EP0685629B1 - Rock drill bit - Google Patents
Rock drill bit Download PDFInfo
- Publication number
- EP0685629B1 EP0685629B1 EP95810187A EP95810187A EP0685629B1 EP 0685629 B1 EP0685629 B1 EP 0685629B1 EP 95810187 A EP95810187 A EP 95810187A EP 95810187 A EP95810187 A EP 95810187A EP 0685629 B1 EP0685629 B1 EP 0685629B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flutes
- drill
- drill bit
- diametrically opposed
- drill head
- 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 - Lifetime
Links
- 239000011435 rock Substances 0.000 title claims description 30
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims 4
- 208000028659 discharge Diseases 0.000 description 20
- 238000005520 cutting process Methods 0.000 description 13
- 238000005553 drilling Methods 0.000 description 6
- 238000000605 extraction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 206010038743 Restlessness Diseases 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
-
- 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
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
- E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
Definitions
- the invention relates to a rock drill with a clamping shank, at least one four parallel flutes with flutes and a drill head connected to the drill shaft and made entirely of hard metal with four discharge grooves arranged around the circumference, with the clear cross sections of the delivery and flute covers.
- Rock drills of the type in question are used to drill holes in Rock, concrete, masonry and the like. It is known that the rock drill is in the area wear the tip of the drill extremely quickly when drilling in hard ground. That is why rock drills are equipped with hard metal, under hard metal understood sintered or melted carbides, silicates, borides or their alloys become.
- Such a rock drill is known from US Pat. No. 2,673,716.
- This rock drill has a total of hard metal connected to the drill shank Drilling head, the four extraction grooves arranged evenly distributed around the circumference, which run in the longitudinal direction of the drill head.
- the drill head has a centrally arranged projection, which protrudes into a corresponding recess in the drill shank.
- the invention has for its object a rock drill with a hard metal to create existing drill head, which is characterized by high drilling performance, long service life, characterized by quiet running and good drilling cuttings.
- this is achieved in that the discharge grooves of the drill head have a different sized, clear cross section.
- the larger discharge ducts form the main discharge channels and the further discharge pipes, which are made smaller, the secondary discharge channels.
- the clear cross sections of different sizes can be formed of Abfuhmuten, which expediently have a different radial distance from the center of the drill head.
- the radial extension of the first two discharge grooves advantageously corresponds to that 0.05 to 0.25 times the outside diameter of the drill head.
- the radial extension of the two second discharge grooves preferably correspond to 0.1 to 0.35 times the outside diameter of the drill head. Due to the relatively deeply trained execution paths the extent of the discharge grooves in the circumferential direction of the drill head is small and that part the circumference of the drill head, which is supported on the borehole wall, kept large become.
- the Abfuhmuten are arranged running in the longitudinal direction of the drill head.
- the drill cuttings reach the flutes of the Drill shaft, the flutes of the drill shaft advantageously spiral are trained.
- the spiral flutes ensure further transport of the removed cuttings from the deepest part of the borehole to the Surface of the borehole.
- the rock drill shown in FIGS. 1 and 2 has a clamping shank 1, a drill shaft 2 with four flutes 4, 5, 6, 7 arranged parallel to one another, which are formed in a spiral and one connected to the drill shaft 2, in total made of hard metal drill head 3 with four evenly distributed around the circumference arranged Abfuhmuten 8, 9, 10, 11.
- the radial distances R1 from the center Z of the Boring head 3 of two first, diametrically opposite extraction grooves 8, 10 are smaller than the radial distances R2 from two second diametrically opposite one another Execution 9, 11.
- At least one cutting edge 12 is arranged, which at least partially along the Front side extends over the entire diameter of the drill head 3. This cutting edge 12 is used to remove drill cuttings, not shown.
- the drill head 13 shown in Fig. 3 has four Abfuhmuten 14, 15, 16, 17, the regular are distributed around the circumference.
- the clear cross sections of two first, each other diametrically opposite discharge grooves 14, 16 are larger than the clear ones Cross-sections of two second, diametrically opposite, exhaust grooves 15, 17.
- the extensions B1, B3 of the discharge grooves 14, 16 in the circumferential direction of the drill head 13 are larger than the extensions B2, B4 of the delivery rods 15, 17.
- the discharge grooves 14, 16 are opposite the discharge grooves 15, 17 at an angle W of 90 ° arranged.
- the drill head 23 shown in FIG. 4 has four discharge grooves arranged distributed around the circumference 24, 25, 26, 27, which run in the longitudinal direction of the drill head 23.
- the discharge grooves 24, 25, 26, 27 have a clear cross-section of different sizes. Therefore the Abfuhmuten 24, 25, 26, 27 have a different radial distance R3, R4, R5, R6 from the center Z of the drill head 23.
- the drill head 3 shown in FIGS. 1 and 2 has an outer diameter D which is essentially of the same size as the outside diameter of the drill shank Second
- the drill head 3 is connected to the drill shaft 2, for example, by a solder connection.
- the better centering during the soldering process and the formation of a Larger connecting surface serve centering means, not shown, in the form of projections on the drill head 3, which are formed in appropriately designed depressions, not shown of the drill shaft 2 protrude. These projections or depressions are special arranged in the central area of the rock drill. Such advances can be conical, for example.
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Steroid Compounds (AREA)
Abstract
Description
Die Erfindung betrifft einen Gesteinsbohrer mit einem Einspannschaft, einem wenigstens vier parallel nebeneinander angeordnete Spannuten aufweisenden Bohrerschaft und einem mit dem Bohrschaft verbundenen, insgesamt aus Hartmetall bestehenden Bohrkopf mit vier am Umfang verteilt angeordneten Abfuhmuten, wobei sich die lichten Querschnitte der Abfuhmuten und Spannuten decken.The invention relates to a rock drill with a clamping shank, at least one four parallel flutes with flutes and a drill head connected to the drill shaft and made entirely of hard metal with four discharge grooves arranged around the circumference, with the clear cross sections of the delivery and flute covers.
Gesteinsbohrer der in Rede stehenden Art dienen der Herstellung von Bohrungen in Gestein, Beton, Mauerwerk und dgl. Es ist bekannt, dass sich die Gesteinsbohrer im Bereich der Bohrerspitze beim Bohren in hartem Untergrund ausserordentlich schnell abnutzen. Deshalb sind Gesteinsbohrer mit Hartmetall bestückt, wobei unter Hartmetall gesinterte oder geschmolzene Karbide, Silikate, Boride oder deren Legierungen verstanden werden.Rock drills of the type in question are used to drill holes in Rock, concrete, masonry and the like. It is known that the rock drill is in the area wear the tip of the drill extremely quickly when drilling in hard ground. That is why rock drills are equipped with hard metal, under hard metal understood sintered or melted carbides, silicates, borides or their alloys become.
Ein derartiger Gesteinsbohrer ist aus der US-PS 2,673,716 bekannt. Dieser Gesteinsbohrer besitzt einen insgesamt aus Hartmetall bestehenden, mit dem Bohrerschaft verbundenen Bohrkopf, der vier gleichmässig am Umfang verteilt angeordnete Abfuhmuten, die in Längsrichtung des Bohrkopfes verlaufen, aufweist. Für die Verbindung des Bohrkopfes mit dem Bohrerschaft besitzt der Bohrkopf einen zentral angeordneten Vorsprung, der in eine entsprechende Vertiefung des Bohrerschaftes ragt.Such a rock drill is known from US Pat. No. 2,673,716. This rock drill has a total of hard metal connected to the drill shank Drilling head, the four extraction grooves arranged evenly distributed around the circumference, which run in the longitudinal direction of the drill head. For the connection of the drill head with the drill shank, the drill head has a centrally arranged projection, which protrudes into a corresponding recess in the drill shank.
Die stetige Abfuhr des Bohrkleins dieses bekannten Gesteinsbohrers während eines Bearbeitungsvorganges erfolgt über die in Längsrichtung des Bohrkopfes verlaufenden Abfuhmuten zu den Spannuten des Bohrerschaftes. Die Spannuten des Bohrerschaftes sind spiralförmig ausgebildet und decken sich jeweils mit den Abfuhmuten des Bohrkopfes. Da die lichten Querschnitte aller Abfuhmuten des Bohrkopfes gleich gross sind, wird über jede Abfuhmut gleich viel Bohrklein während des Bohrvorganges abgeführt. Bei der Abtragung von sehr weichem oder sprödem Material kann es zu einer Verklemmung von grosskömigem Bohrklein in den Abfuhmuten kommen. Weiteres Bohrklein, das sich in den Abfuhmuten ansammelt, drückt radial nach aussen gegen die Bohrlochwandung, so dass einerseits ein erhöhtes Drehmoment auf den Gesteinsbohrer aufgebracht werden muss, um den Gesteinsbohrer verdrehen zu können und andererseits eine Beschädigung der Bohrlochwandung, insbesondere hervorgerufen durch unruhigen Lauf des Gesteinsbohrers, entsteht.The constant removal of the cuttings of this known rock drill during a machining process takes place over the running in the longitudinal direction of the drill head Procedure for the flutes of the drill shank. The flutes of the drill shank are spiral-shaped and each coincide with the extraction head of the drill head. Since the clear cross-sections of all the discharge heads of the drill head are the same size the same amount of cuttings removed during each drilling process. In the Removal of very soft or brittle material can result in jamming large-grained cuttings come in the delivery lines. Another cuttings that are in accumulates the exhaust pipes, presses radially outwards against the borehole wall, see above that on the one hand an increased torque is applied to the rock drill must be able to twist the rock drill and on the other hand damage the borehole wall, in particular caused by restless running of the rock drill.
Der Erfindung liegt die Aufgabe zugrunde, einen Gesteinsbohrer mit einem aus Hartmetall bestehenden Bohrkopf zu schaffen, der sich durch hohe Bohrleistung, hohe Standzeiten, ruhigen Lauf und eine gute Bohrkleinabfuhr auszeichnet.The invention has for its object a rock drill with a hard metal to create existing drill head, which is characterized by high drilling performance, long service life, characterized by quiet running and good drilling cuttings.
Erfindungsgemäss wird dies dadurch erreicht, dass die Abfuhmuten des Bohrkopfes einen unterschiedlich grossen, lichten Querschnitt aufweisen.According to the invention, this is achieved in that the discharge grooves of the drill head have a different sized, clear cross section.
Aufgrund der unterschiedlich grossen Abfuhmuten kann Bohrklein unterschiedlicher Grösse gut abgeführt werden. Die grösseren Abfuhmuten bilden dabei die Hauptabfuhrkanäle und die weiteren Abfuhmuten, welche kleiner ausgebildet sind, die Nebenabfuhrkanäle.Due to the different sizes of drill bits, cuttings can be different Size well dissipated. The larger discharge ducts form the main discharge channels and the further discharge pipes, which are made smaller, the secondary discharge channels.
Um einen möglichst ruhigen Lauf des Gesteinsbohrers während des Bearbeitungsvorganges erreichen zu können, sind vorzugsweise die lichten Querschnitte von zwei ersten, einander diametral gegenüberliegenden Abfuhmuten grösser, als die lichten Querschnitte von zwei zweiten, einander diametral gegenüberliegenden Abfuhmuten.To ensure that the rock drill runs as smoothly as possible during the machining process To be able to achieve the clear cross-sections of two first, diametrically opposite discharge grooves larger than the clear cross sections of two second, diametrically opposed, delivery lines.
Die unterschiedlich grossen lichten Querschnitte der Abfuhmuten können gebildet sein von Abfuhmuten, die zweckmässigerweise einen unterschiedlich grossen, radialen Abstand vom Zentrum des Bohrkopfes aufweisen.The clear cross sections of different sizes can be formed of Abfuhmuten, which expediently have a different radial distance from the center of the drill head.
Gute Rundlaufeigenschaften des Gesteinsbohrers werden dadurch erreicht, dass zweckmässigerweise die zwei ersten, einander diametral gegenüberliegenden Abfuhmuten eine kleinere radiale Ersteckung aufweisen als die zwei zweiten, einander diametral gegenüberliegenden Abfuhmuten.Good concentricity properties of the rock drill are achieved in that expediently the two first discharge diametrically opposite one another have a smaller radial extension than the second two, diametrically opposite one another opposite shipping lines.
Die radiale Erstreckung der zwei ersten Abfuhmuten entspricht vorteilhafterweise dem 0,05- bis 0,25-fachen Aussendurchmesser des Bohrkopfes. Die radiale Erstreckung der zwei zweiten Abfuhmuten entspricht dabei vorzugsweise dem 0,1- bis 0,35-fachen Aussendurchmesser des Bohrkopfes. Durch die relativ tief ausgebildeten Abfuhmuten kann die Erstreckung der Abfuhmuten in Umfangsrichtung des Bohrkopfes klein und jener Teil des Umfanges des Bohrkopfes, der sich an der Bohrlochwandung abstützt, gross gehalten werden. The radial extension of the first two discharge grooves advantageously corresponds to that 0.05 to 0.25 times the outside diameter of the drill head. The radial extension of the two second discharge grooves preferably correspond to 0.1 to 0.35 times the outside diameter of the drill head. Due to the relatively deeply trained execution paths the extent of the discharge grooves in the circumferential direction of the drill head is small and that part the circumference of the drill head, which is supported on the borehole wall, kept large become.
Unterschiedlich grosse, lichte Querschnitte der Abfuhmuten können auch dadurch erreicht werden, dass vorteilhafterweise die zwei ersten, einander diametral gegenüberliegenden Abfuhmuten eine grössere, in Umfangsrichtung eines Bohrkopfes verlaufende Erstreckung aufweisen, als die zwei zweiten, einander diametral gegenüberliegenden Abfuhmuten.Different sized, clear cross sections of the exhaust pipes can also be achieved be that the first two, diametrically opposite each other Execute a larger one running in the circumferential direction of a drill head Extend as the two second diametrically opposite Removal flutes.
Gute Rundlaufeigenschaften werden dadurch erreicht, dass zweckmässigerweise die zwei ersten, einander diametral gegenüberliegend angeordneten Abfuhmuten gegenüber den zwei zweiten, einander diametral gegenüberliegenden Abfuhmuten unter einem Winkel von 60° bis 90° angeordnet sind. Bei einer Ausrichtung beider einander diametral gegenüberliegender Abfuhmuten unter einem Winkel von ca. 60° können zwei besonders gross ausgebildete, einander diametral gegenüberliegende Abfuhmuten geschaffen werden, die der guten Abfuhr des Bohrkleins dienen und die einen hohen Bohrfortschritt gewährleisten.Good concentricity properties are achieved by the fact that the two first discharge grooves arranged diametrically opposite one another under the two second, diametrically opposed delivery lines are arranged at an angle of 60 ° to 90 °. When both are aligned diametrically opposite discharge grooves at an angle of approx. 60 ° can do two especially large trained, diametrically opposed Abmuhmuten created that serve the good removal of the cuttings and the high ones Ensure drilling progress.
Um eine schnelle Abfuhr des Bohrkleins aus dem Bereich des Bohrkopfes gewährleisten zu können, sind die Abfuhmuten in Längsrichtung des Bohrkopfes verlaufend angeordnet. Von den Abfuhmuten des Bohrkopfes gelangt das Bohrklein zu den Spannuten des Bohrerschaftes, wobei die Spannuten des Bohrerschaftes vorteilhafterweise spiralförmig ausgebildet sind. Die spiralförmig ausgebildeten Spannuten gewährleisten einen Weitertransport des abgetragenen Bohrkleins aus dem Bereich des Bohrlochtiefsten an die Oberfläche des Bohrloches.To ensure quick removal of the cuttings from the area of the drill head To be able, the Abfuhmuten are arranged running in the longitudinal direction of the drill head. The drill cuttings reach the flutes of the Drill shaft, the flutes of the drill shaft advantageously spiral are trained. The spiral flutes ensure further transport of the removed cuttings from the deepest part of the borehole to the Surface of the borehole.
Die Erfindung wird anhand von Zeichnungen, die mehrere Ausführungsbeispiele wiedergeben, näher erläutert. Es zeigen:
- Fig. 1
- einen erfindungsgemässen Gesteinsbohrer mit Einspannschaft, Bohrerschaft und Bohrkopf;
- Fig. 2
- einen Querschnitt durch den Bohrkopf des Gesteinsbohrers gemäss Fig. 1, in vergrösserter Darstellung;
- Fig. 3, 4
- Querschnitte durch Bohrköpfe weiterer erfindungsgemässer Gesteinsbohrer, in vergrösserter Darstellung.
- Fig. 1
- a rock drill according to the invention with a clamping shank, drill shank and drill head;
- Fig. 2
- a cross section through the drill head of the rock drill according to Figure 1, in an enlarged view.
- 3, 4
- Cross-sections through drill heads of further rock drills according to the invention, in an enlarged view.
Der in den Fig. 1 und 2 dargestellte Gesteinsbohrer besitzt einen Einspannschaft 1,
einen Bohrschaft 2 mit vier parallel nebeneinander angeordneten Spannuten 4, 5, 6, 7,
die spiralförmig ausgebildet sind und einen mit dem Bohrschaft 2 verbundenen, insgesamt
aus Hartmetall bestehenden Bohrkopf 3 mit vier gleichmässig am Umfang verteilt
angeordneten Abfuhmuten 8, 9, 10, 11. Die radialen Abstände R1 vom Zentrum Z des
Bohrkopfes 3 von zwei ersten, einander diametral gegenüberliegenden Abfuhmuten 8,
10 sind kleiner als die radialen Abstände R2 von zwei zweiten, einander diametral gegenüberliegenden
Abfuhmuten 9, 11.The rock drill shown in FIGS. 1 and 2 has a clamping shank 1,
a
Im freien Endbereich des Bohrkopfes 3 des in Fig. 1 dargestellten Gesteinsbohrers ist
wenigstens eine Schneidkante 12 angeordnet, die sich wenigstens teilweise entlang der
Stimseite über den gesamten Durchmesser des Bohrkopfes 3 erstreckt. Diese Schneidkante
12 dient dem Abtragen von nicht dargestelltem Bohrklein.In the free end area of the
Der in Fig. 3 dargestellte Bohrkopf 13 hat vier Abfuhmuten 14, 15, 16, 17, die regelmässig
am Umfang verteilt angeordnet sind. Die lichten Querschnitte von zwei ersten, einander
diametral gegenüberliegenden Abfuhmuten 14, 16 sind grösser als die lichten
Querschnitte von zwei zweiten, einander diametral gegenüberliegenden Abfuhmuten 15,
17. Die Erstreckungen B1, B3 der Abfuhmuten 14, 16 in Umfangsrichtung des Bohrkopfes
13 sind grösser, als die Erstreckungen B2, B4 der Abfuhmuten 15, 17. Die Abfuhrnuten
14, 16 sind gegenüber den Abfuhmuten 15, 17 unter einem Winkel W von 90°
angeordnet.The
Der in Fig. 4 dargestellte Bohrkopf 23 besitzt vier am Umfang verteilt angeordnete Abfuhmuten
24, 25, 26, 27, die in Längsrichtung des Bohrkopfes 23 verlaufen. Die Abfuhrnuten
24, 25, 26, 27 weisen einen unterschiedlich grossen, lichten Querschnitt auf. Daher
besitzen die Abfuhmuten 24, 25, 26, 27 einen unterschiedlich grossen radialen Abstand
R3, R4, R5, R6 vom Zentrum Z des Bohrkopfes 23.The
Der in den Fig. 1 und 2 dargestellte Bohrkopf 3 besitzt einen Aussendurchmesser D, der
im wesentlichen gleich gross ausgebildet ist als der Aussendurchmesser des Bohrerschaftes
2.The
Der Bohrkopf 3 ist beispielsweise durch eine Lötverbindung mit dem Bohrerschaft 2 verbunden.
Der besseren Zentrierung während des Lötvorganges und der Bildung einer
grösseren Verbindungsfläche dienen nicht dargestellte Zentriermittel in Form von Vorsprüngen
am Bohrkopf 3, die in entsprechend ausgebildete, nicht dargestellte Vertiefungen
des Bohrerschaftes 2 ragen. Diese Vorsprünge bzw. Vertiefungen sind insbesondere
im zentralen Bereich des Gesteinsbohrers angeordnet. Solche Vorsprünge
können beispielsweise kegelförmig ausgebildet sein.The
Claims (9)
- Rock drill bit with a clamping shank (1), a drill shank (2) having at least four chip flutes (4, 5, 6, 7) arranged parallel and adjacent to each other, and joined to the drill shank (2) a drill head (3, 13, 23) made overall of hard metal with four removal flutes (8, 9, 10, 11, 14, 15, 16, 17, 24, 25, 26, 27) arranged distributed round the periphery and running in the longitudinal direction of the drill head (3, 13, 23), whereby the clear cross-sections of the removal flutes (8, 9, 10, 11, 14, 15, 16, 17, 24, 25, 26, 27) and chip flutes (4, 5, 6, 7) match each other, characterised in that the removal flutes (8, 9, 10, 11, 14, 15, 16, 17, 24, 25, 26, 27) have different clear cross-sections.
- Rock drill bit according to Claim 1, characterised in that the clear cross-sections of two first mutually diametrically opposed removal flutes (8, 10, 14, 16) are greater than the clear cross-sections of two second mutually diametrically opposed removal flutes (9, 11, 15, 17).
- Rock drill bit according to Claim 1 or 2, characterised in that the removal flutes (8, 9, 10, 11, 24, 25, 26, 27) have different radial separations (R1, R2, R3, R4, R5, R6) from the centre (Z) of the drill head (3, 23).
- Rock drill bit according to Claim 3, characterised in that the two first mutually diametrically opposed removal flutes (8, 10) have a smaller radial separation (R1) than the two second mutually diametrically opposed removal flutes (9, 11).
- Rock drill bit according to Claim 4, characterised in that the radial separation (R1) of the two first removal flutes (8, 10) corresponds to between 0.05 and 0.25 times the external diameter (D) of the drill head (3).
- Rock drill bit according to Claim 3, characterised in that the radial separation (R2) of the two second removal flutes (9, 11) corresponds to between 0.1 and 0.35 times the external diameter (D) of the drill head (3).
- Rock drill bit according to one of the claims 2 to 6, characterised in that the two first mutually diametrically opposed removal flutes (8, 10, 14, 16) have a greater extent (B1, B3) in the circumferential direction of the drill head (3, 13) than the two second mutually diametrically opposed removal flutes (9, 11, 15, 17).
- Rock drill bit according to one of the claims 2 to 7, characterised in that the two first mutually diametrically opposed removal flutes (14, 16) are arranged at an angle (W) of 60° to 90° relative to the two second mutually diametrically opposed removal flutes (15, 17).
- Rock drill bit according to one of the claims 1 to 8, characterised in that the chip flutes (4, 5, 6, 7) have a helical design.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4419641A DE4419641A1 (en) | 1994-06-04 | 1994-06-04 | Rock drill |
| DE4419641 | 1994-06-04 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0685629A2 EP0685629A2 (en) | 1995-12-06 |
| EP0685629A3 EP0685629A3 (en) | 1996-12-18 |
| EP0685629B1 true EP0685629B1 (en) | 2002-08-14 |
Family
ID=6519846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95810187A Expired - Lifetime EP0685629B1 (en) | 1994-06-04 | 1995-03-20 | Rock drill bit |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US5553682A (en) |
| EP (1) | EP0685629B1 (en) |
| JP (1) | JPH07329049A (en) |
| KR (1) | KR960000438A (en) |
| CN (1) | CN1116683A (en) |
| AT (1) | ATE222321T1 (en) |
| AU (1) | AU690659B2 (en) |
| CA (1) | CA2150164C (en) |
| CZ (1) | CZ82895A3 (en) |
| DE (2) | DE4419641A1 (en) |
| DK (1) | DK0685629T3 (en) |
| ES (1) | ES2181759T3 (en) |
| FI (1) | FI108622B (en) |
| HU (1) | HU216598B (en) |
| PL (1) | PL308889A1 (en) |
| TW (1) | TW284718B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2116321A1 (en) | 2008-05-09 | 2009-11-11 | Irwin Industrial Tools GmbH | Boring tool, in particular twist drill |
| DE102008022945A1 (en) | 2008-05-09 | 2009-12-03 | Irwin Industrial Tools Gmbh | Drilling tool, in particular twist drills |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19707115A1 (en) * | 1997-02-22 | 1998-08-27 | Hilti Ag | Drilling and / or chisel tools |
| DE10009732A1 (en) * | 2000-03-02 | 2001-09-06 | Hawera Probst Gmbh | Rock drill has drill head, spiral conveyor with main and subsidiary webs, conveyor edges, main and subsidiary cutter-blades. |
| DE10047332A1 (en) * | 2000-09-25 | 2002-04-11 | Hilti Ag | Tool with helix |
| KR20010051858A (en) * | 2000-11-22 | 2001-06-25 | 윤광근 | breaker chisel |
| DE20108179U1 (en) | 2001-05-15 | 2001-07-26 | Plica Werkzeugfabrik Ag, Mollis | drill |
| CA2494062C (en) | 2002-08-08 | 2016-06-14 | Liam Patrick Ellis | A drill bit and method for producing a drill bit |
| GB2393681A (en) * | 2002-10-03 | 2004-04-07 | Black & Decker Inc | Masonry drilling tool |
| US8146256B2 (en) | 2003-10-31 | 2012-04-03 | Stanley Black & Decker, Inc. | Metal demolition shears with indexable, integrated wear plate/piercing tip |
| DE102004028099A1 (en) * | 2004-06-09 | 2005-12-29 | Hilti Ag | drill |
| GB2433905B (en) * | 2006-01-06 | 2009-07-15 | Kuldip Singh Kanth | Apparatus for use in the installation of a shower enclosure |
| DE102006000208A1 (en) | 2006-04-28 | 2007-10-31 | Hilti Ag | Rotary hammer drill with four-turn drill bit shank |
| DE102007062539B4 (en) * | 2006-12-21 | 2012-08-23 | Stefan Rothenaicher | drilling |
| DE202006019501U1 (en) * | 2006-12-21 | 2008-04-30 | Rothenaicher, Stefan | drilling |
| DE102006035306A1 (en) | 2006-12-22 | 2008-06-26 | Hilti Ag | Rotary impact drill with hard material insert |
| DE102007000486A1 (en) | 2007-09-05 | 2009-03-12 | Hilti Aktiengesellschaft | Strengthening brittle hard material surfaces, e.g. in inserts for tools for processing brittle workpieces, involves laser shock hammering by applying laser impulses to generate plasma bubble |
| US20090148250A1 (en) * | 2007-12-05 | 2009-06-11 | Wayne Chappell | Drill Bit |
| US7861807B2 (en) * | 2008-12-03 | 2011-01-04 | Black & Decker Inc. | Drill bit including one piece cutting head |
| CN103433535B (en) * | 2013-08-26 | 2015-11-04 | 深圳市金洲精工科技股份有限公司 | A kind of microbit |
| DE102014203327A1 (en) * | 2014-02-25 | 2015-08-27 | Robert Bosch Gmbh | drilling |
| CN104493263A (en) * | 2014-09-28 | 2015-04-08 | 上海奥林汽车安全系统有限公司 | Double-edge band twist drill with high machining precision |
| CN105108211B (en) * | 2015-09-15 | 2018-06-26 | 深圳市金洲精工科技股份有限公司 | Side set cutting drill head |
| DE102017117664A1 (en) * | 2017-08-03 | 2019-02-07 | Drebo Werkzeugfabrik Gmbh | drill |
| US11679442B2 (en) | 2018-06-22 | 2023-06-20 | Maestro Logistics, Llc | Drill bit and method for making a drill bit |
| US11948700B2 (en) | 2020-11-11 | 2024-04-02 | Grant Charters | In-situ method of drilling to collect dry samples from a nuclear reactor core interior for analysis |
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| US750537A (en) * | 1904-01-26 | Drilling-tool | ||
| US580398A (en) * | 1897-04-13 | Peter j | ||
| US599537A (en) * | 1898-02-22 | Martin steudner | ||
| GB512830A (en) * | 1938-03-17 | 1939-09-27 | John Joseph Rawlings | Improvements in percussion drills |
| US2217202A (en) * | 1939-10-19 | 1940-10-08 | Rawlplug Company Inc | Percussion drill |
| US2370706A (en) * | 1943-11-29 | 1945-03-06 | Rudolf W Andreasson | Drill |
| US2673716A (en) * | 1950-09-02 | 1954-03-30 | Clyde E Avery | Bit |
| US3089354A (en) * | 1959-10-30 | 1963-05-14 | Spiralbohrer Und Werkzeugfabri | Method for the production of cutting tools |
| CH626557A5 (en) * | 1978-09-28 | 1981-11-30 | Guex Philippe & Fils Sa | |
| US4898503A (en) * | 1988-07-05 | 1990-02-06 | Lockheed Corporation | Twist drill |
| US5297456A (en) * | 1990-02-07 | 1994-03-29 | Gn Tool Co., Ltd. | Cutting tool with twisted edge and manufacturing method thereof |
| DE4011441A1 (en) * | 1990-04-09 | 1991-10-10 | Hilti Ag | ROCK DRILL |
| US5265688A (en) * | 1990-04-09 | 1993-11-30 | Hilti Aktiengesellschaft | Rock drill |
| SE507842C2 (en) * | 1992-09-24 | 1998-07-20 | Sandvik Ab | Drill |
-
1994
- 1994-06-04 DE DE4419641A patent/DE4419641A1/en not_active Withdrawn
-
1995
- 1995-03-20 EP EP95810187A patent/EP0685629B1/en not_active Expired - Lifetime
- 1995-03-20 DK DK95810187T patent/DK0685629T3/en active
- 1995-03-20 ES ES95810187T patent/ES2181759T3/en not_active Expired - Lifetime
- 1995-03-20 DE DE59510316T patent/DE59510316D1/en not_active Expired - Lifetime
- 1995-03-20 AT AT95810187T patent/ATE222321T1/en not_active IP Right Cessation
- 1995-03-31 CZ CZ95828A patent/CZ82895A3/en unknown
- 1995-04-26 KR KR1019950009888A patent/KR960000438A/en active IP Right Grant
- 1995-05-09 TW TW084104604A patent/TW284718B/zh active
- 1995-05-25 CA CA002150164A patent/CA2150164C/en not_active Expired - Fee Related
- 1995-05-26 FI FI952565A patent/FI108622B/en active
- 1995-05-30 AU AU20395/95A patent/AU690659B2/en not_active Ceased
- 1995-06-02 CN CN95107179A patent/CN1116683A/en active Pending
- 1995-06-02 HU HU9501624A patent/HU216598B/en not_active IP Right Cessation
- 1995-06-02 PL PL95308889A patent/PL308889A1/en unknown
- 1995-06-05 JP JP7138039A patent/JPH07329049A/en active Pending
- 1995-06-07 US US08/474,846 patent/US5553682A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2116321A1 (en) | 2008-05-09 | 2009-11-11 | Irwin Industrial Tools GmbH | Boring tool, in particular twist drill |
| DE102008022945A1 (en) | 2008-05-09 | 2009-12-03 | Irwin Industrial Tools Gmbh | Drilling tool, in particular twist drills |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0685629A3 (en) | 1996-12-18 |
| US5553682A (en) | 1996-09-10 |
| AU2039595A (en) | 1995-12-14 |
| TW284718B (en) | 1996-09-01 |
| AU690659B2 (en) | 1998-04-30 |
| FI952565A (en) | 1995-12-05 |
| KR960000438A (en) | 1996-01-25 |
| JPH07329049A (en) | 1995-12-19 |
| DE4419641A1 (en) | 1995-12-07 |
| FI108622B (en) | 2002-02-28 |
| FI952565A0 (en) | 1995-05-26 |
| CZ82895A3 (en) | 1995-12-13 |
| DE59510316D1 (en) | 2002-09-19 |
| CA2150164C (en) | 2001-02-27 |
| CA2150164A1 (en) | 1995-12-05 |
| HU9501624D0 (en) | 1995-07-28 |
| PL308889A1 (en) | 1995-12-11 |
| ES2181759T3 (en) | 2003-03-01 |
| EP0685629A2 (en) | 1995-12-06 |
| DK0685629T3 (en) | 2002-12-02 |
| ATE222321T1 (en) | 2002-08-15 |
| HUT71760A (en) | 1996-01-29 |
| CN1116683A (en) | 1996-02-14 |
| HU216598B (en) | 1999-07-28 |
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