| 摘要 |
<p>A drive unit for driving a press is disclosed. The drive unit uses a hydraulically actuated oil shear brake unit (12) located on one side of a flywheel (144) and a hydraulically actuated oil shear clutch unit (14) located on the opposite side of the flywheel. The brake is normally biased into its applied condition and the clutch is normally biased into its disengaged position. The engagement of the clutch (14) and the release of the brake (12) occur from the same hydraulic pressure source. The amount of overlap between the two units is accurately controlled by varying the biasing loads of the assemblies and accurately setting the stroke of the actuation member for each assembly.</p> |
