GB1379151A - Rotary cutter for excavation especially for use with raise boring and tunnel boring machines - Google Patents

Rotary cutter for excavation especially for use with raise boring and tunnel boring machines

Info

Publication number
GB1379151A
GB1379151A GB1790472A GB1790472A GB1379151A GB 1379151 A GB1379151 A GB 1379151A GB 1790472 A GB1790472 A GB 1790472A GB 1790472 A GB1790472 A GB 1790472A GB 1379151 A GB1379151 A GB 1379151A
Authority
GB
United Kingdom
Prior art keywords
central plane
rib
bores
plane
inserts
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.)
Expired
Application number
GB1790472A
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.)
Kennametal Inc
Original Assignee
Kennametal Inc
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 Kennametal Inc filed Critical Kennametal Inc
Priority to GB1790472A priority Critical patent/GB1379151A/en
Publication of GB1379151A publication Critical patent/GB1379151A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-type inserts

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (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)
  • Earth Drilling (AREA)

Abstract

1379151 Roller cutters KENNAMETAL Inc 18 April 1972 17904/72 Heading E1F A rolling cutter for the cutting means of a tunnelling machine has a shaft 10 provided with spaced bearings 18 confined between end members 12 that are fixed to the shaft and a rotary cutting member 24 surrounding the shaft and disposed between the end members and supported on the bearings. This cutting member 24 is generally cylindrical arid has an outwardly projecting annular rib 26 in the axially central region of the member. The rib is provided with radial bores 28, 30 in which are hard metal inserts 32, e.g. tungsten carbide inserts, are secured. These bores are arranged in two sets, the axes of the bores of one set being located in a plane which is on one side of the axially central plane of the rib and parallel to said central plane whilst the axes of the bores of the other set are located in a plane which is on the other side of said central plane and is parallel to the central plane. Each of the inserts has a major portion thereof on 'the respective side of the central plane and a minor portion on the other side of the central plane. Preferably the rib is of V-shaped cross section, the inserts are rod like and with outer ends conforming to surfaces of the rib.
GB1790472A 1972-04-18 1972-04-18 Rotary cutter for excavation especially for use with raise boring and tunnel boring machines Expired GB1379151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1790472A GB1379151A (en) 1972-04-18 1972-04-18 Rotary cutter for excavation especially for use with raise boring and tunnel boring machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1790472A GB1379151A (en) 1972-04-18 1972-04-18 Rotary cutter for excavation especially for use with raise boring and tunnel boring machines

Publications (1)

Publication Number Publication Date
GB1379151A true GB1379151A (en) 1975-01-02

Family

ID=10103289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1790472A Expired GB1379151A (en) 1972-04-18 1972-04-18 Rotary cutter for excavation especially for use with raise boring and tunnel boring machines

Country Status (1)

Country Link
GB (1) GB1379151A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014101693U1 (en) 2013-04-12 2014-05-14 Bernhard Feistritzer Ring-shaped tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202014101693U1 (en) 2013-04-12 2014-05-14 Bernhard Feistritzer Ring-shaped tool
WO2014165887A2 (en) 2013-04-12 2014-10-16 Bernhard Feistritzer Annular tool

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Legal Events

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