The Method Of Digital Simulation For Calculation On Profile Of Disc Cutter Of Screw

Rotary compressor as the key components of fluid machinery,the quality of products plays an imporeant role.The greatest impact on whole rotary compressor is screw profile, it’s means that property depends on the design profile of compressor.Rotary compressor screw surface eomplex,high accuracy rate brings certain difficulty for processings the screw surface milling cutters have more stringent requirements.Based on the above,the study on profile design of disk milling cutter is of theoretical and practical significance.Firstly,unilateral asymmetric cycloid pin tooth arc of screw the end face of tooth shape separated by arc,line,cycloid,and geometric design of the screw.On this basis,using the envelope principle to calculate disc cutter surface profile.Solving mathematical model of milling cutter profile,composed of cubic-B-spline fitting to get disc cutter profile.Secondly,using the principle of digital simulation of conjugate surfaces,disk milling cutter calculations.Establish the benchmarking function,set a reference line in the axialt section of milling cutter,each point on the line issued line sink,thus traditional meshing problem into solve the minimum of benchmark function of mathematical programming problems.Through two step search method to get minimum of benchmark function accurately. Connect all the benchmark endpoints of the line sinks to get a disk milling cutter axial section profile.Tool surface regard as given camber,anti-inference screw surface profile,profile compared with the theoretical profile,veracity of disk milling cutter profile checkout.Finally,using anti-inference method to get discrete points of female and male screw,to established three dimensional model of screw.Dynamic meshing condition for motion simulation process of female and male screw.