The text introduces the two choices of inner gear profile curve of the rolling gear drive and the theoretical reasons of the equidistance curve of inner cycloid and the close an; curve.

论述波式滚动活齿传动内齿轮齿廓曲线的两种选择：内摆线的等距曲线、密切圆弧曲线的理论成因。

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Upon the theory of hot elastohydrodynamics about part film load bearing, the sliding and rolling friction forces in gear transmission device can be calculated.

运用部分膜承载热弹流理论计算齿轮传动中的滑动摩擦力和滚动摩擦力。

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But because of the elasticity recovery of metal in rolling manufacturing procedure, the gear form and precision of the spline are influenced.

但是在冷滚轧加工过程中，金属的弹性恢复对花键的最终尺寸精度以及齿形质量有一定的影响。

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