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以UG三维建模平台为设计手段,针对加工大型不锈钢化工件,设计了相匹配的大切深硬质合金可转位车刀的结构;基于有限元分析平台,对所设计的可转位车刀分别进行了结构静力分析和热—力耦合分析,通过对仿真结果的纵向个体和横向总体对比分析,得到只受切削力作用、受切削力与切削热的联合作用的车刀变形及应力变化趋势。从变形和应力角度考虑,评价刀具结构和选材的合理性、温度对刀具寿命的影响。由此可以得出:切削温度对刀具寿命具有重要影响,且在一定条件下,存在一个使刀具变形量为最小的刀杆悬伸量。
With the UG three-dimensional modeling platform as the design method, aiming at the machining of large-scale stainless steel workpiece, the structure of the large depth cut carbide turning lathe is designed. Based on the finite element analysis platform, the designed turning lathe The structural static analysis and thermo-mechanical coupling analysis are respectively carried out. Through the longitudinal individual and transverse general analysis of the simulation results, the deformation and stress change of the turning tool are obtained only by the action of the cutting force, the combined action of cutting force and cutting heat trend. From the perspective of deformation and stress, evaluate the rationality of the tool structure and material selection, temperature on the tool life. It can be drawn: cutting temperature has a significant impact on tool life, and under certain conditions, there is a tool to minimize the amount of tool deformation overhang.