Assembly method for a rotor
AssigneeDr. Ing. h.c. F. Porsche Aktiengesellschaft
InventorPeter Wurster
Life of this patent
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Abstract
A rotor (1) with a rotation axis (2) is provided for an electric drive machine (3). The rotor (1) has a plurality of rotor assemblies (4), each of which has a plurality of laminated cores (5) and a number of magnets (7) corresponding to a pole pair arrangement (6). The rotor also has a rotor shaft (8) on which the rotor assemblies (4) are fixed. The rotor assemblies (4) are positioned on the rotor shaft (8) such that they are rectified in accordance with their axial runout (9), while taking into account the pole pair arrangement (6). The rotor can reduce a thermally induced change in imbalance.
Claims8
An assembly method for a rotor (1), comprising:
- providing a plurality of laminated cores (5);
- measuring the laminated cores (5) to determine relative concentricity and axial runout;
- providing magnets (7);
- respectively connecting one of the laminated cores (5) to a corresponding number of the magnets (7) to form a rotor assembly (4) with a specified pole pair arrangement (6);
- providing a rotor shaft (8) having opposite longitudinal ends and a longitudinal center part between the longitudinal ends;
- positioning the rotor shaft (8) and the rotor assemblies (4) in relation to one another so that the rotor assemblies (4) that have greater eccentricity are positioned closer to the longitudinal ends of the rotor shaft (8) and the rotor assemblies (4) that have lesser eccentricity are closer to the longitudinal center part of the rotor shaft (8);
- and
- fixing the rotor shaft (8) and the rotor assemblies (4) to one another to form a rotor (1), the rotor assemblies (4) being positioned on the rotor shaft (8) when positioning the rotor shaft (8) and the rotor assemblies (4) in relation to one another such that they are rectified in accordance with respective axial runouts (9) determined when measuring the laminated cores (5), while taking into account the pole pair arrangement (6).
Dependencies are inferred from the claim text.