一、前言凸轮机构的优点是,只需选择适当的凸轮轮廓即可使从动杆得到预定的运动规律,并且其结构比较简单、紧凑和易于综合。因此它被广泛地应用于各种自动机械和控制装置中。然而凸轮的轮廓是曲线,并要求一定的精度和表面粗糙度,因而凸轮加工始终是机械加工工艺中的重大课题之一。以盘形凸轮为例,靠模法需有一个与凸轮形状相似的高精度的靠模及夹具,适用于批量生产;用液压仿形铣床加工,也需一个靠模,机床调整技术比较复杂,也适 I. INTRODUCTION The advantage of the cam mechanism is that it can obtain the predetermined movement rule of the driven rod only by selecting the appropriate cam profile, and its structure is relatively simple, compact and easy to be integrated. Therefore, it is widely used in various automatic machinery and control devices. However, the profile of the cam is curvilinear and requires some accuracy and surface roughness, so cam machining is always one of the major topics in the machining process. For example, the cam plate, the cam mode requires a similar shape and high precision cam with the fixture, suitable for mass production; with hydraulic profiling milling machine, also need a master, machine adjustment technology is more complex, Also suitable