金属切削刀具结构优化与仿真分析

Structure Optimization and Simulation Analysis on Metal Cutting Tool Structure

本文研究了优化设计的刀具结构对刀具切削性能的影响。优化后的刀具结构使切削液从刀具内部通过,在刀具内部形成强制对流。COMSOL Multiphysics软件仿真结果显示,优化后的刀具结构不仅满足应力强度要求,而且使刀具的工作温度大幅度降低。切削过程中,刀具温度的降低,可降低由切削热引起的热应力和热变形。因此,优化后的刀具结构可极大地降低刀具磨损、增加刀具使用寿命,使零件的加工精度和表面质量得以大幅度提升。

The influence of an optimized tool structure on the tool performance is studied in this paper, The optimized tool strueture makes the coolant flow through the interior of the cutting tool,where internal forced convection is generated. Through COMSOL Multiphysics software,the simulation resuh indieates that the optimized structure not only meets the de- mand of stress and strength, but also makes the cutting temperature reduce greatly. The decrease of the tool temperature can thereby reduce the thermal stress and thermal deformation. In this way, this optimized tool structure can reduce the tool wear and increase the tool life, making the machined accuracy and surface quality greatly improved.