| 摘要 |
<p>There is disclosed a mechanical pressing machine in which an unbalanced inertia force, produced during reciprocal movement of a slider, is canceled without producing deflection in the whole of the pressing machine, thereby enhancing dynamic precision. The slider, slidably mounted at a lower portion of a frame, is connected to a dynamic balancer, slidably mounted at an upper portion of the frame, by link mechanisms. A press cam, having a cam surface in contact with cam followers mounted respectively on the slider and the dynamic balancer, is fixedly mounted on a cam shaft. Dynamic balancer cams, each having a cam surface in contact with cam followers mounted respectively on interconnecting points of the link mechanisms, is fixedly mounted on the cam shaft. The dynamic balancer is driven to move in a direction opposite to a direction of movement of the slider, so that an unbalanced inertia force, produced in the moving slider, is canceled by an oppositely-directed inertia force produced in the dynamic balancer.</p> |
