Rock bit assembly method

Details Rock bit assembly method Rock bit assembly method

1986-07-25

1987-12-08

Parker, Roscoe V.

Metal tools and implements, making

Blank or process

Drill

175375, 175413, E21B 1008

Patent

active

047111437

ABSTRACT:
In a method of assembling a roller cone type rock bit, on a body having a tool joint adjacent one end and at least one leg portion adjacent the other end, the leg portion is provided with a longitudinally outer surface which is inclined longitudinally inwardly from its radially outer extremity to its radially inner extremity; on a base for a cone assembly, an end surface is provided configured to mate with the outer surface of the leg portion of the body; a roller cone is rotatably mounted on the base distal the end surface to form a cone assembly, and the end surface of the base is mated with the outer surface of the leg portion; the base is then welded to the leg portion along the juncture of the mating surfaces to mount the cone assembly on the leg portion.

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