EP0739673B1 - Tube pour couronne - Google Patents

Tube pour couronne Download PDF

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Publication number
EP0739673B1
EP0739673B1 EP96105303A EP96105303A EP0739673B1 EP 0739673 B1 EP0739673 B1 EP 0739673B1 EP 96105303 A EP96105303 A EP 96105303A EP 96105303 A EP96105303 A EP 96105303A EP 0739673 B1 EP0739673 B1 EP 0739673B1
Authority
EP
European Patent Office
Prior art keywords
drill bit
stem
drill
tube
stem 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
EP96105303A
Other languages
German (de)
English (en)
Other versions
EP0739673A1 (fr
Inventor
Wolfgang Peetz
Hans-Peter Dr. Meyen
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.)
Robert Bosch Power Tools GmbH
Original Assignee
Hawera Probst Hartmetall Werk Zeugfabrik Ravensburgh KG
Hawera Probst 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
Priority claimed from DE19602903A external-priority patent/DE19602903A1/de
Application filed by Hawera Probst Hartmetall Werk Zeugfabrik Ravensburgh KG, Hawera Probst GmbH filed Critical Hawera Probst Hartmetall Werk Zeugfabrik Ravensburgh KG
Publication of EP0739673A1 publication Critical patent/EP0739673A1/fr
Application granted granted Critical
Publication of EP0739673B1 publication Critical patent/EP0739673B1/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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/025—Details of saw blade body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D65/00—Making tools for sawing machines or sawing devices for use in cutting any kind of material
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S408/00—Cutting by use of rotating axially moving tool
    • Y10S408/703—Trepanning
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/895—Having axial, core-receiving central portion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/895—Having axial, core-receiving central portion
    • Y10T408/8957—Having axial, core-receiving central portion and having stepped cutting edges

Definitions

  • the invention relates to a drill bit tube according to the Preamble of claim 1 (see e.g. DE 42 42 910).
  • Tubes for core bits are generally drawn from soft mild steel Precision tubes manufactured. These pipes are usually painted, in some cases also chromated. You assign one uniformly round cross-section from the drill bit to Lid area. For small drill bits, typically at Pipe diameters that are less than 40 mm are sometimes Thickening with milled grooves at the cutting end appropriate. These thickenings are necessary for the Drill segments with sufficient strength are attached can. The grooves in the thickened areas are used for absorption of the resulting drilling dust during drilling.
  • drill bits for dry drilling become the side facing holes have, which serve the after drilling within the Remove the core from the core bit.
  • longitudinal slots up to the lid are sometimes provided. In these Longitudinal slots are again used for drilling dust during drilling. They also serve just like the round holes mentioned to remove the core from the drill bit.
  • These longitudinal slots were only so-called for the dimension Can countersink (maximum drilling depth 70 mm) practicable.
  • Tubes are also used to improve drilling dust transport become known on the outer circumference with a helix low slope is attached, which is usually turned becomes.
  • the material thickness must be increased for such spirals to ensure adequate pipe rigidity guarantee. This results in a larger one Cutting width, for which consequently a higher drive power when drilling is required.
  • the object of the invention is therefore a tube for a To propose a drill bit in which the friction during the Drilling reduces and at the same time the axial rigidity is improved, the drill bit at the same time with little Effort, in particular can be produced by shaping processes is.
  • a drill bit tube according to the invention instructs at least one surface on a structure that the tube without additional material reinforcement in the axial direction stiffened.
  • a structure shows in its course a large axis-parallel component to just this To cause stiffening in the axial direction.
  • the lateral surface is not a closed one Cylinder surface more in contact with the wall of the Borehole or the drill core. This will in addition to improved rigidity of the drill bit tube reduced friction during drilling.
  • the advantages according to the invention are achieved solely by Shape and not through additional material reinforcements reached.
  • the wall thickness of the drill bit tube remains through the Structures essentially unchanged.
  • Such structures can with relatively little through shaping processes Effort, for example, from flat material or from smooth Cylinder tubes are manufactured.
  • the lateral surface structure is preferably in the form of Embossments or indentations in the outer surface appropriate.
  • impressions or indentations
  • Such impressions can via a so-called roll rolling embossing in the tube sheet be embossed before the sheet is formed into the drill bit tube and is longitudinally welded.
  • roll rolling embossing in the tube sheet be embossed before the sheet is formed into the drill bit tube and is longitudinally welded.
  • Embossed in continuously drawn cylindrical tubes can be used to be embossed before the sheet is formed into the drill bit tube and is longitudinally welded.
  • the embossments can be groove-shaped over the entire length of the pipe and / or as self-contained impressions be made. Grooved impressions can be used here a straight course parallel to the axis or one take a curved or angular course. The in itself closed impressions can be circular or elliptical and be polygonal.
  • the structure of the inner and / or outer surface of the drill bit tube can be achieved in that the entire cross-sectional profile of the tube is designed differently from the cylindrical shape.
  • a profile tube can consist of several, for example four arcuate segments are assembled.
  • polygonal tube cross sections e.g. B. in the form of regular polygons.
  • Cross sections are also available to consider where the tube wall is wavy is arranged around a circular line.
  • cross-sectional profiles mentioned can be on different Because of being won. For example, you can by Joining individual pipe segments, by forming or Kinking of a finished pipe, e.g. B. circular Cross-section, or directly during the manufacture of the tube, e.g. B. be created by extrusion.
  • this version is a targeted Drilling dust extraction in the by twisting the embossing or cross-sectional formation caused channels.
  • Drill bit in particular a pipe of the type mentioned above can consist of the fact that instead of arcuate and comparatively long drilling segments on End of the drill bit is now shorter and straight Drill segments can be used.
  • the segments are, for example, with a profile tube polygonal or with a wavy cross section on the Maximum or minimum deflections of the resulting Arranged circumferential lines. This results in a Division of cuts between different drilling segments. Becomes the sequence between maximum or Minimum rashes chosen appropriately short, so can straight, short drill segments of this type are used without any problems that are typically only 10 - 15 mm long a length of 20 mm - 30 mm with a standard drill bit design exhibit.
  • the main advantage when using short and straight drilling segments is that same segments Can be used for drill bit tubes of various diameters are. Due to the larger number of identical components a significant cost advantage. This advantage also results from drill bit tubes of the previously known Art.
  • the drill bit tube 1 according to FIGS. 1 and 2 has one inner 2 and an outer 3 outer surface.
  • the pipe material is shaped so that diamond-shaped bulges 4 over the entire outer surface 3 are distributed.
  • Each diamond-shaped bulge 4 is of a corresponding diamond-shaped recess 5 framed.
  • the surface 2 results in the complementary picture, i.e. diamond-shaped indentations 4 'by corresponding diamond-shaped elevations 5 'are framed, so that the Material thickness remains essentially the same everywhere.
  • the diamond-shaped depressions 5 continuous intersecting channels, as exemplified by dashed lines 6, 7 shown.
  • This continuous Channels 6, 7 run parallel to the side walls of the diamond-shaped indentations 4 helical with a large one Incline around the outer circumference of the drill bit tube 1.
  • the pitch angle is ⁇ for example 45 °.
  • the diamond-shaped bulges 4 are with their one diagonal parallel to the axis 8 of the Drill bit tube 1 aligned.
  • drill segments 20 are attached which are shaped like a segment of a circle.
  • the inner one Shell surface 2 is correspondingly complementary to the outer Shell surface 3 formed.
  • the representation of the flat development 1 'of Drill bit tube 1 shows how such a tube 1 Flat material can be manufactured. Through roll embossing for example, embossed in a sheet be so that this receives the profile of the settlement 1 '. The drill bit tube is then e.g. by winding up and Welding made.
  • FIG. 6 - 7 relate to an embodiment in which the Cross section deviating from the cylindrical shape according to the invention through trough-shaped grooves 11 of round cross-section is realized.
  • the circular cross section 12 of this Grooves 11 is clearly on the front side (see. Fig. 6 and 8) see.
  • the drill bit tube 1 or parts of it can be created by molding.
  • FIGS. 9-11 is similar constructed as the above-described execution. Instead of However, grooves 11 pass through here in a flat design Kink created connecting edges 17 on which four Circular segment-like wall segments 13 are joined together.
  • the course of the scope of a trained Drill bit tube has four digits of maximum diameter Area of the middle of the wall segments 13 and four positions minimum diameter in the area of the connecting edges 17 on.
  • the described embodiment of the drill bit tube 1 can also be made from a different number of wall segments 13 consist. Both three wall segments would be conceivable as well five or more.
  • the grooves 11 the edges 17 have a slight in the present example Swirl in the opposite direction to the direction of rotation Drill bit on.
  • the helix angle is angle ⁇ again kept very pointed. This in turn results in a increased wall rigidity of the drill bit tube 1, as in the previous embodiments.
  • the middle areas of the wall segments 13 form the areas which is the greatest distance from the axis of rotation of the Have drill bit tube and thus when drilling on the Rub the drilling wall.
  • These extreme elevations are moving when drilling along an outer envelope 15, which in 10 due to the existing swirl within the Drill bit tube 1 is visible as an outer contour.
  • the inner one Envelope 14 is traversed by the edges 17 during drilling. In the area of the edges 17 form between the outer Shell surface 3 and the wall of the borehole channels, through which the drilling dust can be removed.
  • FIGS. 12 to 14 there is a Embodiment of a drill bit tube according to the invention 1, in which the outer 3 and the inner 2 Shell surface by appropriate shaping of the pipe wall undulating along the circumference of a circular cylinder runs.
  • Short drilling segments 21 are at maximum 22 places or minimum distance 23 from the central axis of the Drill bit tube 1 attached.
  • Drill segments 20 of the aforementioned embodiments are the short drilling segments 21 are no longer curved, but straight.
  • the periods of the wave structure are so short trained that a sufficiently large number of short and straight drilling segments 21 each at a minimum distance 23 or maximum distance 22 can be attached to a to achieve sufficient drilling results.
  • stiffening structure in at least one of the outer surfaces of the drill bit tube 1 is molded becomes.
  • These stiffening structures can either be completely aligned in the axial direction or so be deflected in the axial direction that the stiffening Effect remains in the axial direction.

Landscapes

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

Claims (12)

  1. Tube de couronne de forage (1) ayant une surface latérale intérieure (2) et une surface latérale extérieure (3), dans lequel au moins une surface latérale (2, 3) comporte une structure (4, 5, 6, 7, 9, 10, 11, 16, 17) particulière, caractérisé en ce que la structure rigidifie le tube au moins en direction axiale sans renfort de matière, en ce que la structure est présente sous forme de bosses (9) estampées, respectivement de creux (10), dans la surface latérale (2, 3) et en ce que les bosses estampées, respectivement les creux, s'étendent sur touffe la longueur du tube.
  2. Tube de couronne de forage selon la revendication précédente, caractérisé en ce que les bosses (9) estampées, respectivement les creux (10), sont isolés les uns des autres.
  3. Tube de couronne de [orage selon l'une des revendications précédentes, caractérisé en ce que la structure comprend le profil de section complet du tube.
  4. Tube de couronne de [orage selon l'une des revendications précédentes, caractérisé en ce que le profil de section est composé de segments de paroi (13) en forme d'arcs.
  5. Tube de couronne de [orage selon l'une des revendications précédentes, caractérisé en ce que la section du tube (1) est polygonale.
  6. Tube de couronne de forage selon l'une des revendications précédentes, caractérisé en ce que la section du tube (1) présente une allure ondulée le long d'une circonférence en forme de cercle.
  7. Tube de couronne de forage selon l'une des revendications précédentes, caractérisé en ce que la structure est formée par toute la section du tube et en ce que des creux, respectivement des bosses, supplémentaires sont estampés dans au moins l'une des surfaces latérales.
  8. Tube de couronne de forage selon l'une des revendications précédentes, caractérisé en ce que la structure présente une torsion ayant un angle d'hélice aigu (11, 8).
  9. Tube de couronne de forage selon l'une des revendications précédentes, caractérisé en ce que le tube de couronne de forage comporte un revêtement réduisant les frottements.
  10. Tube de couronne de [orage selon l'une des revendications précédentes, caractérisé en ce que des segments de forage courts sont prévus.
  11. Tube de couronne de forage selon la revendication 12, caractérisé en ce que la longueur des segments de forage est comprise entre 10 mm et 15 mm.
  12. Tube de couronne de forage selon la revendication 12 ou 13, caractérisé en ce que les segments de forage (21) ne sont pas courbes.
EP96105303A 1995-04-27 1996-04-03 Tube pour couronne Expired - Lifetime EP0739673B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19515435 1995-04-27
DE19515435 1995-04-27
DE19602903 1996-01-27
DE19602903A DE19602903A1 (de) 1995-04-27 1996-01-27 Bohrkronenrohr

Publications (2)

Publication Number Publication Date
EP0739673A1 EP0739673A1 (fr) 1996-10-30
EP0739673B1 true EP0739673B1 (fr) 1998-12-23

Family

ID=26014667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96105303A Expired - Lifetime EP0739673B1 (fr) 1995-04-27 1996-04-03 Tube pour couronne

Country Status (3)

Country Link
US (1) US5676501A (fr)
EP (1) EP0739673B1 (fr)
JP (1) JPH08303171A (fr)

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US9884374B2 (en) 2015-09-03 2018-02-06 Irwin Industrial Tool Company Hole cutter with multiple fulcrums
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JP6148499B2 (ja) * 2013-03-01 2017-06-14 五洋建設株式会社 鋼管矢板圧入装置
CN103660044B (zh) * 2013-12-03 2015-11-18 常州深倍超硬材料有限公司 具有冷却结构的组合刀具
CN105437391A (zh) * 2014-08-27 2016-03-30 兆远科技股份有限公司 钻取装置及高硬度材质的曲面基板的制造方法
EP3184216A1 (fr) * 2015-12-22 2017-06-28 HILTI Aktiengesellschaft Couronne de forage comprenant une tige de forage ondulée
KR101692224B1 (ko) * 2016-09-13 2017-01-03 황광모 수동 굴착기기
EP3338925A1 (fr) * 2016-12-23 2018-06-27 HILTI Aktiengesellschaft Couronne de forage comprenant une tige de forage en forme de tube spiralé et procédé de production d'une tige de forage en forme de tube spiralé pour une couronne de forage
EP3338923A1 (fr) * 2016-12-23 2018-06-27 HILTI Aktiengesellschaft Couronne de forage comprenant une tige de forage en forme de tube spiralé et procédé de production d'une tige de forage en forme de tube spiralé pour une couronne de forage
EP3338934A1 (fr) * 2016-12-23 2018-06-27 HILTI Aktiengesellschaft Procédé de production d'une tige de forage pour une couronne de forage humide
USD845362S1 (en) 2017-12-04 2019-04-09 Black & Decker Inc. Holesaw
EP3501706A1 (fr) * 2017-12-21 2019-06-26 HILTI Aktiengesellschaft Procédé de fabrication d'une section de coupe pour une couronne de forage
EP3501703A1 (fr) * 2017-12-21 2019-06-26 HILTI Aktiengesellschaft Procédé de fabrication d'une section de coupe pour une couronne de forage
EP3501709A1 (fr) * 2017-12-21 2019-06-26 HILTI Aktiengesellschaft Section de coupe pour une couronne de forage
EP3501712A1 (fr) * 2017-12-21 2019-06-26 HILTI Aktiengesellschaft Procédé de fabrication d'une section de coupe pour une couronne de forage
DE202019101214U1 (de) * 2019-03-04 2019-09-05 C. & E. Fein Gmbh Werkzeugeinrichtung für eine Werkzeugmaschine

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Also Published As

Publication number Publication date
US5676501A (en) 1997-10-14
EP0739673A1 (fr) 1996-10-30
JPH08303171A (ja) 1996-11-19

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