GB2022170A - Roller drill bit - Google Patents

Roller drill bit

Info

Publication number
GB2022170A
GB2022170A GB7917301A GB7917301A GB2022170A GB 2022170 A GB2022170 A GB 2022170A GB 7917301 A GB7917301 A GB 7917301A GB 7917301 A GB7917301 A GB 7917301A GB 2022170 A GB2022170 A GB 2022170A
Authority
GB
United Kingdom
Prior art keywords
pin
aperture
drill bit
cutter
rolling members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB7917301A
Other versions
GB2022170B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SKF AB
Sandvik AB
Original Assignee
SKF AB
Sandvik AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE2823698A external-priority patent/DE2823698C2/en
Priority claimed from DE19782841971 external-priority patent/DE2841971A1/en
Application filed by SKF AB, Sandvik AB filed Critical SKF AB
Publication of GB2022170A publication Critical patent/GB2022170A/en
Application granted granted Critical
Publication of GB2022170B publication Critical patent/GB2022170B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2352/00—Apparatus for drilling

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolling Contact Bearings (AREA)
  • Earth Drilling (AREA)
  • Gripping On Spindles (AREA)

Abstract

The invention provides a roller drill bit having a body (10), a pin (11) extending from the body and a cutter (12) mounted on the pin for rotation about the pin, the cutter being mounted by a rolling bearing (13) having rolling members (16) disposed in radially inner and outer opposed raceway grooves (19, 20) in the pin and cutter respectively. The pin has an aperture (25) extending parallel to the axis of the pin from outside the drill bit body along to and opening into the radially inner raceway groove. The aperture is dimensioned to allow the rolling members of the bearing to pass along the aperture and into the raceway grooves. A plug (26) is fixed in the aperture to locate the rolling members in the raceway grooves. <IMAGE>
GB7917301A 1978-05-31 1979-05-17 Roller drill bit Expired GB2022170B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2823698A DE2823698C2 (en) 1978-05-31 1978-05-31 Roller bit with a filling hole for bearing rollers
DE19782841971 DE2841971A1 (en) 1978-09-27 1978-09-27 ROLLING CHISEL WITH CUTTING ROLLS

Publications (2)

Publication Number Publication Date
GB2022170A true GB2022170A (en) 1979-12-12
GB2022170B GB2022170B (en) 1982-06-09

Family

ID=25774595

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7917301A Expired GB2022170B (en) 1978-05-31 1979-05-17 Roller drill bit

Country Status (10)

Country Link
AU (1) AU532730B2 (en)
BR (1) BR7903396A (en)
FR (1) FR2427460A1 (en)
GB (1) GB2022170B (en)
IE (1) IE48451B1 (en)
IT (1) IT1166825B (en)
MX (1) MX147386A (en)
NL (1) NL7904233A (en)
PL (1) PL121979B1 (en)
SE (1) SE7904516L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552233A (en) * 1982-09-30 1985-11-12 Warren A. Sturm Rotary drill bit seal
US6431293B1 (en) * 1995-12-19 2002-08-13 Smith International, Inc. Dual-seal drill bit pressure communication system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8007104U1 (en) * 1980-03-15 1980-06-12 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt ROLLING CHISEL WITH TAPERED CUTTING ROLLS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4552233A (en) * 1982-09-30 1985-11-12 Warren A. Sturm Rotary drill bit seal
US6431293B1 (en) * 1995-12-19 2002-08-13 Smith International, Inc. Dual-seal drill bit pressure communication system
US6679342B2 (en) 1995-12-19 2004-01-20 Smith International, Inc. Dual-seal drill bit pressure communication system
US6695079B2 (en) 1997-12-01 2004-02-24 Smith International, Inc. Dual-seal drill bit pressure communication system

Also Published As

Publication number Publication date
IT1166825B (en) 1987-05-06
GB2022170B (en) 1982-06-09
SE7904516L (en) 1979-12-01
MX147386A (en) 1982-11-26
BR7903396A (en) 1979-12-11
PL214440A1 (en) 1980-03-24
AU532730B2 (en) 1983-10-13
IT7922644A0 (en) 1979-05-14
PL121979B1 (en) 1982-06-30
IE48451B1 (en) 1985-01-23
FR2427460A1 (en) 1979-12-28
AU4760179A (en) 1979-12-06
NL7904233A (en) 1979-12-04
IE791353L (en) 1979-11-30
FR2427460B1 (en) 1983-12-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee