Winding off-line is completed on a machine. The equipment is advanced in design. All fixtures are designed for quick change. The same punching piece is changed instantly. The change between different punching pieces is less than 10 minutes. The whole machine is constructed with world-famous components. It has excellent performance and low failure rate. Because no manual transmission is needed, the uniformity of winding is guaranteed, and no paint film is formed after winding off-line. Damage and indentation, groove full rate can reach more than 90%, very suitable for the production of high efficiency small groove motor stator.