|
root form diameter(dFf)是渐开线起始圆吧?base diameter是基圆直径。: K/ K5 S+ d1 b3 t; | z& ~
下面是ISO 21771-2007 5.4.1的一段话' Z3 d( M7 V! b/ W) R
“The root form diameter, dFf, is the start of the involute portion of the profile. For an external gear it is the
: X6 L8 P$ j1 v% O3 k9 d8 B# vgreatest of the base diameter, db, or the diameter of the intersection of the flank with the root fillet or trochoid. \% x& n- @* e$ i9 W6 S
(taking into account undercut if necessary)”
0 c: V( d& W; m1 P8 a5 W& k/ `2 @英语不好,翻错了请轻拍:渐开线起始圆是齿形渐开线起点所在的圆。对外齿轮来说最好就是基圆直径,或齿侧与过渡圆角的连接点(如果有根切,需要考虑在内)。; ]. U2 c. J& s% k# y
问题:翻译有没有问题?* @' d0 A( I+ I: B
如果没问题,渐开线起始圆真的越靠近基圆越好吗,靠太近渐开线齿轮好加工吗? |
|