The manufacturing process of motor stator and rotor lamination cores has a significant impact on the performance of the motor. In the production of motor stator and rotor lamination cores, the direct stacking process and the large rotation process are two different techniques, each with its own characteristics and application scenarios.
01 Direct Stacking Process
The direct stacking process is a more conventional method, where the laminations are stacked directly on top of each other without any angular rotation.
In a progressive die, during the rotor or stator blanking step, the laminations are directly punched into the blanking die cavity. Each lamination is fixed together by the protruding riveting parts on the laminations.
The direct stacking process offers high production efficiency and cost advantages.
02 Large Rotation Process
The large rotation process involves rotating the laminations at a certain angle during stacking to compensate for the cumulative errors caused by uneven material thickness, thereby improving the magnetic performance of the motor.
Since its inception, Yuma Precision has used molds with rotation processes, which can implement a certain angle of rotation stacking inside the mold according to product characteristics and customer requirements. This ensures the perpendicularity, parallelism, and concentricity of the core. In the large rotation process, laminations can be rotated and riveted at large arbitrary angles such as 45°, 60°, 72°, 90°, 120°, and 180°.
The large rotation process is suitable for applications with high precision and performance requirements. It can improve the magnetic performance, dimensional accuracy, and dynamic balance of the core. However, it is relatively more complex, with higher requirements for equipment and technology.
Overall, the main difference between the direct stacking process and the large rotation process lies in the stacking method of the laminations. The choice of the appropriate process depends on the specific requirements of the motor and the manufacturing conditions.
