Method of repairing cylindrical workpieces and lathe therefor

Details Method of repairing cylindrical workpieces and lathe therefor Method of repairing cylindrical workpieces and lathe therefor

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/18 (2006.01) B23B 31/10 (2006.01) B23G 1/22 (2006.01) B23P 6/00 (2006.01) E21B 17/046 (2006.01)

Patent

CA 2243940

A method of repairing a drill pipe having first and second connector ends, each of the first and second connectors ends including a threaded portion and sealing portions, with a lathe having a chuck with longitudinally spaced first and second sets of jaws, the method comprising the steps of mounting the drill pipe in a lathe, gripping the first connector end of the drill pipe with each of the first and second sets of jaws, orienting the first connector end by manipulation of the first and second sets of jaws into a working position; and rotating the drilling pipe against a working tool to machine the threaded portion and sealing portion of the first connector end and produce a new threaded portion and sealing portion of the first connector end. A lathe with longitudinally spaced first and second sets of jaws is also disclosed. A device for positioning of subsequent workpieces without repeating alignment steps is also disclosed.

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