Rock bit manufacturing method

Details Rock bit manufacturing method Rock bit manufacturing method

1991-12-24

1993-03-02

Parker, Roscoe V.

Metal tools and implements, making

Blank or process

Drill

29466, 82 111, E21B 1008

Patent

active

051899329

ABSTRACT:
The method of making a roller cone rock bit wherein a main body having a tool joint adjacent one end and a plurality of leg stubs adjacent the other end, has the outer surfaces of those leg stubs on a common conical locus tapering longitudinally inwardly from the radially outer extremity to the radially inner extremity. A like number of cone bases have their trunnions emplaced in respective recesses in a common fixture, in which the recesses are oriented with respect to one another in the same manner as is desired for the relative orientation of the trunnions on the finished rock bit. The end surfaces of the leg extensions which are integral with these trunnions are then simultaneously machined to lie on a common conical locus corresponding to that of the outer surfaces of the leg stubs. The trunnions are removed from the fixture, and each of the adjoining leg extensions has its machined end surface mated with an welded to a respective one of the outer surfaces of the leg stubs.

REFERENCES:
patent: 4158973 (1979-06-01), Schumacher, Jr. et al.
patent: 4187743 (1980-02-01), Thomas
patent: 4276946 (1981-07-01), Millsapps, Jr.
patent: 4711143 (1987-12-01), Loukanis et al.

Affiliated with

Also associated with

Rating

Rock bit manufacturing method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rock bit manufacturing method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rock bit manufacturing method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-120160