The internal spline is held to basic dimensions and the external spline is varied to control the fit.
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。
It is the outside circle (tooth tip circle) of the external spline or the root circle of the internal spline.
它是外花键的外圆(齿顶圆)，和内花键的齿根圆。
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.
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.
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。
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