This paper discuses the phenomenon by lost stability of gearing parameters in considering the gear mesh stiffness, and put forward a criterion of lost stability of gearing parameters.
探讨了由于啮合刚度周期性变化引起的啮合参数失稳现象，得出了相应的啮合参数失稳判据。
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The four-ring reducer is a kind of new typed retarding device with many mesh points, gearing with small difference between the numbers of teeth.