EP1819902B1 - Porte-outil - Google Patents

Porte-outil Download PDF

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Publication number
EP1819902B1
EP1819902B1 EP05798097.1A EP05798097A EP1819902B1 EP 1819902 B1 EP1819902 B1 EP 1819902B1 EP 05798097 A EP05798097 A EP 05798097A EP 1819902 B1 EP1819902 B1 EP 1819902B1
Authority
EP
European Patent Office
Prior art keywords
chisel
connecting section
base part
chisel holder
section
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
EP05798097.1A
Other languages
German (de)
English (en)
Other versions
EP1819902A1 (fr
Inventor
Bernd Holl
Günter TEWES
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.)
Wirtgen GmbH
Original Assignee
Wirtgen 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=35457998&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1819902(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wirtgen GmbH filed Critical Wirtgen GmbH
Publication of EP1819902A1 publication Critical patent/EP1819902A1/fr
Application granted granted Critical
Publication of EP1819902B1 publication Critical patent/EP1819902B1/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
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/18—Mining picks; Holders therefor

Definitions

  • the invention relates to a bit holder for a road milling machine or the like with a base part, which carries a holding lug, wherein the holding lug has a chisel receptacle and wherein in the tool feed direction of the chisel holder before the holding lug, a projection is connected to the base part.
  • a chisel holder is known which has a holding approach.
  • In the holding approach designed as a chisel receiving cylindrical bore is introduced.
  • a projection is arranged in the feed direction before the holding lug. This is connected via a connecting portion with the holding approach.
  • the retaining lug has a bearing surface.
  • a chisel holder which has a holding approach with a chisel holder.
  • the holding lug is provided with wear marks that clearly show the state of wear of the chisel holder.
  • a similar chisel holder is also from the DE 20 2005 001 311 U1 known.
  • DE 101 42 438 A1 shows a chisel holder with a holding lug, in which a chisel holder is introduced.
  • the bit holder is drilled in a cylindrical part of the retaining lug so that an annular support surface rotates about the bore entry of the bit holder.
  • On this support surface a chisel head is supported with the interposition of a wear protection disc.
  • the wear protection disc covers the support surface. During operation, the bit head rotates on the wear plate.
  • Another chisel holder is from the DE 43 22 401 C2 known.
  • the bit holder is provided with a plug-in approach, with which he is held interchangeable in a socket of a base body.
  • the base body is on the outside circumference attached to a Fräswalzenrohres.
  • the plug attachment of the chisel holder is connected in one piece to a base part.
  • the base part carries on the side facing away from the plug approach a holding approach.
  • the holding approach is provided with a bore into which a shank bit can be used in a known manner.
  • the shows DE 37 01 905 C1 an example of a possible mounting situation.
  • chisel holders are used on road milling machines, but also on earthworking machines, such as soil stabilizers, mining machines, etc.
  • earthworking machines such as soil stabilizers, mining machines, etc.
  • the power consumption of the machine changes. It turns out that coatings built up in layers, which tend to form flake chips during cutting, present a high resistance to the tool. For example, such chip forms when dividing asphalt surfaces, in which there is an insufficient bond between the top layer (usually about 4 cm thick) and the binder layer.
  • the bit holder has a base part, in which a bore formed as a bit holder is introduced.
  • the base member has a projecting end portion which is frusto-conical in shape from a circumferential wall.
  • a round shank chisel can be inserted with its chisel shank.
  • a chisel head is formed, which rests with a bearing surface on an annular circumferential support surface of the end portion.
  • the bit holder rotates in the bit holder.
  • Another chisel holder is in DE 298 05 007 U1 disclosed.
  • the base part has a chip breaker designed as a connecting portion which is integrally formed on the base part and extending from the holding approach at least partially over the projection.
  • the end portion of the retaining lug has a drill bit holder formed as a bore, that the end portion has an annularly around the central longitudinal axis of the bit holder rotating support surface, that the support surface radially outward lying to the dimensional limitations of a cylindrical portion extends the end portion and that the connecting portion is recessed in the axial direction relative to the support surface is attached to the holding lug.
  • the cylindrical portion of the holding approach forms a wear zone, as they are in principle in the DE 199 02 766.8-24 is described.
  • the head of a shank bit is supported with the interposition of a wear protection disc.
  • the wear protection disc extends at least up to the dimensional limitations of the support surface. This creates a wear system.
  • the wear protection disc rotates on the support surface and continuously cuts off the cylindrical area. Due to the set-back arrangement of Connecting portion of the holding approach is stabilized, but does not affect this wear system.
  • the resulting chips especially larger clods can be effectively divided.
  • the cutting resistance of the bit holder the milled material is reduced contrary, resulting in a reduction in power consumption.
  • connection of the holding approach to the projection by means of the connecting portion brings improved tool rigidity. This has a positive effect especially in the case of exposed retaining lugs and / or projections and leads to an increase in the service life.
  • the connecting portion forms a web portion, that the holding lug has an over the base portion projecting end portion and that the transverse to the feed direction web width is smaller than the dimension of the end portion in this direction.
  • the connecting section extends in the tool feed direction. In this way, a cutting geometry is created, which opposes the milled material low penetration resistance.
  • the connecting section has chip guiding surfaces on both sides of the web section, which diverge starting from the web section in the direction of the base part and the connecting section is connected to the retaining shoulder via hollow-throat-shaped transition sections.
  • An optimization of the cutting geometry of the chisel holder results from the fact that the base part in the region of the projection is bounded laterally by two inclined surfaces which are arrow-shaped in the tool feed direction and in that the connecting portion and the inclined surface leak in a front end region of the projection.
  • the front earth area forms a tapered section which allows a good chip removal, especially with coarse chip milling ground.
  • the service life of the chisel holder can be optimized in that the connecting portion is hardened and / or that at least one hard material element is applied to the connecting portion.
  • a hard material element for example, a hard metal can be used.
  • a good chip-breaking geometry results from the fact that the connecting portion has a conical or rounded cutting edge shape.
  • the Fig. 1 shows a chisel holder with a base part 10.
  • the base part 10 has a support member with a downwardly facing support surface 11.
  • the support member is in the feed direction in a projection 15 on.
  • the projection 15 is at an angle to the support member.
  • a downwardly projecting tab 12 is integrally formed on the base part 10. With the plug neck 12 of the bit holder can be inserted into a socket of a base body 50. In the plug-in receptacle 12, the plug-in projection 12 can then be tensioned.
  • Front centering surfaces 13 and a in Fig. 2 shown back clamping surface 12.1 of the plug-in projection 12 serve as a support.
  • the bit holder In the assembled state, the bit holder is supported by its support surface 11 on a mating surface of the base body 50.
  • the projection 15 covers a shoulder 51 of the base body 50 and thus protects it from the wear attack of the removed milled material.
  • a holding lug 30 is integrally formed via a connecting portion 35.
  • the connecting portion 35 may also have a frusto-conical or hollow throat-shaped geometry. At its end facing away from the connecting portion 35 of the holding lug 30 runs in a projecting cylindrical end portion 34 from.
  • wear marks 34.1 In this end portion 34 two concentric about a introduced into the holding lug 30 bore (bit holder 31) rotating wear marks 34.1 are screwed.
  • the wear marks 34.1 thus form groove-shaped recesses, which are arranged behind a cylindrical end portion 34 final support surface 33.
  • a round shank chisel 40 can be inserted with its shank portion in the bit holder 31.
  • the round shank chisel then has on the shank portion a chisel head 41 which carries a chisel tip made of hard material.
  • the bit head 41 is supported by the interposition of a wear plate 42 on the support surface 33 of the retaining lug 30 from.
  • FIG. 2 clearly shows the holding lug 30 forms between the cylindrical end portion 34 and the rounding portion 35 has a central connecting part 34.2. This is connected by means of a connecting portion 20 to the projection 15 in one piece.
  • the connecting portion 20 extends starting from the connecting part 34.2 in the tool feed direction. It has a flattened web portion 21, which merges via inclined rake surfaces 22 in the side surfaces 19 of the projection 15. The connecting portion 20 continuously runs out toward a front end portion of the projection 15.
  • Two oblique surfaces 14 laterally delimiting the projection 15 likewise run out in this area, so that an arrow-shaped contour results with the connecting section 20 and the inclined surfaces 14.
  • the projection 15 is closed in the end region by means of a rounding transition 16.
  • the inclined surfaces 14 adjoin the side surfaces 19 via rounding transitions 17.
  • the connecting portion 20 is connected to the holding lug 30 for reasons of voltage optimization on the one hand and for improved chip removal on the other hand with rounded transition sections 18,23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Road Repair (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (8)

  1. Porte-outil pour fraiseuse à froid ou machine de ce type, comportant une embase (10) qui porte une pièce de maintien (30), ladite pièce de maintien (30) présentant un logement pour outil (31), un épaulement (15) étant rapporté sur l'embase (10) dans le sens d'avance du porte-outil en amont de la pièce de maintien (30), une section terminale (34) de la pièce de maintien (30) présentant un logement pour outil (31) sous forme d'un alésage, ladite pièce de maintien (30) présentant une section terminale (34) en porte à faux au-dessus de l'embase (10), la section terminale (34) présentant une surface d'appui (33) annulaire autour de l'axe longitudinal central du logement pour outil (31),
    la surface d'appui (33) s'étendant de manière radiale à l'extérieur jusqu'aux limites dimensionnelles d'une zone cylindrique de la section terminale (34),
    caractérisé en ce que
    l'embase (10) présente une section d'assemblage (20) façonnée comme brise-copeaux et moulée contre l'embase (10) et qui s'étend de la pièce de maintien (30) au-delà de l'épaulement (15) au moins partiellement, en ce que la section d'assemblage (20) soit raccordée à la pièce de maintien (30) en retrait par rapport à la surface d'appui (33) dans le sens de l'axe longitudinal central du logement pour outil,
    en ce que la section d'assemblage (20) forme une section d'entretoise (21),
    et en ce que la largeur de l'entretoise est plus petite perpendiculairement au dispositif d'avance que la taille de la section terminale (34) dans ce sens.
  2. Porte-outil selon la revendication 1,
    caractérisé en ce que
    la section d'assemblage (20) s'étend dans le sens de l'avance de l'outil.
  3. Porte-outil selon une des revendications 1 ou 2,
    caractérisé en ce que
    la section d'assemblage (20) présente des surfaces déflectrices (22) des deux côtés de la section d'entretoise (21), lesquelles partant de la section d'entretoise (21) divergent en direction de l'embase (10).
  4. Porte-outil selon les revendications 1 à 3,
    caractérisé en ce que
    la section d'assemblage (20) est raccordée à la pièce de maintien (30) par l'intermédiaire de sections transitoires (18) concaves.
  5. Porte-outil selon une des revendications 1 à 4,
    caractérisé en ce que
    l'embase (10) est délimitée latéralement par deux surfaces obliques (14) au niveau de l'épaulement (15), lesquelles sont disposées en forme de flèche l'une par rapport à l'autre dans le sens d'avance de l'outil et
    en ce que la section d'assemblage (20) et la surface oblique (14) dans une zone terminale en façade de l'épaulement (15).
  6. Porte-outil selon une des revendications 1 à 5,
    caractérisé en ce que
    la section d'assemblage (20) est trempée.
  7. Porte-outil selon une des revendications 1 à 6,
    caractérisé en ce que
    sur la section d'assemblage (20) est placé au moins un élément en matériau dur.
  8. Porte-outil selon une des revendications 1 à 7,
    caractérisé en ce que
    la section d'assemblage (20) présente une forme de forme de taillant conique ou arrondie.
EP05798097.1A 2004-11-26 2005-10-08 Porte-outil Expired - Lifetime EP1819902B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004057302A DE102004057302B4 (de) 2004-11-26 2004-11-26 Meißelhalter
PCT/EP2005/010865 WO2006056269A1 (fr) 2004-11-26 2005-10-08 Porte-outil

Publications (2)

Publication Number Publication Date
EP1819902A1 EP1819902A1 (fr) 2007-08-22
EP1819902B1 true EP1819902B1 (fr) 2018-12-12

Family

ID=35457998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05798097.1A Expired - Lifetime EP1819902B1 (fr) 2004-11-26 2005-10-08 Porte-outil

Country Status (11)

Country Link
US (1) US7300115B2 (fr)
EP (1) EP1819902B1 (fr)
JP (1) JP4728341B2 (fr)
KR (1) KR100915603B1 (fr)
CN (1) CN101175895B (fr)
AU (1) AU2005309142B2 (fr)
BR (1) BRPI0518252B1 (fr)
DE (1) DE102004057302B4 (fr)
RU (1) RU2347907C1 (fr)
TR (1) TR201900655T4 (fr)
WO (1) WO2006056269A1 (fr)

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WO2025233217A1 (fr) * 2024-05-06 2025-11-13 Wirtgen Gmbh Porte-burin
WO2025233214A1 (fr) * 2024-05-06 2025-11-13 Wirtgen Gmbh Support de trépan
WO2025233213A1 (fr) * 2024-05-06 2025-11-13 Wirtgen Gmbh Support de burin

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USD575610S1 (en) * 2006-03-10 2008-08-26 Wirtgen Gmbh Chisel holder
US7380887B2 (en) * 2006-04-13 2008-06-03 Keystone Engineering & Manufacturing Corp. Tool holder
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DE102008045825B3 (de) * 2008-09-05 2010-05-27 Wirtgen Gmbh Meißelhalter für eine Schrämmaschine, Straßenfräse, Suface-Miner oder dergleichen
US8523290B2 (en) * 2009-04-10 2013-09-03 Kennametal Inc. Rotatable cutting tool-tool holder-base assembly
DE102009059189A1 (de) 2009-12-17 2011-06-22 Wirtgen GmbH, 53578 Meißelhalter und Basisteil zur Aufnahme eines Meißelhalters
DE102009059188A1 (de) * 2009-12-17 2011-06-22 Wirtgen GmbH, 53578 Meißelhalter und Basisteil
USD632703S1 (en) * 2010-01-07 2011-02-15 Wirtgen Gmbh Kicker plate
USD624940S1 (en) * 2010-01-07 2010-10-05 Wirtgen Gmbh Kicker plate
USD628602S1 (en) * 2010-01-07 2010-12-07 Wirtgen Gmbh Kicker plate
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US8313153B2 (en) * 2010-03-24 2012-11-20 Kennametal Inc. Rotatable cutting tool and tool holder assembly
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DE102011051525A1 (de) 2011-07-04 2013-01-10 Wirtgen Gmbh Meißelhalter für eine Bodenbearbeitungsmaschine
PL2543815T4 (pl) 2011-07-04 2020-06-15 Wirtgen Gmbh Imak nożowy i układ imaka nożowego z imakiem nożowym i częścią podstawową
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USD677285S1 (en) * 2011-11-23 2013-03-05 Wirtgen Gmbh Chisel holder bar
USD688282S1 (en) * 2012-02-09 2013-08-20 Frank Friedrich Lachmann Tool
GB201202533D0 (en) * 2012-02-14 2012-03-28 Element Six Gmbh Pick tool and method of using same
USD680560S1 (en) * 2012-07-31 2013-04-23 Caterpillar Paving Products Inc. Deflector for paving apparatus
USD681069S1 (en) * 2012-07-31 2013-04-30 Caterpillar Paving Products Inc. Mounting block for paving apparatus
USD692037S1 (en) * 2012-12-05 2013-10-22 Wirtgen Gmbh Chisel holder
US9441482B2 (en) 2013-01-30 2016-09-13 Novatek Ip, Llc Hammer element on a degradation pick
USD692040S1 (en) * 2013-04-12 2013-10-22 Wirtgen Gmbh Chisel holder
USD692039S1 (en) * 2013-04-12 2013-10-22 Wirtgen Gmbh Chisel holder
RU2666906C2 (ru) * 2013-06-18 2018-09-13 Эско Корпорейшн Резец для добычи полезных ископаемых, резцедержатель и их комбинация
USD707736S1 (en) 2013-06-19 2014-06-24 Bernd Heinrich Ries Chisel holder
USD736283S1 (en) * 2013-06-19 2015-08-11 Element Six Gmbh Chisel holder
USD711442S1 (en) * 2013-07-15 2014-08-19 Wirtgen Gmbh Chisel holder
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025233217A1 (fr) * 2024-05-06 2025-11-13 Wirtgen Gmbh Porte-burin
WO2025233214A1 (fr) * 2024-05-06 2025-11-13 Wirtgen Gmbh Support de trépan
WO2025233213A1 (fr) * 2024-05-06 2025-11-13 Wirtgen Gmbh Support de burin

Also Published As

Publication number Publication date
DE102004057302B4 (de) 2011-01-13
EP1819902A1 (fr) 2007-08-22
JP4728341B2 (ja) 2011-07-20
WO2006056269A1 (fr) 2006-06-01
CN101175895B (zh) 2010-05-05
US7300115B2 (en) 2007-11-27
JP2008530393A (ja) 2008-08-07
KR20070086512A (ko) 2007-08-27
AU2005309142A1 (en) 2006-06-01
BRPI0518252B1 (pt) 2017-05-09
RU2347907C1 (ru) 2009-02-27
BRPI0518252A2 (pt) 2008-11-11
KR100915603B1 (ko) 2009-09-07
US20060119165A1 (en) 2006-06-08
AU2005309142B2 (en) 2011-06-30
RU2007123705A (ru) 2009-01-10
TR201900655T4 (tr) 2019-02-21
DE102004057302A1 (de) 2006-06-01
CN101175895A (zh) 2008-05-07

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