Rotor for an electric machine with improved mountability of a rotor laminated core and production method therefor

Method for producing a rotor for an electric machine, wherein the rotor has a plurality of magnetic poles with a pole angle lying in between and a rotor laminated core with n axially adjacent sub-cores, wherein the magnetic poles of at least two sub-cores are twisted in relation to one another by a gradation angle, comprising the steps of

• a) clamping a rotor shaft of the rotor in an assembly device in an angular position with an index i, which is defined by a depression with an index i in the rotor shaft or in a disc mounted on the rotor shaft,
• b) mounting a sub-core with the index i on the rotor shaft,
• c) rotating the rotor shaft into an angular position with the index i+1, which is defined by a depression with the index i+1 in the rotor shaft or in the disc mounted on the rotor shaft, using the assembly device, wherein the depression with the index i+1 is spaced apart from the depression with the index i by an angular distance
• ∝
• i
• ,
• i
• +
• 1
• =
• k
• ·
• ∝
• p
• +
• ∝
• ST
• wherein k is an even number, and
• d) recursively repeating steps b) and c) with an ascending index i until all of the sub-cores are mounted, starting with the index i=1 in step a) and ending with the index i=n in step b).