Method and apparatus for manufacturing a corrugated tube

Details Method and apparatus for manufacturing a corrugated tube Method and apparatus for manufacturing a corrugated tube

1994-09-19

1996-06-04

Crane, Daniel C.

Metal deforming

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

By individually non-deforming clamps

7234294, 72367, B21D 1506

Patent

active

055222471

ABSTRACT:
In a method and apparatus for manufacturing a corrugated tube, a tube is clamped by a pair of spaced apart chucks. A local portion of the tube is softened. The chucks are moved in the same direction such that the trailing or rearward chuck moves farther than the leading or forward chuck, thereby imparting an axially compressive force on the tube. Accordingly, a bulge is formed at the softened portion of the tube. The heating and compression cycle may be performed several times to obtain a corrugated tube having a plurality of bulges or waves formed therein.

REFERENCES:
patent: 2347086 (1944-04-01), Curtiss
patent: 4821551 (1989-04-01), Ogino et al.

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