Abstract:With the rapid development of intelligent manufacturing, the modern CNC pipe bender is needed to improve its flexible processing ability to get improvement. As to the three roll push bending craft, its numerical simulation model was built by the numerical simulation software ABAQUS based on the real pipe bending structure, and the mesh sensibility analysis method was used. Then the simulation model was verified by experiment in three aspects: forming procedure, wrinkle on the start bending area, springback radius. The results show that the error between the simulation value and experiment value of the wrinkle on the start bending area is less than 4%, and that of the springback is less than 5.5%.