the location of maximum error is fixed at an efficient point. The newly developed bi-arc meets the given tolerance more precisely, performs faster calculation. The cutting condition input module and the NC code verification module are adequate to ultra-precision machining, so that a operator can obtain products fast and easily.

Keywords

References

  1. N. Taniguchi, 'Current status in, and future trends of, ultraprecision machining and ultrafine material processing,' Annals of the CIRP, Vol. 32, pp. 573-582, 1983 https://doi.org/10.1016/S0007-8506(07)60185-1
  2. A. I. Minaev, 'Methods of increasing the finishing accuracy of specular surfaces of optical elememts by diamond turning,' The Optical Society of America, pp. 501-504, 1991
  3. M. Y. Yang, T. Y. Shon and T. M. Lee, 'Cam Profile Machining by Tri-arc Curve Fitting,' Int. J. Prod. Res., pp. 1767-1778, 1998 https://doi.org/10.1080/002075498192959
  4. G. W. Vickers, and C. Bradley, 'Curved surface machining through circular arc interpolation,' The winter annual meeting of the ASME, PED, Vol. 45, pp. 191-198, 1990 https://doi.org/10.1016/0166-3615(92)90070-4
  5. 최병규, 'CAM 시스템과 CNC 절삭가공,' 청문각, pp. 195-197, 243-247, 1993
  6. D. B. Parkinson, and D. N. Moreton, 'Optimal biarc-curve fitting,' Computer-aided design, Vol. 23, No. 6, pp. 411-419, 1991 https://doi.org/10.1016/0010-4485(91)90009-L
  7. K. M. Bolton, 'Biarc curves,' Computer-aided design, Vol. 7, No. 2, pp. 89-92, 1975 https://doi.org/10.1016/0010-4485(75)90086-X
  8. D. S. Meek and D. J. Walton, 'Approximating discrete data by G1 arc splines,' Computer-aided design, Vol. 24, No. 6, pp. 301-306, 1992 https://doi.org/10.1016/0010-4485(92)90047-E
  9. J. Schonherr, 'Smooth biarc curves,' Computer-aided design, Vol. 25, No. 6, pp. 365-370, 1993 https://doi.org/10.1016/0010-4485(93)90031-I
  10. N. Ikawa, S. Shimada, and H. Tanaka, 'Minimum thickness of cut in micromachining,' Nanotechnology 3, pp. 6-9, 1992 https://doi.org/10.1088/0957-4484/3/1/002