Hydraulic blow forging press

摘要

In the case of a blow forging press which is connected via a quick-action stop valve (27) to a reservoir (28), a predefined forging operation is to be imparted to the workpiece to be compressed in each forging process. To achieve this there is provided, between the quick-action stop valve (27) and the reservoir (28) a metering device (1) with a piston (3) which slides in a cylinder (2) and the piston rod (4) of which acts as a slide, in order to dampen the movement of the piston (3) at the end of the forging process, and in order to release a pipe (16 to 19) for compensating for oil lost by leakage in the upper end position. The swept volume of the cylinder (2) defines the loading and unloading volume of the reservoir (28) and therefore the forging work in addition. <IMAGE>