| 摘要 |
PURPOSE: A pipe bending method is provided to form uniform wire thickness and prevent wrinkles or crack when bending a pipe. CONSTITUTION: A pipe bending method is as follows. A pipe(10) is mounted on a rotating die(60) which is coupled to a holder rotating shaft(90) of a holder(80). A rotating punch(50) which is coupled to an upper punch rotating shaft(70) of an upper punch(20) rotates and bends the pipe and, at the same time, the rotating die bends the pipe by being rotated with a rotating die cam drive(31) of a rotating cam drive(30). One end of the pipe is pressed with a cam slide(40) and the pipe is bent.
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