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《Nonferrous Metals》 2007-02
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Numerical Simulation for Effect of Cutting Depth on Al-alloy Cutting Process

LIU Sheng-yong1,WAN Xiao-hang2,DONG Zhao-wei2(1.Mechanic Department of Hebei Normal University,Shijiazhuang 050031,China;2.Vocational and Industry Institute of Hebei,Shijiazhuang 050091,China)  
The effect of the cutting depth on the cutting process of the Al-alloy is investigated.The two-dimension heat-mechanic coupling orthogonal cutting model is established with the FEM analysis software by use of the Lagrange quality point coordinate system description method.The work-piece chip breaking process is simulated by the adaptive meshing criteria.The results show that the effect of cutting depth on cutting force is in linearity.The more the cutting depth,the more the cutting area and the cutting width,and the bigger the cutting force.The distribution and magnitude of the residual stress resulted by machining is influenced by the cutting depth.The residual stress distributes in the thin layer with less than 0.2mm under the surface of work,so its effects on the machining deformation of thin wall parts is remarkable.Therefore,the small cutting depth is firstly used in finish working procedure in order to improve the machining precision and reduce the residual stress of work surface.
【Fund】: 河北省科技厅科研资助项目(05212105D);; 河北省教育厅科研资助项目(2002240)
【CateGory Index】: TG501.1;TG146.21
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