Apparatus for cutting spiral pipe

Details Apparatus for cutting spiral pipe Apparatus for cutting spiral pipe

1991-02-20

1993-03-16

Larson, Lowell A.

Metal deforming

By tool-couple pressing together adjacent surface portions...

To form helically-seamed tube

72132, 83185, 83 54, B21C 3712

Patent

active

051933748

ABSTRACT:
An apparatus for cutting spirally formed pipe is disclosed. The pipe cutting apparatus has an inner knife positioned inside a pipe and an annular outer knife positioned outside the pipe. The inner knife moves from an inner position within the pipe to an outer position where the knife contacts an interior surface of the pipe during the cutting operation. The inner knife also revolves in an annular pattern about the centerline of the pipe such that a cutting edge of the inner knife contacts the entire interior periphery of the pipe during the cutting operation. The annular outer knife has a cutting edge adjacent an exterior surface of the pipe. The outer knife cutting edge surrounds the pipe and is in a position to overlap the inner knife cutting edge. The inner and outer knives move in the axial direction of the pipe during the cutting operation, and the inner knife cooperates with the outer knife to cut the pipe.

REFERENCES:
patent: 957966 (1910-05-01), Jenkins
patent: 1478692 (1923-12-01), Baranoff
patent: 1635807 (1927-07-01), Amberg
patent: 2749983 (1956-06-01), Rogers
patent: 3268137 (1966-08-01), Martin
patent: 3839931 (1974-10-01), Herpich
patent: 3839933 (1974-10-01), Paramoroff
patent: 3913430 (1975-10-01), van Dijk
patent: 4706481 (1987-11-01), Castricum
patent: 4823579 (1989-04-01), Castricum
patent: 4924684 (1990-05-01), Castricum
patent: 4924684 (1990-05-01), Castricum

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