一、前言在设计键宽B≤4的矩形花键时,山于拉刀键齿窄,不好前后齿交错开分屑槽,因此,拉刀往往设计成不开分屑槽或前后齿交错倒角分屑。以这种方式设计的拉刀在拉削时,常常发生键宽尺寸精度超差、键侧面严重刮伤,甚至大块大块的“缺肉”。我厂是生产各种汽车传动轴的专业厂。大 I. Preface When designing a rectangular spline with a key width of B≤4, the teeth on the broach are narrow and the teeth are not crossed before and after the teeth are broken. Therefore, the broach is often designed to be staggered or not Chamfer shaving. Broaches designed in this manner often experience over-accuracy of key-width dimensions, severe scratches on the side of the keys, and large chunks of “missing meat” when broaching. Our factory is a professional factory producing all kinds of automobile transmission shaft. Big