For powerful electric motors – above all for cars and other forms of electric mobility – the production of stators with copper wires with a rectangular cross-section, so-called hairpins, has become prevalent.
Laser technology has shown itself to be a productive method with high-quality results for two production steps of the stator: stripping and welding of the hairpin ends. Stripping is performed using pulsed processing, which removes all common insulation materials. When joining the hairpins, scanner-guided and camera-based welding with beam oscillation using a laser has proven itself to be a highly efficient method when it comes to speed and use of installation space.
Download this paper to learn how lasers are used in welding electric motor hairpins below:
