GB2000461B - Device for exposing worn carbide tips in drill bits - Google Patents

Device for exposing worn carbide tips in drill bits

Info

Publication number
GB2000461B
GB2000461B GB7827871A GB7827871A GB2000461B GB 2000461 B GB2000461 B GB 2000461B GB 7827871 A GB7827871 A GB 7827871A GB 7827871 A GB7827871 A GB 7827871A GB 2000461 B GB2000461 B GB 2000461B
Authority
GB
United Kingdom
Prior art keywords
exposing
drill bits
carbide tips
worn
worn carbide
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
GB7827871A
Other languages
English (en)
Other versions
GB2000461A (en
Inventor
Osten Karlsson
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.)
Fagersta AB
Original Assignee
Fagersta 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
Application filed by Fagersta AB filed Critical Fagersta AB
Publication of GB2000461A publication Critical patent/GB2000461A/en
Application granted granted Critical
Publication of GB2000461B publication Critical patent/GB2000461B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/10—Bits for countersinking
    • 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
    • E21B10/56—Button-type inserts
    • 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
    • E21B12/00—Accessories for drilling tools

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)
  • Milling Processes (AREA)
GB7827871A 1977-06-28 1978-06-26 Device for exposing worn carbide tips in drill bits Expired GB2000461B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7707478A SE406283B (sv) 1977-06-28 1977-06-28 Anordning for frileggade av nerslitna hardmetallstift i borrkronor

Publications (2)

Publication Number Publication Date
GB2000461A GB2000461A (en) 1979-01-10
GB2000461B true GB2000461B (en) 1982-01-06

Family

ID=20331713

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7827871A Expired GB2000461B (en) 1977-06-28 1978-06-26 Device for exposing worn carbide tips in drill bits

Country Status (11)

Country Link
JP (1) JPS5417306A (de)
AT (1) AT357500B (de)
AU (1) AU3731878A (de)
BR (1) BR7804089A (de)
CA (1) CA1077921A (de)
DE (1) DE2826957A1 (de)
FR (1) FR2395809A1 (de)
GB (1) GB2000461B (de)
IE (1) IE47422B1 (de)
SE (1) SE406283B (de)
ZA (1) ZA783634B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2941041C2 (de) * 1979-10-10 1981-07-09 Daimler-Benz Ag, 7000 Stuttgart Schweißpunktfräser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
JPS5417306A (en) 1979-02-08
IE781274L (en) 1978-12-28
FR2395809B3 (de) 1981-03-06
ZA783634B (en) 1979-06-27
GB2000461A (en) 1979-01-10
BR7804089A (pt) 1979-01-16
DE2826957A1 (de) 1979-01-18
AU3731878A (en) 1980-01-03
FR2395809A1 (fr) 1979-01-26
SE7707478L (sv) 1978-12-29
IE47422B1 (en) 1984-03-07
SE406283B (sv) 1979-02-05
ATA457678A (de) 1979-12-15
AT357500B (de) 1980-07-10
CA1077921A (en) 1980-05-20

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Legal Events

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