Finite Element Modeling Method and Analysis for Bi-rotarymilling Head Based on Experimental Parameter

doi:10.3901/JME.2020.17.165

Abstract

Abstract: This research proposes a modeling method for multi-component, heavy-weight machine tools. Take the bi-rotary milling head as an example. First, the bi-rotary head is divided into several modules, and the non-consolidated connection structures such as the joint surface and the bearing are used as the boundary between the modules. An equivalent dynamic model is established and the dynamic equation is solved. Then, the joint surface and bearing parameters are obtained through an optimization algorithm based on the experimental data. Finally, the machine model is integrated, and the reliability of the model is verified by frequency response function prediction. Compared with the traditional machine modeling method, which does experiments after the completion of modeling, this method can better summarize the sources of errors, and compare the various simplified schemes in modeling. And it can be applied to other machine tools. In addition to the specialty of the bi-rotary head model, dynamic and static model boundary conditions are proposed. Based on this model, the relationship between working angle and frequency response function is explored. The influencing factors analysis of dynamic and static characteristics and Further structural optimization can be done.

Key words: bi-rotary milling head, finite element modeling, dynamic characteristics

CLC Number:

TH122

YANG Zhe, LIU Chengying. Finite Element Modeling Method and Analysis for Bi-rotarymilling Head Based on Experimental Parameter[J]. Journal of Mechanical Engineering, 2020, 56(17): 165-172.

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