TY - GEN
T1 - A unified geometric modeling method of process surface for precision machining of thin-walled parts
AU - Zhang, Ying
AU - Zhang, Dinghua
AU - Wu, Baohai
AU - Yang, Jianhua
PY - 2013
Y1 - 2013
N2 - Thin-walled parts are widely used in aerospace, ships and automotive fields. However, due to the characteristics of multi-process and multi-procedure manufacturing technology, the production efficiency and machining precision of those parts are greatly limited. In this paper, a unified geometric modeling method for precision machining of thin-walled parts is presented. The unified model is established to represent the polymorphism of process surface for every stage in the whole machining process. Then with four variables, including design surface model, process surface model, offset transform and localization transform as well as the interactions among them, different application problems are described, which reveal the common mathematical essence. Firstly, for the process design of thin-walled parts, nonuniform allowance optimization design method is proposed based on the stable process stiffness. Secondly, for the rapid clamping and localization of thin-walled parts, a method of alignment localization with constraints and allowance optimization is presented for the near-shape blank. Thirdly, for the machining process controlling of thin-walled parts, a modeling and compensation method of elastic deformation error is developed in the multi-axis NC machining. Finally, several examples show that the geometric modeling method is feasible and the results can carry high precision and efficiency for thin-walled parts.
AB - Thin-walled parts are widely used in aerospace, ships and automotive fields. However, due to the characteristics of multi-process and multi-procedure manufacturing technology, the production efficiency and machining precision of those parts are greatly limited. In this paper, a unified geometric modeling method for precision machining of thin-walled parts is presented. The unified model is established to represent the polymorphism of process surface for every stage in the whole machining process. Then with four variables, including design surface model, process surface model, offset transform and localization transform as well as the interactions among them, different application problems are described, which reveal the common mathematical essence. Firstly, for the process design of thin-walled parts, nonuniform allowance optimization design method is proposed based on the stable process stiffness. Secondly, for the rapid clamping and localization of thin-walled parts, a method of alignment localization with constraints and allowance optimization is presented for the near-shape blank. Thirdly, for the machining process controlling of thin-walled parts, a modeling and compensation method of elastic deformation error is developed in the multi-axis NC machining. Finally, several examples show that the geometric modeling method is feasible and the results can carry high precision and efficiency for thin-walled parts.
KW - Allowance optimization design
KW - Constraint alignment
KW - Error compensation
KW - Process geometric model
KW - Stable process stiffness
UR - http://www.scopus.com/inward/record.url?scp=84890849088&partnerID=8YFLogxK
U2 - 10.1109/ISAM.2013.6643459
DO - 10.1109/ISAM.2013.6643459
M3 - 会议稿件
AN - SCOPUS:84890849088
SN - 9781479916573
T3 - Proceedings - 2013 IEEE International Symposium on Assembly and Manufacturing, ISAM 2013
SP - 285
EP - 287
BT - Proceedings - 2013 IEEE International Symposium on Assembly and Manufacturing, ISAM 2013
T2 - 2013 IEEE International Symposium on Assembly and Manufacturing, ISAM 2013
Y2 - 30 July 2013 through 2 August 2013
ER -