Research On Modified Geometry Of Cylindrical Gear And Meshing Behavior

:face-gear transmission receive more and more attention because it has high torque drive,a small volume and quality.How to improve its meshing property become the key point. In this paper, Meshing Behavior of cylindrical gear with tooth profile modification and crowning are studied.The main content include some points as follows:According to the processing method and meshing theory, the equations of tooth surface and fillet surface are deduced.According to the characteristics of face gear tooth surface, solved the minimum inne radius for the face-gear undercutting and maximum outer radius for being a point,the3D models of cylindrical pinion and face-gear are established.The parabolic tooth profile modification and crowning grinding modification of cylindrical gear are proposed.By finite element contact analysis with ABAQUS,we get the data of maximum principal stress, contact area and transmission errors, compared with unmodified gear system, get the advantage of modified gear.In structural vibration and noise analysis of face-gear system, Modal inherent and intrinsic frequency of the system are got by modal analysis.Elastic vibration model of orthogonal face gear is established, and solved by ADAMS software to obtain the angular acceleration of the time domain and frequency domain for each instance of face gear, and analyzes the impact of the load and speed to the angular acceleration. According to the equations of acceleration in1/3octave noise to calculate noise in meshing frequency.Face-gear, spur gear and modified cylindrical gear are made, The contact pressure of the different face-gear, transmission errors, vibration acceleration and noise values are measured in the detector, the experiment verify the simulation results and theoretical calculations.