滑动摩擦及轴承间隙必导致齿轮机构的齿轮振动

不计齿间及轴颈与轴承间摩擦的经典渐开线齿轮理论认为，若输入扭矩保持恒定，则齿轮机构运行平稳，不会振动。本文的研究充分表明：尽管齿轮机构的输入扭矩保持不变，然而，由于滑动摩擦及轴承间隙的存在，齿轮必产生振动。本文指出，对于具备足够刚性的齿轮机构而言，降低齿间及轴颈与轴承间滑动摩擦系数并减小轴承间隙是抑制齿轮振动的有效措施。

Sliding Frictions and Bearing Clearances Inevitably Leading to the Gear Vibration of a Gearing

The classical involute gearing theory, which omits the effect of sliding frictions between teeth and between bearings and journals, thinks that if the input torque of the gearing is kept constant the gears do not vibrate .It has fully been proved by researches of this article that even though the input torque of the gearing is kept unchanged, the gears surely generate vibration because of the existence of sliding frictions and bearing clearances. This article indicates that decreasing sliding friction coefficients between teeth and between bearings and journals and reducing clearances between bearings and journals are the effective measures for restraining vibration of gears in the gearing with enough rigidity.