Single‑Press Multi‑Station Stamping for Motor Iron Cores Multi‑Process Production Solution for Motor Laminations

Motor iron cores are assembled by stacking silicon‑steel laminations. Stator and rotor laminations feature complex profiles with teeth, slots and holes, which cannot be finished in a single stamping operation and require multiple sequential processes. Single‑press multi‑station stamping represents a mature production solution for such parts.

Motor laminations are characterized by complex geometry, numerous processes including punching and blanking, stringent precision requirements, and huge batch‑size demand. Minor dimensional errors in teeth and slots will degrade the performance of stacked iron cores.

On a single‑press multi‑station line, dies for successive operations are arranged on one press bolster. Silicon‑steel strip is fed into the first station and proceeds through each stamping position. 3‑axis manipulators transfer workpieces between dies for continuous stamping under one‑time clamping.

This solution delivers prominent advantages. First, high precision: accurate part placement by 3‑axis manipulators guarantees consistent lamination dimensions, ensuring tight stacking and reliable core performance. Second, high efficiency: processes are centralized on one press to sustain high takt for mass‑volume production. Third, labor‑saving: automatic inter‑die transfer eliminates manual handling, lowering labor intensity and improving operational safety. Furthermore, optimized nesting layout improves material utilization for costly silicon‑steel sheets and brings tangible economic benefits.

Nevertheless, solution selection depends on product specifications and press layout. Alternative schemes should be considered for extra‑large laminations or excessive processes that cannot fit within a single press bolster. The standard workflow is to define press and die configuration according to product technology before implementing automation.

To conclude, single‑press multi‑station stamping with 3‑axis manipulator transfer is a proven option for motor lamination production featuring multi‑process requirements, high precision and large output.

Guangdong Ruihui Intelligent Technology Co., Ltd., a national Specialized, Refined, Differential and Innovative “Little Giant” enterprise headquartered in Dongguan with over 20‑year stamping‑automation experience, employs more than 400 staff including over 80 R&D engineers. Ruihui single‑press multi‑station stamping lines are well‑proven in the motor industry. 3‑axis manipulators are configured to match lamination dimension and precision requirements with well‑tuned press timing sequence to realize continuous multi‑process lamination production. Nearly 5,000 sets of Ruihui‑manufactured equipment operate globally. The company cooperates with well‑known OEMs and Tier‑one suppliers such as BYD, Geely, Volkswagen, Tesla, BMW, Mercedes‑Benz, Honda and Jaguar Land Rover and accumulates rich experience in motor‑component stamping.