文档介绍：以下为美国花键标准主要内容翻译
ANSI -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)。
译者注:这段话的意思是:只有在渐开线终止圆与齿顶圆(或者修缘线的起点所在的圆)之间的花键的齿形为渐开线齿形,其余部分不一定按照渐开线成形。
译者注2:在《GB/T -1995 圆柱直齿渐开线花键》中,将Form Cycle定义为两个圆:内花键的渐开线终止圆和外花键的渐开线起始圆。而在本标准中,将这两个圆统称为Form Cycle,译者将Form Cycle翻译为渐开线终止圆。
Form Clearance (cF) is the radial depth of involute profile beyond the depth of engagement with the mating part. It allows for looseness between mating splines and for eccentricities between the minor circle (internal), the major circle (external), and their respective pitch circles.
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在径向方向上的间隙。齿形裕度是的相互配合的内、外花键之间能够存在一定松动,并且是的内花键的小圆(齿顶圆)、外花键的大圆(齿顶圆)、以及内、外花键各自的节圆之间存在一定的偏心距。
Form Diameter (DFe, DFi) the diameter of the form circle.
渐开线终止圆直径(DFe, DFi):渐开线终止圆所在圆的直径。
Internal Spline is a spline formed on the inner surface of a cylinder.
内花键:在圆柱体的孔的内表面形成的花键。
Involute Spline is one having teeth with involute profiles.
渐开线花键:花键的键齿的齿形为渐开线形式