Method for the production of a rotor for an electrical machine, as well as a rotor produced in accordance with said method

摘要

The invention relates to a method for the production of a rotor for an electrical machine, in particular for a transverse-flux machine, having the following features: annular pole structures are produced which form the radially outer circumferential region of the rotor; at the same time, permanent magnets are inserted into corresponding cutouts in a soft-iron ring which forms the pole collector, so that permanent magnets and soft-iron elements follow one another alternately in the circumferential direction of the pole structure, the cutouts being oversize in comparison with the permanent magnets, so that gap spaces remain; an insulating material which is magnetically non-permeable and is at the same time adhesive (glue) being applied to the surfaces of the permanent magnets and of the soft-iron elements; the cutout is filled with glue in the liquid state; the volume of the glue is at least equal to the volume of the relevant gap space; the permanent magnets are pushed into the cutouts and thus into the liquid glue as far as their final positions, the glue rising up in the gap spaces and filling them; The invention is characterised by the following features: a covering mask which has cutouts (mask cutouts) through which one permanent magnet in each case can be passed is placed on the end surface of the soft-iron ring.