CA2673112A1 - Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods - Google Patents
Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods Download PDFInfo
- Publication number
- CA2673112A1 CA2673112A1 CA002673112A CA2673112A CA2673112A1 CA 2673112 A1 CA2673112 A1 CA 2673112A1 CA 002673112 A CA002673112 A CA 002673112A CA 2673112 A CA2673112 A CA 2673112A CA 2673112 A1 CA2673112 A1 CA 2673112A1
- Authority
- CA
- Canada
- Prior art keywords
- connection portion
- drill bit
- shank
- abutting surfaces
- rotary drill
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract 12
- 238000005553 drilling Methods 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 6
- 229910045601 alloy Inorganic materials 0.000 claims 5
- 239000000956 alloy Substances 0.000 claims 5
- 239000011159 matrix material Substances 0.000 claims 4
- 229910000531 Co alloy Inorganic materials 0.000 claims 3
- 239000000463 material Substances 0.000 claims 3
- 238000005219 brazing Methods 0.000 claims 2
- 239000002131 composite material Substances 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 2
- 229910052759 nickel Inorganic materials 0.000 claims 2
- 239000002245 particle Substances 0.000 claims 2
- 239000010936 titanium Substances 0.000 claims 2
- 229910052719 titanium Inorganic materials 0.000 claims 2
- 229910052580 B4C Inorganic materials 0.000 claims 1
- 229910052582 BN Inorganic materials 0.000 claims 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims 1
- 229910000640 Fe alloy Inorganic materials 0.000 claims 1
- 229910000990 Ni alloy Inorganic materials 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims 1
- 229910003460 diamond Inorganic materials 0.000 claims 1
- 239000010432 diamond Substances 0.000 claims 1
- 229910052735 hafnium Inorganic materials 0.000 claims 1
- 150000001247 metal acetylides Chemical class 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 229910052758 niobium Inorganic materials 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 229910052715 tantalum Inorganic materials 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
Classifications
-
- 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
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
-
- 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
Abstract
Earth-boring rotary drill bits including a bit body (44) attached to a shank (48). In some embodiments, the bit body and the shank may have abutting surfaces (54, 56) concentric to an interface axis (A1) offset relative to a longitudinal axis (L42) of the drill bit. In additional embodiments, the bit body and the shank may have generally frustoconical abutting surfaces (98, 100). Methods for attaching a shank and a bit body of an earth-boring rotary drill bit include abutting a surface of a shank against a surface of a bit body, and causing the abutting surfaces to be concentric to an axis that is offset or shifted relative to a longitudinal axis of the drill bit.
Claims (20)
1. An earth-boring rotary drill bit comprising a bit body attached to a shank, the bit body and the shank having abutting surfaces concentric to an interface axis offset from a longitudinal and rotational axis of the drill bit.
2. The rotary drill bit of claim 1, wherein at least a portion of each of the abutting surfaces has a generally cylindrical shape.
3. The rotary drill bit of claim 1, wherein at least of portion of each of the abutting surfaces has a generally frustoconical shape.
4. The rotary drill bit of any one of claims 1 through 3, wherein the bit body comprises a connection portion attached to the shank, the connection portion of the bit body predominantly comprising a particle-matrix composite material, the particle-matrix composite material comprising a plurality of hard particles dispersed throughout a matrix material, the hard particles comprising a material selected from diamond, boron carbide, boron nitride, aluminum nitride, and carbides or borides of the group consisting of W, Ti, Mo, Nb, V, Hf, Zr, Si, Ta, and Cr, the matrix material selected from the group consisting of iron-based alloys, nickel-based alloys, cobalt-based alloys, titanium-based alloys;
aluminum-based alloys, iron and nickel-based alloys, iron and cobalt-based alloys, and nickel and cobalt-based alloys.
aluminum-based alloys, iron and nickel-based alloys, iron and cobalt-based alloys, and nickel and cobalt-based alloys.
5. The rotary drill bit of any one of claims 1 through 4, wherein a shape of one of the abutting surfaces defines at least one protrusion, and wherein a shape of another of the abutting surfaces defines at least one recess, the at least one protrusion disposed at least partially within the at least one recess.
6. The rotary drill bit of claim 5, wherein the at least one protrusion projects into the at least one recess in a generally lateral direction relative to a longitudinal axis of the drill bit.
7. The rotary drill bit of any one of claims 1 through 6, wherein the shank comprises a male connection portion and the bit body comprises a female connection portion configured to receive the male connection portion of the shank at least partially therein, an exterior surface of the male connection portion and an interior surface of the female connection portion defining the abutting surfaces.
8. The rotary drill bit of any one of claims 1 through 6, wherein the bit body comprises a male connection portion and the shank comprises a female connection portion configured to receive the male connection portion of the bit body at least partially therein, an exterior surface of the male connection portion and an interior surface of the female connection portion defining the abutting surfaces.
9. The rotary drill bit of any one of claims 1 through 8, wherein the abutting surfaces are free of threads.
10. The rotary drill bit of any one of claims 1 through 9, wherein the abutting surfaces are substantially smooth.
11. The rotary drill bit of any one of claims 1 through 10, further comprising at least one of a weld and a brazing material at an interface between the bit body and the shank.
12. The rotary drill bit of any one of claims 1 through 11, further comprising at least one cutting element secured to a face of the drill bit.
13. A method of attaching a shank and a bit body of an earth-boring rotary drill bit, the method comprising:
abutting at least one surface of a shank against at least one surface of a bit body of an earth-boring rotary drill bit; and causing the abutting surfaces to be concentric to an interface axis offset from a longitudinal and rotational axis of the drill bit.
abutting at least one surface of a shank against at least one surface of a bit body of an earth-boring rotary drill bit; and causing the abutting surfaces to be concentric to an interface axis offset from a longitudinal and rotational axis of the drill bit.
14. The method of claim 13, further comprising:
forming at least one protrusion in one of the abutting surfaces;
forming at least one recess in another of the abutting surfaces; and inserting the at least one protrusion at least partially into the at least one recess.
forming at least one protrusion in one of the abutting surfaces;
forming at least one recess in another of the abutting surfaces; and inserting the at least one protrusion at least partially into the at least one recess.
15. The method of claim 14, wherein forming at [east one protrusion in one of the abutting surfaces comprises forming at least one protrusion projecting in a generally lateral direction relative to the longitudinal axis of the drill bit in one of the abutting surfaces.
16. The method of any one of claims 13 through 15, further comprising:
forming a male connection portion on the bit body;
forming a female connection portion on the shank;
inserting the male connection portion of the bit body into the female connection portion of the shank;
causing an exterior surface of the male connection portion to abut against an interior surface of the female connection portion; and causing the abutting exterior surface of the male connection portion and interior surface of the female connection portion to be concentric to the interface axis.
forming a male connection portion on the bit body;
forming a female connection portion on the shank;
inserting the male connection portion of the bit body into the female connection portion of the shank;
causing an exterior surface of the male connection portion to abut against an interior surface of the female connection portion; and causing the abutting exterior surface of the male connection portion and interior surface of the female connection portion to be concentric to the interface axis.
17. The method of claim 16, further comprising forming at least a portion of each of the exterior surface of the male connection portion and the interior surface of the female connection portion to have a generally frustoconical shape.
18. The method of claim 16, further comprising forming at least a portion of each of the exterior surface of the male connection portion and the interior surface of the female connection portion to have a generally cylindrical shape.
19. The method of any one of claims 13 through 18, further comprising providing at least one of a weld and a brazing material at an interface between the bit body and the shank.
20. The method of any one of claims 13 through 19, further comprising securing at least one cutting element to a face of the rotary drill bit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/637,327 | 2006-12-12 | ||
| US11/637,327 US7775287B2 (en) | 2006-12-12 | 2006-12-12 | Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods |
| PCT/US2007/025102 WO2008073310A1 (en) | 2006-12-12 | 2007-12-07 | Methods of attaching a shank to a body of an earth boring drilling tool, and tools formed by such methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2673112A1 true CA2673112A1 (en) | 2008-06-19 |
| CA2673112C CA2673112C (en) | 2012-04-17 |
Family
ID=39284237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2673112A Expired - Fee Related CA2673112C (en) | 2006-12-12 | 2007-12-07 | Methods of attaching a shank to a body of an earth-boring drilling tool, and tools formed by such methods |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7775287B2 (en) |
| EP (1) | EP2102445A1 (en) |
| CN (1) | CN101583773A (en) |
| CA (1) | CA2673112C (en) |
| RU (1) | RU2009126623A (en) |
| WO (1) | WO2008073310A1 (en) |
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-
2006
- 2006-12-12 US US11/637,327 patent/US7775287B2/en active Active
-
2007
- 2007-12-07 CA CA2673112A patent/CA2673112C/en not_active Expired - Fee Related
- 2007-12-07 RU RU2009126623/03A patent/RU2009126623A/en not_active Application Discontinuation
- 2007-12-07 WO PCT/US2007/025102 patent/WO2008073310A1/en active Application Filing
- 2007-12-07 EP EP07862650A patent/EP2102445A1/en not_active Withdrawn
- 2007-12-07 CN CN200780050189.3A patent/CN101583773A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN101583773A (en) | 2009-11-18 |
| EP2102445A1 (en) | 2009-09-23 |
| WO2008073310B1 (en) | 2008-10-16 |
| RU2009126623A (en) | 2011-01-20 |
| CA2673112C (en) | 2012-04-17 |
| US7775287B2 (en) | 2010-08-17 |
| WO2008073310A1 (en) | 2008-06-19 |
| US20080135304A1 (en) | 2008-06-12 |
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| EEER | Examination request | ||
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