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FR2336541A1 - Rotary cutter boring head lubricated in closed circuit - has cutter driven pump and lubricant reservoir balancing pressures - Google Patents

Rotary cutter boring head lubricated in closed circuit - has cutter driven pump and lubricant reservoir balancing pressures

Info

Publication number
FR2336541A1
FR2336541A1 FR7539678A FR7539678A FR2336541A1 FR 2336541 A1 FR2336541 A1 FR 2336541A1 FR 7539678 A FR7539678 A FR 7539678A FR 7539678 A FR7539678 A FR 7539678A FR 2336541 A1 FR2336541 A1 FR 2336541A1
Authority
FR
France
Prior art keywords
cutter
lubricant
rotary
lubricated
closed circuit
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.)
Withdrawn
Application number
FR7539678A
Other languages
French (fr)
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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
Application filed by Creusot Loire SA filed Critical Creusot Loire SA
Priority to FR7539678A priority Critical patent/FR2336541A1/en
Publication of FR2336541A1 publication Critical patent/FR2336541A1/en
Withdrawn legal-status Critical Current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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6622—Details of supply and/or removal of the grease, e.g. purging grease
    • 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
    • E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
    • E21B10/246—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details with pumping means for feeding lubricant
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/1065—Grooves on a bearing surface for distributing or collecting the liquid
    • 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)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)

Abstract

Boring head with rotary cutters, for attachment to a train of boring bars or to the transmission of a high speed turbo drilling motor, has arms, each extended by a downwards inclined trunnion for a rotary inserted tooth cutter. The rotary cutter is supported by an arrangement of bearings guiding its rotation whilst stops prevent any axial motion. The bearing and thrust surfaces are protected against the abrasive environment by seals and are lubricated from a reservoir in a closed circuit. The lubricant is returned from the bearing and thrust surfaces to the reservoir, and a pump is set up between the rotating cutter and the trunnion. The pump is formed by spiral grooves in the bore of the cutter and pref. these are machined in a bush pressed into the bore. The pumped is thus driven by the motion of the cutter and the circulation of the lubricant is ensured. The lubricating system works so that breakdown of the lubricant is prevented, and lubrication generally is improved. The cutter bearings are cooled so that the tool can work at very high speeds and with long life.
FR7539678A 1975-12-24 1975-12-24 Rotary cutter boring head lubricated in closed circuit - has cutter driven pump and lubricant reservoir balancing pressures Withdrawn FR2336541A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7539678A FR2336541A1 (en) 1975-12-24 1975-12-24 Rotary cutter boring head lubricated in closed circuit - has cutter driven pump and lubricant reservoir balancing pressures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7539678A FR2336541A1 (en) 1975-12-24 1975-12-24 Rotary cutter boring head lubricated in closed circuit - has cutter driven pump and lubricant reservoir balancing pressures

Publications (1)

Publication Number Publication Date
FR2336541A1 true FR2336541A1 (en) 1977-07-22

Family

ID=9164144

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7539678A Withdrawn FR2336541A1 (en) 1975-12-24 1975-12-24 Rotary cutter boring head lubricated in closed circuit - has cutter driven pump and lubricant reservoir balancing pressures

Country Status (1)

Country Link
FR (1) FR2336541A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106700A2 (en) * 1982-10-19 1984-04-25 Drumco Drill bit assembly
WO1994024446A1 (en) * 1993-04-19 1994-10-27 Chang Chun Du Self-pumping roller bearings
CN102287138A (en) * 2011-06-24 2011-12-21 三原石油钻头厂 Dynamic pressure circulating lubrication roller bit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0106700A2 (en) * 1982-10-19 1984-04-25 Drumco Drill bit assembly
EP0106700A3 (en) * 1982-10-19 1986-02-05 Drumco Drill bit assembly
WO1994024446A1 (en) * 1993-04-19 1994-10-27 Chang Chun Du Self-pumping roller bearings
CN102287138A (en) * 2011-06-24 2011-12-21 三原石油钻头厂 Dynamic pressure circulating lubrication roller bit

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Legal Events

Date Code Title Description
ST Notification of lapse