我厂生产分配式油泵,其中关键零件内凸轮的曲线加工比较困难。该零件是由六支相同的曲线均布在零件内圆上,根据这一特点,采取靠模每转完成一支曲线的仿形加工,也就是说靠模与工件之间传动比为6:1。这样对保证六支曲线的一致性及均布性有很大好处。我们在M131W万能外圆磨床上增加一套工具,解决了这一工艺关键。零件的几何精度及油泵性能都比较理想。现将此方法介绍如下: 零件简图如图1。参数用θ与ρ表示按每半度为间隔给出θ及对应的ρ。h为升程。则: I plant distribution pump, including the key parts of the cam curve processing more difficult. The part is composed of six identical curves are evenly distributed on the inner circle of the part. According to this feature, a profiling process is carried out to form a curve per cam. That is to say, the ratio between the master and the workpiece is 6: 1. This is a great benefit to ensure the consistency and uniformity of the six curves. We have added a set of tools to M131W Universal Cylindrical Grinder to solve the key of this process. Parts geometry and pump performance are more ideal. Now this method is introduced as follows: Parts diagram shown in Figure 1. The parameters θ and ρ are given as θ and corresponding ρ at every half-degree intervals. h is the lift. then: