300M超高强度钢车削加工性能仿真模拟分析研究

目的研究不同切削参数对300M超高强度钢切削性能的影响。方法通过单因素试验法,采用Advant Edge切削仿真软件,建立300M钢三维有限元模型,对不同切削参数下车削300M钢的切削力、刀片温度、刀片应力及切屑形状进行分析。结果在300M钢车削过程中,刀片温度随着切削速度增大而增大,但切削力和刀片应力反之;背吃刀量和进给量越小,切削力、刀片应力及刀片温度越小;切削刃半径越小,切削力越小,但小的切削刃半径使得刀片应力变大,容易导致刀片磨损。车削300M钢的切屑呈锯齿螺旋状,切屑温度为带状分布,切削速度越高,进给量、背吃刀量越大,切削刃半径越小,切屑温度越高。结论在300M钢车削加工中,应选用较高的切削速度,适中的切削刃半径,较小的进给量和背吃刀量。

Simulation and Analysis of Turning Performance of 300M Ultra-high Strength Steel

The paper aims to study the influences of different cutting parameters on cutting performance of 300M ul-tra-high-strength steel. A three-dimensional finite element model of 300M steel was established with Advant Edge cutting sim-ulation software and the single factor test method. Cutting force, blade temperature, blade stress and chip of 300M steel were analyzed with different cutting parameters. The results show that in the process of 300M steel turning, the blade temperature in-creased with the increase of cutting speed; while the cutting force and the blade stress were the opposite. The smaller the amount and feed of the back, the smaller the cutting force, the blade stress and the blade temperature, the smaller the radius of the cutting edge, the smaller the cutting force. But small radius of the cutting edge made the big blade stress. It was likely to lead to wear of the blade. The chip of cutting 300M steel showed spiral saw-tooth and the chip temperature was zonally distributed. The higher the cutting speed, the greater the feed and back knife. The smaller the cutting edge radius, the higher the chip temperature. Therefore, in the turning process of 300M steel, high cutting speed, moderate cutting edge radius, small feed rate and back feed should be selected.