CA2248688A1 - Rock drill bit and a rock drilling tool - Google Patents
Rock drill bit and a rock drilling toolInfo
- Publication number
- CA2248688A1 CA2248688A1 CA002248688A CA2248688A CA2248688A1 CA 2248688 A1 CA2248688 A1 CA 2248688A1 CA 002248688 A CA002248688 A CA 002248688A CA 2248688 A CA2248688 A CA 2248688A CA 2248688 A1 CA2248688 A1 CA 2248688A1
- Authority
- CA
- Canada
- Prior art keywords
- inserts
- rock
- drill bit
- surface portion
- drilling tool
- 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
- 238000005553 drilling Methods 0.000 title abstract 4
- 239000011435 rock Substances 0.000 title abstract 3
- 230000002093 peripheral effect Effects 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 abstract 1
- 238000011010 flushing procedure Methods 0.000 abstract 1
Landscapes
- Earth Drilling (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
A rock drill bit for percussive drilling comprising a head portion (1) with a front surface which has a number of inserts (7) provided in a peripheral ring, and a number of front inserts (9, 10) placed radially inside the peripheral inserts. At least a first surface portion (4) is provided on the front surface, which is recessed at a certain depth in relation to a surrounding second surface portion (5). One or more channels (12) for feed of flush medium to cool inserts and convey away drill cuttings between the drill bit and a bore wall terminates in the front surface.
The second surface portion (5) is a part of an endless land portion which delimits and wholly surrounds the recessed space in connection to the first surface portion (4) in order to always retain a cushion of flush medium in this space for the purpose of flushing in a versatile manner and cooling said from inserts (9, 10).
The present invention also relates to a rock-drilling tool for percussive drilling.
The second surface portion (5) is a part of an endless land portion which delimits and wholly surrounds the recessed space in connection to the first surface portion (4) in order to always retain a cushion of flush medium in this space for the purpose of flushing in a versatile manner and cooling said from inserts (9, 10).
The present invention also relates to a rock-drilling tool for percussive drilling.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9600983-2 | 1996-03-14 | ||
SE9600983A SE508490C2 (en) | 1996-03-14 | 1996-03-14 | Rock drill bit for striking drilling |
PCT/SE1997/000285 WO1997034072A1 (en) | 1996-03-14 | 1997-02-20 | Rock drill bit and a rock drilling tool |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2248688A1 true CA2248688A1 (en) | 1997-09-18 |
CA2248688C CA2248688C (en) | 2006-07-04 |
Family
ID=36648527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002248688A Expired - Lifetime CA2248688C (en) | 1996-03-14 | 1997-02-20 | Rock drill bit and a rock drilling tool |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2248688C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104594811A (en) * | 2013-10-31 | 2015-05-06 | 赵兵 | Rock water drilling machine row-hole drill bit |
-
1997
- 1997-02-20 CA CA002248688A patent/CA2248688C/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104594811A (en) * | 2013-10-31 | 2015-05-06 | 赵兵 | Rock water drilling machine row-hole drill bit |
Also Published As
Publication number | Publication date |
---|---|
CA2248688C (en) | 2006-07-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20170220 |