EP1095741A2 - Outil de forage et/ou de percussion - Google Patents

Outil de forage et/ou de percussion Download PDF

Info

Publication number
EP1095741A2
EP1095741A2 EP00810971A EP00810971A EP1095741A2 EP 1095741 A2 EP1095741 A2 EP 1095741A2 EP 00810971 A EP00810971 A EP 00810971A EP 00810971 A EP00810971 A EP 00810971A EP 1095741 A2 EP1095741 A2 EP 1095741A2
Authority
EP
European Patent Office
Prior art keywords
drilling
insertion end
tool
chiseling
tool holder
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
EP00810971A
Other languages
German (de)
English (en)
Other versions
EP1095741B1 (fr
EP1095741A3 (fr
Inventor
Udo Hauptmann
Martin Richter
Konrad Artmann
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 EP1095741A2 publication Critical patent/EP1095741A2/fr
Publication of EP1095741A3 publication Critical patent/EP1095741A3/fr
Application granted granted Critical
Publication of EP1095741B1 publication Critical patent/EP1095741B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/084—Rotating chucks or sockets
    • B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0034—Details of shank profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/003—Details relating to chucks with radially movable locking elements
    • B25D2217/0038—Locking members of special shape
    • B25D2217/0046—Conically-shaped locking members

Definitions

  • the invention relates to a drilling and / or chisel tool according to the preamble of Claim 1.
  • the invention also relates to a tool holder of a drilling and / or chisel devices for a drilling and / or chisel tool designed according to the invention.
  • Chisel tools used that are pneumatic or hydraulic Have drive.
  • the drilling and / or used in connection with this equipment Chisel tools for example, have a hexagonally shaped insertion end for a correspondingly designed tool holder of the drilling and / or chiseling device.
  • Tools are also known which have a plug-in end with a large number of have elongated grooves.
  • the grooves have an approximately trapezoidal cross section and act in the tool holder of the drilling and / or chiseling device with axially extending strip-shaped rotary driving bodies together on the inner wall the tool holder are formed.
  • Drilling and / or chiseling tools are used to create deep holes in rock claimed by high torques, particularly in the area of Driving slots or driving surfaces of the tool and the turning drivers increased wear in the area of the tool holder of the drilling and / or chiseling device to lead. The wear is increased by the abrasive breakdown products.
  • the object of the present invention is therefore to overcome these disadvantages of the prior art Remedy technology and to create a drilling and / or chisel tool in which the Tool life is improved.
  • the drilling and / or chisel tool is also intended for the Use in conjunction with electrically operated drilling and / or chiseling devices electropneumatic hammer mechanism. It is also said to be a tool holder be created for a drilling and / or chiseling device that is less susceptible against wear.
  • the solution to these tasks is a drilling and / or chisel tool with the Features stated in the characterizing section of claim 1.
  • Beneficial Variants of the invention and / or preferred exemplary embodiments are the subject matter dependent claims.
  • One on the drilling and / or Chisel tool coordinated tool holder of a drilling and / or chiseling device is also the subject of dependent claims.
  • the drilling and / or chisel tool according to the invention comprises a shaft and a shaft connected to the shaft, cylindrical insertion end with at least one, for the outer contour and the free end of the insertion end open, elongated recess.
  • the cylindrical insertion end has a diameter which is equal to or larger than 18 mm, preferably larger than 22 mm.
  • the at least one The recess has a perpendicular to the central longitudinal axis of the tool extending and widening towards the outer contour, essentially part-circular trained cross-sectional area.
  • the drilling and / or chiseling tool according to the invention proceeds a substantially cylindrical insertion end, the at least one Has recess which runs in the longitudinal direction and to the free end and Is open to the extent. From symmetry considerations and the better Because of the introduction of force, the at least one receptacle has a perpendicular to the Central cross-sectional area of the tool extending, which essentially is partially circular.
  • the at least one recess serves as Rotary driving groove.
  • Rotary driving body in a tool holder of a drilling and / or chiseling device has the rotary driving groove present as a round groove because of its cross-sectional shape in the Torque transmission less wear than the insertion ends of the State of the art tools.
  • the open design of the round groove towards the free end of the insertion end facilitates the precise insertion of the tool.
  • the drilling and / or chiseling tool according to the invention is also for the Use in conjunction with electrically operated drilling and / or chiseling devices prepared, which the advantageous electro-pneumatic hammer technology and the Proven drive technology of the hammer drilling machines known from the prior art have, which are designed for tools with insertion ends up to 18 mm and for example also be sold by the applicant.
  • the recess has a Radius of curvature that is about 0.1 times to about 0.35 times the diameter corresponds to the insertion end.
  • the selected area for the radius of curvature leads to the insertion end as a round groove trained recess in connection with a correspondingly trained Rotary drive body to a flat system, which is advantageous on the wear the recess and / or a rotary driving body.
  • a depth measured in the radial direction is advantageous in relation to the outer contour, about 50% to 100% of the radius of curvature of the round groove Recess is.
  • the insertion end has four recesses that are uniform are arranged distributed around the circumference of the insertion end.
  • the larger number of Recesses allow the transmission of larger torques.
  • the drilling and / or chisel tool is axially secured by a swivel-in mechanism Bracket or the like, the collar in the transition area from the shaft reaches behind the insertion end. So even in tough use for the tool Secure axial hold is guaranteed and it is due to the free rear end Axial impacts from the insertion end are not inadvertently released from the tool holder falls, the outer diameter of the collar is about 1.25 times to about 1.5 times the diameter of the insertion end.
  • the length of the insertion end is determined by the distance of the federal government from the free end of the Defining what defines it. This is a sufficient length for the axial recesses created, there is a distance between the federal government and the free end of the insertion end of advantage, which is about 7 times to about 9 times the diameter of the Inserting amounts.
  • a tool holder of a drilling and / or chiseling device for use in connection with a drilling and / or chiseling tool comprises a Tool holder with at least one roller-shaped rotary drive body.
  • the Rotary driving body is provided in a in the inner wall of the tool holder Groove defined axially and radially.
  • the groove is designed such that the at least one roller-shaped rotary drive body rotatable in the groove about its axis is.
  • the entire surface comes through the rotatable mounting of the rotary driving body of the rotary drive body in engagement with the holder in the insertion end of the tool. This causes wear and tear on the entire surface of the rotary drive body distributed and its lifespan is increased.
  • the arrangement of the rotary drive body is advantageously chosen such that about 30% to about 47% of its protrude from the inner wall of the tool.
  • the radius of curvature of the at least one rotary driving body the radius of curvature the recess in the insertion end.
  • Drilling and / or chisel tools and for the transmission of high torques corresponds to the number of rotary driving bodies in the tool holder Advantage of the number of recesses in the insertion end of the drilling and / or chiseling tool.
  • the rotary drive bodies are preferably uniform over the circumference distributed around the inner wall of the tool holder. For reasons of space and because of simple symmetry, for example, four rotary driving bodies are provided.
  • FIGS. 1-3 An embodiment of one in FIGS. 1-3 in different views or in The drilling and / or chisel tool shown in section bears this overall Reference symbol 1. It comprises a shaft 2 and an adjoining one Insertion end 4. In the transition area from shaft 2 to insertion end 4 there is an circumferential collar 3 is provided, the insertion end 4 and the shaft 2 radially towered over. At the insertion end opposite the end of the shaft 2 is a Drill head arranged. An illustration of the drill head has been omitted in the figures, since it is of no further importance for the invention.
  • the diameter of the insertion end 4 is provided with the reference symbol d (FIG. 2) and is equal to or greater than 18 mm, preferably larger than 22 mm.
  • the collar 3 has an outer diameter o, the about 1.25 times to about 1.5 times the diameter d of the insertion end is (Fig. 2).
  • the distance of the federal government 3 from the free end 9 of the insertion end 4 is with a denotes and is about 7 times to about 9 times the diameter d of the Inserting 4 (Fig. 2).
  • the insertion end 4 is provided with a number of elongated recesses 5-8, which for The outer contour and the free end 9 of the insertion end 4 are open.
  • the tool 1 has the insertion end 4 four elongated recesses 5 - 8, which are at the same angular distance from each other the circumference of the insertion end 4 are arranged.
  • the recesses 5 - 8 have an axial length 1 which is about 2 times to about 4 times the diameter d corresponds to the insertion end 4 (Fig. 2).
  • the recesses 5 - 8 have one perpendicular to the central longitudinal axis of the tool 1 and to the outer contour towards widening, essentially part-circular cross-sectional area.
  • the radius of curvature r of the part-circular recesses 5-8 is approximately that 0.1 times to about 0.35 times the diameter d of the insertion end 4 (Fig. 3).
  • Fig. 3 are in the two opposite to each other on a diameter Recesses 6 and 8 each have dashed circles inscribed around the part-circular To illustrate the formation of the recesses.
  • the recesses 5-8 have an in depth t measured in the radial direction with respect to the outer contour, which is about 50% to 100% of its radius of curvature r is (Fig. 3).
  • FIG. 4 shows an axial section of an exemplary embodiment of a tool holder 13 of a drilling and / or chiseling device which is mounted on a drilling and / or chisel tool is matched.
  • the tool holder 13 is axial projecting front portion of a device housing 10 is used.
  • One inside of the housing 10 arranged rotary spindle bears the reference numeral 11.
  • a striking element 12 which is a component of a preferably electropneumatic Percussion mechanism and the transmission of axial impacts to the rear Free end 9 of a drilling and / or chiseling tool inserted into the tool holder 13 1 serves.
  • the tool holder inserted in the front section of the housing 10 13 is detachably, rotationally connected to the rotary spindle 11.
  • roller-shaped rotary drive bodies 15, 16 are arranged are defined axially and radially in grooves 21 in the tool holder 13. Training of the grooves 21 is such that the roller-shaped rotary driving bodies 15, 16 can rotate around their own axis during operation.
  • the radial fixation of the rotary drive body 15, 16 takes place through a cylindrical fixing sleeve 17, which is on the outside 19 the tool holder can be mounted and is fixed by a clamping ring 18.
  • the roller-shaped Rotary driving bodies 15, 16 are arranged in the grooves 21 such that they with about 30% to about 47% of their largest diameter g compared to the inner wall 14 project the tool holder 13.
  • the radius of curvature of the roller-shaped Rotary driving body 15, 16 preferably corresponds to the radius of curvature of the Partially circular receptacles in the insertion end of the tool.
  • the length of the drum-shaped rotary driver body 15, 16 is about 25% to about 70% of the axial Length 1 of the elongated recesses 6, 8 in the insertion end 4 of the inventive Drilling and / or chisel tool 1. These length ratios ensure that the rotary drive body 15, 16 constantly over its entire axial length in a flat area System with the recesses 6, 8 remain in the insertion end 4 of the tool 1.
  • FIG. 4 in the tool holder 13 used drilling and / or chisel tool 1 in two different Extreme positions.
  • the lower half of FIG. 4 shows the tool in its Starting position in which the free end 9 of the insertion end 4 rests on the striking element 12.
  • the greatest possible axial displacement of the tool is in the upper half of FIG. 4 1 indicated in the tool holder 13.
  • Limiting the axial displacement is carried out by a bracket 20 which is articulated on the front portion of the device housing 10 and can be pivoted in such a way that it forms the annular collar 3 at the transition region reaches behind from shaft 2 to insertion end 4.
  • FIG. 4 shows only two rotary driving bodies 15, 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)
EP00810971A 1999-10-29 2000-10-20 Outil de forage et/ou de percussion Expired - Lifetime EP1095741B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995225 1999-10-29
DE19952225A DE19952225A1 (de) 1999-10-29 1999-10-29 Bohr- und/oder Meisselwerkzeug

Publications (3)

Publication Number Publication Date
EP1095741A2 true EP1095741A2 (fr) 2001-05-02
EP1095741A3 EP1095741A3 (fr) 2003-10-08
EP1095741B1 EP1095741B1 (fr) 2005-06-08

Family

ID=7927368

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00810971A Expired - Lifetime EP1095741B1 (fr) 1999-10-29 2000-10-20 Outil de forage et/ou de percussion

Country Status (9)

Country Link
US (1) US6543558B1 (fr)
EP (1) EP1095741B1 (fr)
JP (1) JP4751503B2 (fr)
CN (1) CN1294961A (fr)
AU (1) AU769729B2 (fr)
CA (1) CA2323568A1 (fr)
DE (2) DE19952225A1 (fr)
DK (1) DK1095741T3 (fr)
ZA (1) ZA200006038B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502004010872D1 (de) * 2003-11-26 2010-04-22 Hilti Ag Werkzeugaufnahme für ein drehendes und schlagendes Werkzeug
DE102004054685A1 (de) * 2004-11-12 2006-05-18 Hilti Ag Werkzeugaufnahme
AU2007202963A1 (en) * 2006-07-01 2008-01-17 Black & Decker, Inc. A beat piece wear indicator for a hammer drill
CN102848130A (zh) * 2012-07-30 2013-01-02 江阴市振江钢结构有限公司 一种用于火焰切割硬化钢板表面打毛的冲头
CN104453718A (zh) * 2014-11-07 2015-03-25 湖北鸣利来冶金机械科技有限公司 一种三牙轮钻头的排渣型牙掌
WO2016172480A1 (fr) * 2015-04-22 2016-10-27 Milwaukee Electric Tool Corporation Perceuse à percussion
CN105328488B (zh) * 2015-12-09 2017-12-19 苏州新锐合金工具股份有限公司 三牙轮钻头牙掌基准面、孔加工夹具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020660B (de) * 1954-12-04 1957-12-12 Schoeller Bleckmann Stahlwerke Verfahren zur Verbesserung der Haltbarkeit von Gesteinshohlbohrern
GB1010028A (en) * 1964-04-30 1965-11-17 Ingersoll Rand Co A percussively-operated tool bit and method of making same
FR2278454A1 (fr) * 1974-03-26 1976-02-13 Lamy Andre Appareil a decoller les paquets d'huitres japonaises
US4491444A (en) * 1981-06-29 1985-01-01 Hilti Aktiengesellschaft Tool holder device
DE3714679A1 (de) * 1985-11-11 1988-11-10 Hilti Ag Werkzeughalter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479698A (en) * 1944-08-26 1949-08-23 Weatherhead Co Rock drill
SE459680B (sv) * 1984-10-01 1989-07-24 Santrade Ltd Borrstaal
SE8600199L (sv) * 1986-01-17 1987-07-18 Loevab Loef Och Oestlund Ab Borrverktyg
DE4141846A1 (de) * 1991-12-18 1993-06-24 Hilti Ag Werkzeug zum schlagbohren und meisseln und werkzeugaufnahme fuer diese werkzeuge
EP0733443B1 (fr) * 1995-03-24 1997-10-29 HILTI Aktiengesellschaft Dispositif pour transmettre des coups par impulsion sur un outil à rotation continue
EP0854773B1 (fr) * 1995-10-12 2003-04-09 Robert Bosch Gmbh Outil inserable et porte-outil pour machines electriques a percer et/ou percutantes
US6253864B1 (en) * 1998-08-10 2001-07-03 David R. Hall Percussive shearing drill bit
JP3075284B2 (ja) * 1998-10-12 2000-08-14 株式会社日立製作所 紙葉類集積装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020660B (de) * 1954-12-04 1957-12-12 Schoeller Bleckmann Stahlwerke Verfahren zur Verbesserung der Haltbarkeit von Gesteinshohlbohrern
GB1010028A (en) * 1964-04-30 1965-11-17 Ingersoll Rand Co A percussively-operated tool bit and method of making same
FR2278454A1 (fr) * 1974-03-26 1976-02-13 Lamy Andre Appareil a decoller les paquets d'huitres japonaises
US4491444A (en) * 1981-06-29 1985-01-01 Hilti Aktiengesellschaft Tool holder device
DE3714679A1 (de) * 1985-11-11 1988-11-10 Hilti Ag Werkzeughalter

Also Published As

Publication number Publication date
AU769729B2 (en) 2004-02-05
JP2001170875A (ja) 2001-06-26
AU6543900A (en) 2001-05-03
CN1294961A (zh) 2001-05-16
DK1095741T3 (da) 2005-10-10
DE50010502D1 (de) 2005-07-14
EP1095741B1 (fr) 2005-06-08
EP1095741A3 (fr) 2003-10-08
DE19952225A1 (de) 2001-05-03
CA2323568A1 (fr) 2001-04-29
US6543558B1 (en) 2003-04-08
JP4751503B2 (ja) 2011-08-17
ZA200006038B (en) 2001-04-26

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