| 摘要 |
The invention is concerned with the translational movement of components (21) with the aid of an enclosed cam (40), arranged on a peripheral cam carrier (33), for mechanically carrying along the components which are to be moved backwards and forwards by means of the cam in a working direction and a return stroke direction, the said components being carried along by means of drivers (34) which rest on cam faces and preferably have rollers (26, 27) or drums as components which interact with the cam, at least one of the components resting on a cam face which is to be movable under force. It is proposed that the contact force exerted by the components be changed during one cycle of the cam in such a way that in the region of the reversal points (UT, OT) the contact force of at least the component which transmits the respective direction of movement is increased to such an extent that it corresponds at least to the mass force resulting from the braking and accelerating of the part to be moved, the component being held in contact with the cam faces with a minimum force outside the area of the reversal points. <IMAGE> |
