DE268171C - - Google Patents
Info
- Publication number
- DE268171C DE268171C DENDAT268171D DE268171DA DE268171C DE 268171 C DE268171 C DE 268171C DE NDAT268171 D DENDAT268171 D DE NDAT268171D DE 268171D A DE268171D A DE 268171DA DE 268171 C DE268171 C DE 268171C
- Authority
- DE
- Germany
- Prior art keywords
- head
- displaced
- slots
- cutting edge
- cross
- 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.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 238000005553 drilling Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
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)
- Drilling And Boring (AREA)
- Earth Drilling (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE268171C true DE268171C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=525165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT268171D Active DE268171C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE268171C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
0
- DE DENDAT268171D patent/DE268171C/de active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4092753A (en) | Combination drill and screwdriver | |
| TWI762672B (zh) | 鑽頭、穿孔單元以及穿孔方法 | |
| US20090119931A1 (en) | Tool element and marking system | |
| US4269550A (en) | Drill bushing for use in a metal tooling plate | |
| CN111283249B (zh) | 钻头、穿孔单元以及穿孔方法 | |
| DE268171C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
| TW202030036A (zh) | 旋轉切削刀具、旋轉切削單元以及旋轉切削方法 | |
| DE1477116B2 (de) | Vorrichtung an einer bohrmaschine zum tiefbohren | |
| DE65519C (de) | Holzschraube mit Bohrnuth | |
| CN219188747U (zh) | 高效双菱边破孔钻 | |
| TWM626243U (zh) | 捨棄式中心鑽鎖固結構 | |
| DE57134C (de) | Bohrkopf zur centralen oder schiefen Einspannung von Bohrern | |
| DE51419C (de) | Spundbohrer | |
| JPS63102815A (ja) | カウンタボ−リングヘツド | |
| CN112589164B (zh) | 一种引孔器及其用于盖板铆接孔加工的方法 | |
| DE27538C (de) | Neuerung an Drillbohrern | |
| US628530A (en) | Rock-drill and rock-drill bit, &c. | |
| CN216990025U (zh) | 一种孔端面锪沉孔刀具 | |
| CN219402467U (zh) | 一种稳定性强的合金台阶钻 | |
| GB191218443A (en) | Improvements in Percussive Rock-drilling Tools. | |
| DE345470C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
| CN217316001U (zh) | 棒材成型后钻孔工装 | |
| CN213729545U (zh) | 一种稳定性强的合金台阶钻 | |
| DE2833778A1 (de) | Fuehrungsleiste fuer bohrkronen, bohrkoepfe o.dgl. | |
| DE4338545A1 (de) | Bohrstift, insbesondere für Holz und Holzwerkstoffe |