FR2417921A7 - Rotary rock drilling tool - has one piece solid body to transmit drive torque to brazed and sintered hard metal cutting tips - Google Patents
Rotary rock drilling tool - has one piece solid body to transmit drive torque to brazed and sintered hard metal cutting tipsInfo
- Publication number
- FR2417921A7 FR2417921A7 FR7903979A FR7903979A FR2417921A7 FR 2417921 A7 FR2417921 A7 FR 2417921A7 FR 7903979 A FR7903979 A FR 7903979A FR 7903979 A FR7903979 A FR 7903979A FR 2417921 A7 FR2417921 A7 FR 2417921A7
- Authority
- FR
- France
- Prior art keywords
- brazed
- hard metal
- solid body
- piece solid
- cutting tips
- 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.)
- Expired
Links
- 238000005553 drilling Methods 0.000 title abstract 3
- 239000002184 metal Substances 0.000 title abstract 2
- 239000011435 rock Substances 0.000 title abstract 2
- 239000007787 solid Substances 0.000 title abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/03—Couplings; joints between drilling rod or pipe and drill motor or surface drive, e.g. between drilling rod and hammer
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)
Abstract
The rotary tool is made for drilling rock and compises a one-piece solid body (1) forged and machined from a hexagonal or round bar. The cutting end (2) is shaped to provide clearance flutes, the drilling nose (3) having cutting tips (3') made from sintered hard metal which are brazed into position. The opposite end of the drill body is threaded (4) to fit into the drive coupling and its diameter is greater than at the drill end. The length of the body must ensure the threaded end does not enter the hole.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19787805011 DE7805011U1 (en) | 1978-02-20 | 1978-02-20 | MONOBLOC DRILLS |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2417921A7 true FR2417921A7 (en) | 1979-09-14 |
Family
ID=6688749
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7903979A Expired FR2417921A7 (en) | 1978-02-20 | 1979-02-16 | Rotary rock drilling tool - has one piece solid body to transmit drive torque to brazed and sintered hard metal cutting tips |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE7805011U1 (en) |
FR (1) | FR2417921A7 (en) |
IT (1) | IT7935629V0 (en) |
-
1978
- 1978-02-20 DE DE19787805011 patent/DE7805011U1/en not_active Expired
-
1979
- 1979-02-16 FR FR7903979A patent/FR2417921A7/en not_active Expired
- 1979-02-19 IT IT3562979U patent/IT7935629V0/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE7805011U1 (en) | 1978-07-20 |
IT7935629V0 (en) | 1979-02-19 |
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