HYDRAULIC PRESS FOR COMPACTING METAL POWDER

摘要

A hydraulic metallic powder press including a press cylinder and a piston displaceable in the press cylinder. A piston rod is connected to the piston and a seal positioned adjacent the piston rod and at a location where the piston is led out of the press cylinder. A free end of the rod bears a die and is adapted to be introduced into a cavity for compacting metallic powder contained therein. An adjustable sleeve is provided in the press cylinder inwardly of the seal. The sleeve at least partially encloses the piston rod and has an external thread and the press cylinder has an internal thread in mating relationship with the sleeve thread. The sleeve further has a slide. A rotatable gland at least partially encloses the sleeve and has a longitudinal groove therein for guiding the slide. The groove runs in the axial direction of the piston rod and a drive motor is operatively coupled for rotatably moving the gland. Accordingly, the length of the stroke of the die into the cavity is thereby limited.