Research on the Influence of Tool Wear in the Process of Machining IN718 Alloy
In order to analyze the influence of different tool wear forms and tool wear amounts on the cut-ting process and cutting results,this paper simulates the cutting process of 718 nickel base alloy under three different wear forms and different wear amounts of tool tip circular radius wear,flank wear and crescent de-pression wear based on finite element tools and orthogonal models,and extracts the distribution of tempera-ture and residual stress by establishing multiple paths Average.The results show that no matter what form of tool wear,it will affect the cutting results.With the increase of tool wear,the cutting force and cutting tem-perature will increase.At the same time,the residual stress on the cutting surface will basically deteriorate.However,when the cutting temperature in the early stage fails to make the material produce more thermo-plastic deformation,the cutting force plays a leading role,at this time,the change of residual stress presents a corresponding abnormal phenomenon.
finite element simulationtool wearcutting temperaturecutting forceresidual stress
NETL
NSTL
万方数据
维普
