An aluminum transducer chassis prepared by a process having the following steps: performing an extrusion using a die and an aluminum billet to create an extruded chassis, wherein the die has a cross sectional shape of the transducer chassis; and cutting the extruded chassis to a plurality of predetermined lengths, each length corresponding to the length of a transducer chassis.

The present invention relates to an extrusion-type connecting rod which is installed between a piston and a crank and can convert the reciprocating motion of the piston into the rotary motion of a crank shaft, an extrusion apparatus for a connecting rod, and a manufacturing method for the extrusion-type connecting rod. The extrusion-type connecting rod may comprise: a first big end having a portion of a crank shaft hole formed on one side and having a seam-line divided surface, which comprises a seam line formed at the time of extrusion, formed on the other side; a second big end, being extrusion-molded simultaneously with the first big end, having the other portion of the crank shaft hole formed on one side, and having a seam-line divided surface, which comprises a seam line formed at the time of extrusion, formed so as to contact the seam-line divided surface of the first big end; a connection part which is extrusion-molded integrally with the second big end; and a small end which is extrusion-molded integrally with the connection part.

An extrusion press die-slide device is equipped with: a fixed frame; a moveable frame that can move linearly but which is supported by the fixed frame in a non-rotatable manner; a first motion conversion mechanism that converts input rotational motion to linear motion and outputs the same to cause the moveable frame to move linearly with respect to the fixed frame; and a second motion conversion mechanism attached to the moveable frame and equipped with a pusher to impart a pressing force to a die of the extrusion press, and which transmits the input rotational motion to the first motion conversion mechanism and converts the input rotational motion to linear motion and outputs the same to cause the pusher to move linearly with respect to the moveable frame.

A method is used to manufacture a drawn tube having a hollow low interior for housing an axle shaft. The method includes the steps of placing a billet into a first die assembly and pressing the billet into the first die to producing a pre-formed billet. The method also includes the steps of moving the pre-formed billet from the first die assembly to a second die assembly and pressing the pre-formed billet into the second die assembly to produce an extruded tube. The method further includes the steps of moving the extruded tube from the second die assembly to a third die assembly and pressing the extruded tube into the third die assembly to further elongate the extruded tube and decrease the thickness of the wall of the extruded tube to of from about 3 to about 18 millimeters to produce the drawn tube having the yield strength of at least 750 MPa.

An adjustment system for adjusting the position of at least one sliding block of a movable crosspiece of a press with respect to the respective column of the press on which the sliding block may slide, a first wedge is integral with the movable crosspiece, a second wedge is sliding on the first wedge, a pin defining an axis and having a first eccentric end accommodated in a cavity provided in the second wedge, a first actuating member adapted to rotate the pin causing the translation of the second wedge along a direction transversal to the axis, a second actuating member adapted to translate the pin from a first locked position to a second unlocked position in which the pin can rotate about the axis.

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.

An extrusion press machine includes an end platen, a die, a container, container cylinders which move the container back and forth, a stem that pushes a billet in the container, and a main cylinder at the front end of the stem is provided and by which the stem can freely slide front and back, the extrusion press machine further including a plurality of hydraulic valves that supply hydraulic oil in the main cylinder to the container cylinders and which operate before the stem and the container retract in movement when discharging compressed air in the container after upset of the billet and further including a hydraulic valve that discharges hydraulic oil in the main cylinder into a tank, the hydraulic valves connected by a hydraulic pipeline, and the main cylinder and the container cylinders being able to be connected.

Disclosed is an impact extrusion can making system that uses induction heating to preheat an extruder punch and an extruder forming die, to increase yield during a cold start. In addition, a highly precise laser measuring device is used to measure dome thickness, so that stroke length and/or position of an extruder and/or extrusion die can be automatically adjusted in a predictive control system. High quality products with high yield are produced using these techniques.

A mold for forging a scroll rotor capable of controlling material flow speed by adjusting a land section, a molding device applying same, and a method for manufacturing the mold. In the mold, a die includes an extrusion unit having a molding space therein and a spiral-shaped extrusion passage provided in the lower portion thereof so as to correspond to a wrap portion disposed in the scroll rotor. A punch is connected to the die to be in close contact with the inner circumference of the molding space and to be able to slide up and down. The lower portion has a shape corresponding to the upper surface of the flange portion of the scroll rotor and a boss portion. The extrusion passage has a land section in direct contact with the extrusion material. The height of a land of the land section varies along the spiral direction.

The invention relates to extrusion and pipe presses (1), comprising a press frame consisting of a cylindrical spar (2) and a counter spar (4) connected thereto, in which a mobile billet container holder (7) supporting a billet container (8), which puts a billet (18) to be pressed, which was introduced by a loading device, into a press position in front of the counter spar (4) with the associated tool (38), and a mobile punch crosshead (6) are provided. In the cylindrical spar (2), a main cylinder, or press cylinder, is arranged, which in the cylinder housing (9) thereof receives a press piston (11), which at the front end thereof that is supported by the punch crosshead (6) is connected to a press punch (19). A compensation tank (15), which delivers hydraulic oil to the press piston (11) by way of a slider plate (28), is assigned to a main cylinder housing (9) connected to a tank line. With an extrusion press such as this, the considerable hydraulic expenditure, and in particular the non-productive time, are to be substantially reduced, while making the structural design more compact and simple at the same time. To accomplish this, the advancing and feed motions of the billet container holder (7) and punch crosshead (6) with press piston (11) are carried out by electromotive force, and both the precompression of the billet (18) loaded into the billet container (8) and the subsequent compression of the billet (18) are done by hydraulic loading of the press piston (11). Electric motors (12, 13) are assigned to the punch crosshead (6) and the billet container holder (7) as adjustment drives. A large-scale filling valve (20) is integrated in the cylinder housing (9) of the main cylinder for loading the press piston (11).