【较好关于热应力】精密测试中影响机械零件受热变形的因素研究.pdf

第22 卷第2 期 合肥 工业 大学 学报( 自然科学版) Vol. 22№2 1999 年4 月 JOURN AL OF HEFEI U NIVERSITY OF T ECHNOLOGY Apr. 1999 黄强先　　费业泰　　黄其圣　　陈晓怀 ( ) , 5 ; , ; ; ; ; TH 01 RESEARCH ON MECHANICAL PART T HERMAL DEFORMAT ION IN PRECISION MEASUREMENT H uang Qiangx ianFei Yeta iH uang Qisheng Ghe n X iaohuai ( Hefei Univer sity of Technology) Abstract Through analyzing the characte ristics of mechanical part, this paper investigates the factors w hich influence thermal deformation of mechanical part thoroughly. It is believed that the ther- mal deformation of mechanical part is influenced by another five sorts of factors besides material ther- mal expansion. Tw o cylinders of different materials are taken as measuring objects and it is proved through experiment that thermal deformation of mechanical part is distinctly different from material thermal expansion. Key words mechanical part, precision measurement, thermal deformation, cause of deforma- tion thermal deformation calculation, , , : 1998-08-05 ( : 9535901) : , 1968 , , , . : 230009 : , 1934 , , , . : 230009 : , 1940 , , , . : 230009 12 　　　　　合肥工业大学学报( 自然科学版) 　　　　　　1999 年第22 卷( 2) , , , , , 50% , , L = L T ( 1) L T L , ( 1) , ( 1) , , , , , , , , , , , 1 1. 1 , , - 100 - 6 - 6 - 6 2010 / , 2410 / , + 100 2 10 / 1. 2 , l 1 / ( % ) /