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在一般书中,对渐开线花键复合拉刀(即工件的画孔、花键、倒角由一把拉刀形成)的花健部分及圆孔部分的设计资料介绍得比较详尽,而对倒角齿部分的设计一般都略去了。今提供下述设计方法,供读者参考。花键孔倒角的目的,通常是为了去除毛刺,有时是为了保证有一个较为可靠的圆孔工艺基准,便于下道工序加工。在标准OB1104-72中,对渐开线花键孔没有作倒角的规定。为了简化拉刀设计的计算,建议渐开线花键孔倒角数值沿键槽高度方向标注,如图中的C_o这
In the general book, the design details of the involute spline composite broach (ie, the painted hole, the spline and the chamfer of a workpiece are formed by a broach) are described in more detail, The design of chamfered teeth is generally omitted. Now provide the following design methods for readers reference. Spline hole chamfering purposes, usually to remove burrs, and sometimes to ensure that there is a more reliable basis for round hole process to facilitate the next process. In the standard OB1104-72, involute spline hole without chamfering provisions. In order to simplify the calculation of the broach design, it is suggested that the involute spline hole chamfering value be marked along the height of the keyway, as shown in the figure C_o