Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on Improving the Surface Roughness of Stereolithography Parts

광조형물의 표면조도 향상에 관한 연구

  • Published : 2004.09.01
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Abstract

SL(Stereolithography) part is made by piling up thin layers which causes the stair stepping effect at the surface of SL parts. The effect brings about excessive surface roughness and cuts down the merits of using SL part. Hence, additional post-machining finishing such as traditional grinding is required. But the traditional post-machining is detrimental to part geometry and time consuming. In this study, therefore, a paraffin coating and grinding post-machining is newly proposed to improve the surface quality of SL fart. The paraffin which has suitable properties for the proposed post-machining is coated all over the part surface. By grinding the only over-coated paraffin based on boundary of the SL part surface, the surface roughness can be improved without any damage on the part. Also, it is verified that SL part finished by the proposed post-machining process can be applied for rapid tooling as pattern through manufacturing silicon rubber molding and casting test.

Keywords

References

  1. Kochan, D., Chua, C. K., 'State-of-the-art and future trends in advanced rapid prototyping and manufacturing,' International Journal of Information Technology, Vol. 1, pp. 173-184, 1995
  2. Jacobs, P. F., 'Stereolithography and other RP & M Technologies from Rapid Prototyping to Rapid Tooling,' SME, Dearborn, MI, ISBN 0-07-032433-6, pp. 279-301, 1996
  3. Reeves, P. E., Cobb, R. C., 'Reduction the surface deviation of stereolithography using in-process techniques,' Rapid Prototyping Journal, Vol. 3, No. 1, pp. 20-31, 1997 https://doi.org/10.1108/13552549710169255
  4. Narahara, H., 'A new method for improving performance and surface roughness in stereolithography,' Proceedings of The 2nd Korea-Japan Die & Mold workshop, Pusan National University, Pusan, Korea, 28-30 June, 1995
  5. Hagihara, S., 'Laser lithography for making jewlery -A concepts of diagonal irradiation-,' Proceedings of The 8th International Conference on Rapid Prototyping, Tokyo, Japan, 12-13 June, 2000
  6. Cobb, R. C., 'Spencer, J. D., Dickens, P. M., 'Better surface finishing techniques for the RPT is a must,' Proceedings of the 2nd Scandinavian Rapid Prototyping conference, Danish Technological Institute, Aarhus, Denmark, 4-6 October, 1993
  7. Kim, H. C., Ahn, D. K., Lee, S. H., 'Reduction of Post-processing Time for Stereolithography Parts, by Selection of Build Direction,' Proceedings of The 35th CIRP International Seminar on Manufacturing, Seoul, Korea, 13-15 May, 2002
  8. http://www.imperialoil.com/CanadaEnglish/Files/Products_Lubes/IOCAENWPOESSlack_wax.pdf, August, 2002
  9. Lee, K. W., 'Principles of CAD/CAM/CAE systems, Addison-Wesley,' MA, ISBN 0-201-38036-6, pp. 392-410, 1999
  10. Jeong, H. D., Chung, S. I., 'A Study of Rapid Tooling of Porous Metal Mold,' J. of KSPE, Vol. 20, No. 1, pp. 91-98, 2003
  11. Mytotoyo Contracer CBH-400 User's Guide 1997