Drill bit assembly for releasably retaining a drill bit cutter
Abstract
A drill bit assembly is provided for releasably retaining a polycrystalline diamond compact drill bit cutter. Two adjacent cavities formed in a drill bit body house, respectively, the disc-shaped drill bit cutter and a wedge-shaped cutter lock element with a removable fastener. The cutter lock element engages one flat surface of the cutter to retain the cutter in its cavity. The drill bit assembly thus enables the cutter to be locked against axial and/or rotational movement while still providing for easy removal of a worn or damaged cutter. The ability to adjust and replace cutters in the field reduces the effect of wear, helps maintains performance and improves drilling efficiency.
- Inventors:
-
- Austin, TX
- Edgewood, NM
- Issue Date:
- Research Org.:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- OSTI Identifier:
- 874630
- Patent Number(s):
- 6427791
- Assignee:
- The United States of America as represented by the United States Department (Washington, DC)
- Patent Classifications (CPCs):
-
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21C - MINING OR QUARRYING
- DOE Contract Number:
- AC04-94AL85000
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- drill; bit; assembly; releasably; retaining; cutter; provided; polycrystalline; diamond; compact; adjacent; cavities; formed; house; disc-shaped; wedge-shaped; lock; element; removable; fastener; engages; flat; surface; retain; cavity; enables; locked; axial; andor; rotational; movement; providing; easy; removal; worn; damaged; ability; adjust; replace; cutters; field; reduces; effect; wear; helps; maintains; performance; improves; drilling; efficiency; drill bit; cavities formed; /175/299/
Citation Formats
Glowka, David A, and Raymond, David W. Drill bit assembly for releasably retaining a drill bit cutter. United States: N. p., 2002.
Web.
Glowka, David A, & Raymond, David W. Drill bit assembly for releasably retaining a drill bit cutter. United States.
Glowka, David A, and Raymond, David W. Tue .
"Drill bit assembly for releasably retaining a drill bit cutter". United States. https://www.osti.gov/servlets/purl/874630.
@article{osti_874630,
title = {Drill bit assembly for releasably retaining a drill bit cutter},
author = {Glowka, David A and Raymond, David W},
abstractNote = {A drill bit assembly is provided for releasably retaining a polycrystalline diamond compact drill bit cutter. Two adjacent cavities formed in a drill bit body house, respectively, the disc-shaped drill bit cutter and a wedge-shaped cutter lock element with a removable fastener. The cutter lock element engages one flat surface of the cutter to retain the cutter in its cavity. The drill bit assembly thus enables the cutter to be locked against axial and/or rotational movement while still providing for easy removal of a worn or damaged cutter. The ability to adjust and replace cutters in the field reduces the effect of wear, helps maintains performance and improves drilling efficiency.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}
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