DIN5480花键标准浅析与应用

ANSI B92.1-1970 SAE花键标准 INVOLUTE SPLINES 渐开线花键 Form Circle is the circle which defines the deepest points of involute form control of the tooth profile. This circle along with the tooth tip circle (or start of chamfer circle) determines the limits of tooth profile requiring control. It is located near the major circle on the internal spline and near the minor circle on the external spline. 渐开线终止圆：渐开线终止圆是用于控制齿廓上渐开线的极限距离的圆。渐开线终止圆与齿顶圆（或者修缘线的起点所在的圆）共同限制了所要求控制的渐开线齿廓的范围。渐开线终止圆的位置靠近内花键的大圆（齿根圆）或者外花键的小圆（齿根圆）。