Rotor, method for manufacturing a rotor, and electric machine

A method for producing a rotor for an electric machine comprising a substantially cylindrical rotor body formed from a laminated rotor core with a plurality of pockets for receiving rotor magnets, at least a first group of pockets extending in a substantially tangential direction, the method comprising the following steps:

• providing the rotor body, the rotor body having an outer contour portion radially above the pockets of the first group, said contour portion having a contour that deviates from the arcuate contour of the cylindrical rotor body,
• inserting the rotor magnets into the first group of pockets,
• injecting a plastic into the first group of pockets such that the rotor magnets are fixed in the pockets of the first group,
• the injection pressure and temperature of the plastic during injection as well as the radially outer contour of the pockets of the first group and the outer contour portion before the plastic is injected being selected such that
• once the plastic has been injected, the outer contour portions have a contour due to material offset between the outer contour of the pockets and the outer contour portion which substantially corresponds to the arcuate contour of the cylindrical rotor body.