EP3150347B1 - Foret - Google Patents

Foret Download PDF

Info

Publication number
EP3150347B1
EP3150347B1 EP16191578.0A EP16191578A EP3150347B1 EP 3150347 B1 EP3150347 B1 EP 3150347B1 EP 16191578 A EP16191578 A EP 16191578A EP 3150347 B1 EP3150347 B1 EP 3150347B1
Authority
EP
European Patent Office
Prior art keywords
drill
supporting member
cemented carbide
carbide body
groove
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
Application number
EP16191578.0A
Other languages
German (de)
English (en)
Other versions
EP3150347A1 (fr
Inventor
David Scheck
Alexander Zürn
Rainer Eggers
Martin Stumpp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Drebo Werkzeugfabrik GmbH
Original Assignee
Drebo Werkzeugfabrik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Drebo Werkzeugfabrik GmbH filed Critical Drebo Werkzeugfabrik GmbH
Publication of EP3150347A1 publication Critical patent/EP3150347A1/fr
Application granted granted Critical
Publication of EP3150347B1 publication Critical patent/EP3150347B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B28D1/146—Tools therefor

Definitions

  • the invention relates to a drill, according to the preamble of claim 1.
  • Such drills have a significantly higher service life when drilling stone or concrete compared to pure steel drills and are therefore used on a large scale.
  • the drilling dust removal is typically done by drill bits, but sometimes is not sufficient.
  • suction drills which have a central suction hole, which is connected to a vacuum source.
  • the resulting drilling dust should be removed through these drill bits through the drill.
  • the invention has for its object to provide a drill according to the preamble of claim 1, which is improved in terms of life.
  • the solution according to the invention results in a significantly improved service life. While the suction compared to known suction drills is the same size or may be improved according to design, according to the invention by the support element apparently vibrations and resonant vibrations in the hard metal body prevented, so that this typically fairly brittle body is much less prone to fractures, which significantly improves the life.
  • the support element according to the invention supports, as it were in the manner of a bridge, the cemented carbide body centrally, that is to say at the point at which the extraction bore exists. Even if the support element itself is made of steel and thus has a lower hardness than the hard metal body, it fulfills the support function, in particular if there is an additional solder joint between the support element and the Häusall stresses.
  • This solder joint centrally receives the central shocks exerted by the impact of the drill on the central tip and the main cutting edge of the cemented carbide body, and passes them to the support element.
  • the support element itself is thus particularly stressed centrally, but can absorb and distribute this load well by the two-sided support.
  • the support element is adapted to the hard metal body in terms of its radial thickness and in particular is approximately equal.
  • the support element is received in a precision bore, by press-fitting.
  • the applied pressing force can be 1000 Newton, but for example 20 kilonewton. Even with a press fit, the solder used for soldering the cemented carbide body flows into the interface between the support element and the drill head, resulting in better reception and support.
  • the solution according to the invention is not limited to a drill with only one cemented carbide body which extends across the drill head, a so-called double cutter.
  • the solution according to the invention can also be used in a so-called multi-cutter, for example, a three-cutter, which has a star-shaped cemented carbide body, or in a multi-cutter with a cross-shaped cemented carbide body.
  • the support element according to the shape of the hard metal body from the perspective of the drill bit viewed below the carbide body and always always above the central suction hole.
  • the invention can also be used in a multi-cutter with main cutting and transverse thereto extending cutting inserts, in which case the support member extends below the main cutting plate.
  • the support element may preferably extend transversely across it, ie from one side of the drill head to the other side, in a groove of the drill head that is open in the forward direction. This groove can be dimensioned so that extends in it at the same time above the support member of the hard metal body.
  • the support element itself may have a groove which receives the cemented carbide body.
  • the rearward support of the cemented carbide body in the central region and the design of the support element as a bridge are essential.
  • the support element has a constant configuration, viewed from the cross-sectional area over its course across the drill head away.
  • the daughter holes extend in a multiple arrangement laterally adjacent to the support element, preferably towards the end face of the drill head.
  • two or four subsidiary bores with an accumulated cross section may be provided, which essentially corresponds to the cross section of the suction bore.
  • the daughter holes then preferably end at different axial locations. This reduces the notch effect of the daughter holes at their end. In addition, will be reduces the swirling of the air flow, the air flow becomes more laminar.
  • Such subsidiary suction holes can be realized for example by spark erosion without further notice.
  • the arrangement and configuration of the daughter holes is not limited to the coaxial alignment.
  • the daughter holes may also diverge from one another; In this case, it is preferred that their skew angles are different from each other so that they terminate at the same radial location in the end face of the drill head at different axial height in the suction hole even at the mouth.
  • the Zu Kunststoffkanäle extend with hollow-section preferably axially parallel, or spirally. They reduce the flow resistance in the borehole, since the supply of supply air is facilitated, so that the overall flow efficiency is improved.
  • the supply air ducts preferably also end in the end face, at a location that is spaced from the mouth of the daughter holes such that the extraction of cuttings and drilling debris is optimized.
  • the central slot is first drilled. If necessary, an additional precision bore can be made for receiving the support element according to the invention; however, this is optional.
  • the support element is then pressed cold thereafter, after the receiving area for the support element is created.
  • the support element merely supports the hard metal plate, it is subsequently inserted thereon; if a U-shaped receptacle of the Hartmentallplatten stresses is provided, the corresponding groove is now milled, and in any case subsequently used the carbide body.
  • the hard metal plate is soldered, the solder also runs in the press nip for the support element.
  • the drill is a double-cutter or multi-cutter and the hard metal body forms a main cutting edge of the drill, optionally further carbide body extending to form side cutting transverse to the main cutting hard metal body.
  • At least one subsidiary bore opens at least partially in an end face of the drill.
  • the support element supports the hard metal body on its side opposite the drill bit, over the entire extension of the cemented carbide body through the drill head.
  • the support element receives the cemented carbide body.
  • the recording can take place in any suitable manner, in particular in a substantially U-shaped groove.
  • the support element is held by the exerted pressing forces and / or the soldering and in turn supports the cemented carbide body.
  • the pressing force is due to the fact that the support element is introduced into a corresponding and suitably shaped recess in the drill head. If the recess is a groove, it is advantageous to design these with inner radii in order to achieve the lowest possible notch effect.
  • the cemented carbide body has to be soldered into the drill head anyway.
  • solder is needed, and due to the capillary action, the solder runs as it were automatically into the boundary layer between the recess and the support element, so that in this respect results in a secure anchoring.
  • the length of the support element, which is insofar then pin-shaped the same size as the diameter of the drill head, or smaller than this.
  • the support element is designed as a pin, which fits into the suction hole.
  • the pin is pressed in and soldered there and supports the carbide body just at the point where he needs the most support, namely in the middle.
  • the support element with at least one shoulder which is positively against a corresponding shoulder in the drill head at the point in or on which the support element is received. This solution is favorable for supporting the axial forces which are introduced during the impact drilling on the support element via the hard metal body.
  • the paragraph corresponds in shape preferably a paragraph in the drill head and is intended for investment in this.
  • the shoulder also preferably extends at an angle to the drilling axis which is between 0 and 90 degrees and in particular is smaller than 0 and greater than 90 degrees.
  • a corresponding shoulder may also be an inclined surface, at any suitable angle to the drill axis, for example at an angle of 45 degrees. It can also be provided several paragraphs, paragraphs with different angles.
  • the support element with a rear groove.
  • the supportability of the support element is thereby not diminished, especially when the support element is mainly connected by the pressing force and / or the solder joint with the drill head and is mainly in the suction hole.
  • a rear recess in the support member may be beneficial.
  • the recess in this case preferably has the diameter of the suction hole and ends in a concave end face.
  • the skew angle of the daughter holes ie the angle at which the daughter holes extend to the drilling axis, constant. Nevertheless, in order to produce a different point of impact between the drill axis and daughter axis, there is a radial offset of the daughter holes. In this respect, then extends a subsidiary bore radially slightly further outward than another subsidiary bore. This leads to a distance between the intersections of the axes, which is favorable for the prevention and reduction of notch effects.
  • At least one channel is provided on a lateral surface of the drill, which extends to the drill head and in particular opens into the end face of the drill and is designed as a supply air duct.
  • a drill 10 shows a drill head 12 with a hard metal body 14 which extends in the manner of a double cutter across the drill head and projects in a conventional manner this.
  • a central suction hole 16 which is connected to a vacuum source, in the region of the shaft of the drill 10, which is not shown here and can be carried out in any known manner.
  • the suction hole 16 opens into subsidiary suction holes, of which a daughter suction hole 18 in Fig. 1 is shown.
  • a support element 20 extends in the manner of a bridge across the drill 10, or more precisely, over the drill head 12 of time.
  • On the support member 20 of the hard metal body 14 is flat, in such a way that it is supported over its entire rear surface 22 on the support member 20. It completely covers the central suction hole in the thickness of the cemented carbide body 14, but the suction hole 16 has a larger diameter than the thickness or thickness of the cemented carbide body 14 and the support member 20, so that attachment of daughter holes 18 is possible.
  • the support member 20 is radially outwardly, ie radially outside of the suction hole 16, supported on the drill head 12 surface. This embodiment allows maximum area utilization, so that the surface pressure is as low as possible by the initiated shocks, which is derived via the support member 20 to the "meat" of the drill head 12.
  • secondary cutting plates 30 and 32 radially offset on the outside of an end face 34, but offset relative to the hard metal body 14 by 90 °, arranged and received in correspondingly shaped grooves of the drill head 12 in a conventional manner.
  • Fig. 3 can be seen as the end face 34 of the drill 10 according to Fig. 1 and Fig. 2 looks.
  • Like reference numerals indicate similar parts here as well as in the other figures.
  • Radially outside the suction hole 16 the daughter hole 18 is realized, which opens into the end face 34.
  • the central suction hole 16 is also shown opening into the end face 34, it is understood that instead only the daughter holes 18 can end there. Even if only one daughter bore 18 is shown here, it will be understood that instead of this any number of, for example, four daughter holes can be realized.
  • Fig. 4 and Fig. 5 it can be seen in which way the support element 20 can also be realized.
  • the support element 20 is realized as a pin with a circular cross-section.
  • Such a solution reduces the notch effect, as they arise in a rectangular groove in the groove corners, but the surface pressure is somewhat increased.
  • Harmetallores 14 is supported in particular in the central region of the support member 20.
  • the support member 20 extends slightly through the drill bit 12, but ends before the radial end of the hard metal body.
  • the support element 20 is pressed into the drill head, in such a way that it is mounted symmetrically to the drill head.
  • Fig. 7 shows a further embodiment of a drill according to the invention.
  • the same parts correspond to the same reference numerals and therefore require no further explanation.
  • the support member is cylindrical and in this embodiment has a height corresponding to about two thirds of the maximum height of the capital body 14.
  • the support element 20 can also be shorter, for example half as long as the height of the hard metal body 14, or even longer, for example two or three times as long as the height of the hard metal body 14.
  • the support member 20 is pressed in this embodiment with a considerable pressing force, the pressing force can be equal to or higher than the pressing force with which the hard metal plate is introduced. It is also possible, the hard metal body 14 which can also be referred to as a hard metal plate, use only loosely, ie without pressing force, in which case the diameter of the support member may be slightly larger, for example by 0.2 mm, than the diameter of the hard metal body 14.
  • the support member 20 is preferably at least partially provided with solder, which establishes a secure connection between the side wall of the suction hole 16 and the support member 20.
  • the support member has so far no radial support, but a support on flanks of the suction hole 16.
  • the suction hole 16 is insofar regarded as a groove, which causes the support of the support member 20 at their flanks.
  • the hard metal body is also supported in this solution at its groove bottom, which extends outside of the suction hole 16.
  • the support is either direct or indirect; indirectly when the solder also extends between the rear surface of the hard metal body 14 there and the groove bottom.
  • Fig. 7A shows an end view of the drill bit of the embodiment according to Fig. 7 , For reasons of simple illustration, the mouths of the daughter channels of the suction hole 16 are not shown.
  • FIG. 8 Another embodiment of the invention is made Fig. 8 seen.
  • the hard metal body 14 is received in an additional groove 42 in the support member 20.
  • the support member has the same diameter as the suction hole and a slot with dimensions corresponding to the dimensions of the cemented carbide body also in this solution.
  • the hard metal body is smaller in thickness than the diameter of the suction hole or the suction channel 16, and the support member 20 is in turn as in the embodiment according to Fig. 7 pressed into the suction hole and preferably soldered there.
  • the embodiment according to Fig. 8A corresponds in this respect to the embodiment according to Fig. 8 , It can be seen that the support element 20 reaches the end face 48 and is visible on this.
  • FIG. 9 Another embodiment, the embodiment according to Fig. 8 , is out Fig. 9 seen.
  • the support member 20 has an additional groove 42 which extends through its entire diameter.
  • the hard metal body 14 is in turn received in this additional groove 42 and supported there both rearward and laterally.
  • the diameter of the support element 30 is greater than the diameter of the suction channel 16.
  • the support element 20 is received in the drill head 12 in such a way that increases over paragraphs 44 and 46, the diameter of the support member 20 from back to front.
  • the support member extends at the height of the hard metal body 14 to the minor cutting plates 30 and 32. It is understood that in a modified embodiment, the support member may also extend with a slightly smaller diameter and 30 and 32 ends before the secondary cutting plates ,
  • the support member 20 is also in this embodiment substantially cylindrical, but with inclined surfaces.
  • An end face 48 of the drill is largely occupied by the support member 20 and is conical in a conventional manner.
  • the drill 10 As is usual with suction drills, it is provided in the drill 10 according to the invention to manage without drill-dust removal grooves on the outside of the drill. Rather, the drilling dust is discharged internally through the auger through the suction bore 16.
  • the supply air to the drill head 12 is via the gap that results between the borehole of the drill and the outer diameter 50 of the drill; in a manner known per se, this is less than the length of the hard metal body 14 transversely through the drill, which produces the borehole.
  • paragraphs 44 and 46 are each oblique.
  • the heel 46 which is the rear heel, has a surface normal 52 extending at an angle of 45 degrees to the bore 54.
  • the angle of the corresponding surface normals of paragraph 44 is greater, in the example case 55 degrees.
  • the radial extent of the paragraphs 44 and 46 is adaptable.
  • the radial extent of the shoulder 46 is greater than the radial extent of the shoulder 44 and is about half the diameter of the suction hole, while the radial extent of the further forward paragraph 44 is about one fifth of the radial diameter of the suction hole 16.
  • Fig. 10 is a further embodiment of the support member 20 can be seen.
  • the diameter of the support member 20 is again the same as the diameter of the suction hole 16, according to the embodiments of the Fig. 7 and 8th ,
  • the support member 20 is pressed and optionally additionally soldered.
  • the support element 20 supports the middle region of the hard metal body 14 and ends for this purpose on the rear surface 22 of the support element 14.
  • the support member 20 has a concave back surface 56 in this embodiment. This extends dome-shaped over the entire diameter of the rest of the cylindrical support member body and thus forms a concave end face of the suction hole sixteenth
  • the hard metal body 14 is otherwise butt-welded on the drill 10.
  • the hard metal body 14 is preferably a solid carbide head, which can be designed in a manner known per se, for example as a three-knife trimmer or as a four-cutter, and has correspondingly shaped cutting edges.
  • the embodiment according to Fig. 11 shows a butt-welded hard metal body 14 on the drill 10 in the rest.
  • the diameter of the substantially cylindrical support member 20 is greater than the diameter of the suction hole 16.
  • the suction hole 16 terminates in a dome-shaped rear surface 56 of the support member 20.
  • the outer diameter of the dome-shaped end face 56 corresponds to the inner diameter of the suction hole 16.
  • the dome-shaped Rear surface 56 is displaced forward relative to the shoulder 46, on which the support element 20 terminates, ie towards the drill tip.
  • a rear recess 58 is provided in the support member 20, the diameter also corresponds to the diameter of the suction channel 16.
  • the hard metal body may also be soldered.
  • FIG. 12 An embodiment of two daughter holes 18 and 19 is made Fig. 12 seen.
  • the daughter bores 18 and 19 terminate at different axial locations, corresponding to the distance a, in the central suction bore 16. In this way and by the round configuration of the end of the daughter bores 18 and 19, the notch effect is significantly reduced at this point. As can be seen, they extend without affecting them on the support member 20 and the hard metal body 14 along; and Out Fig. 13 a further embodiment of the drill 10 according to the invention can be seen.
  • the daughter bores 18 and 19 also extend obliquely to the drill axis 54 in this embodiment. The angle of the axes 60 and 62 to the axis 54 of the drill 10 is always the same.
  • the daughter bore 18 is slightly offset radially inwardly with its mouth opposite the mouth of the daughter bore 19 at the drill bit.
  • the daughter hole 19 extends slightly longer and in so far moved backwards relative to the daughter bore 18th
  • the transition of the daughter hole 18 to the suction hole 16 is chosen so that the support member 20 in any case does not protrude into the daughter hole 18; In this respect, the support element is not a flow obstacle. This of course applies in the same way for the daughter hole 19, the transition to the suction hole 16 is offset from the opposite to the rear.
  • the design of the support element 20 corresponds essentially to the embodiment according to the embodiment Fig. 8 , Again, an additional groove 42 is provided in which the hard metal body 14 extends and which carbide body 14 at the same time fills the additional groove 42.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (10)

  1. Foret avec un corps de carbure, qui est inséré, dans au moins une rainure d'une tête de forage, la rainure étant ouverte vers la pointe du foret, la rainure étant remplie par au moins une partie du corps de carbure et en particulier guidant le corps de carbure par un joint de soudure, où le corps de carbure est soutenu au moins Indirectement dans le fond de la rainure, éventuellement par la soudure, caractérisée que le foret (10) présente un forage d'aspiration (16) et qu'un élément de soutien (20) pour le corps de carbure (14) s'étend de travers par le forage d'aspiration (16), en particulier à travers la tête de forage (12), et enjambe ainsi celle-ci, le corps de carbure (14) étant soutenu par ledit élément de soutien (20), en particulier sur la base de la rainure (26), et/ou sur les flancs de la rainure, où l'élément de soutien (20) et le corps de carbure (14) sont faits de matériaux différents.
  2. Foret selon la revendication 1, caractérisé en ce que l'élément de soutien (20) s'étend d'un côté de la tête de forage à l'autre côté de la tête de forage à travers celle-ci et traverse ainsi la tête de forage.
  3. Foret selon l'une des revendications précédentes, caractérisé en ce que l'élément de soutien (20) présente un profil géométrique ayant une section définie, par exemple, une section rectangulaire, une section circulaire, une section ovale ou une section trapézoïdale.
  4. Foret selon une revendications précédentes, caractérisé en ce que l'élément de soutien (20) présente sur son étendue des écarts essentiellement constants, en particulier avec un écart maximal de 20% de la section transversale, de préférence de moins de 2% de la section transversale.
  5. Foret selon l'une des revendications précédentes, caractérisé en ce que l'élément de soutien (20) est Inséré dans la rainure (24) dans un ajustement essentiellement sans jeu, en particulier avec un ajustement serrée.
  6. Foret selon l'une des revendications précédentes, caractérisé en ce que l'élément de soutien (20) est soudé dans la tête de forage (12), en particulier avec la même soudure, avec laquelle le corps de carbure (14) est soudé.
  7. Foret selon l'une des revendications précédentes, caractérisé en ce que le forage d'aspiration central (16) rejoint au moins un forage supplémentaire (18, 19), qui s'étend au moins partiellement latéralement à côté de l'élément de soutien (20) ou à travers l'élément de soutien.
  8. Foret selon l'une des revendications précédentes, caractérisé en ce que l'élément de soutien (20) accueille le corps de carbure (14) dans une rainure (24).
  9. Foret selon l'une des revendications précédentes, caractérisé en ce qu'au moins deux forages supplémentaires (18, 19) sont prévus, qui débouchent dans le forage d'extraction central (16) et qui présentent en particulier une longueur différente, de manière qu'ils aboutissent à des positions axiales du forage d'aspiration (16) différentes.
  10. Foret selon l'une des revendications précédentes, caractérisé en ce que l'élément de soutien (20) présente au moins une encoche (44, 46).
EP16191578.0A 2015-09-30 2016-09-29 Foret Active EP3150347B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015116587.2A DE102015116587A1 (de) 2015-09-30 2015-09-30 Bohrer

Publications (2)

Publication Number Publication Date
EP3150347A1 EP3150347A1 (fr) 2017-04-05
EP3150347B1 true EP3150347B1 (fr) 2018-12-26

Family

ID=57121047

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16191578.0A Active EP3150347B1 (fr) 2015-09-30 2016-09-29 Foret

Country Status (2)

Country Link
EP (1) EP3150347B1 (fr)
DE (1) DE102015116587A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202021103665U1 (de) 2021-07-08 2021-07-23 Karlsruher Institut für Technologie, Körperschaft des öffentlichen Rechts Bohreinsatz sowie Bohrfutteraufsatz für den Bohreinsatz

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948665A1 (de) 1979-12-04 1981-06-11 Friedrich Duss Maschinenfabrik GmbH & Co, 7265 Neubulach Schlagbohrer mit zentralem absaugkanal fuer das bohrklein
DE4339245A1 (de) * 1993-11-18 1995-05-24 Hilti Ag Spiralbohrer
DE19730665A1 (de) * 1997-07-17 1999-01-21 Fischer Artur Werke Gmbh Bohrer
DE29816202U1 (de) * 1998-09-09 1999-01-21 Plica Werkzeugfabrik Ag Bohrwerkzeug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202021103665U1 (de) 2021-07-08 2021-07-23 Karlsruher Institut für Technologie, Körperschaft des öffentlichen Rechts Bohreinsatz sowie Bohrfutteraufsatz für den Bohreinsatz
WO2023280906A1 (fr) 2021-07-08 2023-01-12 Hilti Aktiengesellschaft Trépan, accessoire de mandrin de forage pour le trépan et mandrin de forage pour le trépan

Also Published As

Publication number Publication date
DE102015116587A1 (de) 2017-03-30
EP3150347A1 (fr) 2017-04-05

Similar Documents

Publication Publication Date Title
DE102008004564B4 (de) Bohrwerkzeug mit Ausspitzung
DE102014207501B4 (de) Rotationswerkzeug, insbesondere Bohrer sowie Verfahren zur Herstellung eines solchen Rotationswerkzeugs
DE60127947T2 (de) Rotierendes schneidewerkzeug
DE602005001559T2 (de) Drehendes Werkzeug zur spanabhebenden Bearbeitung
EP0790877B1 (fr) Outil de percage
EP0884448B1 (fr) Trépan de roche avec rainures d'évacuation hélicoidales
DE60016782T2 (de) Selbstbohrender ankerbolzen
DE102015005250A1 (de) Bohr-Fas-Kombi-Werkzeug
DE102005005982A1 (de) Tieflochbohrer
EP1753574A1 (fr) Foret helicoical
EP1797277B1 (fr) Aleseuse dotee d'un element de coupe en forme de plaque ou de tete
DE19810193A1 (de) Bohrwerkzeug
WO2012159947A2 (fr) Foret à pierre pourvu de rainures de dégagement
DE2813850A1 (de) Bohrmeissel fuer erd- und gesteinsbohrungen
DE102017125901A1 (de) Gesteinsbohranordnung sowie Gesteinsbohrer
EP1564365A2 (fr) Trépan de forage
WO2001088321A1 (fr) Foret a pierre
EP3150347B1 (fr) Foret
EP1083295B1 (fr) Outil de forage
EP2845672B1 (fr) Foret
EP1431511B1 (fr) Foret à roche
EP1985794B1 (fr) Plaque en métal dur pour foret à pierre et foret à pierre
DE10351183A1 (de) Gesteinsbohrer
DE4033877B4 (de) Bohrwerkzeug
EP2747923A1 (fr) Couronne de sondage, en particulier couronne de sondage en béton armé

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20171002

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20180712

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1080771

Country of ref document: AT

Kind code of ref document: T

Effective date: 20190115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502016002968

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190326

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190326

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190327

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190426

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20190426

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502016002968

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20190927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190929

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190929

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190930

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190930

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20160929

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181226

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20230926

Year of fee payment: 8

Ref country code: GB

Payment date: 20230918

Year of fee payment: 8

Ref country code: AT

Payment date: 20230919

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230926

Year of fee payment: 8

Ref country code: DE

Payment date: 20230731

Year of fee payment: 8