Method and apparatus for bending a tube

Details Method and apparatus for bending a tube Method and apparatus for bending a tube

1978-12-14

1981-04-21

Mehr, Milton S.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

By individually non-deforming clamps

29227, 254 105, B21D 1106, B21D 300

Patent

active

042625157

ABSTRACT:
A tube coil of austenitic or ferritic material is bent into a coil with a steep pitch by clamping the end of the tube section to be bent in clamps located at the ends of two radial arms of the bending apparatus. One arm is then pulled away from the other arm to cause the clamped ends to displace relative to each other while a steeper pitch is imparted. The pulled arm is free to rotate while the clamps are free to pivot in planes tangential to the tube coils. In one embodiment, the clamps can also move radially of the supporting arm.

REFERENCES:
patent: 716683 (1902-12-01), Daniels et al.
patent: 1817877 (1931-08-01), Cawley
patent: 3747895 (1973-07-01), Martin
patent: 3946987 (1976-03-01), Shultz

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