铣削速度对TC4钛合金刀具磨损的影响研究

Study on Influence of Milling Speed on Tool Wear of TC4 Titanium Alloy

为研究TC4钛合金铣削加工中铣削速度对刀具磨损的影响,采用ABAQUS有限元软件进行二次开发,利用单因素试验对铣削过程进行切削仿真,通过改变铣削速度观察刀具磨损率的变化情况。随后进行钛合金的铣削试验,对比试验数据与仿真结果,并验证了仿真的正确性。研究结果表明:两种结果基本一致,仿真结果具有一定的可行性;铣削速度越大,刀具的磨损越严重,刀具的磨损率也就越大;铣削速度增大引起铣削温度升高,使工件发生扩散磨损,工件材料扩散到刀具表面后加速了刀具磨损。因此,在实际加工中要尽可能选取适当的铣削速度,从而提高刀具的使用寿命和切削效率。

In order to study the effect of milling speed on tool wear in milling TC4 titanium alloy,ABAQUS finite element software is used for secondary development,and single factor test is used to simulate the milling process.By changing the milling speed,the change of tool wear rate is obtained.Then the milling test of titanium alloy is carried out,and the test data are compared with the simulation results to verify the correctness of the simulation.The results indicate that the two results are similar,and the simulation results are feasible.That is,the greater the milling speed,the more serious the tool wear,the greater the tool wear rate.The increase of milling temperature caused by the increase of milling speed leads to the diffusion wear of the workpiece and the diffusion of the workpiece material to the tool surface accelerates the wear of the tool.Therefore,it is necessary to choose suitable milling speed to improve the service life and cutting efficiency.