Abstract: A stretch rolling method and a stretch rolling unit can roll out any gripping ends and uses the narrowest possible installation space. In the stretch rolling method, a workpiece is successively fed to at least two passes of a stretch rolling unit of a gripping device, wherein the workpiece is rotated by 180° about an axis of rotation lying perpendicular to the main direction of extent of the workpiece between the first pass of the two passes and the second pass of the two passes.

Abstract: The present invention relates to a forge rolling device (1) for the bending forge rolling of a component (2), in particular of a component blank, having a first forging roll (10) with a first axis of rotation (R), and a second forging roll with a second axis of rotation, wherein each of the forging rolls (10) has, on its surface (11), a forge rolling contour (12) that runs at least partially around its axis of rotation (R), said forge rolling contours (12) corresponding to one another, in order to form a component (2) passed between the forging rolls (10) in a passage direction (D). This forming can be bending with or without cross-sectional change. In this case, the forge rolling contours (12) are configured so as to bend the component (2), passed between the forging rolls (10), in at least one direction transversely to the passage direction (D) of the component (2), at least by means of one subregion (13) of the forge rolling contours (12).

Abstract: This invention describes both a method and apparatus to practice a method which produces a strip-like pre-material from metal using rollers which have a roll gap in which the metal strip is discontinuously rolled in successively steps between the same two rollers with the metal strip being also recalled, but the recalled section of the metal strip is shorter than the circumference of the rollers. In this manner the surface quality of the metal is improved, especially relating to stamping of coins and metals.

Abstract: A work roll for use in rolling apparatus for producing from a metal blank sheet articles having a deformed cross section and comprising, for example, a plate portion, and a plurality of upright walls formed on one surface of the plate portion integrally therewith and arranged as spaced apart from one another, such as flat heat exchange tube component members, heat sinks and lead frames. The work roll assures more simplified production work and provides surface finishes with higher accuracy than conventionally. The work roll comprises different kinds of disks having different diameters and arranged alternately on an axis into juxtaposed layers as secured to one another. Large disks 20A, 20B, are arranged at respective portions not forming the upright walls, and small disks 21A, 21B smaller than the large disks 20A, 20B in radius by an amount corresponding to the height of the upright walls are arranged at respective portions for forming the upright walls.

Abstract: A vibration control apparatus (20) and method for a calender (18) for controlling vibration between two or more rolls (ex. 22, 24) which controls vibration induced thickness variations in a medium (27) exiting from the nip. The apparatus (20) includes a frame (19), a first and second rolls (22, 24) mounted relative to the frame (19), and a force generator (32), such as an electromechanical active actuator, servo-hydraulic actuator, controllable semi-active damper, Active Vibration Absorber (AVA), or Adaptive Tuned Vibration Absorber (ATVA), provides cancelling forces to control vibration between the first and second roll (22, 24) thereby, controlling such vibration induced thickness variations in the medium (27). Preferably, the apparatus (20) includes at least one sensor (ex.

Abstract: This flaw-removal device prevents overlooking of flaws in the automatic flaw-cutting process by rectifying the twist of a wire-shaped metal drawn from a cannon-shaped wire supply stand, further promoting efficiency in removing remaining flaws by applying the automatic flaw-cutting process and removing the uncut flaws by hand. In this invention, a twist-rectifying drum 3 is installed in front of a flaw-detecting device 4. It then becomes possible to rectify the twisting of the wire-shaped metal by winding the wire-shaped metal installed on a cannon-shaped wire supply stand around the twist-rectifying drum in a length longer than one turn of the coiled wire-shaped metal so that the wire-shaped metal is freely mounted on the drum. It also becomes possible to remove an uncut flaw by hand by installing a flaw-check and removal site 10 having a specified span between drawing dies 8 and a wire-drawing drum 9, and by stopping the portion of the wire-shaped metal having uncut flaws at the site 10.

Abstract: Method and apparatus for roll forming and marking sheet metal. Sheet metal is embossed with an identifying relief pattern as the sheet metal moves through the nip between first and second forming rollers of a roll-forming machine. More particularly, sheet metal is embossed with first and second embossing rollers juxtaposed so that there is a nip therebetween. Sheet metal moves through the nip between the first and second embossing rollers as the sheet metal moves through the nip between first and second forming rollers. Sheet metal products are easily and economically marked with permanent identifying relief patterns.

Abstract: A roll forging machine includes an automatic stock feed which receives the stock in a receptacle from a conveyor and then swings the stock to a horizontal feed position after sensing the temperature of the stock. If the stock temperature is insufficient for proper forging the receptacle swings to a dump position to return the stock to a furnace. If the stock temperature is sufficient the receptacle in the horizontal position is indexed into the forging rolls and to place the stock into a stock gripper of a transfer. The stock gripper is mounted on a grip slide for movement in the "X" direction aligned with the direction of the roll passes. The grip slide is in turn mounted on a carriage for movement in the "Y" direction transverse the direction of the roll passes. Both the grip slide and the carriage are driven electrically by respective servomotors in turn driving timing belts to which the carriage and grip slide are clamped.