Abstract

Due to the high temperature toughness and low thermal conductivity of 2.25Cr1Mo0.25V material, the rake face of the tool can easily wear out during the cutting process, which reduces the service life of the tool. In this paper, by analyzing the contact behavior, heat exchange conditions and tool wear mechanism during the cutting process, a 3 D finite element simulation model of tool wear in accordance with the actual cutting process is established. Combined with the cutting wear experiment, the validity of the model is verified. The influence of cutting speed, cutting depth, feed rate and the interaction between them on rake face wear was studied by designing a simulation scheme. The simulation results show that: With the increase of cutting speed and feed rate, the wear depth of the tool's rake face gradually increase, but for cutting depth, the depth of wear gradually decreases. The interaction of cutting speed and feed rate has a significant influence on the rake face wear, the interaction between cutting speed and feed rate, and the interaction between feed rate and cutting depth are not significant. The research results provide a theoretical basis for improving the service life of the tool and provide technical guidance for the selection of cutting parameters in the actual production.

摘要

由于2.25Cr1Mo0.25V材料的高温韧性和低导热性，刀具的前刀面在切削过程中很容易磨损，从而降低刀具的使用寿命。本文通过分析切削过程中的接触行为、热交换条件和刀具磨损机理，建立了符合实际切削过程的刀具磨损3D有限元仿真模型。结合切削磨损实验，验证了模型的有效性。通过设计仿真方案，研究了切削速度、切削深度、进给量及其相互作用对前刀面磨损的影响。仿真结果表明：随着切削速度和进给量的增加，刀具前刀面的磨损深度逐渐增加，但对于切削深度，磨损深度逐渐减小。切削速度和进给量的交互作用对前刀面磨损有显着影响，切削速度和进给量的交互作用不显着，进给量和切削深度的交互作用不显着。研究结果为提高刀具使用寿命提供理论依据，为实际生产中切削参数的选择提供技术指导。