Method for producing a compound, rotationally symmetrical component (3) with internal and external teeth consisting of a blank (1) and a toothed body (5), wherein the two parts (1, 5) are designed in the form of a pot and in a first method step are inserted coaxially one inside another with interlocking, mutual support and in a second method step are interlocked together with at least one forming tool (17, 27) applied against the (inner and/or outer) circumference, wherein in the second method step the circumferential surface (14, 14) of said blank (1) is continuously deformed in a rolling forming process in the axial direction and in the radial direction such that the circumferential surface (14, 14) of the blank (1) is deformed to interlock into the tooth bases (10) of the teeth (6) of the toothed body (5).

A method for producing vehicle seat components involves working a semifinished blank in a cutting manner. The method can be carried out easily and at low cost and makes it possible to produce components that require little reworking and also provides a vehicle seat component that is both suitable for reducing crash energies by deformation and has an adequate wear resistance. The method includes local heating of the semifinished blank in the region of an intended cutting line of the vehicle seat components to be cut out and cutting out the vehicle seat components from the semifinished blank along the cutting line during or shortly after the heating.

A method for producing vehicle seat components involves working a semifinished blank in a cutting manner. The method can be carried out easily and at low cost and makes it possible to produce components that require little reworking and also provides a vehicle seat component that is both suitable for reducing crash energies by deformation and has an adequate wear resistance. The method includes local heating of the semifinished blank in the region of an intended cutting line of the vehicle seat components to be cut out and cutting out the vehicle seat components from the semifinished blank along the cutting line during or shortly after the heating.

A cassette for a bicycle may include a plurality of sprocket portions joined together into a single unit. The cassette may include a cavity formed in the large end of the cassette. A related manufacturing method may include joining a first generally planar sprocket portion having a plurality of connector portions extending transverse to the plane of the first sprocket portion, to a second generally planar sprocket portion, e.g., by fusing at least one of the connector portions to the second sprocket portion.

A cassette for a bicycle may include a plurality of sprocket portions joined together into a single unit. The cassette may include a cavity formed in the large end of the cassette. A related manufacturing method may include joining a first generally planar sprocket portion having a plurality of connector portions extending transverse to the plane of the first sprocket portion, to a second generally planar sprocket portion, e.g., by fusing at least one of the connector portions to the second sprocket portion.

A stamped or fine-blanked, workpiece is inserted in an embossing device, and the burr created on the workpiece during stamping or fine blanking is rounded by way of a die of the embossing device and the height of the rollover created during stamping or fine blanking is decreased using the same stroke of the embossing device by way of which the burr rounding is carried out.

With the method for manufacturing a composite brake disc, which includes a brake disc chamber and a friction ring having an inner profiling, a brake disc chamber blank is introduced into the friction ring. The brake disc chamber blank is then formed into the inner profiling via at least one embossing tool. A composite brake disc permitting a good torque transmission between the friction ring and the brake disc chamber can be manufactured in a cold-forming manner in this way. The forming-in can take place in a hammering manner, in particular by successively implementing a plurality of embossing steps in the region of different profile gaps of the inner profiling. Axial stops can also be simultaneously produced on forming-in. The axial stops serve to stop the brake disc chamber and the friction ring (3) are prevented from axially sliding apart.

With the method for manufacturing a composite brake disc, which includes a brake disc chamber and a friction ring having an inner profiling, a brake disc chamber blank is introduced into the friction ring. The brake disc chamber blank is then formed into the inner profiling via at least one embossing tool. A composite brake disc permitting a good torque transmission between the friction ring and the brake disc chamber can be manufactured in a cold-forming manner in this way. The forming-in can take place in a hammering manner, in particular by successively implementing a plurality of embossing steps in the region of different profile gaps of the inner profiling. Axial stops can also be simultaneously produced on forming-in. The axial stops serve to stop the brake disc chamber and the friction ring (3) are prevented from axially sliding apart.

A method for producing a shaped part may include providing a first layer consisting of a first sheet metal material and at least a second layer consisting of a second sheet metal material, forming a preliminary composite comprising the first layer and the at least second layer, plating the preliminary composite, and forming the preliminary composite to obtain the shaped part using a flow turning, compression or deep drawing method. The plating may be done before or during the forming process. At least one of the first layer or the second layer may be heated for the plating and/or the forming. The shaped part may be formed by compressing the preliminary composite with a pressing body, and the pressing body may be moved parallel or perpendicular to an axis of symmetry during the compression.

Provided are a protrusion forming device, a protrusion forming method, and a formed article, with which a height equal to or greater than the plate thickness is possible, the edges are sharp, and cracking can be prevented. This protrusion forming device is characterized by being equipped with a die unit provided with a die hole, and a punch unit having a large punch part with a size such that this part cannot be inserted into the die hole, and a small punch part that protrudes from the large punch part toward the die unit and can be inserted into the die hole, and characterized in that the workpiece is deformed by pressing a portion of the workpiece arranged between the die unit and the punch unit toward the die unit by means of the punch unit, thereby forming a protrusion.