3D Finite Element Analysis of Cutting Forces in the Process of Machining Rectangular Microchannels

Zhanshu He*, 1, Dalei Li1, Lianduo Cao2, Xuefei Yang3
1 School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China
2 Pingdingshan Tianan Coal Mining Co. Ltd., Pingdingshan 467000, China
3 School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China

© 2014 He et al

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: ( This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China; Tel: +86- 15343818360, Fax: +86-371-67781787; E-mail:


In the process of machining rectangular microchannels, severe friction occurs between the chip and the side face of the machined microchannel. The cutting forces have great effect on the miniature cutting tool. Thus, 3D FEM is adopted to study the cutting forces. The influences of the depth of the machined microchannel t, the cutting depth ac, the cutting width aw , the rake angle ○o and the cutting speed ν on the cutting forces are investigated. Results show that the main cutting force Fz and the thrust force Fy increase with the increase of t, ac and aw and have no obvious change with ν. Moreover, Fz decreases and Fy increases as γ○ increases.

Keywords: Cutting force, FEM, microchannel.