Deformation of Serrated Chips Based on Minimum Energy Consumed for High Speed Machining

Abstract:

The geometrical model for serrated chip was set up by studying the characteristic of typical chip during high speed machining. According to the adiabatic shear theory under the condition of high speed machining, friction force and flow velocity on back surface of chip as well as shear force and shear velocity on sliding plane were obtained by establishing mechanics and kinetic models via analyzing equilibrium forces exerted on the saw-tooth chip at the moment when the catastrophic thermoplastic instability occurred on slippage plane, then energy equation for cutting was offered. With strain, strain ratio, cutting temperature and deformation hardening considered, deformation equation was found using the principle of minimum energy. Finally, deformation equation and factors that affect deformation during high speed cutting were ascertained by combining analysis of deformation curve with cutting theory.

• Periodical: Applied Mechanics and Materials (Volumes 217-219)
• Pages: 1609-1613
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.217-219.1609
• Online since: November 2012
• Authors: Hu Ping An, Zhi Yuan Rui, Rui Feng Wang, Zhi Mei Zhang
• Keywords: Catastrophic Shear Slide, Deformation Equations, High Speed Cutting, Minimum Energy, Serrated Chip

References

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