EP0452255A2 - Trépan de roche - Google Patents

Trépan de roche Download PDF

Info

Publication number
EP0452255A2
EP0452255A2 EP91810185A EP91810185A EP0452255A2 EP 0452255 A2 EP0452255 A2 EP 0452255A2 EP 91810185 A EP91810185 A EP 91810185A EP 91810185 A EP91810185 A EP 91810185A EP 0452255 A2 EP0452255 A2 EP 0452255A2
Authority
EP
European Patent Office
Prior art keywords
cutting
pins
rock drill
diameter
cutting pins
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.)
Granted
Application number
EP91810185A
Other languages
German (de)
English (en)
Other versions
EP0452255A3 (en
EP0452255B1 (fr
Inventor
Gerhard Rumpp
Josef Obermeier
Josef FÀ¼nfer
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 EP0452255A2 publication Critical patent/EP0452255A2/fr
Publication of EP0452255A3 publication Critical patent/EP0452255A3/de
Application granted granted Critical
Publication of EP0452255B1 publication Critical patent/EP0452255B1/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
    • E21B10/44—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
    • E21B10/56—Button-type inserts
    • 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 with a shank and a drill head, which on its end face pointing in the direction of advance has an insert that extends at least over the diameter and at least two cutting pins.
  • Rock drills are used to make holes in rock, concrete, masonry and the like, which are used to hold fasteners, pass through pipes and cables and to blow up.
  • Rock drills which represent a combination of cutting insert and cutting pins, have the advantage that the drilling material removed from the cutting insert is further reduced by the cutting pins.
  • Such rock drills are known for example from DE-OS 35 44 433.
  • the invention has for its object to provide a rock drill that ensures additional crushing of the drilling material with high mining performance and enables increased removal of the cuttings.
  • this is achieved in that the cutting pins lie on a diameter which forms an angle deviating from 90 ° with the diameter of the cutting plate.
  • the arrangement of the cutting pins according to the invention results in an enlargement of discharge grooves.
  • the cutting pins are advantageously arranged on the diameter on both sides of the cutting plate. This opens up the possibility of a symmetrical arrangement.
  • the arrangement of two cutting pins, in particular in the edge zone of the drill head, permits additional centering of the rock drill during the drilling process.
  • the cutting pins are advantageously arranged rotationally symmetrically to the longitudinal axis of the shaft. This ensures an increased smoothness of the rock drill and compliance with an exact drilling geometry.
  • the acute angle enclosed between the two diameters is advantageously between 40 ° and 70 °. Such an angle has proven particularly useful because, in the area of the complementary obtuse angle, the arrangement of sufficiently large discharge grooves on the end face is particularly favored.
  • a helix is regularly connected to the discharge grooves, which determines the direction of rotation of the rock drill.
  • the acute angle which is formed by the diameter of the cutting plate and the diameter on which the cutting pins lie is preferably arranged on the side of the cutting plate facing away from the direction of rotation.
  • the free ends of the cutting pins preferably do not lie in the rotational surface formed by the cutting edges of the cutting plate, but are set back slightly, for example 0.3 mm to 1.5 mm in the drilling direction.
  • the feed rate during the drilling process is thereby more evenly, since the cutting pins come into contact with the surface at almost the same time as the cutting plate. This means that the subsoil is dismantled more evenly.
  • the cutting pins support the drill head in the feed direction.
  • the rock drill shown in FIGS. 1 to 3 essentially consists of a shaft 1 and a drill head 2 connected to it.
  • the shaft 1 is provided with a conveying helix 9, which on the one hand serves to guide the drill in the borehole and on the other hand to remove the cuttings.
  • the drill head 2 is provided with discharge grooves 6, 10 which run in the longitudinal direction and which serve for the passage of the cuttings from the end face 3 of the drill head 2 pointing in the feed direction to the shank 1.
  • the drill head 2 is provided with a centrally arranged cutting plate 4.
  • the cutting plate 4 projects beyond the drilling head 2 both in the radial direction and in the feed direction.
  • cutting pins 5 are arranged, which lie on a diameter that includes an acute angle a with the diameter of the cutting plate 4. This acute angle a is - as shown in FIG. 3 - arranged on the side of the cutting plate 4 facing away from the direction of rotation D.
  • the section shown in Fig. 3 clearly shows the arrangement of the cutting pins 5 in an inclined direction to the longitudinal axis of the shaft.
  • the cutting pins 5 are inserted so deeply into the drilling head 2 that the free end faces of the cutting pins 5 lie below the rotational surface formed by cutting edges 7, 8 of the cutting plate 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
EP91810185A 1990-04-09 1991-03-21 Trépan de roche Expired - Lifetime EP0452255B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4011441A DE4011441A1 (de) 1990-04-09 1990-04-09 Gesteinsbohrer
DE4011441 1990-04-09

Publications (3)

Publication Number Publication Date
EP0452255A2 true EP0452255A2 (fr) 1991-10-16
EP0452255A3 EP0452255A3 (en) 1992-10-28
EP0452255B1 EP0452255B1 (fr) 1994-12-14

Family

ID=6404062

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810185A Expired - Lifetime EP0452255B1 (fr) 1990-04-09 1991-03-21 Trépan de roche

Country Status (8)

Country Link
EP (1) EP0452255B1 (fr)
JP (1) JP2880584B2 (fr)
AT (1) ATE115677T1 (fr)
AU (1) AU631054B2 (fr)
CA (1) CA2040052C (fr)
DE (2) DE4011441A1 (fr)
ES (1) ES2066407T3 (fr)
PL (1) PL165702B1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685629A3 (fr) * 1994-06-04 1996-12-18 Hilti Ag Trépan de forage de roche.
WO1997019247A1 (fr) * 1995-11-23 1997-05-29 Techmo Entwicklungs- Und Vertriebs Gmbh Couronne de fleuret
DE19734094A1 (de) * 1996-11-11 1998-05-14 Hawera Probst Gmbh Gesteinsbohrer
EP0778390A3 (fr) * 1995-12-07 1998-07-01 HILTI Aktiengesellschaft Perceuse rotative hélicoidale à percussion
EP0943779A2 (fr) 1998-03-18 1999-09-22 Plica Werkzeugfabrik Ag Outil de forage à percussion
EP0943780A3 (fr) * 1998-03-18 2000-07-19 Plica Werkzeugfabrik Ag Outil de forage
DE19944406A1 (de) * 1999-09-16 2001-05-03 Heller Dinklage Gmbh Geb Bohrer, insbesondere Gesteinsbohrer
GB2356164A (en) * 1999-09-16 2001-05-16 Heller Dinklage Gmbh Geb A drill, particularly a rock drill.
EP1340604A2 (fr) * 2002-02-28 2003-09-03 Hawera Probst GmbH Foret
US7258180B2 (en) 2003-11-03 2007-08-21 Illinois Tool Works Inc. Rotary hammerdrill bit

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6260637B1 (en) 1996-11-11 2001-07-17 Hawera Probst Gmbh Rock drill
DE19703994B4 (de) * 1997-02-03 2006-04-20 Drebo Werkzeugfabrik Gmbh Bohrer
DE29901296U1 (de) 1999-01-26 1999-06-10 Plica Werkzeugfabrik Ag, Mollis Bohrwerkzeug
DE10024433A1 (de) 2000-05-19 2001-11-29 Hawera Probst Gmbh Gesteinsbohrer
EP1302290B1 (fr) 2001-10-12 2008-07-02 Robert Bosch Gmbh Outil de forage
DE10334610B4 (de) * 2003-07-29 2006-04-20 Hilti Ag Bohrkopf
KR101161896B1 (ko) * 2004-08-25 2012-07-03 미츠비시 마테리알 가부시키가이샤 굴삭 공구
US7861807B2 (en) 2008-12-03 2011-01-04 Black & Decker Inc. Drill bit including one piece cutting head
KR20110128694A (ko) * 2010-05-24 2011-11-30 태양파워(주) 드릴 비트

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825107A1 (de) * 1988-07-23 1990-01-25 Hilti Ag Gesteinsbohrer mit schneidplatte

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0428953Y2 (fr) * 1986-12-02 1992-07-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3825107A1 (de) * 1988-07-23 1990-01-25 Hilti Ag Gesteinsbohrer mit schneidplatte

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685629A3 (fr) * 1994-06-04 1996-12-18 Hilti Ag Trépan de forage de roche.
WO1997019247A1 (fr) * 1995-11-23 1997-05-29 Techmo Entwicklungs- Und Vertriebs Gmbh Couronne de fleuret
EP0778390A3 (fr) * 1995-12-07 1998-07-01 HILTI Aktiengesellschaft Perceuse rotative hélicoidale à percussion
DE19734094A1 (de) * 1996-11-11 1998-05-14 Hawera Probst Gmbh Gesteinsbohrer
EP0943780A3 (fr) * 1998-03-18 2000-07-19 Plica Werkzeugfabrik Ag Outil de forage
DE19811887A1 (de) * 1998-03-18 1999-09-23 Plica Werkzeugfabrik Ag Mollis Hammerbohrwerkzeug
EP0943779A2 (fr) 1998-03-18 1999-09-22 Plica Werkzeugfabrik Ag Outil de forage à percussion
DE19944406A1 (de) * 1999-09-16 2001-05-03 Heller Dinklage Gmbh Geb Bohrer, insbesondere Gesteinsbohrer
GB2356164A (en) * 1999-09-16 2001-05-16 Heller Dinklage Gmbh Geb A drill, particularly a rock drill.
DE19964272C2 (de) * 1999-09-16 2003-05-28 Heller Dinklage Gmbh Geb Bohrer, insbesondere Gesteinsbohrer
DE19944406C2 (de) * 1999-09-16 2003-07-31 Heller Dinklage Gmbh Geb Gesteinsbohrer
GB2356164B (en) * 1999-09-16 2003-11-05 Heller Dinklage Gmbh Geb A drill, particularly a rock drill
EP1340604A2 (fr) * 2002-02-28 2003-09-03 Hawera Probst GmbH Foret
EP1340604A3 (fr) * 2002-02-28 2008-03-05 Robert Bosch Gmbh Foret
US7258180B2 (en) 2003-11-03 2007-08-21 Illinois Tool Works Inc. Rotary hammerdrill bit

Also Published As

Publication number Publication date
EP0452255A3 (en) 1992-10-28
ES2066407T3 (es) 1995-03-01
PL165702B1 (pl) 1995-01-31
EP0452255B1 (fr) 1994-12-14
JPH04228796A (ja) 1992-08-18
DE4011441A1 (de) 1991-10-10
JP2880584B2 (ja) 1999-04-12
AU631054B2 (en) 1992-11-12
PL289787A1 (en) 1991-10-21
DE59103840D1 (de) 1995-01-26
CA2040052C (fr) 1998-09-29
ATE115677T1 (de) 1994-12-15
AU7415991A (en) 1991-10-10
CA2040052A1 (fr) 1991-10-10

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