螺旋双曲面齿轮修形及啮合特性

为了改善螺旋双曲面齿轮啮合特性,对小轮齿面进行修形设计.用抛物线齿廓的产形齿条展成修形插齿刀齿面,模拟插齿刀和被加工齿轮的啮合运动关系,建立齿轮齿面的数学模型;根据两齿面在啮合过程中连续相切条件,建立了考虑安装误差的轮齿接触分析(TCA)模型;齿轮副的啮合仿真结果表明,刀具齿廓抛物线修形可以获得中凸的抛物线传动误差,调...

Study on meshing characteristics of helipoid gears with surface modification

The modification of tooth surface of pinion was applied to improve the meshing characteristics of helicoid gears.The modified shaper tooth surface could be generated by an imaginary rack cutter with the parabola profile,and the derivation of the mathematical of helicoid gears was developed by simulating the meshing kinematics between the shaper and the generated gear.By considering the assemble errors,the tooth contact analysis model was established on the conditions of continuous tangency of two contact surfaces.The results of computerized simulation of meshing and contact show that,the convex type transmission error can be produced by the modification of rack cutter profile,the amplitude and symmetry of transmission error can be changed by modulating the modification parameters;and the crossing angle has a great effect on the contact ratio,the contact ellipses and the sensitivity of assembly errors of the helicoid gears.