Method and means of manufacturing spirally fluted tubes

Details Method and means of manufacturing spirally fluted tubes Method and means of manufacturing spirally fluted tubes

1984-12-13

1986-01-28

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

Spherical tool

72 78, B21D 1504

Patent

active

045663017

ABSTRACT:
A method and apparatus for the manufacture of spirally fluted tubes and which comprises a rotatable die for receiving the tube longitudinally therethrough during the forming operation for controlling the outer diameter thereof, a clamping apparatus for engaging the outer periphery of the tube and mounted on a movable base member for pulling the tube through the die, forming tools carried by the die for selectively exerting pressure against the outer periphery of the tube during the longitudinal movement thereof, and a reciprocal forming tool chuck apparatus engagable with the forming tools for controlling the inwardly directed pressure thereof against the tube to produce variable depth spiral grooves therealong.

REFERENCES:
patent: Re19655 (1935-07-01), Reimann et al.
patent: 1203306 (1916-10-01), Brinkman
patent: 1957387 (1934-05-01), Cassady
patent: 1983074 (1934-12-01), Durell
patent: 3486357 (1969-12-01), Raisch
patent: 3662578 (1972-05-01), Gleason et al.
patent: 3780556 (1973-12-01), Johnson
patent: 3791000 (1974-02-01), Kunze
patent: 4373366 (1983-02-01), Tatsumi

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