图1所示的凸键套常用于滚齿机及其它设备中。由于它是整体的,在磨外圆时为不致碰伤凸键,工件需作240°的往复摆动,因此,通常需采用专用设备进行加工。我们采用图2机构磨削凸键套效果较好。使用时,只要把它装在外圆磨床工作台上,调节好所需要的传动部分和工作机构的所需旋转角度,就可以自动使工作机构反复地进行磨削, The convex key set shown in Figure 1 is commonly used in hobbing machines and other equipment. Because it is a whole, in the outer cylindrical grinding not to bump convex key, the workpiece needs to make a reciprocating swing of 240 °, therefore, usually need to use special equipment for processing. We use Figure 2 mechanism grinding convex key sets better. When used, as long as it is mounted on the cylindrical grinding table, adjust the required part of the transmission and the required rotation of the working mechanism, you can automatically make the working mechanism repeatedly grinding,