An adaptive posture following and keeping fixture and experiments
XIONG Rui-bin1,2, HUANG Pu-jin1, KE Ying-lin1
1. College of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China;
2. Mold Engineering Department, Ningbo Polytechnic College, Ningbo 315800, China
In order to keep and fasten reliably the adjusted posture of large components such as fuselage in aircraft digital assembly, a new adaptive posture following and keeping fixture of large components, based on the principle of aerostatic bearing and universal ball joint, was proposed, and a new flexible fixture called posture following and keeping fixture was developed. The influences of pressure fluctuation and component abrasion on axial clamping force, and the relationship between the reliability level of the mandrel adaptively introducing into the thin-wall barrel and the structure and dimension of the mandrel free end were studied. The theoretic analysis and experiments results show that this method is feasible and reliable for posture following and keeping in relation to different kind of conditions and parameters, and the mandrel can adaptively introduce into the thin-wall barrel on condition that the angle deviation of the mandrel is small．
［1］ 郭恩明.国外飞机柔性装配技术［J］.航空制造技术,2005(9):28-32．
GUO Enming. Development of plane flexible assembly technology overseas ［J］. Journal of Aeronautical Manufacturing Technology,2005(9):28-32．
［2］ 融亦鸣,朱耀祥,罗振璧.计算机辅助夹具设计［M］.北京:机械工业出版社,2002:3-12．
［3］ LANGE N, GANDHI M V, THOMPSON B S, et al.An experimental evaluation of the capabilities of a fluidizedbed fixturing system ［J］. Int. Journal Adv. Manufacturing Technology,1989(4):192-206．
［4］ BI Z M, ZHANG W J. Flexible fixture design and automation: review, issues and future directions ［J］. Journal of Production Research, 2001, 39(13): 2867-2894．
［5］ HAZEN F B, WRIGHT P K. Workholding automation: innovations in analysis,design and planning ［J］.Manufacturing Review,1990,3(4):224-236．
［6］ 张先舟,王琪民,张培强.基于磁流变液相变技术的柔性夹具［J］.实验力学,2003,18(2):185-192．
ZHANG Xian-zhou, WANG Qi-min,ZHANG Pei-qiang. The flexible fixture based on magnetorheological fluids ［J］. Journal of Experimental Mechanics, 2003, 18(2):185-192.
［7］ 张春林.高等机构学［M］.北京:北京理工大学出版社,2005：47-48．
［8］ 李春胜.钢铁材料手册［M］.南昌:江西科学技术出版社,2004:34．
［9］ 王光斗,王春福.机床夹具设计手册［M］.上海:上海科学技术出版社,2002:96-100．
［10］ 庄茁.ABAQUS非线性有限元分析与实例［M］.北京:科学出版社,2005:386-405．
［11］ 颜庆津.数值分析(修订版)［M］.北京:北京航空航天大学出版社,2000:207-225．
［12］ 刘暾,刘育华,陈世杰.静压气体润滑［M］.哈尔滨:哈尔滨工业大学出版社,1990:83-98．
