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Research on Chip-Breaking Model and Prediction of 3-D Complicated Groove Insert

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Abstract:

As machining technology develops toward the unmanned and automated system, the need for chip-breaking control is considered increasingly important. In this paper, chip-breaking limit of 3-D complicated groove insert is proposed according to cutting experiments. The mathematical formulation of chip section profile coefficient is established through the analysis of influential effect of 3-D complicated groove on chip section profile. The chip-breaking model is developed to predict the critical feed rate and the critical depth of cut in machining based on analyzing the restricted effect of 3-D complicated groove on chips. Finally, a full experimental validation of the analytical model is presented for chip breaking when the workpiece is steel, 45. The testing results show the critical feed rate model and critical depth of cut model are reasonable and reliable.

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Periodical:

Applied Mechanics and Materials (Volumes 10-12)

Pages:

752-756

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.10-12.752

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Online since:

December 2007

Authors:

E.L. Liu, Rong Di Han, Zhen Jia Li, Hui Ping Zhang, Guo Liang Wei

Keywords:

3D Complicated Groove, Chip Section Profile Coefficient, Critical Depth of Cut, Critical Feed Rate

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Сopyright:

© 2008 Trans Tech Publications Ltd. All Rights Reserved

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References

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[5] L. Zhou: Machining Chip-Breaking Prediction with Grooved Inserts in Steel Turning (Ph.D. Research Dissertation, Worcester Polytechnic Institute, MA, 2001). f (mm/r) Critical depth of cut Critical feed rate ap(mm) Chip-breaking region a) Chip map b) Chip-breaking curves obtained from simulation Fig. 6 Comparison of chip breaking regions obtained from the experiment and the simulation TNMG160404-HK5.

DOI: 10.1016/s0007-8506(07)61000-2

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