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Experimental Investigation on the Distortion Error induced by Shrinkage in Sterolithography Process  

Kim, Gi-Dae (대구가톨릭대학교 기계자동차공학부)
Oh, Young-Tak (안산공과대학 기계계열 기계시스템전공)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.14, no.6, 2005 , pp. 61-67 More about this Journal
Abstract
During stereolithography processes, one of the main sources of dimensional error of prototype is the distortion effect owing to the shrinkage of resin. In this study, the effects of dimension of specimen, such as length, width, and thickness, on the curl distortion is examined. During the SL processes, the variation of curl distortion ewer is measured according to the number of layers, Through this study, it is verified that there is a big difference of the distortion error in both direction and magnitude between before and after the supports are removed. It Is also observed that end profile of the test part and the upper side around the border are also distorted due to the shrinkage of the resin.
Keywords
Stereolithography; Shrinkage; Curl distortion; Supports;
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