EP1122013B1 - Trépan de forage - Google Patents

Trépan de forage Download PDF

Info

Publication number
EP1122013B1
EP1122013B1 EP01810090A EP01810090A EP1122013B1 EP 1122013 B1 EP1122013 B1 EP 1122013B1 EP 01810090 A EP01810090 A EP 01810090A EP 01810090 A EP01810090 A EP 01810090A EP 1122013 B1 EP1122013 B1 EP 1122013B1
Authority
EP
European Patent Office
Prior art keywords
drilling
core
core sleeve
bit according
cylinder
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
EP01810090A
Other languages
German (de)
English (en)
Other versions
EP1122013A1 (fr
Inventor
Rolf Spangenberg
Diep Chau-Ngoc
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP1122013A1 publication Critical patent/EP1122013A1/fr
Application granted granted Critical
Publication of EP1122013B1 publication Critical patent/EP1122013B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles

Definitions

  • the invention relates to a drill bit for the production of circular cylindrical recesses or breakthroughs with a drilling cylinder at its end on the direction of drilling Has cutting elements that are at least in the axial projection of the interior of the Extend drilling cylinder.
  • drill bits of the type mentioned at the beginning are used.
  • Drill cylinder of the drill bit are standing, which then broken out with a suitable tool must become.
  • a drill bit of the type described is disclosed, for example, in EP 0776721 A1 It has a drilling cylinder with an axially extending drill in its interior. Cutting elements are arranged on the end face of a longitudinal end of the drilling cylinder, the cutting elements partially radially into the axial projection of the interior extend the drilling cylinder. Because the cutting elements are designed in this way are, the core remaining in the drilling cylinder has a smaller diameter than that Inner diameter of the drilling cylinder. This will jam the core in the drilling cylinder largely prevented. In addition, the drill arranged in the drilling cylinder prevents Tilting the core.
  • the present invention has for its object to provide a drill bit which the core can be easily removed from the drilling cylinder. In addition, it should have simple and economical construction.
  • the object is achieved in that the drilling cylinder has one on the drilling direction side End opposite end open interior with at least one has constant inner contour and a detachable in the interior of the drilling cylinder Core sleeve is arranged, the wall thickness of which is at most the radial extent corresponds to the axial projection of the interior extending part of the cutting element.
  • the core sleeve is detachably arranged in the drilling cylinder, it is after the drilling process possible without problems, the core sleeve together with the core contained in it To remove the drill bit.
  • the drilling cylinder having an opposite end to the drilling direction End open interior with an at least constant inner contour has, the core sleeve can be pulled out of the drilling cylinder against the drilling direction become.
  • An at least constant inner contour is to be understood as that the inside diameter is not decreasing towards the open end, but the same or is increasingly designed so that the removal of the core sleeve from the drilling cylinder the drilling direction is possible.
  • it In order to accommodate the core in the core sleeve, it must have a diameter that is not larger than that of the core sleeve.
  • the wall thickness of the core sleeve is at most the radial extent of the axial Projection of the interior part of the cutting element corresponds, this is guaranteed. Should the core - no longer in exceptional cases, however - no longer be removable from the core sleeve, so is the economic loss due to the lost Core sleeve much less than the loss of the entire drill bit.
  • the core sleeve expediently has at least one, at least partially the length of the longitudinal slot. This is the one removed from the drilling cylinder Core sleeve easier to remove from the core that has stopped and jamming the core in the core sleeve is no longer possible.
  • the longitudinal slot is open towards the end in the direction of the drilling, so that the core can be optimally removed from the core sleeve.
  • the core remains, for example for an analysis of the underground, completely preserved in its structure.
  • Adequate stability of the core sleeve is preferably achieved in that the Outside diameter of the core sleeve is designed such that it on the inner wall of the Drilling cylinder is completely in contact and is smaller in the inserted state than in the not inserted Status. This simultaneously guides the core sleeve in the drilling cylinder and so that a trouble-free extraction of the core sleeve from this enables. It also says the core sleeve inserted into the drilling cylinder under a prestress, which leads to a frictional connection leads between the drilling cylinder and the core sleeve. This will make an undesirable Moving the core sleeve relative to the drilling cylinder, especially during the drilling process avoided.
  • a holding part is arranged to make it easy for the user to pull it out from under one To allow pre-tensioning core sleeve from the drilling cylinder.
  • the Core sleeve advantageously at its end on the direction of drilling in the direction of drilling tapered outer diameter range.
  • the introduced Core sleeve has a pre-tension, is a safe guide when inserting into the drilling cylinder particularly important and makes handling the drill bit easier.
  • the core sleeve has a wall thickness that corresponds to 0.01 to 0.3 times the wall thickness of the drilling cylinder, the production of the drill bit is economical. In addition, such dimensioning of the core sleeve has a positive effect on the manageability of the drill bit.
  • the longitudinal slot preferably has a width which corresponds to 0.001 to 0.01 times the outer diameter of the core sleeve, the core sleeve can be inserted into the drilling cylinder without problems. Since the core sleeve is under a prestress in the inserted state, at least the width of the longitudinal slot must correspond approximately to the difference in the circumference of the core sleeve in the inserted and relaxed state.
  • the core sleeve is expediently made of spring steel in order to optimally hold the Ensure core sleeve in the drilling cylinder.
  • the use of spring steel achieved the necessary stability of the core sleeve.
  • the high elastic limit of spring steel means easier removal when removing the core from the core sleeve and a longer operational readiness.
  • the drawing shows the drill bit according to the invention, the one Has drilling cylinder 1 and a core sleeve 2 running axially in drilling cylinder 1.
  • the drilling cylinder 1 also has cutting elements 3 at the end on the drilling direction, which are radial extend into the axial projection of the interior of the drilling cylinder 1.
  • One on the opposite End of the drill bit arranged cylindrical adapter 7 is by, for example Welding, soldering or gluing connected to the partially enclosed drilling cylinder 1.
  • the adapter 7 is used to connect to a handheld power tool, not shown in the drawing.
  • the torque is determined by several on the outer circumference of the adapter 7 arranged rotary driving 8 from the handheld power tool, not shown in the drawing transferred to the drill bit.
  • the Adapter 7 in the end region on the drilling direction has a stop shoulder designed as a flange 9 on.
  • a longitudinal slot 4 runs from the end on the direction of the drilling over one Most of the length of the core sleeve 2.
  • the core sleeve 2 has an annular holding part 5 and one at the opposite end tapering in the drilling direction outer diameter region 6, which is an insertion bevel forms on.

Landscapes

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

Claims (9)

  1. Foret tubulaire pour la réalisation d'évidements ou de percements cylindro-circulaires, comprenant un cylindre de forage (1) qui comporte, à son extrémité côté direction de forage, des éléments coupants (3) qui s'étendent au moins dans la projection axiale de la chambre intérieure du cylindre de forage (1), caractérisé en ce que le cylindre de forage (1) comporte une chambre intérieure ouverte en direction de l'extrémité opposée à l'extrémité côté direction de forage, avec un contour intérieur au moins constant et, dans la chambre intérieure du cylindre de forage (1), un fourreau à carotte amovible (2) dont l'épaisseur de paroi (a) correspond au plus à l'extension radiale de la partie (b) de l'élément coupant (3) qui s'étend dans la projection axiale de la chambre intérieure.
  2. Foret tubulaire selon la revendication 1, caractérisé en ce que le fourreau à carotte (2) comprend au moins une fente longitudinale (4) s'étendant au moins partiellement sur sa longueur.
  3. Foret tubulaire selon la revendication 2, caractérisé en ce que la fente longitudinale (4) est ouverte en direction de l'extrémité côté direction de forage.
  4. Foret tubulaire selon une des revendications 1 à 3, caractérisé en ce que le diamètre extérieur du fourreau à carotte (2) est calculé pour que celui-ci soit entièrement appliqué contre la paroi intérieure du cylindre de forage (1) et présente, une fois inséré dans ce dernier, un diamètre plus petit qu'à l'état non inséré.
  5. Foret tubulaire selon une des revendications 1 à 4, caractérisé en ce que le fourreau à carotte (2) comporte, à son extrémité située à l'opposé de l'extrémité côté direction de forage, une partie de préhension (5).
  6. Foret tubulaire selon une des revendications 1 à 5, caractérisé en ce que le fourreau à carotte (2) présente, à son extrémité côté direction de forage, une zone de diamètre extérieur (6) qui se rétrécit dans la direction de forage.
  7. Foret tubulaire selon une des revendications 1 à 6, caractérisé en ce que le fourreau à carotte (2) présente une épaisseur de paroi qui correspond à 0,01 à 0,3 fois l'épaisseur de paroi du cylindre de forage (1).
  8. Foret tubulaire selon une des revendications 2 à 7, caractérisé en ce que la fente longitudinale (4) présente une largeur qui correspond à 0,001 à 0,01 fois le diamètre extérieur du fourreau à carotte (2).
  9. Foret tubulaire selon une des revendications 1 à 8, caractérisé en ce que le fourreau à carotte (2) est réalisé en acier à ressorts.
EP01810090A 2000-02-07 2001-01-30 Trépan de forage Expired - Lifetime EP1122013B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10005365 2000-02-07
DE10005365A DE10005365A1 (de) 2000-02-07 2000-02-07 Bohrkrone

Publications (2)

Publication Number Publication Date
EP1122013A1 EP1122013A1 (fr) 2001-08-08
EP1122013B1 true EP1122013B1 (fr) 2003-05-02

Family

ID=7630115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01810090A Expired - Lifetime EP1122013B1 (fr) 2000-02-07 2001-01-30 Trépan de forage

Country Status (5)

Country Link
US (1) US6382202B2 (fr)
EP (1) EP1122013B1 (fr)
AT (1) ATE238869T1 (fr)
DE (2) DE10005365A1 (fr)
DK (1) DK1122013T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4363019B2 (ja) * 2002-09-20 2009-11-11 マックス株式会社 コアビット
US7204244B1 (en) 2006-03-02 2007-04-17 Luminare Supply Corporation Diamond core drill bit
CN110291052A (zh) * 2016-12-02 2019-09-27 圣戈班磨料磨具股份有限公司 取芯钻头组件

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923180A (en) * 1956-12-14 1960-02-02 Newport News S & D Co Insulation cutting tool
US3778179A (en) * 1972-09-06 1973-12-11 D Rivas Dual replaceable holesaw bit
US3978733A (en) * 1974-03-08 1976-09-07 F. A. P. M. O. Sampler for extracting core samples
US4131384A (en) * 1977-09-08 1978-12-26 Hougen Everett D Arbor for annular hole cutter
US4193721A (en) * 1978-11-22 1980-03-18 Hougen Everett D Arbor for annular hole cutter
US4696308A (en) * 1986-04-09 1987-09-29 The Cleveland Clinic Foundation Core sampling apparatus
US4785826A (en) * 1987-03-02 1988-11-22 Ward John L Biopsy instrument
DE4031755A1 (de) * 1990-10-06 1992-04-09 Bosch Gmbh Robert Hohlbohrwerkzeug
US5316416A (en) * 1992-09-29 1994-05-31 Ehwa Diamond Ind. Co., Ltd. Diamond cutting tool for hard articles
US5813802A (en) * 1995-11-30 1998-09-29 House B.M. Co., Ltd. Drilling tool assembly and its center drill and cup shape drill

Also Published As

Publication number Publication date
DE50100195D1 (de) 2003-06-05
ATE238869T1 (de) 2003-05-15
DE10005365A1 (de) 2001-08-09
US6382202B2 (en) 2002-05-07
EP1122013A1 (fr) 2001-08-08
US20010025638A1 (en) 2001-10-04
DK1122013T3 (da) 2003-08-25

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