EP1188897B1 - Trépan de forage de roche - Google Patents

Trépan de forage de roche Download PDF

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Publication number
EP1188897B1
EP1188897B1 EP20010119136 EP01119136A EP1188897B1 EP 1188897 B1 EP1188897 B1 EP 1188897B1 EP 20010119136 EP20010119136 EP 20010119136 EP 01119136 A EP01119136 A EP 01119136A EP 1188897 B1 EP1188897 B1 EP 1188897B1
Authority
EP
European Patent Office
Prior art keywords
drilling
bodies
drilling bodies
rock drill
drill according
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
Application number
EP20010119136
Other languages
German (de)
English (en)
Other versions
EP1188897A1 (fr
Inventor
Steffen Menger
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 EP1188897A1 publication Critical patent/EP1188897A1/fr
Application granted granted Critical
Publication of EP1188897B1 publication Critical patent/EP1188897B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts

Definitions

  • the invention relates to a rock drill, according to the preamble of claim 1.
  • rock drills Numerous other rock drills have been proposed to ensure that rock drills produce the desired wells at the exact location desired. For smooth concrete or granite surfaces, drilling at the desired location is often difficult. If the drill passed by the hammer drill or percussion drill is not placed exactly at 90 ° to the surface of the rock, the drill bit will tend to bleed.
  • the invention has for its object to provide a rock drill according to the preamble of claim 1, which allows the formation of straight boreholes, and even with brittle rock such as bricks, the tendency to flake surface areas around the borehole should be low, but still a satisfying Propulsion is guaranteed.
  • the rock drill according to the invention has a centering tip which extends up to the area of the second drill body set.
  • the drill bodies of the set of second drill bodies strike over a ring which, viewed in the axial projection, is partially overlapped by the circle swept over by the centering tip.
  • the degree of overlapping can be, for example, 10% of the area here.
  • the centering tip is also considered as a first drill body and the circle swept by it for the sake of simplicity also as a ring.
  • the borehole areas surrounding the borehole do not break off either, with the continuous arrangement of the swept-over rings or circles obviously playing a role here, which reduces the impact load on the surface.
  • the configuration of the cutting surfaces of the drill body of the set of third drill body is designed so that it drops to the outside and thus harmoniously connects to the conical drill tip.
  • the conical configuration of the drill tip ensures that the resulting drill dust is directed outwards to the Bohrmehlabschreibnuten and can be transported well through the adjoining drill spiral.
  • the drill according to the invention is therefore also particularly well suited for the realization of wall anchors. Since the areas surrounding the borehole do not flake off in the case of bricks, re-plastering is dispensable, which offers great advantages in practice.
  • a further, particularly favorable for the production point of view is based on the fact that even with different diameters with the same drill bodies, including the hard metal plate, can be worked.
  • the groove receiving the drill bodies of the third drill bit set is simply further displaced outward at increased diameter, so that the amount of overlap between the ring spanned by the second drill bodies and the ring bored by the third drill bodies becomes smaller.
  • With the same drill body can thus also drill with the diameter range 100% to 150% realized.
  • the storage for any replacement drill body for larger diameter drills which are therefore more expensive to ensure low cost.
  • the harmonic well production is simulated despite the implementation of secondary cutting plates as a separate drill body, as it consists of two or more cutters, in which the main cutting plate extends over the entire drill diameter and the cutting edge slopes outwardly obliquely and thus follows the conical drill tip.
  • This solution produces the straightest holes, and the drilling dust is guaranteed in a proven way.
  • the drill bodies of the set of second and third drill bodies, but also the hard metal plate are angularly offset from one another. This ensures on the one hand, that even an overlap of the clamped rings is possible. On the other hand there is one Increased freedom in the design of the respective drill body or carbide segments, which can be adapted to the respective desired functions accordingly improved.
  • the drill bodies of the set of third drill bodies may protrude from the diameter of the drill head and set the nominal diameter of the drill accordingly. They can be designed to spring back and thus contribute little to drilling progress but can smooth the borehole wall.
  • the function of the drill bodies of the set of second drill bodies can be optimized with regard to the greatest possible progress of drilling. It is possible to make these second drill body so that they are at least from the cross-sectional area forth the largest drill body, so for example, larger than the hard metal plate of the centering. This can be exploited in a favorable manner, the fact that these drill bodies are system better anchored in the drill bit than the outbreak-prone third drill body. However, after they are less loaded, they can be made slimmer, so that the Bohrmehlabsselen can be increased accordingly.
  • the rock drill 10 shown in Fig. 1 has a centering tip 12 which carries a hard metal plate 14 in a conventional manner and leads.
  • the centering tip of the hard metal plate - as better seen in Fig. 2 can be seen - slightly surmounted, with its diameter corresponds to about half the nominal diameter of the drill.
  • drill bits 16 and 18 of a set of second drill bodies are offset from the hard metal plate 14 at an angle of 45 °. In the illustrated embodiment, they are formed as a round drill body and angular symmetrical to each other, so opposite each other, stored.
  • drill bodies 20 and 22 are provided, wherein the drill body 22 can be seen only from FIG. 2, which form a set of third drill bodies and are mounted on the outer circumference of the drill and project slightly beyond the drill head.
  • These drill bodies have an obliquely sloping cutting edge 24 and jump axially back against the drill bodies 16 and 18 anyway. They are also designed as rather smaller sub cutting plates and are radially shorter than the drill bodies 16 and 18.
  • the ring swept by the drill bodies 20 and 22 strongly overlaps the ring swept by the drill bodies 16 and 18, each viewed in axial projection or end view of the drill.
  • the third drill bodies 20 and 22 also extend at an angle of 45 ° to the hard metal plate 14.
  • Each between two adjacent drill bodies of the set of second drill bodies and the set of third drill bodies each extend Bohrmehlabbownuten 26, wherein in Fig. 1 only a Bohrmehlabbow is visible, but a total of four Bohrmehlabschreibnuten are provided.
  • Bohrmehlabbowen 26 initially extend parallel to the axis of the drill and then go into a helical Bohrmehlabschreibnut 28 which extends over the drill helix 30 and in which the generated drilling dust is safely removed in a known manner.
  • the drill bit 30 has in a conventional manner substantially the same diameter as the drill head 32, which carries the first, second and third drill body.
  • FIGS. 3 and 4 Another embodiment of a rock drill according to the invention can be seen in FIGS. 3 and 4.
  • This embodiment differs from the first embodiment by a modified embodiment of the second drill body 16, 18 and a modified configuration and arrangement of the third drill body 20, 22.
  • the second drill body 16, 18 are formed as hard metal plates and extend practically to the outer diameter of the drill ,
  • the third drill body 20 and 22 extend a little further outward and jump back axially relative to the second drill bodies 16 and 18.
  • the cutting surfaces of all drill bodies 16 to 22 extend at least partially radially, that is not sloped obliquely / rearwardly.
  • the third drill body point additionally prefers axially extending cutting edges for smoothing the borehole.
  • the arrangement of the third drill body 20 and 22 in this embodiment is selected so that the ring swept by them in axial projection, viewed at the joined by the hard metal plate 14 circle. There is a strong overlap to the ring of the second drill body, 16, 18, which also overlaps the circle of the hard metal plate 14.
  • the angular arrangement of the second and third drill body is selected so that the second drill body 16 and 18 are offset by 60 ° relative to the extension of the hard metal plate 14 and the third drill body 20 and 22 offset by 120 ° relative to this hard metal plate 14.
  • the exact arrangement is best seen in Fig. 4.
  • Bohrmehlabbraen 26 extend adjacent to the end of the hard metal plate 14.
  • no Bohrmehlabschreibnuten are provided in this embodiment between the adjacent second and third drill bodies 16 and 22 or 18 and 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Earth Drilling (AREA)

Claims (21)

  1. Fleuret à rocher avec une tête de perçage et avec une pointe de centrage (12), qui présente une plaque de métal dur (14), dont le diamètre est plus petit que la tête de perçage, où un ensemble de deuxième (16, 19) et de troisième (20, 22) corps de perçage est logé en plus du plaque de métal dur (14) à des positions radiales différentes, où les positions radiales rebondissent échelonnées par rapport à la pointe de centrage (12) et l'ensemble de troisième corps de perçage (20, 22) radialement extrême rebondit le plus loin, où les anneaux couverts par les corps de perçage vu dans une projection axiale se relient directement ensemble, caractérisé par une pointe de fleuret conique, sur laquelle une hélice de perçage (30) se joint par les rainures d'élimination de poussière de perçage (26), où l'ensemble de deuxième (16, 18) et l'ensemble de troisième corps de perçage (20, 22) sont disposés sur la pointe de fleuret conique.
  2. Fleuret à rocher selon la revendication 1, caractérisé en ce que les rainures d'élimination de poussière de perçage (26) s'élargissent parallèlement à l'axe du fleuret et s'enchaînent dans une rainure d'élimination de poussière de perçage (28) en forme d'hélice, qui s'étale sur l'hélice de perçage (30).
  3. Fleuret à rocher selon l'une des revendications 1 ou 2, caractérisé en ce que les rainures d'élimination de poussière de perçage (26) s'étendent chacune entre deux corps de perçage voisins de l'ensemble des deuxièmes corps de perçage (16, 18) et l'ensemble des troisièmes corps de perçage (20, 22).
  4. Fleuret à rocher selon l'une des revendications 1 ou 2, caractérisé en ce que deux rainures d'élimination de poussière de perçage (26) s'étendent chacune entre deux corps de perçage voisins de l'ensemble des deuxièmes corps de perçage (16, 18) et l'ensemble des troisièmes corps de perçage (20, 22), où les rainures d'élimination de poussière de perççage (26) sont disposées opposées l'une à l'autre.
  5. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que l'ensemble de troisième corps de perçage (20, 22) est placé à l'ampleur extérieure du fleuret.
  6. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que l'ensemble de troisième corps de perçage (20, 22) se projette au-delà de l'ampleur extérieure du fleuret.
  7. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que l'ensemble de troisième corps de perçage (20, 22) présente des plaques de coupe auxiliaires.
  8. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que l'ensemble de deuxièmes corps de perçage (16, 18) présente essentiellement dans l'avis de front des corps de perçage rond.
  9. Fleuret à rocher selon l'une des revendications 1 à 7, caractérisé en ce que l'ensemble de deuxièmes corps de perçage (16, 18) présente des plaques de coupe auxiliaires, qui correspondent à celles des plaques de coupe auxiliaires à l'ensemble de troisièmes corps de perçage (20, 22).
  10. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que les corps de perçage de l'ensemble des deuxièmes corps de perçage (16, 18) aux corps de perçage de l'ensemble des troisième corps de perçage (20 22) sont attachés à un angle décalé.
  11. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que la plaque de métal dur (14) présente un décalage d'angle par rapport à la disposition des deuxièmes et des troisièmes corps de perçage (16, 18, 20, 22) et aucun des deuxièmes et des troisièmes corps de perçage n'est disposé dans sa prolongation.
  12. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce qu'au moins un couple de corps de perçage de l'ensemble des deuxièmes et des troisièmes corps de perçage soit disposé à un angle de 45° par rapport à la plaque de métal dur (14).
  13. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que les corps de perçage de l'ensemble des deuxièmes corps de perçage (16, 18) et les corps de perçage de l'ensemble des troisième corps de perçage (20, 22) soient disposés chacun à un angle de 45° par rapport à la plaque de métal dur (14) de la pointe de centrage (12).
  14. Fleuret à rocher selon l'une des revendications 1 à 11, caractérisé en ce que les corps de perçage des ensembles des deuxièmes et des troisièmes corps de perçage soient disposés chacun à un angle par exemple de 30° et/ou 60° par rapport à la plaque de métal dur (14).
  15. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que la plaque de métal dur (14) présente une relation longueur-largeur d'au moins 3 à 1, de préférence d'environ 5 à 1.
  16. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que les corps de perçage de l'ensemble des deuxièmes corps de perçage (16, 18) et les corps de perçage de l'ensemble des troisièmes corps de perçage (20, 22) présentent une relation longueur-largeur de tout au plus 2 à 1, de préférence d'environ 1,5 à 1.
  17. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que les corps de perçage de l'ensemble des deuxièmes corps de perçage (16, 18) et les corps de perçage de l'ensemble des troisièmes corps de perçage (20, 22) présentent une épaisseur d'environ le double par rapport à la plaque de métal dur (14).
  18. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que les rainures d'élimination de poussière de perçage s'étendent chacune symétriquement entre un corps de perçage de l'ensemble des deuxièmes corps de perçage (16, 18) et un corps de perçage de l'ensemble des troisièmes corps de perçage (20, 22) et présentent une profondeur, qui est légèrement inférieure à l'élargissement radial de l'ensemble du troisième corps de perçage.
  19. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que les corps de perçage de l'ensemble des deuxièmes corps de perçage (16, 18) présente un bord de coupe, qui s'étend droit, ainsi pas en diagonale en pente, vers l'extérieur.
  20. Fleuret à rocher selon l'une des revendications 1 à 18, caractérisé en ce que les corps de perçage de l'ensemble des deuxièmes corps de perçage (16, 18) est configuré pointu vers l'avant.
  21. Fleuret à rocher selon l'une des revendications précédentes, caractérisé en ce que la longueur de la plaque de métal dur (14) correspond à par exemple un quart à deux tiers du diamètre du fleuret de préférence environ la moitié du diamètre du fleuret.
EP20010119136 2000-09-15 2001-08-08 Trépan de forage de roche Expired - Lifetime EP1188897B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20016012U 2000-09-15
DE20016012U DE20016012U1 (de) 2000-09-15 2000-09-15 Gesteinsbohrer

Publications (2)

Publication Number Publication Date
EP1188897A1 EP1188897A1 (fr) 2002-03-20
EP1188897B1 true EP1188897B1 (fr) 2006-06-28

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ID=7946528

Family Applications (1)

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EP20010119136 Expired - Lifetime EP1188897B1 (fr) 2000-09-15 2001-08-08 Trépan de forage de roche

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EP (1) EP1188897B1 (fr)
DE (2) DE20016012U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7861807B2 (en) 2008-12-03 2011-01-04 Black & Decker Inc. Drill bit including one piece cutting head
CN105089507A (zh) * 2015-09-01 2015-11-25 华南农业大学 一种高效破土钻头

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2129913A1 (de) * 1971-06-16 1972-12-21 Hilti Ag Gesteinsbohrer
DE2716866A1 (de) * 1977-04-16 1978-10-26 Bosch Gmbh Robert Gesteinsbohrer
DE2841679C3 (de) * 1978-09-25 1982-12-09 Karlheinz 2101 Harmstorf Guergen Gesteinsbohrkrone zum Drehschlagbohren
DE2856205A1 (de) * 1978-12-27 1980-07-10 Hilti Ag Gesteinsbohrer
DE3820695C2 (de) * 1988-06-18 1996-07-25 Hawera Probst Kg Hartmetall Gesteinsbohrer
DE4236553A1 (de) 1992-10-29 1994-05-05 Hawera Probst Kg Hartmetall Gesteinsbohrer
DE19942987A1 (de) * 1999-09-09 2001-03-15 Hilti Ag Bohrwerkzeug
DE10009732A1 (de) * 2000-03-02 2001-09-06 Hawera Probst Gmbh Gesteinsbohrer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7861807B2 (en) 2008-12-03 2011-01-04 Black & Decker Inc. Drill bit including one piece cutting head
CN105089507A (zh) * 2015-09-01 2015-11-25 华南农业大学 一种高效破土钻头
CN105089507B (zh) * 2015-09-01 2017-12-26 华南农业大学 一种高效破土钻头

Also Published As

Publication number Publication date
DE50110314D1 (de) 2006-08-10
DE20016012U1 (de) 2000-11-30
EP1188897A1 (fr) 2002-03-20

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