Numerical Simulation Of High-speed Cutting Of Titanium Alloy

With the NC high-speed spindle technology and machine tools rapiddevelopment, high-speed cutting (High Speed Cutting, HSC) technology hasbeen widely used in the field of aerospace, automotive and mold manufacturingindustry. High-speed cutting technology received attention from industry andacademia and it is not only a advanced technology in the field of machining, butalso a practical technology in the field of industryAs a high-quality lightweight structural materials，titanium alloy are widelyused in aerospace and high-pressure areas in recent years. Since the physicalproperties of titanium, the forming methods of titanium alloy based mainly ongrinding. With the development of high-speed cutting technology, the advancedtechnology is also used the field of titanium formation. However, titanium alloysare belong to difficulty machine materials, the best cutting or milling parametersare not easy to determine and can not achieve optimal cutting efficiency.Applying test methods for optimal cutting parameters will spend a lot of fundsand time. With the development of numerical simulation theory high speedcutting theory and finite element software, we can obtain the best cuttingparameters through computer technology and a small amount of auxiliarycutting tests. The main work of this paper include:First, the paper made a brief introduction to the high-speed cutting and thecutting mechanism. Then some key points about the cutting simulation were introduced based the orthogonal cutting theory. Eventually, the paper establisheda two-dimensional orthogonal cutting numerical simulation model. Comparedwith cutting test results in chip morphology and the cutting forces, the model hasbeen proved correct to some extent. This paper analysed the influence of somefactors to the cutting process through the simulation results.As the reason that the two-dimensional orthogonal cutting simulation isonly research cutting mechanism, this paper established a three-dimensionalmodel for high-speed milling the thin-walled titanium alloy based on the theoryof oblique cutting. The three-dimensional model was correct through the resultscompare between the simulation and cutting tests in the chip morphology andcutting force. This paper studied the milling force fluctuations and the vibrationin the milling process of thin-walled titanium alloy through the simulationresults.