The invention relates to a method for producing a wheel (7) having a rim body (8), which is adjoined by a front flange region (9), which is connected by means of a rim well (10) to an opposite rear flange region (11), which has a circumferential collar (12) that is thickened in comparison with the rim well (10), wherein a preform (5) is formed by casting, which preform is shaped into the finished wheel (7), wherein, in order to produce the wheel (7) having a circumferential material recess (14) that extends in the collar (12) in the shape of a groove along a rear end face (13) of the collar (12) and that has a defined groove depth (T3), the material recess (14) is first produced having a first depth (T1) from a reference point (Z) during the casting of the preform (5) and is then shaped until a second depth (T2) is formed, which is greater than the first depth (T1), wherein each depth (T1, T2) is defined based on a reference plane (F). The invention further relates to a casting mold (1) and to a wheel (7).
Process and casting mold for producing a cast wheel. A core, which remains in the cast wheel and has a circumferential rim, is inserted into a casting mold having at least one lower mold part and an upper mold part moved relative to one another to close casting mold. Core is positioned by at least one positioning element in a predetermined position in casting mold, so that an end region of positioning element is fixed with a force fit or frictional fit in circumferential rim of the core. A free end region of positioning element, which protrudes from circumferential rim of the core, is placed on a contact surface, which is preferably arranged substantially horizontally during operation, of lower mold part during positioning of core in casting mold. Core is positioned in the predetermined position under the action of the force of gravity.
B22C 9/10 - NoyauxFabrication ou mise en place des noyaux
B22D 15/00 - Coulée utilisant un moule ou un noyau dont une partie importante, pour le procédé, est de conductibilité thermique élevée, p. ex. coulée contre refroidisseursMoules ou accessoires spécialement adaptés à cette technique
B22C 9/28 - Moules pour pièces de forme particulière pour roues, cylindres, rouleaux
3.
PROCESS FOR PRODUCING A CAST WHEEL AND CASTING MOULD
Process and casting mould for producing a cast wheel (2'), wherein a core (3) which remains in the cast wheel (2') and has a circumferential rim (17) is inserted into a casting mould (1) having at least one lower mould part (5) and an upper mould part (4), which are moved relative to one another to close the casting mould (1), wherein the core (3) is positioned by means of at least one positioning element (7) in a predetermined position in the casting mould (1), wherein an end region of the positioning element (7) is fixed with a force fit or frictional fit in the circumferential rim (17) of the core (3), wherein a free end region of the positioning element (7), which protrudes from the circumferential rim (17) of the core (3), is placed on a contact surface (8), which is preferably arranged substantially horizontally during operation, of the lower mould part (5) of the casting mould (1) during positioning of the core (3) in the casting mould (1), such that the core (3) is positioned in the predetermined position under the action of the force of gravity.
B22D 15/00 - Coulée utilisant un moule ou un noyau dont une partie importante, pour le procédé, est de conductibilité thermique élevée, p. ex. coulée contre refroidisseursMoules ou accessoires spécialement adaptés à cette technique
B60B 3/06 - Roues pleines, c.-à-d. roues avec corps en forme de disque supportant la charge obtenues en fonderie
Method for producing a wheel (1), in particular a vehicle wheel, wheel (1), and spinning mandrel (14) for producing a wheel (1), comprising a rim body (2) which is adjoined by a front flange region (3), which is connected by way of a rim well (5) to an opposite, rear flange region (4), which has a peripheral collar which is thickened in comparison with the rim well (5) and the remainder of the rear flange region (4), wherein a preform (13) is formed by means of casting or forging, and the preform (13) is formed into the finished wheel (1), characterized in that at least one recess in the material (8) is formed in the rear flange region (4) by means of forging or flow forming in such a way that the rear flange region (4) has a reduced wall thickness in comparison with a peripherally neighbouring region and in that, at least in the region of the recess in the material, a comparatively great material density is achieved, the recess in the material (8) having in the peripheral collar (7) of the rear flange region (4) at least one portion (8') which in the circumferential direction is widened from a vertex (11), which is arranged in the region of a peripheral inner surface (7') of the collar (7), radially inwards to a freely running-out end.
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