Study On Milling And Cutting Tool Of Equal-high Tooth Spiral Bevel Gear

Equal-high spiral bevel gear drive is one of the main transmission methods applied to the intersecting axle transmission.Equal-high spiral bevel gear drive with mesh smooth,strong carrying capacity and transmission of high precision and low noise advantages,and the application in transmission device of aerospace and automobile transportation tools become more and more widely,It has a very broad prospects for development.But the principle of equal-high gear meshing and processing is more complicated,and the structure of its machining tool is very complicated too,and its core technology has been mastered by the major gear manufacturing companies abroad.The development of equal-high spiral bevel gear processing in China is late,and the technology is not very mature.The processing equipment and the tool are more dependent on foreign gear company to import,resulting in the relatively high cost of contour tooth in China.Therefore,it is of great practical significance to analyze the machining principle of equal-high spiral bevel gear and to analyze the structure and parameters of equal-high spiral bevel gear machining tool.The main research contents of this thesis revolve around the structure parameters of the milling cutter of equal-high spiral bevel gear.First of all,based on the theory of spatial geometry,the meshing principle of the equal-high spiral bevel gear is analyzed and deduced using the method of space coordinate,vector and space transformation.The machining principle of the equal-high spiral bevel gear is analyzed,and the cutting trajectory of blade is deduced.Secondly,the structure parameters of milling cutter are analyzed and optimized based on the machining principle and method of equal-high spiral bevel gear.Through the simulation analysis of cutting performance under different cutting edges,the cutting edge of milling cutter is studied and optimized.The clamping structure of the milling cutter is optimized.Then,the cutting performance under different cutting parameters in the actual cutting environment simulated by the finite element analysis software.The optimiza-tion of blade parameters is carried out by comparing the simulation results of cutting force and cutting temperature.Finally,The cutting experiment was carried out with the optimized blade.The blades are grinded and tested,and they are installed and adjusted on the milling cutter;Complete the cutting of the equal-high spiral bevel gear.The precision of the gears is tested,and The gear meets the precision specification.It shows that the optimal design of the blade meets the actual needs.Based on the above research,a kind of milling cutter used for cutting machining of contour arc bevel gear is provides in the thesis,which provides a certain reference for the machining of equal-high spiral bevel gear.