Cutting force modeling in helical milling process of unidirectional CFRP

WAN Min; DU Yuxuan; ZHANG Weihong; YANG Yun

doi:10.7527/S1000-6893.2020.24134

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2021 , Vol. 42 >Issue 10: 524134 - 524134

DOI: https://doi.org/10.7527/S1000-6893.2020.24134

Article

Cutting force modeling in helical milling process of unidirectional CFRP

WAN Min ,
DU Yuxuan ,
ZHANG Weihong ,
YANG Yun

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School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China

Received date: 2020-04-24

Revised date: 2020-05-09

Online published: 2020-06-12

Supported by

National Natural Science Foundation of China(51675440,51705427)

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Abstract

The helical milling process has the advantages of reducing the axial force and improving the chip removal and heat dissipation conditions. One of the important process indicators is the helical milling force. In this paper, the modeling method of unidirectional CFRP helical milling force is studied to predict the helical milling force with given machining parameters. First of all, through kinematics analysis and chip geometry analysis of the helical milling process, the side edge and bottom edge dynamic chip thickness models, the fiber cutting direction angle model, and the dynamic cutting force calculation model of the process are established. The cutting force coefficients are then calibrated through the linear groove milling experiment and the bottom edge half-teeth gear milling experiment, respectively, and fitted by the artificial neural network. Finally, the calibrated cutting force coefficients are introduced into the dynamic cutting force prediction model, thereby establishing the unidirectional CFRP helical milling dynamic cutting force prediction model. The accuracy of this model is subsequently verified through the experiment. Compared with the existing model, this model can predict both the change of the cutting force in the spiral motion cycle and the details of each tool rotation cycle. Considering the influence of the fiber cutting direction angle on the cutting force coefficient, it reflects the anisotropy of the unidirectional CFRP material, therefore more accurately predicting the spiral milling force.

Key words： fiber reinforced composites; helical milling; cutting force modeling; fiber cutting direction angles; artificial neural networks

Cite this article

WAN Min , DU Yuxuan , ZHANG Weihong , YANG Yun . Cutting force modeling in helical milling process of unidirectional CFRP[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021 , 42(10) : 524134 -524134 . DOI: 10.7527/S1000-6893.2020.24134

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