Abstract: Disclosed herein is a die assembly comprising a first attachment block having a passage, an inlet port and an exit port; where the passage is operative to transport a molten material from the inlet port to the outlet port; a die; and a conduit; where the conduit comprises a passage that is operative to transport the molten material from the first attachment block to an entry port of the die; where the die comprises a first outer tube; and an extrusion pin that comprises a post and fins; where the extrusion pin is located in the first outer tube using the fins and where the post extends from the fins in a direction away from the entry port of the die; and where the post comprises one or more passages; where at least of these passages open to the atmosphere to provide for pressure equalization; and a travelling template; the template being operative to contact an extrudate that emanates from the die and to transfer a texture to a surface of the extrudate by virtue of pressure applied by a guide tube to the extr

Abstract: A processing apparatus for processing a workpiece by transferring the workpiece between a ram and a die block. At least one recessed die of a plurality of dies molds the workpiece into a bottomed tubular shape by a punch. A punch, among a plurality of punches, that has entered the recessed die exits from the recessed die with the formed workpiece being attached to the punch, together with the workpiece. Since the workpiece is transferred from the die block to the ram when the punch exits from the die, a step of moving the ram forward relative to the die block to transfer the workpiece from the die block to the ram can be omitted accordingly.

Abstract: A method for forming a hard disk drive base plate with an extended height is described. The method may include forming an initial hard disk drive base plate, forming a filler shim, and forming a shroud. The method may also include joining the initial hard disk drive base plate, the filler shim, and the shroud to extend a height of walls of the formed initial hard disk drive base plate, and to form the hard disk drive base plate with the extended height.

Abstract: A direct double-action extrusion press includes a main crosshead to which an extrusion stem is fixed; a main cylinder having a main ram that advances the main crosshead and pressing on a billet; a piercer cylinder disposed inside the main ram and drives a mandrel; a plurality of side cylinders that retracts the main ram via the main crosshead; and a hydraulic circuit for supplying hydraulic oil to the main cylinder, the piercer cylinder, and the side cylinders. Cylinder chambers of the plurality of side cylinders on a side where the hydraulic oil is discharged when the main crosshead is advancing have a pressure-receiving area equal in total to that of a rod side chamber of the piercer cylinder. During billet extrusion, the hydraulic circuit causes fluid communication through the rod side chamber of the piercer cylinder and each cylinder chamber of the plurality of side cylinders on the side where the hydraulic oil is discharged.

Abstract: An injection molding apparatus for injection molding articles from plastic, has a guide that extends along a plurality of stations, including at least one injection molding station, and along the guide at least one slide can be driven successively through the stations, wherein the or each slide transports the article to be produced from station to station. The slide or the plurality of slides altogether have associated therewith a plurality of motors which are seated on the slide or the slides. The motors have associated and moved therewith lines for supplying electrical power and/or at least one line for signalling, which are coupled with a stationary electrical power source or a stationary controller, respectively. At least one of the lines is guided from one motor to another. The motors are coupled with the at least one line in respect of the transfer of electrical power and/or signals.

Abstract: In a method of making a tubular body, material is pressed through a die of a forming tool into a first mold cavity disposed in downstream relationship to the die to produce a first end piece. A mandrel is then moved in a direction of the die to thereby displace the mold cavity in the same direction and to extrude a tubular center piece to adjoin the first end piece. The mandrel is then replaced by a mold having a second mold cavity to mold a second end piece to adjoin the center piece.

Abstract: A method of producing a hollow valve comprises the step for forming material having a blind hole along its axis, the step for extruding the material in a shaping hole in a die downward and the step for lowering a lower part of a pin to an upper part of a smaller-diameter portion of the shaping hole to allow the material to plastically flow downward through a gap between the lower part of a pin and the smaller-diameter portion of the shaping hole thereby molding a primary intermediate of the hollow valve having a stem and a head at the upper end of the stem through which a hole is formed.

Abstract: A method of producing a hollow valve comprises the step for forming material having a blind hole along its axis, the step for extruding the material in a shaping hole in a die downward and the step for lowering a lower part of a pin to an upper part of a smaller-diameter portion of the shaping hole to allow the material to plastically flow downward through a gap between the lower part of a pin and the smaller-diameter portion of the shaping hole thereby molding a primary intermediate of the hollow valve having a stem and a head at the upper end of the stem through which a hole is formed.

Abstract: A method for forming hollow profiles is disclosed. In one exemplary method, a hollow profile is guided through a die in a processing direction and fixed by a mandrel such that at the die, the hollow profile has a material flow velocity in this processing direction (2), in which the method the mandrel has a drawing velocity in the processing direction that is greater than the material flow velocity.

Abstract: An extrusion tool for an extrusion press for manufacturing seamless, eccentric pipe sections—in particular pipe sections with circular outer and inner contours—from extrusion blocks, in particular from extrusion billets. The extrusion tool contains a container with a chamber with a longitudinal axis MR which accommodates the extrusion block, an extrusion stem which is introduced into the container chamber, and features a dummy block, a mandrel arm with a longitudinal axis MD forming the inner wall of the pipe-section, and a die with an opening with a longitudinal axis MM forming the outer wall of the pipe section. The mandrel arm is arranged such that it can be pushed out of the dummy block through the extrusion block up to or into the die opening. The mandrel arm in the position for extrusion is arranged eccentric in cross-section with respect to the container chamber and the die opening and the die opening is arranged eccentric in cross-section with respect to the container chamber.

Abstract: An extruded article which has at least one hollow portion and changes in cross-section along a direction of an extrusion axis is manufactured by the method. The method includes the step of advancing a punch to extrude a billet while controlling a movement of a mandrel for defining an inner periphery of the hollow portion relative to a die for defining an outer periphery of the extruded article.

Abstract: A frame-like traveling beam carrying a hollow press ram of a metal extrusion press and in which a traverse carrying a piercing mandrel is guided, has the side walls of that traveling beam progressively reduced toward a midpoint from each end along the guide path of the traverse. Surprisingly that reduces the spread of the side walls under load and limits the degree to which the mandrel may be guided eccentrically.

Abstract: By using a variable section extrusion die set which includes a die set (24) displaceable in a first direction orthogonal to an extrusion direction of a molding material and in a second direction perpendicular the first direction and adapted to vary an area of an extrusion molding hole (31) through which the molding material is extruded, and a mandrel (27) reciprocally movable in and out of said extrusion molding hole in the extrusion direction and provided on an outer peripheral portion thereof with a tapered portion (27B) which is gradually reduced in outer configurational dimension from one direction of the reciprocally moving direction to the other, said die set being moved to deform the extrusion molding hole (31) while pressing the molding material against said die set (24), and the tapered portion of the mandrel (27) being reciprocally moved in and out of the extrusion molding hole, extrusion molding of a tubular molding is thereby accomplished which varies in outer configurational dimension and inner c

Abstract: This invention relates to a method of extruding pipes on horizontal presses, and in particular relates to a method of extruding pipes wherein a removable centering plug is provided to prevent displacement of the central guide rod during the initial stages of pipe extrusion. The centering plug is adapted to fit around the guide rod and within the extrusion orifice. The centering plug is concentrically fitted within the extrusion orifice and is capable of being extruded through the extrusion orifice.

Abstract: An improved cooling system is provided in a piercing mandrel used in extruding tubular material made of metals having extruding temperatures above the annealing temperature of H13 tool steel such as brass, copper and the like. The piercing mandrel has a replaceable tip fitted on the end of the stem portion for the mandrel. A cooling channel system is provided at the distal end of the stem and comprises a disperser for dispersing cooling fluid in equi-distant, multi-radial directions as the cooling fluid flows out of the stem distal end. An annular channel is provided at the perimeter of the mating faces of the bore in the tip and the stem distal end and which is in communication with the disperser to direct radially cooling fluid annularly of the perimeter of the mating faces at the stem distal end. The cooling channel system further comprises about the perimeter of the stem distal end a plurality of equi-distant, longitudinally directed channels which are in communication with the annular channel.

Abstract: An aluminum extruding machine which includes four guide rods connected between two opposite upright blocks above the machine base, a fixed die holder, a material carrying barrel moved on the guide rods relative to the die holder to carry molten aluminum, a push member with a tubular plunger moved along the guide rods to extrude molten aluminum out of the die holder, a center rod moved by a cylinder through the material carrying barrel into the center of the die holder to define an annular cavity within the die holder for the passing of extruded molten aluminum, and a cutter assembly driven by a cylinder to cut off extruded aluminum tube.

Abstract: A method of forming an integral fastener such as a rivet on a sheet metal component such as part of a clutch plate assembly. The method involves placing the metal sheet between a pair of dies so that portion of the sheet overlies a cavity in one die. The other die has an annular working face which surrounds the cavity in immediately adjacent relationship. A biased plunger is arranged for movement relative to both dies and is receivable in the die cavity with clearance. That plunger is engaged with the sheet portion on the side thereof opposite the cavity so as to apply a bias force to that portion which acts in the direction of the cavity. The annular working face is then applied to the metal sheet so as to compress an annular zone of that sheet. The combined effect of the bias force and the compression then causes material to yield in the annular zone and to be displaced from that zone to flow into the die cavity to form a hollow fastener in the clearance between the cavity and the plunger.

Abstract: Metal billets trapped in the billet container of an indirect extrusion press are removed by indirect extrusion in the reverse direction until the billet size is reduced sufficiently for the residue to be expelled bodily from the container. The stem used to support the container-closing plug constitutes, or is replaced by a stem for effecting the reverse indirect extrusion.

Abstract: A draw/emboss work station (18) of the invention includes emboss punch apparatus (86) moveable by a lever (340) and a hydraulic system under control of a press slide (34). Pressure sleeve apparatus (92) is slideable with respect to the emboss punch apparatus (86) and is responsive to force applied to it by the press slide (34). An emboss punch head (96) is moved downwardly into a cup-shaped article (14) to bring the article into a draw/emboss die (146) having an interior reduced diameter part (148). The emboss punch head (96) then remains stationary and spaced from the reduced diameter part a predetermined distance to define an annular opening. The pressure sleeve apparatus (92) incuding a pressure sleeve (130) is then forced downwardly into engagement with a shoulder (64) on the cup (14), and forces the cup (14) through the annular opening to thereby simultaneously draw the sidewalls of the cup (14) and transfer the design of the emboss punch head (96) to the inside surface of the cup (14).

Abstract: An indirect extrusion process, and apparatus therefor, for producing an extrusion product from a hot metal billet. A press container is mounted to be substantially axially stationary during extrusion of a billet. A hot billet, a die and a pressure disc are located into the axial throughbore of the container so that the billet is sandwiched between the die and pressure disc, with the pressure disc having a maximum outer diameter between opposite radial faces which is slightly less than the diameter of the axial throughbore to define a diametrical clearance between the pressure disc and the press container. A bolster is located adjacent the pressure disc and is axially fixed to substantially prevent axial movement of the pressure disc in a direction toward the bolster during extrusion. The bolster exerts a relatively insigificant axial force against the container.

Abstract: Double-stem type extrusion method and apparatus used for extrusion-molding rod-like and tubular products. In order to upset a solid or hollow billet (5, 5A) supplied to a container (1), the end of the container (1) which is on the side of a press stem (6) is closed with a blistering-preventing cover (11) which is not moved relatively to the container (1). A pressure is then applied to the billet (5, 5A) from the side of a die (8) to start the yield deformation thereof from the same side thereof. As the yield deformation movement of the billet (5, 5A) progresses, the air existing between the inner surface of the container and billet (5, 5A) is discharged from the portion of the container (1) which is on the side of the cover (11).

Abstract: A pullback type indirect extrusion press capable of extruding a tubular article, the press including first and second movable platens connected to each other by columns, the movable platens being arranged in front of and behind a fixed platen, a mechanism for producing a extruding force provided above and below or the left and right between the fixed platen and the first movable platen, and a container device and a die stem arranged between the fixed platen and the second movable platen. A piercing cylinder mechanism is provided on the axis of the press on the side of the non-extrusion zone, the piercing cylinder mechanism being provided independently of the mechanism for producing the extruding force.

Abstract: A method and apparatus for cold working a metallic blank having a central hole into a substantially annular or cylindrical article such as an internally and or externally toothed gear, with the method including forcibly inserting a hollow metallic blank at a normal temperature into a die cavity formed between a mandrel placed on a fixed base and a die concentrically surrounding the mandrel so that the blank is plastically deformed between the mandrel and the die; forcibly inserting a subsequent hollow metallic blank into the die cavity while the relative position between the mandrel, the die and the first blank being plastically deformed therebetween is kept unchanged; and urging the subsequent blank against the first blank to extrude the first blank forwardly out of the die whereby the first-said blank is formed into a tubular article.

Abstract: Methods and apparatus for initiating extrusion of elongated hollow product, more particularly cylindrical tubular product, by increasing the space between the end of a mandrel and an opposed extrusion die during extrusion start-up and thereafter gradually decreasing the space to the desired width for extrusion of the product to enhance extrusion initiation.

Abstract: A process and device for drawing tubes by extrusion of a metal billet (4) placed in a receptacle (50) within which ramming of the billet (4) is carried out by first pushing the latter against a ramming insert (63) closing the receptacle (50), then perforating the billet by means of an axial mandrel (7), and finally replacing the ramming insert (63) in the axis of the receptacle (50) by an insert (65) holding a die. Drawing is carried out by extrusion of the billet. During ramming of the billet (4), a boss (41) is formed on the face of the latter turned towards the ramming insert (63) which is inscribed within an orifice (66) in the die and which has a plane face centered on an axis diverging from the drawing axis. The ramming insert (63) is provided for this purpose with an impression (8) which has recessed the desired shape.

Abstract: A blank material having a configuration corresponding to the flange part of the article is first punched by a punch member and a die member from a planar strip material, the blank is press-formed into a hollow article by further pressing the punch member and die member and projecting a mandrel having outer diameter corresponding to the inner diameter of the hollow article. Then, the punch member, die member and mandrel are returned to their original position thereby to deliver a completed article. The above one cycle operation is continuously repeated per shift of the strip member by one article distance.

Abstract: A mandrel cleaning device capable of automatically performing cleaning operation in an extrusion press of the type which has a pressurizing stem for pressing a billet in a container toward a die and a mandrel axially slidable in and relative to the pressurizing stem for determining the internal shape of a hollow extruding material, the mandrel cleaning device having a rotary mechanism for rotating the mandrel about its axis, a grinder mechanism adapted to grind a tip portion at the fore end of the mandrel, and a transfer mechanism for moving the grinder mechanism toward and away from the mandrel.

Abstract: In an indirect extrusion press of the type wherein a die stem is connected to a press axis on the rear end surface of a press platen and extends towards a container, an intermediate frame type indirect extrusion press including an intermediate frame movably interposed between the press platen and the container in the direction of the press axis, encompassing the die stem and equipped with a guide section in its longitudinal direction, a driving device for moving the intermediate frame in the direction of the press axis and a guide mechanism placed between the intermediate frame and press structures such as a press bed, a column and the like and guiding the intermediate frame in the direction parallel to the direction of the press axis.

Abstract: In an indirect extrusion drawing press comprising a fixed crosspiece to which is fixed a tubular ram which is perforated by an axial orifice for the removal of the wire, a fixed bearing member, a movable crosspiece which is moved by a main jack bearing against the bearing member, a container in which is provided the bore of the billet, and which is interposed between the movable crosspiece and the ram, and a container bottom which is placed on the movable crosspiece along the axis of extrusion and which presses against the container during extrusion, the container being driven towards the ram by the movable crosspiece. A mechanism is provided for fixing the container relative to the movable crosspiece during extrusion so that auxiliary jacks, provided for moving the container independently of the crosspiece, can be used during extrusion to assist the main jack.

Abstract: An extrusion die for forming a multi-passage, elongated tubular member having transverse passageways formed between adjacent longitudinally extending passageways during the extrusion of the tubular member.

Abstract: A process for the extrusion of tubes or similar hollow sections from a billet is disclosed within the billet is forced against a hollow extrusion die surrounding a mandrel and a mandrel support. A core passing through the extrusion billet moves in the direction of extrusion with the billet and is led through the mandrel into the space inside the resultant hollow section. The process of the present invention relieves the die of the high stresses which can otherwise lead to early failure of the die.

Abstract: In tube extrusion presses, there are two steps in production. Firstly, a mandrel pierces a hole through the center of a billet, the tip of the mandrel ending up just within the opening of the extrusion die. Secondly, the now hollow cylindrical billet is extruded through the die and over and around the tip of the mandrel to produce a tube. To limit the movement of the mandrel, stroke-limiting rods are provided which pass through bores in a part attached to the mandrel and in a fixed part of the press. The rods can be held fast in one or both of these bores, or released to slide through them, depending on the stage reached in the extrusion process.

Abstract: In the direct extrusion of tubing wherein the extruded tube or tubing is immediately submerged into water after extrusion and having a closed leading end, the trailing end thereof in the extrusion press is sealed off from the entrance of water by a crimping device consisting of a tool having a rounded front end which engages and forces through the operation of a piston cylinder assembly one wall inwardly of the trailing end against an opposed wall to form a collapsed double wall cross section.

Abstract: A hydrostatic extrusion process and an apparatus therefor includes a mandrel and a stem which are movable independently of each other, and a seal block which is utilized for increasing the pressure of the pressure medium for performance of the extrusion operation of the billet. A supply device pre-disposes an extrusion die, a billet, pressure medium, and a seal block within a supply unit or sleeve and is capable of being moved from a position exterior of the extrusion apparatus station to a position corresponding to the extrusion station, and in this manner, the time period required for completing extrusion cycles is substantially reduced. Still further, a locking mechanism, including a locking slide and a locking plate, are operatively associated with the mandrel for controlling or limiting the axial movement of the mandrel so as to in turn control the loading and tensioning of the same in order to prevent damage thereto.

Abstract: An extrusion press having a press stem which can be articulated to a limited extent at its base mounting in order to allow the stem to be exactly aligned with a billet containing bore; a centering sleeve provided at one end of the bore to guide the stem; and corresponding convex and concave surfaces at the base mounting which can slide over one another to permit the articulation.

Abstract: A stationary main cylinder, spaced behind a billet-receiving container located behind an extrusion die, contains a ram projecting from the front end of the cylinder. Piercer cylinders are mounted on the opposite sides of the main cylinder and have open front ends from which piston rods extend forward and carry coupling cylinders. A piercer crosshead in front of the ram is rigidly connected to the coupling cylinders behind an extrusion crosshead connected to the ram by means extending past the piercer crosshead. Plungers disposed in the coupling cylinders are rigidly connected with the extrusion crosshead, from which a hollow stem extends forward. A mandrel holder carried by the piercer crosshead extends forward through an opening in the extrusion crosshead for supporting a mandrel in the stem. Means are provided for supplying hydraulic fluid to the cylinders in a predetermined sequence to move the crossheads in unison and also relative to each other during piercing and extruding of a billet.

Abstract: Apparatus and a method of employment thereof for forging cylindrical shells of controlled interdimension wherein a single punch die mandrel and cushion cooperate at a single work station to subject a metal blank to high multi-axial stress sufficient to increase the ductility thereof and permit a completed article to be fabricated during a single continuous pass of the material through the die. Precise control of the interdimension of the desired part is maintained by means precisely shaping the material and maintaining engagement between the end face of the mandrel and the bottom of the work blank during the forging process.

Abstract: A chamber having a first end and a second end and receiving a billet having an aperture therethrough slidably receives through the first end a die. A mandrel slidably extends through the second end of the chamber into the aperture of the billet and has a conical section extending into the zone of deformation of the die. Hydraulic cylinders having piston rods operatively associated with the die and the mandrel advance the die into the chamber through the first end thereof against the billet end, and simultaneously and at the same velocity retract the mandrel from the second end of the chamber, the zone of deformation of the die and the conical section of the mandrel defining a converging annular passageway through which the billet is extruded to produce tubing.

Abstract: A press for hydrostatic extrusion of tubes includes a high pressure cylinder axially displaceable in a press stand with a die insertable into the cylinder and a pressure generating punch insertable into the cylinder to generate the pressure for extrusion. A mandrel is carried by a rod which passes through the pressure generating punch. Seals are provided between the mandrel and the pressure generating punch and between the pressure generating punch and the pressure cylinder. These seals are so located that during the actual extrusion they are arranged in the same transverse plane.