How are hairpin stators actually made? After twisting the free pin ends are contacted according to the winding scheme of the motor. As a rule, this involves 150 to 250 pin pairs to be contacted, which must be clamped together for welding. Since the clamping situation differs from customer to customer, flexible concepts are required flexible concepts are in demand.
How are hairpin stators actually made?
With a line cycle of 60 seconds, approximately 0.05 to 0.2 seconds are given to weld a single pin pair. In addition, a high energy input is required in a short time. Nearby components must not be thermally damaged in the process. Our constellation also uses a powerful and, on top of that, very flexible laser.
It is particularly suitable for components that are difficult to access, which is the case with the hairpin stator. After welding, quality control of all welds is required, for which there are various concepts. In addition to the options available on the market, Gehring has its own,
innovative concept and applied for a property right for it.
Laser welding of copper materials requires comprehensive process know-how. The low absorption of the laser and the high thermal conductivity of copper allow only a small process window. High customer requirements for welding quality must always be kept in mind. This concerns the bond cross-section, the allowed heat input, pores and splashes.
Contact
Sales E-Motive
+49 711 / 3405-0
sales.eu@gehring-group.com
Contact us today and let our experts advise you. Together we will find the optimal solution for your individual requirements in flexible manufacturing. Increase your efficiency with widening!
