Apparatus and method for slotting a pipe

B - Operations – Transporting – 23 – D

Patent

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Details

B23D 45/12 (2006.01) B23D 47/04 (2006.01)

Patent

CA 2434993

A method and apparatus for slotting a pipe (22) including a clamping system (40) comprising a clamping surface (59) adapted to engage at least about 50 percent of the pipe circumference and at least about 50 percent of the pipe length in a clamped position and which defines a longitudinal clamping gap (52) oriented to permit the slotting of the pipe therethrough. A first perforating mechanism (158) moves a cutting head (42) comprised of a plurality of cutters (109) toward and away from the clamping gap such that the cutters (100) perforate the pipe wall. A second independently operable longitudinal cutting mechanism (169) moves the cutting head (112) along the clamping gap to further cut the pipe wall by the cutters to form a plurality of discrete slots (30). A third indexing mechanism (162) rotates the pipe about its longitudinal axis in an unclamped position to vary the location of contact between the cutters and the pipe wall about the pipe circumference.

L'invention concerne un procédé et un appareil de mortaisage d'un tube (22) comprenant un système de serrage (40) comportant une surface serrage (59) conçue pour venir en prise avec au moins environ 50 pour cent de la circonférence du tube et au moins 50 pour cent de la longueur du tube en une position d'encastrement et qui définit un espacement (52) de serrage longitudinal orienté de façon à permettre de serrage du tube à travers celui-ci. Un premier mécanisme de perforation (158) déplace une tête coupante (42) comprenant une pluralité de dispositifs de coupe (100) vers et à l'opposé de l'espacement de serrage de sorte que les dispositifs de coupe (100) perforent la paroi du tube. Un second mécanisme de coupe longitudinale (169) pouvant fonctionner indépendamment déplace la tête de coupe (112) le long de l'espacement de serrage afin de couper la paroi dudit tube par les dispositifs de coupe afin de former une pluralité de petites fentes (30). Un troisième mécanisme de mise au point (162) fait tourner le tube autour de son axe longitudinal en une position non encastrée de manière à varier la position de contact entre les dispositifs de coupe et la paroi du tube autour de la circumference du tube.

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