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根据谐波齿轮传动基本理论,建立谐波传动局部啮合仿真的计算模型。已知原始曲线采用四力作用式模型计算得出,柔轮齿形曲线采用渐开线曲线,根据包络法计算出刚轮齿廓,并求解柔轮齿廓的运动轨迹。在此基础上,完成谐波传动全图和局部啮合仿真,并对谐波传动的特性进行论证。最后通过局部啮合图形对谐波传动过程进行干涉研究。结果表明:谐波传动采用不等移距变位,可以很好地控制轮齿啮合侧隙和啮合深度。柔轮变位系数越大,侧隙越大;柔轮径向变形量与模数比越大,侧隙越小。
According to the fundamental theory of harmonic gear drive, the calculation model of local meshing simulation of harmonic drive is established. It is known that the original curve is calculated by using the four-force model. The involute curve of the involute curve of involute curve is used to calculate the tooth profile of the rigid wheel according to the envelope method and the motion trajectory of the tooth profile of the flexible gear is solved. Based on this, the whole drawing of harmonic drive and the local meshing simulation are completed, and the characteristics of harmonic drive are demonstrated. Finally, the meshing pattern is used to study the harmonic transmission process. The results show that the harmonic drive has unequal displacement and can control the gear meshing backlash and engagement depth well. The greater the flexspline coefficient of displacement, the greater the backlash; the greater the flexural radial deformation and modulus ratio, the smaller the backlash.