SE7707478L - DEVICE FOR RELEASING DROPPED HARDMET PINS IN DRILL CROWN - Google Patents

DEVICE FOR RELEASING DROPPED HARDMET PINS IN DRILL CROWN

Info

Publication number
SE7707478L
SE7707478L SE7707478A SE7707478A SE7707478L SE 7707478 L SE7707478 L SE 7707478L SE 7707478 A SE7707478 A SE 7707478A SE 7707478 A SE7707478 A SE 7707478A SE 7707478 L SE7707478 L SE 7707478L
Authority
SE
Sweden
Prior art keywords
hardmet
dropped
releasing
pins
milling head
Prior art date
Application number
SE7707478A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE406283B (en
Inventor
O Karlsson
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
Priority to SE7707478A priority Critical patent/SE406283B/en
Priority to DE19782826957 priority patent/DE2826957A1/en
Priority to AU37318/78A priority patent/AU3731878A/en
Priority to CA305,998A priority patent/CA1077921A/en
Priority to AT457678A priority patent/AT357500B/en
Priority to GB7827871A priority patent/GB2000461B/en
Priority to ZA00783634A priority patent/ZA783634B/en
Priority to IE1274/78A priority patent/IE47422B1/en
Priority to JP7707578A priority patent/JPS5417306A/en
Priority to BR787804089A priority patent/BR7804089A/en
Priority to FR7819084A priority patent/FR2395809A1/en
Publication of SE7707478L publication Critical patent/SE7707478L/en
Publication of SE406283B publication Critical patent/SE406283B/en

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)

Abstract

A device for exposing worn button pegs in drill bits comprising a milling head (1) with an axial recess (3) accommodating a centering pin (2) displaceable in the axial direction of the milling head. Said pin has an inner end (5) acted on by a compression spring means (4), and an outer end projecting from the milling head. The outer end (8) of the centering pin has a bowl-shaped recess (9) with a shape which is preferably hemispherical and corresponds to the shape of the button end of the carbide peg extending out of the drill bit. The button end of said peg is enclosed by the bowl-shaped recess when exposing the body portion of the peg. <IMAGE>
SE7707478A 1977-06-28 1977-06-28 DEVICE FOR EXPOSED DROUGHT CARRIED METAL PINS IN DRILL CROWN SE406283B (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
SE7707478A SE406283B (en) 1977-06-28 1977-06-28 DEVICE FOR EXPOSED DROUGHT CARRIED METAL PINS IN DRILL CROWN
DE19782826957 DE2826957A1 (en) 1977-06-28 1978-06-20 DEVICE FOR EXPOSING WEARED CARBIDE PINS IN DRILL BITS
AU37318/78A AU3731878A (en) 1977-06-28 1978-06-21 Device for exposing worn carbide tips in drill bits
CA305,998A CA1077921A (en) 1977-06-28 1978-06-22 Device for exposing worn carbide tips in drill bits
AT457678A AT357500B (en) 1977-06-28 1978-06-23 DEVICE FOR RENEWING WEARED HARD METAL PINS IN DRILL BITS
GB7827871A GB2000461B (en) 1977-06-28 1978-06-26 Device for exposing worn carbide tips in drill bits
ZA00783634A ZA783634B (en) 1977-06-28 1978-06-26 Device for exposing worn carbide tips in drill bits
IE1274/78A IE47422B1 (en) 1977-06-28 1978-06-26 Device for exposing worn carbide tips in drill bits
JP7707578A JPS5417306A (en) 1977-06-28 1978-06-27 Apparatus for exposing worn out carbide tip in drill bit
BR787804089A BR7804089A (en) 1977-06-28 1978-06-27 DEVICE FOR EXPOSING WASTE PADS IN WRENCHING DRILLS
FR7819084A FR2395809A1 (en) 1977-06-28 1978-06-27 DEVICE FOR RELEASING USED CARBIDE BUTTONS, ON A DRILLING TREPAN

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7707478A SE406283B (en) 1977-06-28 1977-06-28 DEVICE FOR EXPOSED DROUGHT CARRIED METAL PINS IN DRILL CROWN

Publications (2)

Publication Number Publication Date
SE7707478L true SE7707478L (en) 1978-12-29
SE406283B SE406283B (en) 1979-02-05

Family

ID=20331713

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7707478A SE406283B (en) 1977-06-28 1977-06-28 DEVICE FOR EXPOSED DROUGHT CARRIED METAL PINS IN DRILL CROWN

Country Status (11)

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

Families Citing this family (1)

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

Also Published As

Publication number Publication date
BR7804089A (en) 1979-01-16
AT357500B (en) 1980-07-10
SE406283B (en) 1979-02-05
IE781274L (en) 1978-12-28
GB2000461B (en) 1982-01-06
AU3731878A (en) 1980-01-03
ZA783634B (en) 1979-06-27
DE2826957A1 (en) 1979-01-18
GB2000461A (en) 1979-01-10
IE47422B1 (en) 1984-03-07
ATA457678A (en) 1979-12-15
FR2395809B3 (en) 1981-03-06
FR2395809A1 (en) 1979-01-26
JPS5417306A (en) 1979-02-08
CA1077921A (en) 1980-05-20

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