| 摘要 |
A forging machine is disclosed having two pairs of opposed rams uniformly and angularly spaced around a workpiece feeding axis. Each ram has two working hydraulic actuator pistons for moving the ram in a working stroke, and a single retracting hydraulic actuator piston for retracting the ram. Two pump units are provided, one opposite the other, on opposite side of the machine. Each pump unit services two rams, one from each of the two pairs of rams, in order that the rams may be simultaneously driven in working and retracting strokes to forge a workpiece being fed along the workpiece feeding axis.
|
