Through designing the bending die for the Sanxia motor copper tube, discussed on the defects that prossibly appeared in the small radius bending tube, and proposed the preventive measure.

• 结合三峡电机铜管弯曲模具结构设计,对小半径铜管弯曲过程中可能出现的缺陷进行了探讨,提出了预防措施。