Abstract: A method and a device for spin forming includes a workpiece set in rotation with a spindle and at least one outer roller is positioned at an outer side of the workpiece. With material thinning, an axially extending lateral region of the workpiece is shaped. At least one inner roller is positioned at an inner side of the workpiece with an inner support, which is displaceable axially and radially relative to the axis of rotation independently of the outer roller. The inner support with the inner roller and an outer support with the outer roller are displaced individually with a CNC control unit, forming at the lateral region a defined wall thickness profile with different wall thicknesses between the at least one outer roller and the at least one inner roller.

Abstract: The invention relates to a method and a forming system for producing a gear part through a rotational forming. According to the invention provision is made in that in a preforming step a rotationally symmetrical workpiece is set into rotation about its center axis and, at least through axial feeding and passing of at least one forming roller, a stretch-flow forming is carried out, wherein a cylindrical circumferential wall with a defined target wall thickness is shaped which is smaller than a basic wall thickness of the workpiece. Subsequently, in a finish-forming step the preformed workpiece is clamped onto an inner mandrel with external toothing and set into rotation and at least one profiled toothed roller is fed radially, by which the cylindrical circumferential wall, whilst substantially maintaining the target wall thickness, is formed into the external toothing of the inner mandrel, wherein a drum-shaped toothed region with a splined toothing is shaped.

Abstract: The invention relates to a device and a method for forming, in which at least one spindle is driven in a rotating manner by means of a rotary drive, a workpiece is received on the spindle by means of a clamping means and clamped on the spindle and at least one forming roller is fed axially and/or radially relative to the workpiece in order to carry out a spinning or flow-forming process. In accordance with the invention provision is made for the spindle and the clamping means to be combined to a changing unit which is adjustable transversely to the axis of rotation, wherein the changing unit is adjusted between a forming position and a set-up position.

Abstract: The invention relates to a method and a device for incremental forming of a metal workpiece, having at least one spindle, on which the workpiece is clamped, and at least one spindle drive, with which the at least one spindle is set in rotation with the workpiece and/or at least one forming roller is set in rotation relative to the workpiece, wherein the at least one forming roller is advanced radially and/or axially relative to the rotating workpiece by way of at least one actuator. According to the invention, a computer-based controller is provided which records multiple machine parameters via sensors, which parameters comprise at least a rotation speed of the spindle, a position of the forming roller and forming forces and/or an advancement speed of the forming roller, and process parameters and/or workpiece parameters are also recorded by the controller, and the controller creates at least one data set in which the machine parameters are assigned to the process and/or workpiece parameters.

Abstract: The invention relates to a method for shaping a workpiece having a drum-type peripheral wall, on the inner face of which an inner profile featuring longitudinal ribs is formed by feeding at least one profiling roll to said inner face. According to the invention, at least one rotatably mounted profiling roll is fed to an inner face of the peripheral wall of the workpiece, and said at least one profiling roll rotates relative to the inner face of the peripheral wall such that the inner profile is formed in the inner face in a non-cutting manner.

Abstract: The invention relates to a forming machine for the spinning/flow forming of a workpiece, having a machine bed, a headstock, a main spindle rotatably mounted on the headstock, having a flow forming mandrel, which is provided to receive the workpiece, a support, which carries at least one machining tool, and which is axially displaceable relative to the main spindle in a longitudinal direction of the machine bed. Furthermore a main spindle drive for driving the main spindle in rotation and a feed drive for displacing the support are provided. The main spindle drive has at least two drive motors, each having a drive pinion. The main spindle has a driving gear, which can be driven by the drive pinions of the drive motors.

Abstract: The invention relates to a method and a forming system for producing a gear part through a rotational forming. According to the invention provision is made in that in a preforming step a rotationally symmetrical workpiece is set into rotation about its center axis and, at least through axial feeding and passing of at least one forming roller, a stretch-flow forming is carried out, wherein a cylindrical circumferential wall with a defined target wall thickness is shaped which is smaller than a basic wall thickness of the workpiece. Subsequently, in a finish-forming step the preformed workpiece is clamped onto an inner mandrel with external toothing and set into rotation and at least one profiled toothed roller is fed radially, by which the cylindrical circumferential wall, whilst substantially maintaining the target wall thickness, is formed into the external toothing of the inner mandrel, wherein a drum-shaped toothed region with a splined toothing is shaped.

Abstract: The invention relates to a flow-forming machine and a forming method for producing a wheel having a rim from a workpiece, with a spinning mandrel, the outside of which is configured for forming the rim, a counter-mandrel, wherein the workpiece is clamped on the spinning mandrel or the counter-mandrel, a rotary drive and at least one compression roller, which can be advanced against the workpiece for forming the rim. According to the invention, it is provided that the spinning mandrel has a sleeve-like perimeter element, which can be displaced axially during forming. A controller is provided, by means of which, while the rim is being formed, the at least one compression roller and the perimeter element of the spinning mandrel can be displaced axially relative to the workpiece in a coordinated manner.

Abstract: The invention relates to a method and a device for spin forming, wherein a workpiece is set in rotation by means of a spindle and at least one outer roller is positioned at an outer side of the workpiece. With material thinning, an axially extending lateral region of the workpiece is shaped. According to the invention, it is provided that at least one inner roller is positioned at an inner side of the workpiece by means of an inner support, which is displaceable axially and radially relative to the axis of rotation independently of the outer roller. By means of a CNC control unit, the inner support with the inner roller and an outer support with the outer roller are displaced individually, wherein there is formed at the lateral region a defined wall thickness profile with different wall thicknesses between the at least one outer roller and the at least one inner roller.

Abstract: The invention relates to a method and a device for producing a shaped part from a circular blank, wherein the circular blank is rotated and at least one compression roller is radially applied to an outer edge of the circular blank, said compression roller having a circumferential shaping groove. The outer edge of the circular blank is compressed to form a thickened region, which is shaped according to the shaping groove of the compression roller to form a thickened edge contour. With the radial compression, at least two axial shaped rollers are applied to an outer region of the circular blank, which cooperate when shaping the edge contour. According to the invention, at least in a starting phase of the radial compression, the two axial shaped rollers are applied to the thickened region at an axial shaping distance to one another, which distance is smaller than an axial width of the shaping groove of the compression roller, wherein the thickened region is axially compressed back.

Abstract: The invention relates to a device and a method for forming, in which at least one spindle is driven in a rotating manner by means of a rotary drive, a workpiece is received on the spindle by means of a clamping means and clamped on the spindle and at least one forming roller is fed axially and/or radially relative to the workpiece in order to carry out a spinning or flow-forming process. In accordance with the invention provision is made for the spindle and the clamping means to be combined to a changing unit which is adjustable transversely to the axis of rotation, wherein the changing unit is adjusted between a forming position and a set-up position.

Abstract: The invention relates to a method and a device for incremental forming of a metal workpiece, having at least one spindle, on which the workpiece is clamped, and at least one spindle drive, with which the at least one spindle is set in rotation with the workpiece and/or at least one forming roller is set in rotation relative to the workpiece, wherein the at least one forming roller is advanced radially and/or axially relative to the rotating workpiece by way of at least one actuator. According to the invention, a computer-based controller is provided which records multiple machine parameters via sensors, which parameters comprise at least a rotation speed of the spindle, a position of the forming roller and forming forces and/or an advancement speed of the forming roller, and process parameters and/or workpiece parameters are also recorded by the controller, and the controller creates at least one data set in which the machine parameters are assigned to the process and/or workpiece parameters.

Abstract: The invention relates to a method for shaping a workpiece having a drum-type peripheral wall, on the inner face of which an inner profile featuring longitudinal ribs is formed by feeding at least one profiling roll to said inner face. According to the invention, at least one rotatably mounted profiling roll is fed to an inner face of the peripheral wall of the workpiece, and said at least one profiling roll rotates relative to the inner face of the peripheral wall such that the inner profile is formed in the inner face in a non-cutting manner.

Abstract: The invention relates to a forming machine for the spinning/flow forming of a workpiece, having a machine bed, a headstock, a main spindle rotatably mounted on the headstock, having a flow forming mandrel, which is provided to receive the workpiece, a support, which carries at least one machining tool, and which is axially displaceable relative to the main spindle in a longitudinal direction of the machine bed. Furthermore a main spindle drive for driving the main spindle in rotation and a feed drive for displacing the support are provided. The main spindle drive has at least two drive motors, each having a drive pinion. The main spindle has a driving gear, which can be driven by the drive pinions of the drive motors.

Abstract: The invention relates to a method for reshaping a workpiece comprising a central axis, a radial inner region, and a radial outer region, in which the radial inner region of said workpiece is reshaped by means of a punch and a die by a drawing operation in the axial direction with formation of an axial shaped section. Provision is made for the workpiece, the die, and the punch to be rotated about the central axis during the reshaping process by a drawing operation and for the radial outer region of said workpiece to be subjected, during reshaping by a drawing operation of the rotating workpiece, to the action of at least one shaping roller such that a flow of material in the direction of the radial inner region of said workpiece is caused or aided. The invention further relates to a device for reshaping a workpiece.

Abstract: The invention relates to a process for forming a pipe portion, in which process a base having an opening and having an inwardly projecting collar is formed. It is provided that the pipe portion is made to rotate, that the pipe portion is drawn in by means of a forming roller, with the base being formed by the drawing-in process, that an inwardly projecting material thickening is formed integrally in the base and that an opening is made in the base in the region of the inwardly projecting material thickening, wherein the inwardly projecting collar is formed by at least part of the inwardly projecting material thickening. Furthermore, the invention relates to an apparatus for forming a workpiece.

Abstract: A method for stretch-flow forming, in which a tubular workpiece is arranged around a spinning mandrel, set into rotation and formed by advancing at least one forming roller. A wall thickness of the tubular workpiece is reduced and the tubular workpiece is lengthened, as spinning mandrel use is made of a universal spinning mandrel with different external diameters in the axial direction for producing cylindrical and/or conical and/or cambered hollow parts of different design. during forming the forming roller and the spinning mandrel are moved relatively in the axial direction with respect to the workpiece, and, for the purpose of designing varying diameters and/or wall thicknesses of the workpiece, the forming roller is moved relatively in the axial direction with respect to the spinning mandrel.

Abstract: The invention relates to a method for reshaping a workpiece comprising a central axis, a radial inner region, and a radial outer region, in which the radial inner region of said workpiece is reshaped by means of a punch and a die by a drawing operation in the axial direction with formation of an axial shaped section. Provision is made for the workpiece, the die, and the punch to be rotated about the central axis during the reshaping process by a drawing operation and for the radial outer region of said workpiece to be subjected, during reshaping by a drawing operation of the rotating workpiece, to the action of at least one shaping roller such that a flow of material in the direction of the radial inner region of said workpiece is caused or aided. The invention further relates to a device for reshaping a workpiece.

Abstract: The invention relates to a process for forming a pipe portion, in which process a base having an opening and having an inwardly projecting collar is formed. It is provided that the pipe portion is made to rotate, that the pipe portion is drawn in by means of a forming roller, with the base being formed by the drawing-in process, that an inwardly projecting material thickening is formed integrally in the base and that an opening is made in the base in the region of the inwardly projecting material thickening, wherein the inwardly projecting collar is formed by at least part of the inwardly projecting material thickening. Furthermore, the invention relates to an apparatus for forming a workpiece.