Suitable for pre-forming and expanding both sides of the coil after stator winding insertion. This is a dedicated machine designed for coil expansion and preliminary shaping. It adopts PLC program control with a Touchscreen display. After the workpiece is loaded, the machine automatically moves downward and performs slot expansion upon reaching the designated position. Dual servo motors control the process: one servo controls the expansion mold position, while the other controls the expansion size, ensuring high precision. Equipped with an automatic limit function, dual-button start, and photoelectric safety protection switch, it guarantees safe and reliable operation with simple handling.