EP2160274B1 - Ciseau à ébaucher - Google Patents

Ciseau à ébaucher Download PDF

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Publication number
EP2160274B1
EP2160274B1 EP08773352A EP08773352A EP2160274B1 EP 2160274 B1 EP2160274 B1 EP 2160274B1 EP 08773352 A EP08773352 A EP 08773352A EP 08773352 A EP08773352 A EP 08773352A EP 2160274 B1 EP2160274 B1 EP 2160274B1
Authority
EP
European Patent Office
Prior art keywords
shank
bit
clamping sleeve
chisel
head
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.)
Active
Application number
EP08773352A
Other languages
German (de)
English (en)
Other versions
EP2160274A1 (fr
Inventor
Thomas WÖHRSTEIN
Thomas Lehnert
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.)
Betek GmbH and Co KG
Original Assignee
Betek GmbH and Co KG
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 Betek GmbH and Co KG filed Critical Betek GmbH and Co KG
Publication of EP2160274A1 publication Critical patent/EP2160274A1/fr
Application granted granted Critical
Publication of EP2160274B1 publication Critical patent/EP2160274B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/186—Tools therefor, e.g. having exchangeable cutter bits
    • B28D1/188—Tools therefor, e.g. having exchangeable cutter bits with exchangeable cutter bits or cutter segments
    • 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
    • E21C35/188—Mining picks; Holders therefor characterised by adaptations to use an extraction tool
    • 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
    • E21C35/19—Means for fixing picks or holders
    • E21C35/197—Means for fixing picks or holders using sleeves, rings or the like, as main fixing elements

Definitions

  • the invention relates to a shank bit having a chisel head and a chisel shank, wherein the chisel shank carries a clamping sleeve, in which the chisel shank is held captive in the direction of its longitudinal axis and freely rotatable about its longitudinal axis.
  • Such shank bits are known in many variants. They are commonly used in mining machines, road milling machines, and the like for removing tar, rocks, etc.
  • the shank bits are mounted in Mei- ⁇ elhaltern, which are held on a milling drum of the machine.
  • the Mei- ⁇ elhalter have a bore as a bit holder.
  • the chisel shaft is inserted with its clamping sleeve.
  • the clamping sleeve resiliently braced against the inner wall of the bit holder.
  • the shank bit is captive in the clamping sleeve in the direction of its longitudinal axis, but kept freely rotatable.
  • a chisel tip held on the chisel head is passed over the material to be removed and wears together with the chisel head.
  • the shank bit When the wear limit is reached, the shank bit must be replaced.
  • an axial force To overcome the clamping force of the clamping sleeve, an axial force must be introduced into the shank bit.
  • various tools are known that can be used for this purpose. For example, this describes WO 97/23 710 a tool in which a peg-shaped Abd Wegabêt is coupled to a handle by means of a hinge connection. The tool is used to disassemble a shank bit.
  • the Abdschabsacrificing is inserted through the rear opening of the bit holder and brought to the free end of the drill collar to the plant.
  • the handle can then be pivoted until it comes to rest on a support section. Now the handle can be adjusted relative to the Abdschreibabêt in the joint.
  • the resulting leverage forces are introduced via the Abdschreibabêt in the chisel, that the fuse caused by the clamping sleeve is released.
  • a new unspiked shank bit can be attached to the receiving bore and driven in with a hammer.
  • the change of a shank bit is power consuming with the known arrangement and in confined spaces not feasible safely.
  • the WO 2005/005119 which is considered to be the closest prior art, discloses a shank bit with chisel head, chisel shank and clamping sleeve which is provided with, in a circumferential groove of the chisel shank, inwardly pronounced retaining elements.
  • the drill collar carries a shaft extension at its end facing away from the bit head, that the shaft extension has a tool holder, and that the tool holder via a relative to the lateral surface of the drill collar and / or against the lateral surface of the clamping sleeve recessed distance range of the shaft extension in Mei- ⁇ elachsraum is accessible.
  • This design ensures that an actuator of a tool can be guided in the distance range.
  • a tool attachment is inserted into the tool holder, and a section of the actuator adjoining the tool attachment is guided through the clearance region.
  • the distance range allows the actuator to pass through the receiving bore with tooling inserted into the tool holder.
  • the distance range between the lateral surface of the cylindrical M submitelschaf TES, which has a first diameter and an end portion of the shaft extension is formed, which has a second diameter, wherein the second diameter is smaller than the first diameter
  • the distance range is formed in the region of the diameter offset.
  • the tool holder can be formed by a circumferential groove. This makes the shank bit easy to manufacture as a turned part.
  • the shaft extension has a retraction portion and a Ausd Wegabites, which are aligned transversely to the central longitudinal axes of the Schaftm justifyels. In this way, formed transversely to the assembly or disassembly direction undercut mold surfaces that allow a secure fit or disassembly a positive engagement of the tool.
  • a shank bit according to the invention may be such that the chisel shank and / or the shank extension are transferred via a chamfer in the tool holder.
  • a wear protection disc is mounted on the clamping sleeve, which holds the clamping sleeve in a biasing state, that the wear protection disc from the clamping sleeve in the direction of the chisel head is pushed off, and that the deported wear protection disc in a between the chisel head and the clamping sleeve formed transition portion of the drill collar is arranged and the clamping sleeve releases.
  • the prestressed with the wear protection disc clamping sleeve can be easily mounted with the tool according to the invention.
  • FIG. 1 For example, a shank bit having a bit head 10 and a bit shank 20 is shown.
  • the chisel head 10 has a receptacle into which a chisel tip 12 is inserted and soldered therein.
  • the chisel tip 12 is usually made of hard metal.
  • the chisel head 10 has, following the chisel tip 12, lateral discharge surfaces 11. At these recesses 16 worn rock material flows during the use of tools over.
  • the Ableit vom 11 are coated in the chisel tip 12 facing area with an armor 15, which is designed as a welding job. Thus, the chisel head 10 is protected in this particularly vulnerable area.
  • the chisel head 10 has a collar 13.
  • the collar forms a downwardly directed bearing surface 14.
  • a cylindrical transition portion 21 is connected.
  • a holding portion 22 which is also formed as a cylinder is formed.
  • the holding section 22 passes over a chamfer 25 in a shaft extension 20.1.
  • the shaft extension 20.1 is provided with a circumferential groove which serves as a tool holder 26. Following the groove, the shaft extension 20.1 ends with an end portion 29.
  • the end portion 29 forms at the free end of the shaft a plane contact surface, which serves as Abdrückabexcellent 28.
  • the Abdrückabterrorism 28 facing wall of the tool holder 26 forms a Einziehabites 27th
  • the cylindrical clamping sleeve 23 is formed by a rolled sheet metal section.
  • the clamping sleeve 23 has a slot 24 which extends in the longitudinal direction of the clamping sleeve 23 and as may be offset in the present case.
  • the clamping sleeve 23 carries holding elements which protrude in the direction of the drill collar. These retaining elements are not visible in the figure one.
  • the holding elements engage in a circumferential groove of the holding portion 22 a.
  • the clamping sleeve 23 is freely rotatable in the circumferential direction, but held captive in the axial direction of the shank bit.
  • the wear shield 50 has a bore into which the clamping sleeve 23 is set.
  • the inner diameter of the bore is smaller than the outer diameter of the clamping sleeve 23 in its relaxed state.
  • the wear plate 50 is designed as a rotating part.
  • the wear shield 50 has a circumferential wall 52 which defines a cup 53.
  • a projection 51 is formed in the form of a chamfer.
  • the wear protection disk 50 can be moved in the axial direction of the shank bit to the chisel head 10. When it comes into the region of the transition section 21, the wear plate 50 releases the clamping sleeve 23 so that it can jump open radially.
  • the shank bit may be mounted in a bit holder 31 of a bit holder 30, which is a bore. This can be done with the aid of a tool.
  • the tool has an actuator 40 which forms a receptacle between a shoulder 42 and a claw 41.
  • the claw 41 engages the tool holder 26 Schaftm administratels, while the shoulder 42 rests against the Ausdrückabêt 28.
  • the actuator 40 of the tool is guided through the receiving bore 31 of the bit holder 30 designed as a through bore.
  • the shoulder 42 and the claw 41 are connected to a bridge portion 44, the bridge portion 44 is designed so that it can be guided between the inner wall of the bit holder 31 and the end portion 29.
  • the end portion 29 relative to the lateral surface of the holding portion 22 (drill collar) and set back relative to the lateral surface of the clamping sleeve 23, since it has a smaller diameter than the holding portion 22 and the clamping sleeve 23.
  • the tool holder 26 is accessible past the end section 29 in the axial direction of the shank bit. In this way, the shank bit with the actuator 40 can be pulled through the receiving bore 31 therethrough.
  • the clamping sleeve 23 meets a chamfer 43 of the chisel holder 30, which rotates about the bit holder 31.
  • the clamping sleeve 23 is then compressed radially inward on the receiving bore 31 or the chamfer 43.
  • the wear protection disk 50 then strikes a contact surface 32 of the bit holder 30.
  • the wear protection disk 50 shifts in the direction of the bit head 10 until it reaches the region of the transitional portion 21 and, as described above, releases the clamping sleeve 23.
  • the radially aufspringende clamping sleeve 23 then clamped to the inner wall of the bit holder 31. In this position, the collar 13 comes in the cup 53 of the wear plate 50 to lie.
  • the actuator 40 When the shank bit has reached its wear limit, it can be removed again from the bit holder 30 with the tool.
  • the actuator 40 is inserted with its claw 41 in the tool holder 26. Since in this state, the shoulder 42 abuts against the Ausdrückabites 28, the Schaftm adoptedel can be pushed out of the receiving bore 31 under the action of the actuator 40.
  • the shank extension 20.1 is held outside the bit holder 31.
  • the bit holder 31 is designed as a through hole. The shank extension 20.1 then protrudes beyond the bore outlet facing away from the chisel head 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Knives (AREA)
  • Earth Drilling (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Drilling Tools (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Claims (10)

  1. Ciseau à ébaucher équipé d'une tête de ciseau (10) et d'un manche de ciseau (20), le manche de ciseau (20) supportant une douille de serrage (23) dans laquelle le manche de ciseau (20) est maintenu de façon imperdable en direction de son axe longitudinal et de façon à pouvoir tourner librement autour de son axe longitudinal ;
    la douille de serrage (23) supportant des éléments d'arrêt s'emboîtant dans une rainure circonférentielle d'une section d'arrêt (22) du manche de ciseau (20), faisant que la douille de serrage est maintenue de façon à pouvoir tourner librement tout en restant imperdable dans la direction de l'axe du ciseau à ébaucher ;
    caractérisé en ce que :
    le manche de ciseau (20) supporte, au niveau de son extrémité opposée à la tête de ciseau (10), un prolongement de manche (20.1) ;
    le prolongement de manche (20.1) comporte un logement d'outil (26) ; et
    le logement d'outil (26) est accessible dans la direction de l'axe du ciseau via une zone d'entretoise du prolongement de manche (20.1) reculée par rapport à la surface d'enveloppe du manche de ciseau (20) et/ou par rapport à la surface d'enveloppe de la douille de serrage (23).
  2. Ciseau à ébaucher selon la revendication 1, caractérisé en ce que la zone d'entretoise située entre la surface d'enveloppe du manche de ciseau (20) cylindrique a un premier diamètre (D1) et est constituée d'une section d'extrémité (29) du prolongement de manche (20.1) de deuxième diamètre (d1), le deuxième diamètre (d1) étant inférieur au premier diamètre (D1).
  3. Ciseau à ébaucher selon la revendication 2, caractérisé en ce que :
    les axes centraux longitudinaux du manche de ciseau (20) et de la section d'extrémité (29) sont alignés ; et
    la zone d'entretoise est constituée par l'espace annulaire formé entre le premier et le deuxième diamètre (D1 et d1).
  4. Ciseau à ébaucher selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le logement d'outil (26) est constitué par une rainure circonférentielle.
  5. Ciseau à ébaucher selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le prolongement de manche (20.1) comporte une section rentrable (27) et une section sortable par pression (28) alignées transversalement par rapport à l'axe central longitudinal du ciseau à ébaucher.
  6. Ciseau à ébaucher selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le manche de ciseau (20) et/ou le prolongement de manche (20.1) sont guidés dans le logement d'outil (25) via un chanfrein (25).
  7. Ciseau à ébaucher selon l'une quelconque des revendications 1 à 6, caractérisé en ce que :
    un disque antiusure (50) est tiré sur la douille de serrage (23), ledit disque maintenant la douille de serrage (23) dans un état précontraint ;
    le disque antiusure (50) pouvant être tiré par la douille de serrage (23) en direction de la tête de ciseau (10) ;
    le disque antiusure (50) tiré est disposé dans une section de transition (21) du manche de ciseau (20) formée entre la tête de ciseau (10) et la douille de serrage (23), libérant ainsi la douille de serrage (23).
  8. Ciseau à ébaucher selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la tête de ciseau (10) comporte des surfaces déflectrices (11) dans le raccord avec la pointe du ciseau (12), lesdites zones étant recouvertes d'une cuirasse (15) réalisée par application de soudure dans la zone orientée vers la pointe du ciseau (12).
  9. Ciseau à ébaucher selon l'une quelconque des revendications 1 à 8, caractérisé en ce que dans la zone de transition de la tête de ciseau (10) en direction du manche de ciseau (20), la tête de ciseau (10) comporte un élément d'union (13) au niveau duquel une section de transition (21) cylindrique menant au logement d'un disque antiusure (50) est rattachée.
  10. Ciseau à ébaucher selon l'une quelconque des revendications 1 à 9, caractérisé en ce que :
    il supporte un disque antiusure (50) présentant une paroi circonférentielle (52) délimitant un godet (53) ; et
    un élément d'union (13) de la tête de ciseau (10) est logé dans le godet (53).
EP08773352A 2007-07-02 2008-05-30 Ciseau à ébaucher Active EP2160274B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007030658A DE102007030658A1 (de) 2007-07-02 2007-07-02 Schaftmeißel
PCT/EP2008/004303 WO2009003561A1 (fr) 2007-07-02 2008-05-30 Ciseau à ébaucher

Publications (2)

Publication Number Publication Date
EP2160274A1 EP2160274A1 (fr) 2010-03-10
EP2160274B1 true EP2160274B1 (fr) 2011-12-21

Family

ID=39720064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08773352A Active EP2160274B1 (fr) 2007-07-02 2008-05-30 Ciseau à ébaucher

Country Status (12)

Country Link
US (1) US8550569B2 (fr)
EP (1) EP2160274B1 (fr)
JP (1) JP5496088B2 (fr)
CN (1) CN101687341B (fr)
AT (1) ATE537951T1 (fr)
AU (1) AU2008271684B2 (fr)
DE (1) DE102007030658A1 (fr)
ES (1) ES2379849T3 (fr)
RU (1) RU2434999C2 (fr)
TW (2) TWI413728B (fr)
WO (1) WO2009003561A1 (fr)
ZA (1) ZA200909031B (fr)

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* Cited by examiner, † Cited by third party
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DE202007010047U1 (de) * 2007-07-02 2007-09-27 Wirtgen Gmbh Werkzeug
DE102009049780B4 (de) * 2009-10-19 2016-02-18 Betek Gmbh & Co. Kg Meißel, insbesondere Rundschaftmeißel
AU2014202477B2 (en) * 2009-10-19 2017-02-02 Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg Bit, in particular a round shaft bit
DE102011054386A1 (de) 2011-10-11 2013-04-11 Betek Gmbh & Co. Kg Sicherungselement für einen Schaftmeißel
DE102011054384A1 (de) * 2011-10-11 2013-04-11 Betek Gmbh & Co. Kg Meißelhalter
DE102011054393A1 (de) 2011-10-11 2013-04-11 Betek Gmbh & Co. Kg Schaftmeißel
WO2013053811A2 (fr) 2011-10-11 2013-04-18 Betek Gmbh & Co. Kg Système d'outil
DE102014014094A1 (de) * 2013-10-01 2015-04-02 Bomag Gmbh Meißeleinrichtung und verschleißgeschützter Meißel für eine Bodenfräsmaschine
DE102016108808A1 (de) * 2016-05-12 2017-11-16 Betek Gmbh & Co. Kg Meißel mit einem Stützelement mit einem Zentrieransatz
USD839936S1 (en) * 2016-05-24 2019-02-05 Kennametal Inc. Cutting insert and bolster
US10294786B2 (en) 2016-05-24 2019-05-21 Kennametal Inc. Rotatable cutting tool with cutting insert and bolster
RU2655486C2 (ru) * 2016-07-04 2018-05-28 Общество с ограниченной ответственностью "Горный инструмент" Тангенциальный поворотный резец
DE102018109150A1 (de) * 2018-04-17 2019-10-17 Betek Gmbh & Co. Kg Fräsmeißel
AU201816544S (en) 2018-08-01 2018-11-27 Betek Gmbh & Co Kg A chisel

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US4201421A (en) * 1978-09-20 1980-05-06 Besten Leroy E Den Mining machine bit and mounting thereof
US4337980A (en) 1979-05-21 1982-07-06 The Cincinnati Mine Machinery Company Wedge arrangements and related means for mounting means, base members, and bits, and combinations thereof, for mining, road working, or earth moving machinery
US4755003A (en) * 1986-12-17 1988-07-05 Pinkerton Cletis P Cutter bit assembly with resilient bit retainer
FR2632353A1 (fr) * 1988-06-02 1989-12-08 Combustible Nucleaire Outil pour machine d'abattage minier comportant une piece abrasive diamantee
JPH0752066A (ja) * 1993-08-06 1995-02-28 Kansai Kogu Seisakusho:Kk ブレーカ用チゼル
AT406503B (de) 1995-12-21 2000-06-26 Voest Alpine Bergtechnik Meisselanordnung für einen rundschaftmeissel
GB2328961B (en) * 1997-09-06 2002-01-09 Hydra Tools Internat Ltd Point attack tooling system for mineral winning
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JP2007515367A (ja) * 2003-11-29 2007-06-14 クロス マッチ テクノロジーズ， インコーポレイテッド ポリマーセラミックスリップ、およびそこからのセラミック素地の製造方法
DE102005001535B3 (de) * 2005-01-13 2006-08-31 Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg Befestigungsanordnung für einen Meißel und Demontagewerkzeug
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DE102007019357B4 (de) 2007-04-23 2010-03-18 Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg Schneideinsatz für eine Baumstumpffräse
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DE102008025071A1 (de) 2008-05-26 2009-12-03 Wirtgen Gmbh Werkzeug zur Demontage eines Meißels

Also Published As

Publication number Publication date
ATE537951T1 (de) 2012-01-15
JP2010531740A (ja) 2010-09-30
US20100194177A1 (en) 2010-08-05
TWI577880B (zh) 2017-04-11
AU2008271684B2 (en) 2012-02-23
ZA200909031B (en) 2010-09-29
ES2379849T3 (es) 2012-05-04
RU2434999C2 (ru) 2011-11-27
RU2010103271A (ru) 2011-08-10
JP5496088B2 (ja) 2014-05-21
EP2160274A1 (fr) 2010-03-10
AU2008271684A2 (en) 2010-01-28
TW201402933A (zh) 2014-01-16
DE102007030658A1 (de) 2009-01-15
US8550569B2 (en) 2013-10-08
AU2008271684A1 (en) 2009-01-08
WO2009003561A1 (fr) 2009-01-08
TW200909665A (en) 2009-03-01
CN101687341B (zh) 2013-06-19
CN101687341A (zh) 2010-03-31
TWI413728B (zh) 2013-11-01

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