Research On Key Technology Of Numerical Simulation Of Titanium Alloy Structural Parts

Titanium alloy is a kind of important metal which is widely used in aerospace.The structure made of titanium alloy is not only high strength,light weight,good corrosion resistance and good fatigue resistance,but titanium alloy itself is a kind of difficult-to-process material,Force,roughness,tool wear,cutting process simulation has profound significance.In order to avoid the influence of tool wear on the test results,the cutting test was carried out with the same set of 16 tools.The effects of cutting parameters and tool wear on the cutting force,roughness Influence law,regression analysis to fit three-way cutting force,roughness empirical formula.Two sets of the same tool are used for normal machining and rebound friction processing respectively,and the wear mechanism of the tool is analyzed and compared.Using control variable method,fixing other factors,changing the feed rate and cutting speed of each tooth respectively,and then identifying the cutting force coefficient.Finally,the exponential formulas of cutting power and cutting parameters are summed up.The secondary development technology of VERICUT software is used,the machine parameter database realizes the real-time simulation of milling power in the roughing process of titanium alloy and real-time checking and comparison function of the machine power,which provides the technical basis for the process optimization of the roughing process.The results show that the cutting parameters have a great influence on the cutting force and roughness,the rebound friction has little effect on the tool wear the tool wear has a serious impact on the cutting force and roughness,the real-time simulation of the cutting power and the real-time verification of the machine power can be Roughing process technology to provide the technical basis for optimization.