EP0639437A1 - Trépan racleur pour une machine de fraisage - Google Patents

Trépan racleur pour une machine de fraisage Download PDF

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Publication number
EP0639437A1
EP0639437A1 EP93108645A EP93108645A EP0639437A1 EP 0639437 A1 EP0639437 A1 EP 0639437A1 EP 93108645 A EP93108645 A EP 93108645A EP 93108645 A EP93108645 A EP 93108645A EP 0639437 A1 EP0639437 A1 EP 0639437A1
Authority
EP
European Patent Office
Prior art keywords
milling
arrangement according
wear
wear washer
bit arrangement
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.)
Withdrawn
Application number
EP93108645A
Other languages
German (de)
English (en)
Inventor
Reinhard Wirtgen
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
Application filed by Wirtgen GmbH filed Critical Wirtgen GmbH
Publication of EP0639437A1 publication Critical patent/EP0639437A1/fr
Withdrawn legal-status Critical Current

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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
    • E21C35/19—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 milling cutter arrangement for road milling machines.
  • the milling chisels are subject to extraordinary wear and abrasion due to the material to be milled.
  • So-called round shank chisels are usually used, which consist of a milling cutter head equipped with hard metal and a round chisel shank that sits in a bore in the milling cutter holder and enables the milling cutter to rotate about its longitudinal axis during milling operation.
  • a stop surface is provided on the cutter bit holder for supporting the bit head. This cutting surface is subject to extraordinary wear due to the rotating milling chisel and the rock powder.
  • This object according to the invention is achieved with a milling cutter arrangement of the type defined above, which is characterized by a wear washer arranged between the stop surface of the cutter holder and the cutter head.
  • Such a wear washer which can be made of a less hard material, reduces the wear of the abutment surface on the bit holder due to the rotation of the milling cutter, because a certain amount of this rotation is absorbed by the wear washer. This amount is greater the slower the wear plate is rotated by the rotating bit head.
  • the wear disk is therefore expediently connected to the bit holder in a form-fitting manner. In this way it is achieved that there is no more friction between the chisel holder on the one hand and the wear disc on the other hand, this cleaning is only taken up by the milling cutter head and the wear disc so that the stop surface remains largely free of wear.
  • the wear washer is designed as a toothed wear plate, as is used, for example, in screw connections in order to prevent the screws from loosening.
  • the wear plate is connected to the chisel holder by means of a locking pin which can be inserted into an opening in the chisel holder.
  • the wear disk interacts with the bit holder by means of a shaped element running in the radial direction according to the tongue and groove principle, whereby rotation of the wear disk, that is to say a relative movement between the wear disk and the bit holder, is also avoided.
  • the wear washer is finally formed as a stepped washer, which is press-fit in the bore of the bit holder and is thus prevented from moving relative to the bit holder.
  • the wear plate is non-positively connected to the chisel holder and is therefore also prevented from moving relative to the chisel holder.
  • Such a frictional connection can be achieved in different ways.
  • the wear plate is provided with an internal and external conical contact and is therefore also prevented from moving relative to the bit holder.
  • the wear washer has a large contact diameter with respect to the bit holder and a small contact diameter with respect to the bit head.
  • the abrasion takes place practically exclusively between the milling cutter and the wear disc due to the rotating milling cutter. This extends the service life of the chisel holder by a multiple, it is only necessary to replace the milling chisel and the wear plate, which can be done relatively quickly. The economy of the milling machine is thus significantly increased by the new milling bit arrangement according to the invention.
  • the clamping sleeve for arranging the wear washer, with which the shaft of the milling bit is held in the bore of the bit holder. It is a sleeve which surrounds the shaft and is fully or partially slotted in the longitudinal direction, which is usually made of spring steel and which is pre-tensioned in the bore of the bit holder and prevents the milling bit from falling out of the bore of the bit holder.
  • the sleeve Since the sleeve is held in the bore of the chisel holder by the spring force, it is fixed and does not turn when the milling cutter rotates around its axis during operation.
  • the wear washer provided between the stop face of the bit holder and the bit head can advantageously be connected to the clamping sleeve, so that the wear washer is fixed in relation to the bit holder and thus there is no abrasion between the wear washer and the bit holder.
  • the wear plate is therefore locked on the clamping sleeve of the chisel shank.
  • the wear washer is connected to the adapter sleeve, both a non-positive and a positive connection being possible.
  • the wear plate is welded or riveted to the adapter sleeve and, according to a particularly preferred embodiment, the wear plate is formed in one piece with the adapter sleeve, that is to say it is made of the same material.
  • FIG. 1 shows an embodiment according to the invention in which a toothed wear washer 8 is provided between the bit head and the stop surface 7 of the bit holder.
  • the wear plate 8 is locked by means of a locking pin 9 as a shaped element on the bit holder.
  • a shaped element 10 running in the radial direction is provided on the wear plate 8 according to the tongue and groove principle, thereby preventing the wear plate from rotating with respect to the bit holder.
  • Figure 4 shows a stripped wear plate 8 with a press fit in the opening of the bit holder.
  • Figure 5 shows a conical contact of the wear plate 8 on the inside.
  • Figure 6 shows a conical contact of the wear washer 8 on the outside.
  • Figure 7 shows a conical contact of the wear washer 8 on the inside and outside.
  • FIG. 8 shows an embodiment in which a large contact diameter is provided between the wear disk and the chisel holder
  • FIG. 9 shows an embodiment in which a small contact diameter is provided between the chisel 2 and the wear disk 8.
  • the milling cutter 2 provided with a hard metal tip 1 is fastened with its round shaft 3 in the hole 4 of a milling cutter holder 5 which is screwed onto the milling drum of a road milling machine.
  • the differently designed wear disks 8 are arranged between the milling cutter head 6 and the stop surface 7.
  • Figures 1 to 4 are a form-fitting arrangement of these wear disks, while in Figures 5 to 9 the wear disks are non-positively arranged.
  • FIGS. 10 to 15 show other embodiments of the present invention in which the wear washer is locked on the clamping sleeve of the chisel shaft.
  • the wear plate 8 is non-positively connected to the clamping sleeve 9 and since the latter is firmly seated in the opening of the bit holder due to its spring tension, the wear plate 8 is also locked in relation to the bit holder.
  • the sleeve 9 extends through the wear plate 8 to the chisel collar.
  • FIGS. 11 to 14 show other embodiments of the invention, in which the wear washer is each positively connected to the clamping sleeve 9.
  • the wear washers are provided in the wear washers, respectively on the other hand, the sleeves each have an additional stamping, which, in conjunction with the wear washer 8, prevent the latter from rotating.
  • FIG. 15 shows a particularly preferred embodiment of the invention, in which the wear plate 8 and the clamping sleeve 9 are formed in one piece. After the wear disc has worn out, it is replaced together with the molded adapter sleeve.

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)
EP93108645A 1993-03-01 1993-05-28 Trépan racleur pour une machine de fraisage Withdrawn EP0639437A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934306206 DE4306206A1 (de) 1993-03-01 1993-03-01 Fräsmeißelanordnung für Straßenfräsmaschinen
DE4306206 1993-03-01

Publications (1)

Publication Number Publication Date
EP0639437A1 true EP0639437A1 (fr) 1995-02-22

Family

ID=6481565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93108645A Withdrawn EP0639437A1 (fr) 1993-03-01 1993-05-28 Trépan racleur pour une machine de fraisage

Country Status (3)

Country Link
EP (1) EP0639437A1 (fr)
JP (1) JPH06248611A (fr)
DE (1) DE4306206A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630653C1 (de) * 1996-07-30 1998-04-02 Betek Bergbau & Hartmetall Verschleißarme Abstürzung eines drehbar in einem Meißelhalter gelagerten Meißels
DE19720635A1 (de) * 1997-05-16 1998-11-19 Betek Bergbau & Hartmetall Schaftmeißel
DE19922206A1 (de) * 1999-05-14 2000-11-23 Betek Bergbau & Hartmetall Werkzeug für eine Schrämm-, Bergbau- oder Straßenfräsmaschine
DE19922320A1 (de) * 1999-05-14 2000-11-23 Betek Bergbau & Hartmetall Werkzeug für eine Schräm-, Bergbau- oder Straßenfräsmaschine
EP1350736A1 (fr) 1998-10-09 2003-10-08 Wilhelm A. Keller Cartouche à paroi mince pour dispositif distributeur réutilisable
US6962395B2 (en) 2004-02-06 2005-11-08 Kennametal Inc. Non-rotatable protective member, cutting tool using the protective member, and cutting tool assembly using the protective member
US7380888B2 (en) 2001-04-19 2008-06-03 Kennametal Inc. Rotatable cutting tool having retainer with dimples
DE102010026106A1 (de) * 2010-07-05 2012-01-05 Bomag Gmbh Fräsmeißelordnung mit Verschleißscheibe
US8678516B2 (en) 2011-03-04 2014-03-25 Sandvik Intellectual Property Ab Polygonal shield washer
CN106968158A (zh) * 2016-01-13 2017-07-21 卡特彼勒路面机械公司 铣削刀具夹持器
WO2021243892A1 (fr) * 2020-05-31 2021-12-09 苏州五元素机械制造有限公司 Burin

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPM815494A0 (en) * 1994-09-15 1994-10-13 Cutincoal Pty Limited Improvements in mounting pick holders in cutter heads of mining machines
DE29504676U1 (de) * 1995-03-18 1995-07-13 Boart Hwf Gmbh Co Kg Drehsymmetrisches Werkzeug
DE10044369C2 (de) 2000-09-08 2003-03-27 Michael Steinbrecher Schnellwechselhaltersystem für Werkzeuge auf Walzen
DE102005003734B3 (de) * 2005-01-26 2006-02-16 Wirtgen Gmbh Meißelhaltersystem
US20070257545A1 (en) * 2006-05-08 2007-11-08 Sandvik Intelectual Property Ab Cutting tool and method of assembling the cutting tool

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US103602A (en) * 1870-05-31 Improvement in apparatus for evaporating liquids
US4201421A (en) * 1978-09-20 1980-05-06 Besten Leroy E Den Mining machine bit and mounting thereof
US4489986A (en) * 1982-11-01 1984-12-25 Dziak William A Wear collar device for rotatable cutter bit
DE3439491A1 (de) * 1984-10-27 1986-04-30 Gerd 5303 Bornheim Elfgen Rundschaftmeissel
DE3529266A1 (de) * 1985-08-16 1987-03-05 Bentz Hans Joachim Rundschaftmeissel
US4844550A (en) * 1987-07-21 1989-07-04 Beebe Donald E Wear protector for tooth brackets on roadway surface cutting machines
DE9213528U1 (fr) * 1992-10-07 1993-01-07 Maloe Predprijatie "Pigma", Moskau/Moskva, Ru

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US103602A (en) * 1870-05-31 Improvement in apparatus for evaporating liquids
US4201421A (en) * 1978-09-20 1980-05-06 Besten Leroy E Den Mining machine bit and mounting thereof
US4489986A (en) * 1982-11-01 1984-12-25 Dziak William A Wear collar device for rotatable cutter bit
DE3439491A1 (de) * 1984-10-27 1986-04-30 Gerd 5303 Bornheim Elfgen Rundschaftmeissel
DE3529266A1 (de) * 1985-08-16 1987-03-05 Bentz Hans Joachim Rundschaftmeissel
US4844550A (en) * 1987-07-21 1989-07-04 Beebe Donald E Wear protector for tooth brackets on roadway surface cutting machines
DE9213528U1 (fr) * 1992-10-07 1993-01-07 Maloe Predprijatie "Pigma", Moskau/Moskva, Ru

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19630653C1 (de) * 1996-07-30 1998-04-02 Betek Bergbau & Hartmetall Verschleißarme Abstürzung eines drehbar in einem Meißelhalter gelagerten Meißels
DE19720635A1 (de) * 1997-05-16 1998-11-19 Betek Bergbau & Hartmetall Schaftmeißel
DE19720635C2 (de) * 1997-05-16 1999-05-12 Betek Bergbau & Hartmetall Schaftmeißel
EP1350736A1 (fr) 1998-10-09 2003-10-08 Wilhelm A. Keller Cartouche à paroi mince pour dispositif distributeur réutilisable
DE19922206A1 (de) * 1999-05-14 2000-11-23 Betek Bergbau & Hartmetall Werkzeug für eine Schrämm-, Bergbau- oder Straßenfräsmaschine
DE19922320A1 (de) * 1999-05-14 2000-11-23 Betek Bergbau & Hartmetall Werkzeug für eine Schräm-, Bergbau- oder Straßenfräsmaschine
DE19922206C2 (de) * 1999-05-14 2002-02-28 Betek Bergbau & Hartmetall Werkzeug für eine Schräm-, Bergbau- oder Straßenfräsmaschine
DE19922320C2 (de) * 1999-05-14 2002-03-07 Betek Bergbau & Hartmetall Werkzeug für eine Schräm-, Bergbau- oder Straßenfräsmaschine
DE19964291C2 (de) * 1999-05-14 2003-03-13 Betek Bergbau & Hartmetall Werkzeug für eine Schräm-, Bergbau- oder Straßenfräsmaschine
DE19922320C5 (de) * 1999-05-14 2004-11-25 Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg Werkzeug für eine Schräm-, Bergbau- oder Straßenfräsmaschine
US7380888B2 (en) 2001-04-19 2008-06-03 Kennametal Inc. Rotatable cutting tool having retainer with dimples
US6962395B2 (en) 2004-02-06 2005-11-08 Kennametal Inc. Non-rotatable protective member, cutting tool using the protective member, and cutting tool assembly using the protective member
DE102010026106A1 (de) * 2010-07-05 2012-01-05 Bomag Gmbh Fräsmeißelordnung mit Verschleißscheibe
CN102310488A (zh) * 2010-07-05 2012-01-11 宝马格有限公司 具有磨损盘的切削工具配置
US8770669B2 (en) 2010-07-05 2014-07-08 Bomag Gmbh Cutting tool configuration having wear disc
EP2405098A3 (fr) * 2010-07-05 2018-01-03 BOMAG GmbH Trépan racleur doté d'un disque d'usure
US8678516B2 (en) 2011-03-04 2014-03-25 Sandvik Intellectual Property Ab Polygonal shield washer
CN106968158A (zh) * 2016-01-13 2017-07-21 卡特彼勒路面机械公司 铣削刀具夹持器
CN106968158B (zh) * 2016-01-13 2021-04-06 卡特彼勒路面机械公司 铣削刀具夹持器
WO2021243892A1 (fr) * 2020-05-31 2021-12-09 苏州五元素机械制造有限公司 Burin

Also Published As

Publication number Publication date
JPH06248611A (ja) 1994-09-06
DE4306206A1 (de) 1994-09-08

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