Drill bit method and apparatus

Details Drill bit method and apparatus Drill bit method and apparatus

1985-12-02

1986-08-19

Vlachos, Leonidas

Metal working

Method of mechanical manufacture

Repairing

294265, 76101A, 175329, 175413, 407 36, 407 72, B23P 600, B26D 100

Patent

active

046061088

ABSTRACT:
A drill bit has a formation engaging face from which there extends a plurality of stud assemblies having a diamond cutting face thereon. Each of the stud assemblies are mounted within a socket by a close tolerance press fit. A reduced diameter rearwardly extending passageway leads from the rear of the socket back up to the face of the bit so that when the diamond face of the stud assembly becomes worn, a tool can be extended through the passageway to the rear of the socket and into contact with the stud assembly to force the stud assembly from the socket. The stud assembly is then rotated a few degrees to present a new cutting edge to the formation, and pressed back into the socket, thereby returning the drill bit to like new condition.

REFERENCES:
patent: 880773 (1908-03-01), Bannister
patent: 1615969 (1927-02-01), West
patent: 2958119 (1960-11-01), Stansfield et al.
patent: 2976069 (1961-03-01), Meredith
patent: 3075593 (1963-01-01), Holsing
patent: 3498677 (1970-03-01), Morrow
patent: 3537539 (1970-11-01), Adcock
patent: 4200159 (1980-04-01), Peschel et al.
patent: 4265324 (1981-05-01), Morris et al.

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