Extrusion press
AssigneeSutton Engineering Company
InventorHelmut B. Huertgen
Life of this patent
Estimating the term…
Abstract
An extrusion press including butt shearing means and cooperating die receiving and holding means carried by the crosshead which supports the free end of the main ram.
Claims20
In an extrusion press including a platen and a movable crosshead which supports the free end of a main ram for movement thereof toward and away from the platen and additionally including extrusion container means for supporting a billet intermediate the platen and the crosshead for extrusion of the billet through an extrusion die under the impetus of extrusion force applied by the main ram to the billet, the improvement comprising:
- a butt shearing means carried by said crosshead;
- said shearing means including a butt shear and a cooperable die support means carried by said crosshead and operable to shear the butt end of such a billet from such a die subsequent to extrusion of such billet in a manner that all reaction forces of the butt shearing are carried by said crosshead.
In an extrusion press, including a platen and a movable crosshead which supports the free end of a main ram for movement thereof toward and away from the platen and additionally including billet container means for supporting a billet intermediate the platen and the crosshead on an axis for extruding such a billet through an extrusion die along said axis under the impetus of extrusion force provided by said main ram to such a billet, wherein subsequent to such extruding, an unextruded butt end of such billet may remain adjacent such die, the combination comprising:
- a butt shear carried by said crosshead;
- and a selectively positionable die receiving means carried by said crosshead for receiving such a die and an attached butt end and for supporting such die and attached butt end for shearing of such butt end from such die by said butt shear in a manner that all reaction forces of such shearing are carried by said crosshead.
In an indirect extrusion operation, wherein a billet container having an axially elongated bore carries a billet in said bore and a movable crosshead axially adjacent one end of said container supports the free end of a main ram for extrusion of such a billet through a die which is passed axially into said bore via the end thereof opposite said one end, and wherein after the extrusion operation a residual billet portion remains within said bore and includes an unextruded butt end of the billet attached to one side of the extrusion die and a length of the extruded form extending through the die and projecting out of the other side thereof, the method of removing such a residual billet portion from the extrusion die comprising the steps of:
- stripping said die and the attached butt end out of said one end of said bore;
- positioning said die and the attached butt end adjacent said crosshead on said axis of extrusion;
- moving said die axially to align the interface between said die and said butt end on a predetermined shear plane adjacent said crosshead and to rigidly support said die with respect to said crosshead;
- shearing said butt end from said one side of said die against reaction surfaces which are supported by said crosshead;
- and pulling said projecting length of the extruded form through said other side of said die.
Dependencies are inferred from the claim text.