Continuous rotational cutting of laminations for electric drives: Cutting process and tool setups for rotational cutting of laminations

Rotational cutting of stator and rotor laminations has the potential to bridge the gap between laser cutting in the production of prototypes and high-speed punching in mass production. Furthermore with this process, a technological answer to the production of ever thinner stator and rotor laminations can be found in which high-speed punching is reaching its technical limits. In this paper the process for rotational cutting of thin electric sheets is described in general and various concepts for tooling setups are presented. In addition it is described how the deviating process chain in the manufacture of cutting cylinders leads to a change in the product geometry.