Study On Simulation Of Titanium Alloy With Ultrasonic Vibration Milling

At present,titanium alloy have become an indispensable material for aerospace aircraft fuselage components and compressor parts of jet engines due to their excellent material properties and characteristics,but traditional cutting technology have been difficult to meet the requirements of the high-quality processing of titanium alloys,and it is easy to break the blade.Ultrasonic vibration machining is an intermittent machining that combines ultrasonic vibration with ordinary machining to achieve periodic contact and separation,thereby reducing cutting force and cutting temperature.Therefore,ultrasonic machining has the advantages of high processing efficiency,high processing surface quality and green environmental protection.Etc.Ultrasonic vibration processing technology has achieved remarkable results in turning machining and it has unique advantages in difficultto-machine brittle materials.In this project,the ultrasonic vibration milling of titanium alloy will be studied,and the mathematical model of tip trajectory of milling cutter will be established.The main research contents of this paper include:The status of ultrasonic vibration processing at home and abroad and the advantages of ultrasonic machining are studied by referring to literature,and the excellent characteristics,application fields and problems in the processing of titanium alloy TC4 are understood.Then,the purpose and significance of this research are clarified.The model of the trajectory of the cutter edge and the thickness of the cutting layer during the ultrasonic vibration milling of titanium alloy are established.The simulation of the speed and feed characteristics of the machining process is carried out,and the feed characteristics are not related to the number of milling edges are verified,which provide a theoretical basis for the ultrasonic vibration milling of titanium alloy experiments.condition.The ultrasonic vibration machining of titanium alloy machining process is simulated by the analysis software Abaqus,and the superiority of ultrasonic vibration processing in stress strain,milling force and temperature temperature are studied,which provide reference data selection for the following experiments.The experimental platform was built in the TH5650 vertical boring and milling machining center.The variation of the milling force generated by ultrasonic vibration milling and ordinary milling under different process parameters is tested.The correctness of the simulation results is verified.The exponential model of milling force in ultrasonic vibration milling is inferred,which can predict the milling force generated under different parameters.The influence of multiple process parameters on milling force is derived.By comparing the ordinary processing with the test,the superiority of the surface integrity after ultrasonic vibration processing is obtained.The influence of ultrasonic vibration processing on the surface integrity of titanium alloy TC4 was obtained by single factor experiment to study the variation of surface integrity under different parameters.The optimal process parameter combination was obtained by orthogonal experiment and the experimental results were analyzed.