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我们在加工某零件时遇到如图1所示半径为尺100的圆弧面加工难题。由于受零件结构限制,无法用普通的方法进行加工,为此我们设计了一种特殊铣削装置,较好地解决了生产中的难题,其结构如图2。 1.结构与原理 该装置主要由两部分组成:一部分是一套曲柄摇杆机构,其主要用来实现切削加工中的主运动;另一部分是一套悬挂式刀架,主要用于回程的抬刀动作和刀具的夹紧。曲柄摇杆机构简图如图3所示:曲柄O_2A与机床主轴相联,小摇杆O_2C与刀轴相联。当机床主轴转动时,即曲柄O_2A转动,带动大摇杆O_1c摆动,从而实现小摇杆O_2C的摆动,也即实现刀轴的往复转动。由于刀架安装在刀轴上,刀轴的往复转动带动刀架怍往复转动,从而实现刀具的切削运动(往复转动)。悬挂式刀架结构简图如图2A—A视图所示。刀具切削时
We encountered in the processing of a part shown in Figure 1 radius of 100 feet arc machining problems. Due to the limitation of the structure of the part, it is impossible to process it by ordinary methods. Therefore, we designed a special milling device to solve the problems in the production well, and its structure is shown in Fig.2. 1. Structure and Principle The device is mainly composed of two parts: one is a set of crank rocker mechanism, which is mainly used to achieve the main movement in the cutting; the other part is a set of hanging tool holder, mainly used for the back lift Knife action and tool clamping. Crank rocker mechanism diagram shown in Figure 3: Crank O_2A associated with the spindle, the small rocker O_2C associated with the knife shaft. When the machine tool spindle rotation, that is, crankshaft O_2A rotation, driving rocker O_1c swing, so as to achieve a small rocker O_2C swing, which means that the reciprocating rotation of the knife shaft. Since the tool holder is mounted on the tool spindle, the reciprocating rotation of the tool spindle drives the tool rest 怍 to reciprocate so as to realize the cutting motion (reciprocating motion) of the tool. Hanging tool holder structure diagram shown in Figure 2A-A. Cutting tool