快速成形制造中光敏树脂收缩特性的实时测量与成形精度分析.PDFVIP

1998 11 　　　　　 31　 6 　　　　　　 　　　　　　 Nov . 1998 JOURNAL OF TIAN JIN UNIVERSITY 　Vol. 31 No. 6　 * 江开勇 　刘又午 () 　　从实验分析入手,介绍一种实时测量光敏树脂收缩率的测试方法.并通过建模分析 ,提 材料本身的收缩率、聚合速度以及扫描速度、连续路径长度等参数与成形精度的关系.为分析快速 成形制造技术中的精度问题提供重要依据. 　,,,, 　TH161 REAL TIME MEASUREMENTS OF SHRINKAGE OF PHOTOPOLYMERS AND THE ANALYSIS ON MODELLING ACCURACY IN RPM Jiang Kaiyong　Liu Youwu ( School of Mechanical Engineering, Tianjin University) Abst act　This paper int rod ces a method for real time meas rem ents of the shrinkage of the pho- topolym er Combined with the theoretic model analysis the relationship betw een the shrinkage. , ( fraction) of photopolymers, rate of polymerization, laser scan speed, contin o s line length etc. and the modelling acc racy has been determined It provides the important information for the. analysis of the modelling acc racy in th e Rapid Prototype Modelling process. 　 , , , , Keywo ds rapid prototyping photopolymer shrinkage rate real time meas rement modelling ac- c racy 　　. ,. 　　. ,., ., ,,., ., 1997 5 27. 1998 3 15. 　* 　1961,,. 1961, , . Born in male Dr ·758· 　　　　　　　　　　　　　　　　　　　　1998 11 ,. ,,,, .: , ;,,, ,. 1　 　　,, .“” .“”. 　　 5: 、,、 . 1. 1　 Fig. 1　Real time measu ement equipment of sh inkage of photopolyme s 　　,、, . 　　.(), .,, ,,. ,. 　　, 1/10 mm.,, . 　　, ., ,, 　 31 6　 : ·759· . 2　 　　 Giba-Geigy XB 5081-1 U D F 61. 1.“” 0. 04 , 76. 9 / 2 66. 5 / 2 , s