EP0653544B1 - Spiralbohrer - Google Patents

Spiralbohrer Download PDF

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Publication number
EP0653544B1
EP0653544B1 EP94810518A EP94810518A EP0653544B1 EP 0653544 B1 EP0653544 B1 EP 0653544B1 EP 94810518 A EP94810518 A EP 94810518A EP 94810518 A EP94810518 A EP 94810518A EP 0653544 B1 EP0653544 B1 EP 0653544B1
Authority
EP
European Patent Office
Prior art keywords
grooves
shank
rock drill
width
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.)
Expired - Lifetime
Application number
EP94810518A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0653544A3 (de
EP0653544A2 (de
Inventor
Axel Neukirchen
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 EP0653544A2 publication Critical patent/EP0653544A2/de
Publication of EP0653544A3 publication Critical patent/EP0653544A3/de
Application granted granted Critical
Publication of EP0653544B1 publication Critical patent/EP0653544B1/de
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
    • E21B10/44—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
    • 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
    • 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
    • Y10T408/909—Having peripherally spaced cutting edges
    • Y10T408/9095—Having peripherally spaced cutting edges with axially extending relief channel
    • Y10T408/9097—Spiral channel

Definitions

  • the invention relates to a rock drill with a drill head, a shank and one the insertion end opposite the drill head, the shank at least one has a helical conveyor spiral and the one forming the outer diameter Back of the conveyor spiral is interspersed with grooves.
  • the spiral-shaped conveying coils on the shank of well-known rock drills guide Drilled material removed during the drilling process - analogous to a screw conveyor from the Deepest out of the borehole.
  • These rock drills are being made in ever smaller, operated from the impact energy more powerful drilling rigs.
  • the need for Turning power, which results among other things from the friction between the back of the conveyor helix and the borehole wall has remained essentially constant since one Reduction of the total back width of the conveyor spiral adversely affects the Guidance of the rock drill would impact underground.
  • a rock drill is known, the shaft of which is a spiral conveyor has, whose back circumferentially spaced grooves has, which are inclined to the longitudinal axis of the drill.
  • This well-known rock drill is a reduction in the broadest sense with the Interacting back surface of the borehole wall can be removed.
  • a performance gain which is achieved due to less back friction due to the borehole wall a smaller back surface, is destroyed again by the above Parts of the groove-like profile on the partly rough surface of the borehole wall hang in and thus overall the friction of the rock drill increase this type.
  • the invention has for its object to provide a rock drill whose Conveyor helix good guidance of the rock drill in a borehole during the Machining process guaranteed and at the same time less friction on the Borehole wall generated.
  • the width of the back is for manufacturing and economic reasons the conveying helix is constant over the entire length of the conveying helix.
  • the grooves arranged on the back of this conveyor helix are preferably arranged such that the grooves one behind the other at equal intervals along the central axis of the shaft are arranged.
  • a rock drill with a larger diameter has a larger circumference and therefore also conveyor coils with a larger back surface.
  • the width of the grooves is therefore also dependent on the outside diameter of the Shaft.
  • the ratio between the width of the groove and the diameter of the shank is expediently 0.05: 1 to 0.3: 1.
  • the grooves are only called out in this way formed that the bottom of the groove in the radial direction with respect to the back of the conveyor spiral is slightly set back.
  • the depth of the groove must definitely be this be trained so that the majority of the particles of the drilling material are larger than the depth the groove. Since the particle size of the drilling material depends on the diameter of the rock drill, the depth of the groove is in a certain ratio to the outer diameter of the shaft, this ratio preferably 0.02: 1 to Is 0.05: 1.
  • the width of the groove can be related to the width of the back of the conveyor helix can be designed differently.
  • the grooves on the back of the conveyor helix are wider so that less back surface the production helix can come into contact with the borehole wall.
  • the editing hard materials require grooves with a smaller width. This is expediently Ratio between the width of the grooves and the width of the back of the conveyor spiral 0.8: 1 to 6: 1.
  • the rock drill shown in FIGS. 1 and 2 has a drill head 1, one Shank 2 and an insertion end 3 opposite the drill head 1.
  • the shank 2 has, for example, two helical conveying coils 4, 5, the Backs 6, 7 forming the outside diameter of the conveying spirals 4, 5 of grooves 8, 9 are enforced.
  • the grooves 8, 9 run in planes that are perpendicular to the longitudinal axis extend the rock drill and are axially offset from each other.
  • the face Area of the drill head 2 is a soldered hard metal plate 10, the The outer contour slightly exceeds the outer diameter of the shaft 2.
  • Fig. 2 shows an enlarged view of the on the back 6, 7 of the conveyor spiral 4, 5 arranged grooves 8, 9.
  • the grooves 8, 9 are at equal intervals A along the Center axis of the shaft 2 arranged one behind the other.
  • the width B of the grooves 8, 9 is depending on the width R of the back 6, 7 of the conveyor helix 4, 5.
  • the depth T of the Grooves 8, 9 depend on the outer diameter D of the shaft 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP94810518A 1993-11-11 1994-09-07 Spiralbohrer Expired - Lifetime EP0653544B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4338490A DE4338490A1 (de) 1993-11-11 1993-11-11 Spiralbohrer
DE4338490 1993-11-11

Publications (3)

Publication Number Publication Date
EP0653544A2 EP0653544A2 (de) 1995-05-17
EP0653544A3 EP0653544A3 (de) 1995-11-02
EP0653544B1 true EP0653544B1 (de) 1998-06-17

Family

ID=6502330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94810518A Expired - Lifetime EP0653544B1 (de) 1993-11-11 1994-09-07 Spiralbohrer

Country Status (6)

Country Link
US (1) US5503237A (ja)
EP (1) EP0653544B1 (ja)
JP (1) JPH07180464A (ja)
CN (1) CN1038702C (ja)
DE (2) DE4338490A1 (ja)
DK (1) DK0653544T3 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1138871A1 (de) 2000-03-27 2001-10-04 HILTI Aktiengesellschaft Wendelbohrer
DE10053343B4 (de) * 2000-10-27 2009-04-16 Hilti Aktiengesellschaft Wendelbohrer
DE102009038516A1 (de) * 2009-08-25 2011-03-03 Illinois Tool Works Inc., Glenview Gesteinsbohrer

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19648868A1 (de) * 1996-11-26 1998-05-28 Hilti Ag Bohrwerkzeug mit hohlzylinderförmigem Trägerkörper
DE19753731A1 (de) * 1997-12-04 1999-06-10 Hawera Probst Gmbh Gesteinsbohrwerkzeug
DE10142560A1 (de) * 2001-08-30 2003-03-20 Hilti Ag Bohrkopf mit einem Schneidelement
DE102008022945A1 (de) * 2008-05-09 2009-12-03 Irwin Industrial Tools Gmbh Bohrwerkzeug, insbesondere Spiralbohrer
EP2116321B1 (de) * 2008-05-09 2014-01-08 Irwin Industrial Tool Company Bohrwerkzeug, insbesondere Spiralbohrer
DE102009033942A1 (de) * 2009-07-14 2011-01-20 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG Bohrer
DE102010019379A1 (de) * 2010-05-04 2011-11-10 Illinois Tool Works Inc. Bohrer, Vorrichtung zur Herstellung und Herstellungsverfahren für einen Bohrer
DE102012112781A1 (de) 2012-12-20 2014-06-26 Walter Ag Spiralbohrer
US11007583B2 (en) 2016-02-14 2021-05-18 Hongjia Wang Twist drill
US11141799B2 (en) * 2017-06-13 2021-10-12 Sumitomo Electric Hardmetal Corp. Drill

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1307525A (en) * 1919-06-24 Ice-cutting tool
BE493510A (ja) *
US1740761A (en) * 1926-06-21 1929-12-24 Berry Francois Jacq Barthelemy Machine for rock or coal cutting
US1955768A (en) * 1932-12-17 1934-04-24 William E Mcdermott Coal auger bit
DE803291C (de) * 1949-01-26 1951-04-02 Victor Products Ltd Kohle- und Gesteins-Drehbohrer mit Schneckengang
US3147646A (en) * 1961-10-19 1964-09-08 Universal American Corp Special purpose drill
DE2013327B1 (de) * 1970-03-20 1971-05-13 Werkzeugbau Gmbh, 8130 Starnberg Gesteinsbohrer fur Drehschlagbohr maschinen
US3667857A (en) * 1970-10-30 1972-06-06 Nat Twist Drill & Tool Co Combined drill and reamer construction
CH581520A5 (en) * 1974-04-08 1976-11-15 Lilette Finanz & Immobilien Fluted cutting tool with threaded periphery - has stronger incomplete thread at leading edge
US4285618A (en) * 1979-10-12 1981-08-25 Shanley Stephen E Jr Rotary milling cutter
JPS63283809A (ja) * 1987-05-12 1988-11-21 G N Tool Kk ニック付ドリルリ−マ
DE3919095A1 (de) * 1988-07-16 1990-01-18 Hawera Probst Kg Hartmetall Bohrwerkzeug
US4953642A (en) * 1989-03-20 1990-09-04 Skaggs Roger D Rock drill bit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1138871A1 (de) 2000-03-27 2001-10-04 HILTI Aktiengesellschaft Wendelbohrer
DE10053343B4 (de) * 2000-10-27 2009-04-16 Hilti Aktiengesellschaft Wendelbohrer
DE102009038516A1 (de) * 2009-08-25 2011-03-03 Illinois Tool Works Inc., Glenview Gesteinsbohrer

Also Published As

Publication number Publication date
EP0653544A3 (de) 1995-11-02
DE59406265D1 (de) 1998-07-23
US5503237A (en) 1996-04-02
DK0653544T3 (da) 1999-04-06
EP0653544A2 (de) 1995-05-17
JPH07180464A (ja) 1995-07-18
CN1107928A (zh) 1995-09-06
DE4338490A1 (de) 1995-05-18
CN1038702C (zh) 1998-06-10

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