Drill bit assembly for releasably retaining a drill bit cutter

Glowka, David A; Raymond, David W

Title: Drill bit assembly for releasably retaining a drill bit cutter

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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:

Glowka, David A ^[1]; Raymond, David W ^[2]

Austin, TX
Edgewood, NM

Issue Date:: 2002-01-01

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

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E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21B - EARTH DRILLING, e.g. DEEP DRILLING
E21B10/633 - independently detachable

E - FIXED CONSTRUCTIONS E21 - EARTH DRILLING E21C - MINING OR QUARRYING
E21C35/1936 - {the picks having a square- or rectangular-section shank}

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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.

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                    Glowka, David A, & Raymond, David W. Drill bit assembly for releasably retaining a drill bit cutter.  United States.

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                    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.

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@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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