Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Development of 3D Measuring System for Artificial Pontic using Spherical Coordinate System Mechanism

구면좌표계식 기구를 이용한 인공치아의 3차원 측정시스템 개발

  • 맹희영 (서울산업대학교 공과대학 기계설계자동화공학부) ;
  • 성봉현 (서울산업대학교 산업대학원, (주)유니슨)
  • Received : 2009.11.24
  • Accepted : 2010.07.30
  • Published : 2010.08.15
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Abstract

With recent increased demand for reverse engineering in dental machining, the 3D laser scanner is widely used for inspection of artificial pontic. In order to overcome the optical drawback of laser scanner, such as irregular scatter, direction of beam, and the influence of surface integrity, it is developed in this study a new 3D measuring system for artificial pontic using spherical coordinate system mechanism by point laser sensor, which keeps the direction of beam normal to surface consistently. The comprehensive integrated system is established to evaluate the improvement of accuracy with data acquisition system. The experimental results for measuring a master ball and pontic models shows the excellent form accuracy and repeatability compared with conventional apparatus. Also, these results shows the possibility to apply this system for the measuring purpose within 0.05mm accuracy of pontic at the sharp edge or margin contour, which was difficult to measure at the conventional systems.

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References

  1. Riegl, 2004, RiSCAN PRO Manual, Version 1.1.1, Riegl Laser Measurement Systems, Berlin.
  2. AICON, 2005, viewed 7 Jan. 2005, "Production Information by AICON 3D Systems GmbH," AICOM, .
  3. Son S., Park H., and Lee K., 2000, "Development of an automated measuring system for freeform surfaces using a laser scanner," KSPE Conf. at Spring 2000, Vol. 1, pp.175-181.
  4. Cloud, G., 1999, Optical Methods of Engineering Analysis, Cambrige Univ. Press, London.
  5. Umeyama, S., 2001, "Least-squares estimation of transformation parameters between two point," IEEE Trans, of Pattern Analysis and Machine Intelligence, Vol. 13, No. 4, pp. 376-380.
  6. Stamos, I.and Allen, P.K., 2000, "3-D Mdel Construction Using Range and Image Data," IEEE International Conf. on Compurer Vison and Pattern Recognition, Vol. 1, pp.531-536.
  7. Zeng, X., Wicks, A., and Mitchell, L., 1996, "Geometrical method for the determination of the position and orientation of a scanning laser," Optics and Laser in Engineering, Vol. 40, No. 5-6, pp. 459-485.