Abstract: In a flow-forming-machine having a rotatable spindle, a rotary drive for the spindle, and a pressure tool fitted to one of the spindle end faces, an axially movable counterpressure support for a workpiece is placed on the pressure tool, the counterpressure support being axially aligned with the spindle and having opposed sides. At least two rotatable pressure rollers are movably guided on a machine frame in a radial direction with respect to the spindle, while a pivot arm is provided on both the sides of the spindle and/or the counterpressure support. Each pivot arm is pivotal around an axis parallel to the longitudinal axis of the spindle by means of a powered drive. At least two pressure rollers are adjustably located on each pivot arm, and one of the pressure rollers is selectively positionable in an operable position and fixable at will for each pivot arm.

Abstract: A flow-roller machine comprises a machine frame, a rotatable spindle, a rotary drive for the spindle, a compression tool attached to a face end of the spindle, an axially displaceable pressure pad aligning with the spindle for a workpiece put in place on the compression tool, and at least two rotatable compression rollers that, guided in the machine frame, can be advanced in radial direction of the spindle. The spindle together with its rotary drive and the pressure pad are displaceable in axial direction of the spindle relative to the machine frame and relative to the compression rollers.

Abstract: A metal spinning machine with at least one roller holder, the roller holder being mounted exchangeably on a tool rest system with a roller rotatably borne by it. The tool rest system permits the roller to be displaced in at least two coordinate directions relative to a workpiece to be formed by spinning. The workpiece can be mounted on a rotatable metal spinning machine spindle with a rotationally symmetrical shaping tool. The metal spinning machine is equipped with a means limiting the force which can be exerted by the roller on the workpiece.

Abstract: Disclosed are a method, apparatus and tool for the manufacture of a deep-bed wheel rim from a hollow cylindrical preform. In the method the metal preform is shaped to the deep-bed rim in a single mounting on a single tool of several parts, and the constriction of the middle part of the preform to make the bed is performed with concentric rotation of tool and preform. The side portions of the preform are widened to make the bead flanges by a radial shifting of the axis of rotation of the preform together with a tool part shifting appropriately in the plane perpendicular to the axis of rotation to make the bed and the bead seat. The pressing at least during the widening takes place inwardly in a single radial direction, the direction of the axial shift corresponding to the pressing direction. The invention furthermore relates to an apparatus for the practice of the method. According to the invention, this apparatus is a pressing machine with two spindles which bear a tool in common.

Abstract: Apparatus for the production of sunken shapes in the form of regular or irregular cogs and/or markings on the outer circumference of rotationally symmetrical sheet-metal workpieces. The apparatus includes at least one rotatable spindle with a workpiece holder and at least one applicable pressure roller, witha punch ring which can be superimposed in the spindle's axial direction onto the outer circumference of the workpiece, is concentric with the workpiece, and is rotatable therewith,at least one embossing punch which is held radially displaceably in a corresponding sliding guide in the punch ring and whose length in the radial direction is greater than the radial thickness of the punch ring by at least the radial depth of the indentations, andan intermediate ring which radially externally surrounds the punch ring and the one or more punches guided therein, is mounted floatingly on the punch ring, and can have a radially inwardly directed force applied to it unilaterally by the pressure roll.

Abstract: The hub part of a flat disk is clamped between the jaws of a chuck and a protruding circumferential part is formed against the chuck by a roller so that the formed material is distributed axially off-center with respect to the hub part. The formed material is then flattened by a further roller to form a cylindrical preform which is likewise axially off center with respect to the hub part. The preform is formed by a last roller to provide a circumferential area with a final profile for guiding a belt.

Abstract: Process and apparatus for producing a folded seam connection along a joint between cups made of sheet metal having flanges of folded seam connection and forming a workpiece, in particular a vibration damper, wherein at least one folding tool and the workpiece with the folding flanges, which are pressed on each other, are moved relative to one another. The workpiece is rotated around a rotating axis traversing the workpiece in an essentially perpendicular manner with respect to the plane of the joint. The folded seam connection is produced by rolling over the folding flanges once or several times by at least one folding roller. In the plane of the joint, the folding roller can be swung around relative to the workpiece and/or pressed against the latter. The process and the seaming machine offer the option to simply pass over interruptions of the folded seam connections by providing a correspondingly configured guide surface for the folding roller.

Abstract: Method of manufacturing a belt pulley from a metal disk, e.g. a multiple-V-belt pulley, toothed belt pulley, flat belt pulley, etc., having a hub and an area that is provided with a profile which is basically hollow cylindrical and has a smooth or crowned outside. In a first operational step the metal disk is given a wave-like profile in its circumferential area and in following operational steps the respective final profile is completed. Known methods require numerous operational steps and a great force input to carry out the forming. Applicants' method permits high-quality belt pulleys to be manufactured from metal disks at a comparatively low amount of labor and cost involved in the working of the method.