它是外花键的齿根圆，和内花键的内圆(齿顶圆)。
It is the root circle of the external spline or the inside circle (tooth tip circle) of the internal spline.
它是外花键的外圆(齿顶圆)，和内花键的齿根圆。
It is the outside circle (tooth tip circle) of the external spline or the root circle of the internal spline.
内花键的尺寸是固定的，外花键根据不同的配合采用不同的尺寸。
The internal spline is held to basic dimensions and the external spline is varied to control the fit.
齿形裕度：齿形裕度(cF)是相互配合的内、外花键的渐开线齿廓超过结合部分的径向距离。
Form Clearance (cF) is the radial depth of involute profile beyond the depth of engagement with the mating part.
通过外花键冷滚压精密成形的变形过程分析及适当假设，建立外花键冷滚精密成形滚压接触面积的数学模型。
The deformation process of external spline cold rolling was analyzed according to the suitable assumption. The mathematic model of contact area of external spline cold rolling was founded.
所述外齿轴套与轴之间为花键连接。
The outer gear shaft sleeves are in splined connection with shafts.
所述外齿轴套与轴之间为花键连接。
The outer gear shaft sleeves are in splined connection with shafts.
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