Method of machining threaded pipe-ends

Details Method of machining threaded pipe-ends Method of machining threaded pipe-ends

1985-06-19

1987-05-19

Godici, Nicholas P.

Turning

Process of turning

82 4C, 408 80, 408 83, 409185, B23B 100, B23B 516

Patent

active

046657800

ABSTRACT:
The invention concerns a process for machining a joint element for steel tubes, intended in particular for the petroleum industry, containing a truncated surface (2) and at least one screw stop.
One first carries out final machining of a truncated surface (2) that contains the element (1) and premachining of the screw stop or stops of this element; one applies on said truncated surface (2) a collar (11) of the same conicity as that of this surface, installed so as to rotate and move axially relative to the spindle (3) that carries the machining tool or tools (5) of the screw stop or stops; at the same time as one imparts to the joint element (1) a rotary movement relative to said spindle (3), one causes relative axial movement of the tool holder spindle (3) and the joint element so as to carry out final machining of the screw stop or stops of the joint element until the conical collar (11) applied on said truncated surface (2) represents a stop that opposes final relative axial movement of the tool holder spindle relative to the machined element.

REFERENCES:
patent: 2094491 (1937-09-01), Janata
patent: 2211183 (1940-08-01), Tytus et al.
patent: 2218147 (1940-10-01), Greenwood
patent: 2528474 (1950-10-01), Moore
patent: 3124024 (1964-03-01), Pittman
patent: 3561302 (1971-02-01), Keener
patent: 3691882 (1972-09-01), Massey
patent: 3717055 (1973-02-01), Pendleton
patent: 3994516 (1976-11-01), Fredd

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