Method and means of manufacturing spirally fluted tubes
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United States of America Patent
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-
Jan 28, 1986
Issued Date -
N/A
app pub date -
Dec 13, 1984
filing date -
Sep 7, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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