EP0937860A1 - Drill and or chisel tool - Google Patents
Drill and or chisel tool Download PDFInfo
- Publication number
- EP0937860A1 EP0937860A1 EP98811179A EP98811179A EP0937860A1 EP 0937860 A1 EP0937860 A1 EP 0937860A1 EP 98811179 A EP98811179 A EP 98811179A EP 98811179 A EP98811179 A EP 98811179A EP 0937860 A1 EP0937860 A1 EP 0937860A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grooves
- head
- discharge
- tool according
- 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
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000005553 drilling Methods 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
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
- E21B10/44—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
-
- 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
- E21B10/40—Percussion drill bits with leading portion
-
- 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
Definitions
- the invention relates to a drilling and / or chisel tool with one of the receptacles Drive units adapted plug-in end to which a shaft is attached in the drilling direction adjoins at least one helical discharge groove open to the circumference, wherein a drill head with a diameter substantially corresponding to the shaft is adjacent, the one or in recesses that are open to the free end has several carbide inserts, starting from one centering part in three Radial directions with at least to the circumference of the head Cutting areas are provided and between the cutting areas of the head three Has circumferentially open head grooves that are connected to the discharge grooves.
- the tools of the type mentioned are mainly used to edit Rock, concrete and masonry.
- these are with an insertion end provided which of the relevant recording of the application find Drive unit is adapted.
- drive devices for example Hammer drills, combination hammers and chisel hammers.
- a shank at the insertion end of the tool which has at least one helical discharge groove open to the circumference.
- This helical discharge groove is used to transport the cuttings that come from the drill head, which is arranged adjacent to the shaft is dismantled.
- the drill head with one or more carbide inserts, which have the free end protrude slightly from the drill head and are arranged in recesses which are open towards the free end of the drill head.
- the arrangement of hard metal in the manner of a star has proven particularly useful Arrangement of cutting areas, according to which of a centrally arranged Centering part in three directions at essentially the same angle Carbide inserts run radially up to at least the circumference of the head.
- This kind the arrangement of hard metal inserts leads to advantages in the drilling capacity in the Accuracy of the bore to be produced and in the quiet and therefore low-vibration Operating mode.
- the invention is therefore based on the object of a drilling and / or chiseling tool with the advantageous arrangement of hard metal inserts mentioned above to further develop that it can also be done using easily controllable forming processes can be produced economically.
- the object is achieved in that the drilling and / or chiseling tool has at most two discharge grooves.
- a preferred one, which is particularly advantageous with regard to the removal of the cuttings effective embodiment is that one of the two discharge grooves with two Head grooves is connected.
- This embodiment not only has advantages from the perspective of FIG Manufacture and use, but it also leads to an extraordinary appearance attractive design of the head. This argument is also for the economic Success of the tool according to the invention is important because an operator already From the visual impression, the tool is assessed as stable and efficient and trust him accordingly.
- At least one of the Head grooves is connected to both discharge grooves. This condition is easy to meet, by providing the head groove in question with a length such that both of them Discharge grooves cuts.
- the removal grooves can be formed with a view to an easily controllable forming uniformly distributed deformation forces, for example with discharge grooves, have the same cross-sectional areas.
- the removal grooves can have different cross-sectional areas. This opens up the possibility, for example, that discharge groove, which is connected to two head grooves, somewhat in the cross-sectional area to be made larger so that the drilling cuttings resulting from two head grooves are unimpeded can be transported.
- the three head grooves have essentially the same cross-sectional areas.
- the head is provided with cutouts which are open towards the free end, in which one or more hard metal inserts are arranged.
- These recesses can be designed in different ways, but preferably penetrate the drilling direction Face of the head over its entire diameter. So they can Recesses run in a star shape in the form of a slot.
- a one-piece carbide insert as a star can form the recess be shaped. For example, four are available when using multiple carbide inserts Parts, namely their three with radially star-shaped cutting areas and a centering part arranged in the middle.
- the tool shown in FIGS. 1 and 2 is designed, for example, as a drilling tool and has an insertion end 1, a shaft 2 and a head 3.
- the insertion end 1 is on a not shown drawing of a drive device adapted and thus has means for connection to this recording.
- This Means consist of axially closed locking grooves 4 and one side axially open driving grooves 5.
- the shaft 2 is provided with two discharge grooves 6, 7. Both discharge grooves 6,7 are Open to the extent and have the same cross-sectional areas in the present example.
- the head 3 is provided with cutouts 8 which are open towards the free end.
- Recesses 8 are - as also shown in FIG. 2 - a one-piece in the present example Tungsten carbide insert 9 arranged, which, starting from a centering part 9b in three Cutting areas 9a extending radially up to the circumference of the head 8 having.
- three head grooves 10, 11, 12 are provided which run parallel to the main axis and to the circumference of the head 3 are open.
- These head grooves 10,11,12 are with the Removal grooves 6, 7 connected.
- the head grooves 10, 12 are with the Discharge groove 6 and the top groove 11 connected to the discharge groove 7.
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- 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
Description
Die Erfindung betrifft ein Bohr- und/oder Meisselwerkzeug mit einem der Aufnahme von Antriebsgeräten angepasstem Einsteckende, an das sich in Bohrrichtung ein Schaft mit wenigstens einer zum Umfang hin offenen, wendelförmigen Abfuhrnut anschliesst, wobei dem Schaft ein Bohrkopf mit im wesentlichen dem Schaft entsprechenden Durchmesser benachbart ist, der in Aussparungen, die zum freien Ende hin offen sind, einen oder mehrere Hartmetalleinsätze aufweist, die ausgehend von einem Zentrierteil in drei Richtungen radial bis zumindest zum Umfang des Kopfes verlaufend mit Schneidbereichen versehen sind und zwischen den Schneidbereichen der Kopf drei zum Umfang hin offene Kopfnuten aufweist, die mit den Abfuhrnuten in Verbindung stehen.The invention relates to a drilling and / or chisel tool with one of the receptacles Drive units adapted plug-in end to which a shaft is attached in the drilling direction adjoins at least one helical discharge groove open to the circumference, wherein a drill head with a diameter substantially corresponding to the shaft is adjacent, the one or in recesses that are open to the free end has several carbide inserts, starting from one centering part in three Radial directions with at least to the circumference of the head Cutting areas are provided and between the cutting areas of the head three Has circumferentially open head grooves that are connected to the discharge grooves.
Die Werkzeuge der eingangs genannten Art dienen hauptsächlich der Bearbeitung von Gestein, Beton und Mauerwerk. Zum Antrieb der Werkzeuge sind diese mit einem Einsteckende versehen, welches der jeweils betreffenden Aufnahme des Anwendung findenden Antriebsgerätes angepasst ist. Dabei kommen als Antriebsgeräte beispielsweise Bohrhämmer, Kombihämmer und Meisselhämmer in Betracht.The tools of the type mentioned are mainly used to edit Rock, concrete and masonry. To drive the tools, these are with an insertion end provided which of the relevant recording of the application find Drive unit is adapted. Here come as drive devices, for example Hammer drills, combination hammers and chisel hammers.
In Bohrrichtung schliesst sich an das Einsteckende des Werkzeuges ein Schaft an, welcher zumindest eine zum Umfang hin offene, wendelförmige Abfuhrnut aufweist. Diese wendelförmige Abfuhrnut dient dem Transport des Bohrkleins, welches vom Bohrkopf, welcher dem Schaft benachbart angeordnet ist, abgebaut wird. Zu diesem Zwecke ist der Bohrkopf mit einem oder mehreren Hartmetalleinsätzen versehen, welche das freie Ende des Bohrkopfes geringfügig überragen und in Aussparungen angeordnet sind, welche zum freien Ende des Bohrkopfes hin offen sind.In the direction of drilling there is a shank at the insertion end of the tool, which has at least one helical discharge groove open to the circumference. This helical discharge groove is used to transport the cuttings that come from the drill head, which is arranged adjacent to the shaft is dismantled. For this purpose the Provide the drill head with one or more carbide inserts, which have the free end protrude slightly from the drill head and are arranged in recesses which are open towards the free end of the drill head.
Besonders bewährt hat sich die Anordnung von Hartmetall nach Art einer sternförmigen Anordnung von Schneidbreichen, gemäss welcher von einem mittig angeordneten Zentrierteil nach drei Richtungen unter im wesentlichen gleichen Winkel Hartmetalleinsätze radial bis zumindest zum Umfang des Kopfes hin verlaufen. Diese Art der Anordnung von Hartmetalleinsätzen führt zu Vorteilen in der Bohrleistung, in der Genauigkeit der herzustellenden Bohrung sowie in der ruhigen und damit vibrationsarmen Betriebsart.The arrangement of hard metal in the manner of a star has proven particularly useful Arrangement of cutting areas, according to which of a centrally arranged Centering part in three directions at essentially the same angle Carbide inserts run radially up to at least the circumference of the head. This kind the arrangement of hard metal inserts leads to advantages in the drilling capacity in the Accuracy of the bore to be produced and in the quiet and therefore low-vibration Operating mode.
Zwischen den Schneidbereichen der Hartmetalleinsätze weisen die in der vorgenannten Art aufgebauten Werkzeuge Kopfnuten auf, die parallel zur Hauptachse verlaufen und zum Umfang des Kopfes hin offen sind. Diese Kopfnuten sind wichtig, um das abgebaute Bohrklein den Abfuhrnuten zuzuführen. Im Hinblick auf die dadurch notwendige Verbindung zwischen Kopfnut und Abfuhrnut sind die bekannten Werkzeuge mit einer analogen Zahl an Kopfnuten und Abfuhrnuten versehen, was dazu führt, dass die Werkzeuge mit drei Kopfnuten auch drei Abfuhrnuten aufweisen.Between the cutting areas of the hard metal inserts, those in the aforementioned Kind of built-on tools head grooves that run parallel to the main axis and are open to the circumference of the head. These head grooves are important to the degraded Feed drill cuttings to the discharge grooves. With regard to the necessary Connection between head groove and discharge groove are the known tools with a analog number of head grooves and discharge grooves, which leads to the Tools with three head grooves also have three discharge grooves.
Die Herstellung von drei Abfuhrnuten schränkt die zur Anwendung gelangenden Produktionsverfahren ein. So kommt nebst der spanabhebenden Bearbeitung von den Umformverfahren allenfalls noch Rollwalzen in Betracht. An sich können beide Verfahren derart entwickelt werden, dass sie wirtschaftlich sind. Jedoch bedarf diese Weiterentwicklung zur Wirtschaftlichkeit eines besonderen apparativen Aufwandes und ist nicht von vornherein von jedermann beherrschbar.The production of three discharge grooves limits the production processes used on. So besides the machining comes from Forming processes at most roll rollers. As such, both methods can be used be developed in such a way that they are economical. However, this further development is required to the economic viability of a special expenditure on equipment and is not of controllable by everyone in advance.
Der Erfindung liegt demnach die Aufgabe zugrunde, ein Bohr- und/oder Meisselwerkzeug mit der eingangs genannten vorteilhaften Anordnung von Hartmetalleinsätzen derart weiterzubilden, dass es sich auch unter Anwendung einfach beherrschbarer Umformverfahren wirtschaftlich herstellen lässt.The invention is therefore based on the object of a drilling and / or chiseling tool with the advantageous arrangement of hard metal inserts mentioned above to further develop that it can also be done using easily controllable forming processes can be produced economically.
Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass das Bohr- und/oder Meisselwerkzeug höchstens zwei Abfuhrnuten aufweist.According to the invention, the object is achieved in that the drilling and / or chiseling tool has at most two discharge grooves.
Das Vorsehen von höchstens zwei Abfuhrnuten am geschilderten Werkzeug ermöglicht den Einsatz einfacher Herstellverfahren. Nebst der an sich noch immer möglichen spanabhebenden Herstellung eröffnet die erfindungsgemässe Ausbildung des Werkzeuges die Verwendung einer Umformung durch Drallwalzen. Diese Herstellungsart führt beispielsweise gegenüber der Herstellung durch Rollwalzen zu Vorteilen bei der Beherrschbarkeit und vermindert die Aufwendungen im Zusammenhang mit Produktionsmaschinen.The provision of a maximum of two discharge grooves on the described tool enables the use of simple manufacturing processes. In addition to the still possible in itself Machining production opens up the design of the tool according to the invention the use of swirl roll forming. This type of manufacture leads for example, compared to the production by roller rolling at the advantages of Controllability and reduces expenses related to Production machines.
Besonders bewährt hat sich beim erfindungsgemässen Werkzeug das Vorsehen von zwei Abfuhrnuten, dies sowohl aus der Sicht der Herstellung als auch aus der Sicht des Einsatzes. Bei der Herstellung treten im Rahmen der Umformung symmetrische und damit leicht beherrschbare Verformungskräfte auf. Beim Einsatz der Werkzeuge führen zwei Abfuhrnuten zu einem problemlosen und ungehinderten Abbau des Bohrkleins.The provision of two has proven particularly useful in the tool according to the invention Removal grooves, both from the point of view of manufacture and from the point of view of use. During the manufacturing process, symmetrical and therefore occur during the forming process easily controllable deformation forces. When using the tools, two lead Discharge grooves for problem-free and unhindered removal of the cuttings.
Zur Verbindung der Abfuhrnuten mit den Kopfnuten bieten sich verschieden Möglichkeiten an. Eine bevorzugte, sich insbesondere hinsichtlich der Abfuhr des Bohrkleins vorteilhaft auswirkende Ausführungsform besteht darin, dass eine der zwei Abfuhrnuten mit zwei Kopfnuten verbunden ist. Diese Ausführungsform hat nicht nur Vorteile aus der Sicht der Herstellung und des Einsatzes, sondern sie führt auch optisch zu einer ausserordentlich ansprechenden Gestaltung des Kopfes. Auch dieses Argument ist für den wirtschaftlichen Erfolg des erfindungsgemässen Werkzeuges wichtig, da eine Bedienungsperson schon vom optischen Eindruck her das Werkzeug als standfest und leistungsfähig beurteilt und ihm somit entsprechendes Vertrauen entgegenbringt.There are various options for connecting the discharge grooves to the head grooves on. A preferred one, which is particularly advantageous with regard to the removal of the cuttings effective embodiment is that one of the two discharge grooves with two Head grooves is connected. This embodiment not only has advantages from the perspective of FIG Manufacture and use, but it also leads to an extraordinary appearance attractive design of the head. This argument is also for the economic Success of the tool according to the invention is important because an operator already From the visual impression, the tool is assessed as stable and efficient and trust him accordingly.
Bei der Gestaltung des Kopfes bieten sich im Zusammenhang mit den Kopfnuten weitere Möglichkeiten an, welche sich wiederum vorteilhaft auf den Transport des Bohrkleins auswirken. So besteht eine weitere bevorzugte Variante darin, dass zumindest eine der Kopfnuten mit beiden Abfuhrnuten verbunden ist. Diese Bedingung ist einfach erfüllbar, indem die betreffende Kopfnut mit einer derartigen Länge versehen wird, dass sie beide Abfuhrnuten schneidet.When designing the head, there are more in connection with the head grooves Opportunities, which in turn are advantageous to the transportation of the cuttings impact. Another preferred variant is that at least one of the Head grooves is connected to both discharge grooves. This condition is easy to meet, by providing the head groove in question with a length such that both of them Discharge grooves cuts.
Die Abfuhrnuten können im Hinblick auf eine leicht beherrschbare Umformung durch gleichmässig verteilte Verformungskräfte, beispielsweise mit Abfuhrnuten, versehen sein, die gleiche Querschnittsflächen aufweisen.The removal grooves can be formed with a view to an easily controllable forming uniformly distributed deformation forces, for example with discharge grooves, have the same cross-sectional areas.
Gemäss einer weiteren Ausgestaltung der Erfindung können die Abfuhrnuten unterschiedliche Querschnittsflächen aufweisen. Dies eröffnet beispielsweise die Möglichkeit, jene Abfuhrnut, die mit zwei Kopfnuten verbunden ist, in der Querschnittsfläche etwas grösser zu gestalten, so dass das aus zwei Kopfnuten resultierende Bohrklein ungehindert transportiert werden kann.According to a further embodiment of the invention, the removal grooves can have different cross-sectional areas. This opens up the possibility, for example, that discharge groove, which is connected to two head grooves, somewhat in the cross-sectional area to be made larger so that the drilling cuttings resulting from two head grooves are unimpeded can be transported.
Um den ruhigen Betrieb beim Einsatz der Bohrwerkzeuge nicht zu gefährden, weisen vorzugsweise die drei Kopfnuten im wesentlichen gleiche Querschnittsflächen auf.In order not to endanger the quiet operation when using the drilling tools, preferably point the three head grooves have essentially the same cross-sectional areas.
Wie eingangs erwähnt, ist der Kopf mit zum freien Ende hin offenen Aussparungen versehen, in welchen ein oder mehrere Hartmetalleinsätze angeordnet sind. Diese Aussparungen können verschiedenartig ausgebildet sein, durchsetzen aber vorzugsweise die bohrrichtungsseitige Stirnfläche des Kopfes über ihren gesamten Durchmesser. So können die Aussparungen sternartig in Form eines Schlitzes verlaufen. Nebst der Anordnung mehrerer Hartmetalleinsätze in diesen Aussparungen bietet es sich auch an, ein einstückig ausgebildeter Hartmetalleinsatz zu verwenden. Entsprechend der Anordnung der Aussparung kann ein solch einstückig ausgebildeter Hartmetalleinsatz als Stern geformt sein. Bei Verwendung mehrerer Hartmetalleinsätze bieten sich beispielsweise vier Teile an, nämlich deren drei mit radial sternförmig verlaufenden Schneidbereichen sowie ein mittig angeordneter Zentrierteil.As mentioned at the beginning, the head is provided with cutouts which are open towards the free end, in which one or more hard metal inserts are arranged. These recesses can be designed in different ways, but preferably penetrate the drilling direction Face of the head over its entire diameter. So they can Recesses run in a star shape in the form of a slot. In addition to the arrangement multiple carbide inserts in these recesses, it is also a good idea to use one-piece carbide insert. According to the arrangement such a one-piece carbide insert as a star can form the recess be shaped. For example, four are available when using multiple carbide inserts Parts, namely their three with radially star-shaped cutting areas and a centering part arranged in the middle.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispieles näher erläutert. Es zeigen:
- Fig. 1
- das erfindungsgemässe Werkzeug in Seitenansicht;
- Fig. 2
- das Werkzeug der Fig. 1 in einer Draufsicht auf den Bohrkopf.
- Fig. 1
- the tool according to the invention in side view;
- Fig. 2
- the tool of FIG. 1 in a plan view of the drill head.
Das den Fig. 1 und 2 entnehmbare Werkzeug ist beispielsweise als Bohrwerkzeug ausgebildet
und weist ein Einsteckende 1, einen Schaft 2 sowie einen Kopf 3 auf.The tool shown in FIGS. 1 and 2 is designed, for example, as a drilling tool
and has an insertion end 1, a
Das Einsteckende 1 ist an eine zeichnerisch nicht dargestellte Aufnahme eines Antriebsgerätes
angepasst und weist somit Mittel zur Verbindung mit dieser Aufnahme auf. Diese
Mittel bestehen zum einen aus axial geschlossenen Verriegelungsnuten 4 und einseitig
axial offenen Drehmitnahmenuten 5.The insertion end 1 is on a not shown drawing of a drive device
adapted and thus has means for connection to this recording. This
Means consist of axially closed locking
Der Schaft 2 ist mit zwei Abfuhrnuten 6, 7 versehen. Beide Abfuhrnuten 6,7 sind zum
Umfang hin offen und weisen im vorliegenden Beispiel gleiche Querschnittsflächen auf.The
Der Kopf 3 ist mit Aussparungen 8 versehen, die zum freien Ende hin offen sind. In diesen
Aussparungen 8 ist - wie auch Figur 2 zeigt - im vorliegenden Beispiel ein einstückiger
Hartmetalleinsatz 9 angeordnet, welcher ausgehend von einem Zentrierteil 9b in drei
Richtungen radial bis über den Umfang des Kopfes 8 hin verlaufende Schneidbereiche 9a
aufweist. Zwischen den radial verlaufenden Schneidbereichen 9a des Hartmetalleinsatzes
9 sind drei Kopfnuten 10,11,12 vorgesehen, die parallel zur Hauptachse verlaufen und
zum Umfang des Kopfes 3 hin offen sind. Diese Kopfnuten 10,11,12 sind mit den
Abfuhrnuten 6, 7 verbunden. Im gezeigten Beispiel sind die Kopfnuten 10,12 mit der
Abfuhrnut 6 und die Kopfnut 11 mit der Abfuhrnut 7 verbunden.The
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19807394A DE19807394A1 (en) | 1998-02-21 | 1998-02-21 | Drilling and / or chisel tools |
| DE19807394 | 1998-02-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0937860A1 true EP0937860A1 (en) | 1999-08-25 |
| EP0937860B1 EP0937860B1 (en) | 2001-11-21 |
Family
ID=7858546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98811179A Expired - Lifetime EP0937860B1 (en) | 1998-02-21 | 1998-11-27 | Drill and or chisel tool |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6116361A (en) |
| EP (1) | EP0937860B1 (en) |
| JP (1) | JP4361983B2 (en) |
| CN (2) | CN1226627A (en) |
| DE (2) | DE19807394A1 (en) |
| DK (1) | DK0937860T3 (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19942986A1 (en) * | 1999-09-09 | 2001-03-15 | Hilti Ag | Drilling tool |
| DE19942987A1 (en) * | 1999-09-09 | 2001-03-15 | Hilti Ag | Drilling tool |
| DE19942985A1 (en) * | 1999-09-09 | 2001-03-15 | Hilti Ag | Drilling tool |
| US6374931B1 (en) | 1999-11-03 | 2002-04-23 | Relton Corporation | Multiple cutter rotary hammer bit |
| DE10006936A1 (en) * | 2000-02-16 | 2001-08-23 | Hilti Ag | Rock drilling tool |
| DE10053344A1 (en) * | 2000-10-27 | 2002-05-08 | Hilti Ag | rock drill |
| DE10122299C2 (en) * | 2001-05-08 | 2003-11-13 | Tracto Technik | Rock drilling method |
| GB2393681A (en) * | 2002-10-03 | 2004-04-07 | Black & Decker Inc | Masonry drilling tool |
| JP4500748B2 (en) * | 2005-09-02 | 2010-07-14 | 住友電工ハードメタル株式会社 | Throw-away tool |
| US7861807B2 (en) * | 2008-12-03 | 2011-01-04 | Black & Decker Inc. | Drill bit including one piece cutting head |
| DE102010013723A1 (en) | 2010-03-31 | 2011-10-06 | Gdf Suez | Method for operating a horizontal drilling device and horizontal drilling device |
| CN104105471B (en) * | 2012-02-14 | 2018-03-13 | 宝洁公司 | Skin symbiosis prebiotics agent and the local use comprising its composition |
| CN103358404B (en) * | 2012-03-28 | 2017-03-29 | 博世电动工具（中国）有限公司 | Drilling tool and its drill bit |
| CN103419284A (en) * | 2012-05-21 | 2013-12-04 | 博世电动工具（中国）有限公司 | Drill bit |
| CN102704844A (en) * | 2012-06-20 | 2012-10-03 | 常熟市平冶机械有限公司 | Metal plate drill bit |
| EP3181261A1 (en) * | 2015-12-15 | 2017-06-21 | HILTI Aktiengesellschaft | Method of manufacturing, tool scaffold and drill |
| CN108422019B (en) * | 2018-04-25 | 2023-09-29 | 湖北鑫运祥科技发展有限公司 | Three-blade split drill bit and manufacturing method thereof |
| US20220219306A1 (en) * | 2021-01-14 | 2022-07-14 | Milwaukee Electric Tool Corporation | Tool bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2075409A (en) * | 1980-05-09 | 1981-11-18 | Vnii Tugoplavkikh | Drills |
| DE3820695A1 (en) * | 1988-06-18 | 1989-12-21 | Hawera Probst Kg Hartmetall | ROCK DRILL |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2129913A1 (en) * | 1971-06-16 | 1972-12-21 | Hilti Ag | Rock drill |
| DE3742661A1 (en) * | 1987-12-16 | 1989-07-13 | Hawera Probst Kg Hartmetall | ROCK DRILL |
| DE4338667A1 (en) * | 1993-11-12 | 1995-05-18 | Hilti Ag | Drilling tool |
| DE4407119A1 (en) * | 1993-12-11 | 1995-06-14 | Hawera Probst Kg Hartmetall | Rock drill |
| DE19516270C1 (en) * | 1995-05-09 | 1997-01-30 | Heller Dinklage Gmbh Geb | Drilling tool |
| DE19545648A1 (en) * | 1995-12-07 | 1997-06-12 | Hilti Ag | Rotary impact twist drill |
-
1998
- 1998-02-21 DE DE19807394A patent/DE19807394A1/en not_active Withdrawn
- 1998-11-27 DE DE59802704T patent/DE59802704D1/en not_active Expired - Lifetime
- 1998-11-27 DK DK98811179T patent/DK0937860T3/en active
- 1998-11-27 EP EP98811179A patent/EP0937860B1/en not_active Expired - Lifetime
-
1999
- 1999-01-07 CN CN99101010A patent/CN1226627A/en active Pending
- 1999-01-07 CN CNB031424392A patent/CN1313255C/en not_active Expired - Fee Related
- 1999-02-18 US US09/252,191 patent/US6116361A/en not_active Expired - Lifetime
- 1999-02-22 JP JP04284699A patent/JP4361983B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2075409A (en) * | 1980-05-09 | 1981-11-18 | Vnii Tugoplavkikh | Drills |
| DE3820695A1 (en) * | 1988-06-18 | 1989-12-21 | Hawera Probst Kg Hartmetall | ROCK DRILL |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4361983B2 (en) | 2009-11-11 |
| CN1313255C (en) | 2007-05-02 |
| DE59802704D1 (en) | 2002-02-21 |
| CN1226627A (en) | 1999-08-25 |
| DK0937860T3 (en) | 2002-05-21 |
| US6116361A (en) | 2000-09-12 |
| DE19807394A1 (en) | 1999-08-26 |
| EP0937860B1 (en) | 2001-11-21 |
| JPH11285911A (en) | 1999-10-19 |
| CN1631636A (en) | 2005-06-29 |
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