EP1095741B1 - Outil de forage et/ou de percussion - Google Patents

Outil de forage et/ou de percussion Download PDF

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Publication number
EP1095741B1
EP1095741B1 EP00810971A EP00810971A EP1095741B1 EP 1095741 B1 EP1095741 B1 EP 1095741B1 EP 00810971 A EP00810971 A EP 00810971A EP 00810971 A EP00810971 A EP 00810971A EP 1095741 B1 EP1095741 B1 EP 1095741B1
Authority
EP
European Patent Office
Prior art keywords
insertion end
tool
drilling
roughly
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.)
Expired - Lifetime
Application number
EP00810971A
Other languages
German (de)
English (en)
Other versions
EP1095741A2 (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 chiselling tool according to the preamble of Patent claim 1.
  • the invention also relates to a drilling and / or chiseling device with a tool holder for a drilling and / or chisel tool designed according to the invention according to the preamble of independent claim 6.
  • a pneumatic or a hydraulic Drive have.
  • the drilling and / or drilling tools used in conjunction with these devices For example, chisel tools have a hexagonally shaped insertion end for a correspondingly formed tool holder of the drilling and / or chiseling device.
  • tools that have a spigot with a variety of have elongated grooves There are also known tools that have an approximately trapezoidal cross-section and act in the tool holder of the drilling and / or chiseling device with axially extending, strip-shaped rotational drive bodies together, on the inner wall the tool holder are formed.
  • the axial locking of these known drilling and / or chisel tools by means of a device attached to the bracket, which can be pivoted is and provided on the drilling and / or chisel tool federal or like that engages behind.
  • the drilling and / or chiselling tools are used to produce deep hole drilling in rocks claimed by high torques, especially in the field of Rotary drive grooves or rotational engagement surfaces of the tool and the rotary driver in the area of the tool holder of the drilling and / or chiseling device to increased wear to lead.
  • the wear is exacerbated by the abrasive degradation products.
  • DE 1020660B discloses a tool according to the preamble of claim 1, a Drill and / or chisel tool with a shank, one with the Shank-connected, cylindrical spigot with a between the shaft and the insertion end arranged collar, which at least partially extends around the tool and the Shank and the insertion, at least partially radially surmounted; the insertion end has a diameter of 25 mm and the recess has a extending perpendicular to the central longitudinal axis of the tool Cross sectional area.
  • US 4491444 discloses a device according to the preamble of claim 6, a drilling and / or chiseling device for operation in connection with a drilling and / or chisel tool with a tool holder with at least one roller-shaped Rotary body, which in a in the inner wall of the Tool holder provided groove axially and radially fixed and is rotatable about its axis.
  • Object of the present invention is therefore to overcome these disadvantages of the prior Technique and to create a drilling and / or chiselling, in which the Service life is improved.
  • the drilling and / or chiselling tool for the Use in conjunction with electrically operated drilling and / or chiseling devices with be designed electro-pneumatic striking mechanism. It should too a drilling and / or Chiselêt be created with a tool holder, the lower susceptibility against wear.
  • the drill and / or chisel tool comprises a shaft and a shaft connected to the shaft, cylindrical insertion with at least one, the outer contour and the free end the insertion end open, elongated recess. Between the Shank and the insertion end a collar is arranged, which is at least partially around the tool extends around and the shaft and the insertion end at least partially protrudes radially.
  • the cylindrical insertion end has a diameter, which is equal to or greater than 18 mm, preferably greater than 22 mm.
  • the at least one Recess has a perpendicular to the central longitudinal axis of the tool extending and widening towards the outer contour, essentially part-circular formed cross-sectional area.
  • the inventive drill and / or chisel tool goes from a substantially cylindrical insertion end, the at least one Having recess which extends in the longitudinal direction and the free end and the Circumference is formed open.
  • Symmetry considerations and the better Force introduction because, the at least one receptacle has a perpendicular to Center longitudinal axis of the tool extending cross-sectional area, which is substantially is formed part-circular.
  • the at least one recess serves as Drive groove.
  • the inventive drilling and / or chiselling tool is also for the Use in conjunction with electrically operated drilling and / or chiseling devices Preparing the beneficial electropneumatic percussion technology and the Proven drive technology known from the prior art hammer drills which are designed for tools with insertion ends up to 18 mm and For example, be distributed by the applicant.
  • the recess has a Radius of curvature, which is about 0.1 times to about 0.35 times the diameter of the insertion end. In conjunction with the specified minimum diameter for the insertion end of the selected range for the radius of curvature as the round groove trained recess in conjunction with a correspondingly formed Rotary body to a flat system, which is beneficial to the wear the recess and / or a rotary driving body effects.
  • the insertion end has four recesses, the uniform are arranged distributed on the circumference of the insertion.
  • the greater number of Recesses allows the transmission of larger torques.
  • the axial securing of the drilling and / or chiseling tool is effected by a pivotable Bracket or the like, the federal government in the transition region from the shaft behind the insertion end.
  • a pivotable Bracket or the like the federal government in the transition region from the shaft behind the insertion end.
  • the outside diameter of the covenant is about 1.25 times to about 1.5 times the diameter of the male end.
  • the length of the insertion end is determined by the distance of the collar from the free end of the Stuck defined. So that a sufficiently large length for the axial recesses is created, proves a gap of the federal of the free end of the insertion end advantageous, which is about 7 times to about 9 times the diameter of the Spiky is.
  • a drilling and / or chiseling device with a tool holder for operation in conjunction with a drill and / or chisel tool comprises a Tool holder with at least one cylindrical rotary drive body.
  • the Rotary drive body is provided in a in the inner wall of the tool holder Groove axially and radially fixed.
  • the groove is formed such that the At least one roller-shaped rotary driving body in the groove rotatable about its axis is. Due to the rotatable mounting of the rotary drive body comes the entire surface the rotary driving body in engagement with the receptacle in the insertion end of the tool. As a result, wear phenomena on the entire surface of the rotary drive body distributed and its life is increased.
  • the arrangement of the rotary drive body is advantageously chosen such that about 30% to about 47% of its largest diameter protrude from the inner wall of the tool.
  • the rotational drive body are preferably uniform over the circumference the inner wall of the tool holder distributed. For reasons of space and because of simple symmetry, for example, four rotary drive body are provided.
  • each rotary body in the operation of the drilling and / or chiseling in all Laying of the tool in as large a plant as possible to each corresponding Recess remains in the insertion of the tool proves to each rotary body an axial length of advantage, which is about 25% to about 70% of the axial Length of a recess in the insertion end of the drilling and / or chiseling tool is.
  • the rotational driving body is ensured by the fact that the rotary driving body are fixed radially by a removable fixing sleeve, which at the of the inner wall facing away from the outside of the tool holder is fastened.
  • Fig. 1 is a perspective view of a male end of an inventive Drilling and / or chiselling tools
  • Fig. 2 is a side view of the male end of Fig. 1
  • 3 shows a section through the insertion end perpendicular to the tool axis.
  • Fig. 4 is an axial section of a drilling and / or chiseling device with a tool holder for an inventive drill and / or chisel tool.
  • An embodiment of a in Figs. 1-3 in different views and in Section shown drilling and / or chisel tool has the overall Reference numeral 1. It comprises a shaft 2 and a subsequent thereto Einsteckende 4. In the transition region from the shaft 2 to the insertion end 4 is a circumferential collar 3 is provided, which the insertion end 4 and the shaft 2 radially surmounted. At the insertion end opposite end of the shaft 2 is a Drill head arranged. In the figures has been dispensed with a representation of the drill head, because it is not relevant to the invention.
  • the diameter of the insertion end 4 is provided with the reference numeral d (FIG. 2) and equal to or greater than 18 mm, preferably greater than 22 mm, chosen.
  • 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 collar 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 Inserting 4 ( Figure 2).
  • the insertion end 4 is provided with a number of elongated recesses 5 - 8, the Outer contour and the open end 9 of the insertion 4 are formed open towards.
  • the insertion 4 four elongated recesses 5 - 8, the same angular distance from each other along the circumference of the insertion end 4 are arranged.
  • the recesses 5 - have 8 an axial length 1, which is about 2 times to about 4 times the diameter d of the insertion end 4 corresponds (Fig. 2).
  • the recesses 5 - 8 have a perpendicular to the central longitudinal axis of the tool 1 extending and the outer contour towards expanding, substantially part-circular cross-sectional area.
  • the radius of curvature r of the part-circular recesses 5 - 8 is approximately the same 0.1 times to about 0.35 times the diameter d of the male end 4 ( Figure 3).
  • Fig. 3 are in the two opposite each other on a diameter Recesses 6 and 8 each inscribed circles in circles to the part-circular To illustrate the education of the recesses.
  • the recesses 5-8 have an in Radial direction measured depth t with respect to the outer contour, which is about 50% to 100% of its radius of curvature r is ( Figure 3).
  • FIG. 4 shows an axial section of an embodiment of a tool holder 13 a drilling and / or chiseling device which is based on a drilling and / or chisel tool is tuned.
  • the tool holder 13 is in an axial projecting front portion of a device housing 10 is inserted.
  • One inside the housing 10 arranged rotary spindle carries the reference numeral 11.
  • an anvil element 12 which is a component of a preferably electropneumatic Schlagmaschines is and the transfer of axial blows to the rear free end 9 of a drill and / or chisel tool inserted into the tool holder 13 1 serves.
  • the tool holder inserted into the front section of the housing 10 13 is detachably, rotationally connected to the rotary spindle 11.
  • roller-shaped rotational driving body 15, 16 are arranged, the are defined axially and radially in grooves 21 in the tool holder 13. Training the grooves 21 is such that the roller-shaped rotational driving body 15, 16 can rotate around its own axis during operation.
  • the radial definition of the rotary drive body 15, 16 is effected by a cylindrical fixing sleeve 17, which on the outer side of the 19th the tool holder is mountable and is fixed by a clamping ring 18.
  • the cylindrical Rotary driving body 15, 16 are arranged in the grooves 21, that with about 30% to about 47% of its largest diameter g from the inner wall 14 of the tool holder 13 projecting.
  • the radius of curvature of the cylindrical Rotary driving body 15, 16 preferably corresponds to the radius of curvature of part-circular recordings formed in the insertion of the tool.
  • the length of the cylindrical rotational drive 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 chiseling tool 1. By these length ratios is ensured that the rotary driving body 15, 16 constantly in flat over its entire axial length Stay with the recesses 6, 8 in the insertion end 4 of the tool 1. to Illustration of this situation show the upper and lower half of Fig. 4 in the tool holder 13 inserted drilling and / or chisel tool 1 in two different Extreme positions. The lower half of Fig.
  • FIG. 4 shows the tool in his Starting position in which the free end 9 of the insertion end 4 abuts the striker element 12.
  • the upper half of Fig. 4 is the largest possible axial displacement of the tool 1 indicated in the tool holder 13.
  • the limitation of the axial displacement takes place by a bracket 20 which articulates at the front portion of the device housing 10 and is pivoted in such a way that he the annular collar 3 at the transition region from the shaft 2 to the insertion end 4 engages behind.
  • Fig. 4 only two rotational driving body 15, 16 are shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)

Claims (12)

  1. Outil de forage et/ou de burinage comprenant une tige (2), une extrémité insérable cylindrique (4) reliée à la tige (2) avec un collet (3) qui est disposé entre la tige (2) et l'extrémité insérable (4) et qui s'étend au moins en partie autour de l'outil (1) et, au moins par endroits, dépasse radialement de la tige (2) ainsi que de l'extrémité insérable (4), l'extrémité insérable (4) présentant un diamètre (d) égal ou supérieur à 18 mm, de préférence supérieur à 22 mm, et étant pourvue d'évidements (5-8) dont la section transversale s'étend perpendiculairement à l'axe longitudinal médian de l'outil (1), caractérisé en ce que l'extrémité insérable (4) comporte quatre évidements (5, 6, 7, 8), lesquels sont disposés sur la circonférence de l'extrémité insérable (4) avec, entre eux, un écart angulaire identique, sont conformés en ouvertures allongées en direction du contour extérieur et de l'extrémité libre de l'extrémité insérable (9), possèdent chacun une section transversale conformée sensiblement en cercle partiel et élargie vers le contour extérieur et présentent chacun une longueur (1) qui correspond à environ 2 fois à environ 4 fois le diamètre (d) de l'extrémité insérable (4).
  2. Outil de forage et/ou de burinage selon la revendication 1, caractérisé en ce que l'évidement (5-8) présente un rayon de courbure (r) qui correspond à environ 0,1 fois à environ 0,35 fois le diamètre (d) de l'extrémité insérable (4).
  3. Outil de forage et/ou de burinage selon la revendication 2, caractérisé en ce que l'évidement (5-8) présente, par rapport au contour extérieur, une profondeur (t), mesurée dans la direction radiale, qui correspond à environ 50 % à 100 % du rayon de courbure (r) de l'évidement (5-8).
  4. Outil de forage et/ou de burinage selon une des revendications précédentes, caractérisé en ce que le diamètre extérieur (o) du collet (3) correspond à environ 1,25 fois à environ 1,5 fois le diamètre (d) de l'extrémité insérable (4).
  5. Outil de forage et/ou de burinage selon la revendication 4, caractérisé en ce que la distance (a) du collet (3) à l'extrémité libre (9) de l'extrémité insérable (4) correspond à environ 7 fois à environ 9 fois le diamètre (d) de l'extrémité insérable (4).
  6. Appareil de forage et/ou de burinage à mettre en oeuvre en association avec un outil de forage et/ou de burinage selon une des revendications précédentes, comprenant un mandrin d'outil (13) avec au moins un corps d'entraínement en rotation en forme de tambour (15, 16), lequel est immobilisé axialement et radialement dans une rainure (21) ménagée dans la paroi intérieure (14) du mandrin d'outil (13) et peut tourner autour de son axe, caractérisé en ce que le corps d'entraínement en rotation (15, 16) dépasse de la paroi intérieure (14) du mandrin d'outil (13) d'une valeur égale à 30 % à 47 % de son plus grand diamètre (g).
  7. Outil de forage et/ou de burinage selon la revendication 6, caractérisé en ce que le rayon de courbure du corps d'entraínement en rotation (15, 16), au nombre d'au moins un, correspond au rayon de courbure (r) de l'évidement (5-8) dans l'extrémité insérable (4) de l'outil de forage et/ou de burinage (1) à insérer.
  8. Outil de forage et/ou de burinage selon la revendication 6 ou 7, caractérisé en ce que le nombre de corps d'entraínement en rotation (15, 16) dans le mandrin d'outil (13) correspond au nombre d'évidements (5-8) dans l'extrémité insérable (4) de l'outil de forage et/ou de burinage (1).
  9. Outil de forage et/ou de burinage selon la revendication 8, caractérisé en ce que les corps d'entraínement en rotation (15, 16) sont répartis de manière uniforme sur la circonférence de la paroi intérieure (14) du mandrin d'outil (13).
  10. Outil de forage et/ou de burinage selon la revendication 9, caractérisé en ce que le mandrin d'outil (13) comporte quatre corps d'entraínement en rotation (15, 16).
  11. Outil de forage et/ou de burinage selon une des revendications 6 à 10, caractérisé en ce que la longueur axiale (k) des corps d'entraínement en rotation (15, 16) dans le mandrin d'outil (13) correspond environ à 25 % à environ 70 % de la longueur axiale (1) du ou des évidements (5-8) dans l'extrémité insérable (4) de l'outil de forage et/ou de burinage (1).
  12. Outil de forage et/ou de burinage selon une des revendications 6 à 11, caractérisé en ce que le corps d'entraínement en rotation (15, 16), au nombre d'au moins un, est immobilisé radialement par l'intermédiaire d'un manchon de blocage cylindrique démontable (17) qui peut être fixé sur le côté extérieur (19) du mandrin d'outil (13).
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
DE19952225A DE19952225A1 (de) 1999-10-29 1999-10-29 Bohr- und/oder Meisselwerkzeug
DE1995225 1999-10-29

Publications (3)

Publication Number Publication Date
EP1095741A2 EP1095741A2 (fr) 2001-05-02
EP1095741A3 EP1095741A3 (fr) 2003-10-08
EP1095741B1 true 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
EP1535704B1 (fr) * 2003-11-26 2010-03-10 HILTI Aktiengesellschaft Porte-outil pour un outil rotatif à percussion
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

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US2479698A (en) * 1944-08-26 1949-08-23 Weatherhead Co Rock drill
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
AT377459B (de) * 1981-06-29 1985-03-25 Siderurgie Fse Inst Rech Verfahren zum koninuierlichen vergiessen von in einer kokille rotierendem schmelzfluessigem metall und vorrichtung zur durchfuehrung des verfahrens
SE459680B (sv) * 1984-10-01 1989-07-24 Santrade Ltd Borrstaal
DE3714679A1 (de) * 1985-11-11 1988-11-10 Hilti Ag Werkzeughalter
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
ATE159677T1 (de) * 1995-03-24 1997-11-15 Hilti Ag Vorrichtung zur übertragung von impulsartigen schlägen auf ein kontinuierlich rotierendes werkzeug
CN1060713C (zh) * 1995-10-12 2001-01-17 罗伯特-博希股份公司 用于具有钻和/或冲击驱动装置的电动机器的插装式工具和工具夹
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

Also Published As

Publication number Publication date
ZA200006038B (en) 2001-04-26
AU6543900A (en) 2001-05-03
DE19952225A1 (de) 2001-05-03
AU769729B2 (en) 2004-02-05
US6543558B1 (en) 2003-04-08
EP1095741A2 (fr) 2001-05-02
JP2001170875A (ja) 2001-06-26
DK1095741T3 (da) 2005-10-10
JP4751503B2 (ja) 2011-08-17
CA2323568A1 (fr) 2001-04-29
EP1095741A3 (fr) 2003-10-08
CN1294961A (zh) 2001-05-16
DE50010502D1 (de) 2005-07-14

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