Direct tooling using stereolithography (SL) photopolymer has been developed as rapid tooling for short-run injection molds. However, the tool strength, thermal conductivity, and erosion resistance of SL mold are lower than that of the conventional metal mold. Previous study has showed that the tool life was limited under 200 shots and tool damage often occurs during part ejection. In this paper, experimental data from a demolding properties test are presented and discussed. The experiments were performed using various cooling time, hold pressure, and mold temperature. The experimental data were analyzed by measuring demolding force and surface roughness to evaluate tool life and failure mechanism in order to obtain a working range for the process parameters. The test result shows that the demolding force has close relation with cooling time and mold temperature.
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e-mail: chenrh@mail.nctu.edu.tw
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August 2007
Technical Briefs
Experimental Study of Demolding Properties on Stereolithography Tooling
Chao-Chyun An,
Chao-Chyun An
Department of Mechanical Engineering,
National Chiao Tung University
, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan, R.O.C.
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Ren-Haw Chen
Ren-Haw Chen
Department of Mechanical Engineering,
e-mail: chenrh@mail.nctu.edu.tw
National Chiao Tung University
, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan, R.O.C.
Search for other works by this author on:
Chao-Chyun An
Department of Mechanical Engineering,
National Chiao Tung University
, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan, R.O.C.
Ren-Haw Chen
Department of Mechanical Engineering,
National Chiao Tung University
, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan, R.O.C.e-mail: chenrh@mail.nctu.edu.tw
J. Manuf. Sci. Eng. Aug 2007, 129(4): 843-847 (5 pages)
Published Online: November 2, 2006
Article history
Received:
March 18, 2006
Revised:
November 2, 2006
Citation
An, C., and Chen, R. (November 2, 2006). "Experimental Study of Demolding Properties on Stereolithography Tooling." ASME. J. Manuf. Sci. Eng. August 2007; 129(4): 843–847. https://doi.org/10.1115/1.2716752
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