Another notch in the belt for Schuler with new, state-of-the-art system unmatched in the world

    When a large Chinese manufacturer of electric motors and generators decided it was time to move beyond manually operated presses to produce its motor laminations, they called Schuler, which delivered advanced technological solutions and turnkey delivery.

    Schuler built the system from scratch — from the un-coiler to the blanking press stamping the lamination blank, all the way to the subsequent notching of the rotor and stator laminations and their fully automated de-stacking process.

    In fact, with Schuler’s technology, the customer was able to progress from four to five electric motor laminations to approximately 35.

    Centrally controlled from one location

    The laminations are used to build large industrial motors or generators, which are implemented in steel mills or wind power stations with gears. The system can be quickly changed over to produce other sizes. A changeover, for which Schuler provides the basic equipment, can be carried out in less than half an hour.

    The system is centrally controlled from one location: via touchscreen using a Windows-based visualization system. This easy-to-operate system, developed by Schuler, allows the operator to enter parameters such as stroke, speed, press force and shovel movement.

    Secret of the success

    The secret of this press is its extreme rigidity, which is required to achieve high precision in the final products. In light of the press force of 400 tons, this rigidity plays an important role, as it minimizes the deflection both at the press bed and at the slide.

    It took about one-and-a-half years from the time the order was placed until the system was delivered. The linear notching cell was built at Schuler’s Weingarten, Germany location, while the lamination blanking press was made at the facility in Erfurt, Germany. In cooperation with Schuler technicians from Dalian, the Weingarten technicians installed the system on location in China mid-year of 2011. The entire installation process took approximately 10 weeks.