美标花键中术语翻译
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 3478.1-1995 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(cF):齿形裕度是相互配合的内、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。5681