大型压力机的离合制动器的活塞在连接架中运动靠平键做导向(图1)。装配中,我们发现45H9键槽的中心对称度出现图2情况,常常要配台阶键。 经过研究,决定改进工艺,在离开键槽一定位置上(见图2)用数控机床加工出6—φ12H7工艺孔。插键槽 Large presses off the clutch brake piston movement in the connection by the flat key to do the guide (Figure 1). Assembly, we found 45H9 keyway center symmetry Figure 2 situation, often with step keys. After research, decided to improve the process, leaving a certain position on the keyway (see Figure 2) with CNC machining 6-φ12H7 technology hole. Socket slot