IE40686B1 - Improvements in or relating to drill bits - Google Patents
Improvements in or relating to drill bitsInfo
- Publication number
- IE40686B1 IE40686B1 IE378/75A IE37875A IE40686B1 IE 40686 B1 IE40686 B1 IE 40686B1 IE 378/75 A IE378/75 A IE 378/75A IE 37875 A IE37875 A IE 37875A IE 40686 B1 IE40686 B1 IE 40686B1
- Authority
- IE
- Ireland
- Prior art keywords
- face
- inserts
- bit
- drill
- bits
- Prior art date
Links
- 238000005219 brazing Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 abstract 1
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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-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
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Drilling Tools (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
1466700 Drill bits PADLEY & VENABLES Ltd 21 Feb 1975 [21 March 1974] 12600/74 Heading B4C A rotary percussive drill bit has inserts 9 projecting axially from the end face thereof each insert having a flat leading face 10 lying parallel to the bit's longitudinal axis to produce zero rake, each face meeting a clearance face 11 at a cutting edge 12 and forming an angle between the two faces in the range 80-87 degrees. The bit is cut away as at 5 to produce a channel through which cleaning medium, entering through a central bore in the bit and exiting through radial channels 7, can remove debris. The inserts 9 are located in the lands between these recesses 5. The inserts may be of tungsten carbide and are chamfered at their inner and outer radial edges to prevent undue wear. As shown in Fig. 5A face 10 lies at an angle # to the radius passing through the bits axis and the intersection of face 10 with the periphery of the drill body so that the inner edge of the face leads the outer edge; however in modifications the inserts may be arranged so that the outer edge of face 10 leads the inner edge in the direction of rotation or the face may be arranged to lie along a radius as defined above. Also as shown a trailing face 13 is provided behind the clearing face 11. The bits may be inserted by brazing or by heating methods. The front face 10 of each insert may be recessed as at 28, 28b, Figs. 7 and 9. To facilitate cutting the channels 8 which take the inserts the face end of the drill may have a recess 30 drilled therein which is subsequently plugged by a member 31 prior to insertion of the inserts.
[GB1466700A]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1260074A GB1466700A (en) | 1974-03-21 | 1974-03-21 | Drill bits |
Publications (2)
Publication Number | Publication Date |
---|---|
IE40686L IE40686L (en) | 1975-09-21 |
IE40686B1 true IE40686B1 (en) | 1979-08-01 |
Family
ID=10007637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE378/75A IE40686B1 (en) | 1974-03-21 | 1975-02-24 | Improvements in or relating to drill bits |
Country Status (15)
Country | Link |
---|---|
JP (1) | JPS50129403A (en) |
AT (1) | ATA213575A (en) |
AU (1) | AU7923075A (en) |
BE (1) | BE826797A (en) |
CA (1) | CA1029366A (en) |
DE (1) | DE2512652A1 (en) |
ES (1) | ES435899A1 (en) |
FI (1) | FI750837A (en) |
FR (1) | FR2264961B3 (en) |
GB (1) | GB1466700A (en) |
IE (1) | IE40686B1 (en) |
NL (1) | NL7502813A (en) |
SE (1) | SE7502904L (en) |
ZA (1) | ZA751175B (en) |
ZM (1) | ZM2975A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT376765B (en) * | 1978-05-16 | 1984-12-27 | Guergen Karlheinz | INTERCHANGEABLE DRILL BIT FOR ONE STONE DRILL DRILL AND DRILL BIT APPLICABLE TO ALL STONES |
US5996714A (en) * | 1997-07-15 | 1999-12-07 | Kennametal Inc. | Rotatable cutting bit assembly with wedge-lock retention assembly |
DE19844820A1 (en) * | 1998-09-30 | 2000-04-13 | Holzmann Philipp Ag | Drill tip for a drill pipe |
CN110064739A (en) * | 2019-05-30 | 2019-07-30 | 广西玉柴机器股份有限公司 | A kind of sand mold drill bit |
-
1974
- 1974-03-21 GB GB1260074A patent/GB1466700A/en not_active Expired
-
1975
- 1975-02-24 IE IE378/75A patent/IE40686B1/en unknown
- 1975-02-25 ZA ZA00751175A patent/ZA751175B/en unknown
- 1975-03-04 ZM ZM29/75A patent/ZM2975A1/en unknown
- 1975-03-10 NL NL7502813A patent/NL7502813A/en unknown
- 1975-03-14 SE SE7502904A patent/SE7502904L/xx unknown
- 1975-03-18 FR FR7508344A patent/FR2264961B3/fr not_active Expired
- 1975-03-18 BE BE154428A patent/BE826797A/en unknown
- 1975-03-18 AU AU79230/75A patent/AU7923075A/en not_active Expired
- 1975-03-18 JP JP50033497A patent/JPS50129403A/ja active Pending
- 1975-03-20 AT AT752135A patent/ATA213575A/en not_active Application Discontinuation
- 1975-03-20 CA CA222,633A patent/CA1029366A/en not_active Expired
- 1975-03-20 FI FI750837A patent/FI750837A/fi not_active Application Discontinuation
- 1975-03-21 DE DE19752512652 patent/DE2512652A1/en active Pending
- 1975-03-21 ES ES435899A patent/ES435899A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2264961B3 (en) | 1977-11-25 |
IE40686L (en) | 1975-09-21 |
GB1466700A (en) | 1977-03-09 |
DE2512652A1 (en) | 1975-09-25 |
ZA751175B (en) | 1976-01-28 |
CA1029366A (en) | 1978-04-11 |
JPS50129403A (en) | 1975-10-13 |
ZM2975A1 (en) | 1976-01-21 |
SE7502904L (en) | 1975-09-22 |
AU7923075A (en) | 1976-09-23 |
FI750837A (en) | 1975-09-22 |
NL7502813A (en) | 1975-09-23 |
ES435899A1 (en) | 1976-12-16 |
ATA213575A (en) | 1977-06-15 |
FR2264961A1 (en) | 1975-10-17 |
BE826797A (en) | 1975-07-16 |
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