IT1244731B - PROCEDURE AND STAIN TO SHARP THE BUTTON POINT - Google Patents

PROCEDURE AND STAIN TO SHARP THE BUTTON POINT

Info

Publication number
IT1244731B
IT1244731B ITMI910364A ITMI910364A IT1244731B IT 1244731 B IT1244731 B IT 1244731B IT MI910364 A ITMI910364 A IT MI910364A IT MI910364 A ITMI910364 A IT MI910364A IT 1244731 B IT1244731 B IT 1244731B
Authority
IT
Italy
Prior art keywords
stain
sharp
procedure
button point
disclosed
Prior art date
Application number
ITMI910364A
Other languages
Italian (it)
Inventor
David Stanley Williams
Original Assignee
Boart Int Ltd
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 Boart Int Ltd filed Critical Boart Int Ltd
Publication of ITMI910364A0 publication Critical patent/ITMI910364A0/en
Publication of ITMI910364A1 publication Critical patent/ITMI910364A1/en
Application granted granted Critical
Publication of IT1244731B publication Critical patent/IT1244731B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
    • B24B3/33—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of drills for stone
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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

Abstract

Un bottone di metallo duro per punta per perforazione viene rigenerato conformandone la testa secondo una sagoma a scalpello. Si divulgano varie sagome a scalpello ed una macchina apposita. Vengono divulgati anche vari tipi appositi di mola circolare, nonché un procedimento e mezzi per ravvivare simultaneamente l'acciaio del corpo della punta.A carbide button for drill bit is regenerated by conforming its head according to a chisel shape. Various chisel shapes and a special machine are disclosed. Various special types of circular grinding wheel are also disclosed, as well as a method and means for simultaneously reviving the steel of the tip body.

ITMI910364A 1990-02-14 1991-02-13 PROCEDURE AND STAIN TO SHARP THE BUTTON POINT IT1244731B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA901118 1990-02-14
ZA906616 1990-08-21

Publications (3)

Publication Number Publication Date
ITMI910364A0 ITMI910364A0 (en) 1991-02-13
ITMI910364A1 ITMI910364A1 (en) 1992-08-13
IT1244731B true IT1244731B (en) 1994-08-08

Family

ID=67396391

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI910364A IT1244731B (en) 1990-02-14 1991-02-13 PROCEDURE AND STAIN TO SHARP THE BUTTON POINT

Country Status (12)

Country Link
KR (1) KR910015368A (en)
AU (1) AU7099791A (en)
CA (1) CA2036284A1 (en)
DE (1) DE4104551A1 (en)
FI (1) FI910706A (en)
FR (1) FR2658106A1 (en)
GB (1) GB2240940A (en)
IE (1) IE910433A1 (en)
IT (1) IT1244731B (en)
NO (1) NO910583L (en)
SE (1) SE9100404L (en)
ZW (1) ZW1091A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE463754B (en) * 1989-05-24 1991-01-21 Inovac Ab DEVICE FOR HANDHALLEN GRINDING MACHINE FOR GRIPPING CUTTER DRILLS

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3442342A (en) * 1967-07-06 1969-05-06 Hughes Tool Co Specially shaped inserts for compact rock bits,and rolling cutters and rock bits using such inserts
US3830020A (en) * 1969-10-22 1974-08-20 S Gomi Grinding diamond wheel, and method of making same
US4254840A (en) * 1978-10-05 1981-03-10 Reed Tool Company Drill bit insert
SE434356B (en) * 1981-11-24 1984-07-23 Finsliparna Ab Arrangement for grinding of drill bits
FI67500C (en) * 1983-09-12 1985-04-10 Airam Ab Oy ANORDNING FOER VAESSNING AV STIFTKRONA FOER BERGSBORR
GB2193456B (en) * 1986-07-25 1990-06-06 Boart Int Ltd Restoration of drill buttons
US4722405A (en) * 1986-10-01 1988-02-02 Dresser Industries, Inc. Wear compensating rock bit insert

Also Published As

Publication number Publication date
SE9100404L (en) 1991-08-15
SE9100404D0 (en) 1991-02-11
AU7099791A (en) 1991-08-15
KR910015368A (en) 1991-09-30
ITMI910364A0 (en) 1991-02-13
ZW1091A1 (en) 1991-05-08
FI910706A (en) 1991-08-15
GB2240940A (en) 1991-08-21
GB9102944D0 (en) 1991-03-27
ITMI910364A1 (en) 1992-08-13
CA2036284A1 (en) 1991-08-15
FR2658106A1 (en) 1991-08-16
FI910706A0 (en) 1991-02-13
DE4104551A1 (en) 1991-08-22
NO910583D0 (en) 1991-02-13
IE910433A1 (en) 1991-09-11
NO910583L (en) 1991-08-15

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Legal Events

Date Code Title Description
0001 Granted