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《China Mechanical Engineering》 2018-07
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Study on Deep-hole Axis Deflections Based on Elastic-plastic Deformations of Self-directed Pairs

PANG Junzhong;LI Pengfei;HUANG Xiaobin;School of Mechanical Engineering,North University of China;  
Based on the self-directing mechanism,the loads and contact states of the guide pairs were analyzed.By using Hertz contact theory and the elastic-plastic contact deformation theory,the deformation model of self-directed pairs and the mathematical prediction mode of deep-hole axis deflections were established.Combined with the theoretical model and the drilling experiments,the contact states of the guide pairs in the drilling processes were determined.The influences of the hysteresis of guide bar and the workpiece materials on the axis deflections were studied.The research results show that the greater hysteresis,the greater axis deflections;the smaller stiffnesses of the material,the greater axis deflections.
【Fund】: 山西省重点实验室开放基金资助项目(XJZZ201601-06);; 国家自然科学基金资助项目(51175482);; 国家国际科技合作专项资助项目(2013DFA70770)
【CateGory Index】: TG523
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