Roller cutter drill bit and method of forming

Details Roller cutter drill bit and method of forming Roller cutter drill bit and method of forming

1988-07-13

1989-12-19

Parker, Roscoe V.

Metal tools and implements, making

Machines

Drill-forming or sharpening

76108A, 29800, B21K 5702

Patent

active

048874930

ABSTRACT:
A rolling cutter (24) for a rotary drill bit (10) having cutting inserts or elements (52) mounted within sockets (54) in a so-called full shrink process. The rolling cutter (24) is heated to a temperature over around 500.degree. F. in a controlled inert atomsphere in an enclosed heat chamber (71) and the inserts (52) are positioned by gravity within the sockets (54) in a slip fit for retention in an interference fit by shrinkage of the cutter body (25).

REFERENCES:
patent: 2687875 (1954-08-01), Morlan et al.
patent: 3621550 (1971-11-01), Colestock
patent: 4360069 (1982-11-01), Davis
patent: 4744270 (1988-05-01), Vezirian

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