The Development Of A Novel 3-Dimension High-Accuracy Multifunction Experimental Apparatus Of Thermal Deformation

The research work was carried out as a part of the project—Basic Theoretical Research and Application Study of Thermal Deformation Error in Mechanical Fitting (NO.50075023) that is sponsored by National Science Foundation of China (NSFC). At the mean time, the project—Basic Research of Best Thermal Fitting and Thermal Expansion Properties of Common Mechanical Parts (NO.NSC89-2212-E-006-196) that is sponsored by Science and Technology Committee of Taiwan Province was taken as reference. With the disadvantage of existing apparatus in mind, a novel 3-Dimension high-accuracy multifunction experimental apparatus of thermal deformation was developed. The reasons for the inconsistency in material thermal expansion coefficients that available in reference books were analyzed systematically, and accurate thermal expansion coefficients of various materials were determined using the apparatus described in this paper. All these, the apparatus and the experimental findings, will facilitate the further research of this subject in terms of both theory and application.