EP1943409B1 - Rundschaftmeissel mit meisselhalter - Google Patents

Rundschaftmeissel mit meisselhalter Download PDF

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Publication number
EP1943409B1
EP1943409B1 EP06762196.1A EP06762196A EP1943409B1 EP 1943409 B1 EP1943409 B1 EP 1943409B1 EP 06762196 A EP06762196 A EP 06762196A EP 1943409 B1 EP1943409 B1 EP 1943409B1
Authority
EP
European Patent Office
Prior art keywords
clamping sleeve
shank
round
pick
holding elements
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
EP06762196.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1943409A1 (de
Inventor
Karl Kammerer
Bernhard Mossmann
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 EP1943409A1 publication Critical patent/EP1943409A1/de
Application granted granted Critical
Publication of EP1943409B1 publication Critical patent/EP1943409B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/895—Having axial, core-receiving central portion

Definitions

  • the invention relates to a round shank bit having a shank which is held by means of a clamping sleeve in the bore of the chisel holder, wherein the shank is rotatably held in the clamping sleeve, wherein the clamping sleeve is provided with one or more inwardly projecting holding elements, which in one in the shaft engage the round shank introduced circumferential groove, so that the clamping sleeve is held immovably in the axial direction on the shank of the round shank chisel.
  • the axial position of the clamping sleeve on the shank of the chisel holder is important so that the clamping sleeve has the smallest possible axial play.
  • the shank of the round shank chisel in the clamping sleeve must be centered by the holding elements so that the shank is guided freely rotatable in the clamping sleeve.
  • a round shank bit with chisel holder of the type mentioned is from the EP 0 264 015 A1 and the DE 37 12 427 A1 known.
  • this known round shank chiselling both a circumferential circumferential groove are arranged in the shank of the round shank chisel and the stamped and / or depressed holding elements of the clamping sleeve in the end region of the shank or the clamping sleeve.
  • the axial position of the clamping sleeve on the shank of the round shank chisel is thus well secured, but when applying the clamping sleeve must be taken to the correct position of the end faces of the clamping sleeve.
  • this arrangement of circumferential groove and retaining elements does not contribute to an improved centering of the shank of the round shank chisel in the clamping sleeve.
  • the outer edges are chamfered at the two end faces of the clamping sleeve, then the introduction of the round shank with applied on the shank clamping sleeve is facilitated in the bore of the chisel holder, wherein according to one embodiment, the bevelled outer edges of the end faces of the clamping sleeve At an angle of about 30 ° to 60 ° to the outer wall of the clamping sleeve stand to allow a reliable joining of the clamping sleeve in a corresponding receptacle of a chisel holder.
  • the invention provides that the holding elements between two transverse to the longitudinal axis of the clamping sleeve directed punching edges are divided and stamped inwardly and / or pressed that the punched edges on a Part of the circumference of the clamping sleeve extend and each have a distance which is equal to or smaller than the width of the circumferential groove in the shank of the round shank chisel.
  • the holding elements facing the convex groove bottom of the circumferential groove form a coaxial, concave centering.
  • the design of the holding elements is preferably provided and designed so that the clamping sleeve has three holding elements, of which a holding element facing the slot of the clamping sleeve, and that the other two holding elements relative to the one holding element on the circumference of the clamping sleeve each offset by approximately 100 ° are and that the width of the circumferential groove and thus the associated width of the holding elements is selected about 1/9 to 1/3 of the axial dimension of the clamping sleeve.
  • the concave centering of the holding elements extend, for example over an angular range of about 30 ° to 50 ° of the circumference of the clamping sleeve to obtain a stable storage.
  • the stamped and / or indented retaining elements no sharp edges that could affect the free rotation of the shank of the round shank chisel, provides a design of the holding elements that the ends of the concave centering of the holding elements via a convex curve, in a transitional section and this go over a concave curve in the inner wall of the clamping sleeve.
  • the chisel tip facing the front side of the clamping sleeve at a distance from the conical insertion section of the hole in the bit holder is, who receives a conical heel of the chisel head or a centering neck of a arranged between chisel holder and chisel head wear plate, then just this face of the clamping sleeve is exposed.
  • the clamping sleeve 10 after Fig. 1 to 3 carries the longitudinal slot 11, in which the outer edges 14 and 15 of the end faces 11 and 13 are chamfered.
  • the bevelled outer edges 14 and 15 are at an angle of approximately 30 ° to the outer wall of the clamping sleeve 10 so that they do not interfere with the insertion into a conical insertion portion 42 of a bore 41 of a chisel holder 40 (see FIG. 4 ).
  • the outer edges 14 and 15 are chamfered at both end faces 12 and 13, since the clamping sleeve 10 can be facing the insertion portion 42 with each of the two end faces 12 and 13.
  • the holding elements 16, 17 and 18 are arranged in the region of the central transverse plane 38 of the clamping sleeve 10 and formed symmetrically to this.
  • a circumferential groove 39 is introduced, whose arrangement is such that the clamping sleeve 10 can be fixed in one of the two axial positions on the shaft 31, in which the holding elements 16, 17 and 18 in the Engage circumferential groove 39.
  • the clamping sleeve 20 is formed mirror-symmetrical to the median transverse plane 38, it can be set rotated by 180 ° on the shaft 31. This facilitates the application, since no longer has to be paid attention to the correct position to the shaft 31, as in the known round shank chisels.
  • the new clamping sleeve 10 can therefore occupy one of two identical positions on the shaft 31.
  • the clamping sleeve 10 has three distributed over the circumference holding elements 16, 17 and 18.
  • the one holding element 16 lies opposite the slot 11.
  • the two other holding elements 17 and 18 are arranged offset at an angle X of about 100 ° relative to this one holding element 16 on the circumference of the clamping sleeve 10.
  • the holding elements 16, 17 and 18 are divided by two parallel punching edges 20 and 21, which are directed transversely to the longitudinal axis 19 of the clamping sleeve 10 and extend over an angular range of 50 ° to 60 ° of the circumference of the clamping sleeve 10.
  • the stamped and / or indented holding elements 16, 17 and 18 form the groove bottom of the circumferential groove 39 facing a coaxial, concave centering portion 22, which comprises approximately an angular range of 30 ° to 50 °.
  • the centering portions 22 of the holding elements 16, 17 and 18 go over with their ends via a convex curve 26, a transition section and a concave curve 25 in the inner wall of the clamping sleeve 10.
  • the concave center sections opposite the concave centering sections 22 merge at the two ends via a concave curve 24, a transition section and a convex curve 23 into the outer wall of the clamping sleeve 10.
  • the holding elements 16, 17 and 18 can be stamped and / or indented to the extent that they are in the clamped state of the clamping sleeve 10 in the bore 41 of the bit holder 40 with the concave centering 22 at a short distance to the convex groove bottom of the circumferential groove 39 ,
  • the depth of the circumferential groove 39 is interpreted accordingly and may also be such that the convex outer portions of the holding elements 16, 17 and 18 are spaced from the inner wall of the clamping sleeve 10, as in the cross section Fig. 3 can be seen.
  • the chisel head 36 may be supported on a wear plate, which bears against the front side of the chisel holder 40 and projects with a centering projection into the conical insertion section 42 of the chisel holder 40.
  • the centering shoulder of the wear plate then does not come into contact with the facing end face of the clamping sleeve 10 applied to the shank 31 of the round shank bit 30 and can not impair the rotational mobility of the shank 31.

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)
  • Gripping On Spindles (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
EP06762196.1A 2005-10-27 2006-06-27 Rundschaftmeissel mit meisselhalter Active EP1943409B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005051450A DE102005051450B4 (de) 2005-10-27 2005-10-27 Rundschaftmeißel und Meißelhalter
PCT/EP2006/006157 WO2007048455A1 (de) 2005-10-27 2006-06-27 Rundschaftmeissel mit meisselhalter

Publications (2)

Publication Number Publication Date
EP1943409A1 EP1943409A1 (de) 2008-07-16
EP1943409B1 true EP1943409B1 (de) 2014-06-11

Family

ID=36888913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06762196.1A Active EP1943409B1 (de) 2005-10-27 2006-06-27 Rundschaftmeissel mit meisselhalter

Country Status (10)

Country Link
US (1) US7922256B2 (ja)
EP (1) EP1943409B1 (ja)
JP (1) JP4824761B2 (ja)
KR (1) KR101004703B1 (ja)
CN (1) CN101300404B (ja)
AU (1) AU2006308264B2 (ja)
DE (1) DE102005051450B4 (ja)
RU (1) RU2375572C1 (ja)
TW (1) TWI343446B (ja)
WO (1) WO2007048455A1 (ja)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010021582A1 (en) * 2008-08-18 2010-02-25 Sandvik Intellectual Property Ab Full sleeve retainer for step-shank of tool
BE1018585A3 (nl) * 2009-07-06 2011-04-05 Dredging Int Snijkop voor het baggeren van grond, snijkopzuiger voorzien van een dergelijke snijkop, en gebruik van de snijkop voor het baggeren van grond.
DE102009049780B4 (de) 2009-10-19 2016-02-18 Betek Gmbh & Co. Kg Meißel, insbesondere Rundschaftmeißel
CN102200012A (zh) * 2010-03-26 2011-09-28 钴碳化钨硬质合金公司 用于可旋转切削刀头的夹持件
KR101753305B1 (ko) 2010-12-03 2017-07-03 비르트겐 게엠베하 치즐 홀더, 및 치즐 홀더와 베이스부를 구비하는 치즐 홀더 시스템
EP2646652B1 (de) 2010-12-03 2020-10-14 Wirtgen GmbH Meisselhalter
DE102010061019A1 (de) 2010-12-03 2012-06-06 Betek Gmbh & Co. Kg Meißelhalter und Werkzeugunterteil für einen Meißelhalter
CN202431272U (zh) 2010-12-03 2012-09-12 维特根有限公司 刀架
KR101753303B1 (ko) 2010-12-03 2017-07-03 비르트겐 게엠베하 치즐 홀더, 및 치즐 홀더와 베이스부를 구비하는 치즐 홀더 시스템
DE102011000314A1 (de) * 2011-01-25 2012-07-26 Gerd Elfgen Verfahren zur Demontage eines Rundschaftmeißels, Rundschaftmeißel sowie Ausziehwerkzeug
USD667855S1 (en) 2011-04-11 2012-09-25 Betek Gmbh & Co. Kg Base for a chisel holder
USD667856S1 (en) 2011-04-11 2012-09-25 Betek Gmbh & Co. Kg Chisel holder
DE102011051525A1 (de) 2011-07-04 2013-01-10 Wirtgen Gmbh Meißelhalter für eine Bodenbearbeitungsmaschine
USD671578S1 (en) 2011-07-04 2012-11-27 Wirtgen Gmbh Chisel holder
DE102015002712A1 (de) * 2014-03-10 2015-09-10 Bomag Gmbh Rundschaftmeißelanordnung, Sicherungsring für eine Rundschaftmeißelanordnung, Set mit einer Spannhülse und einem Sicherungsring und Verfahren zum Sichern eines Rundschaftmeißels in einem Meißelhalter
AU201816544S (en) 2018-08-01 2018-11-27 Betek Gmbh & Co Kg A chisel
US11180991B2 (en) 2020-03-12 2021-11-23 Caterpillar Paving Products Inc. Hammerless cutting bit retention system
US11719098B2 (en) 2021-09-10 2023-08-08 Kennametal Inc. Tool retainer
US11898446B1 (en) 2022-07-29 2024-02-13 Kennametal Inc. Tool retainer

Family Cites Families (19)

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US3767266A (en) * 1970-08-10 1973-10-23 Cincinnati Mine Machinery Co Resilient retaining means for connecting work tools and work tool holders
US4335921A (en) * 1977-06-06 1982-06-22 Cmi Corporation Cutting head for a paved roadway resurfacing apparatus
US4327947A (en) * 1980-06-17 1982-05-04 General Electric Company Keeper spring for connecting mining tool to work tool holder
US4684176A (en) * 1984-05-16 1987-08-04 Den Besten Leroy E Cutter bit device
US4836614A (en) * 1985-11-21 1989-06-06 Gte Products Corporation Retainer scheme for machine bit
ZA876962B (en) 1986-10-07 1988-07-27 Kennametal Inc Rotatable cutting bit
DE3712427A1 (de) * 1987-04-11 1988-10-27 Betek Bergbau & Hartmetall Rundschaftmeissel mit meisselhalter
SE461165B (sv) * 1987-06-12 1990-01-15 Hans Olav Norman Verktyg foer brytning, avverkning eller bearbetning av fasta material
US5503463A (en) * 1994-12-23 1996-04-02 Rogers Tool Works, Inc. Retainer scheme for cutting tool
DE19630653C1 (de) * 1996-07-30 1998-04-02 Betek Bergbau & Hartmetall Verschleißarme Abstürzung eines drehbar in einem Meißelhalter gelagerten Meißels
CN1240495A (zh) * 1996-12-19 2000-01-05 钴碳化钨硬质合金公司 切割刀具套筒的旋转限制系统
DE19720635C2 (de) 1997-05-16 1999-05-12 Betek Bergbau & Hartmetall Schaftmeißel
JPH11132383A (ja) * 1997-10-29 1999-05-21 Sekisui Chem Co Ltd 外環状溝付き管の成形方法
DE19803166C2 (de) * 1998-01-28 2000-05-11 Betek Bergbau & Hartmetall Rundschaftmeißel für eine Schrämmaschine oder dgl.
US6786557B2 (en) * 2000-12-20 2004-09-07 Kennametal Inc. Protective wear sleeve having tapered lock and retainer
US7380888B2 (en) * 2001-04-19 2008-06-03 Kennametal Inc. Rotatable cutting tool having retainer with dimples
US6702393B2 (en) * 2001-05-23 2004-03-09 Sandvik Rock Tools, Inc. Rotatable cutting bit and retainer sleeve therefor
US7229136B2 (en) * 2004-09-28 2007-06-12 The Sollami Company Non-rotatable wear ring and retainer sleeve for a rotatable tool
US20060125308A1 (en) * 2004-12-14 2006-06-15 The Sollami Company Wear ring and extraction device for a rotatable tool

Also Published As

Publication number Publication date
DE102005051450B4 (de) 2010-08-05
AU2006308264A1 (en) 2007-05-03
KR101004703B1 (ko) 2011-01-04
KR20080069581A (ko) 2008-07-28
EP1943409A1 (de) 2008-07-16
RU2375572C1 (ru) 2009-12-10
AU2006308264B2 (en) 2010-11-11
DE102005051450A1 (de) 2007-05-03
JP4824761B2 (ja) 2011-11-30
TW200726902A (en) 2007-07-16
US20090162159A1 (en) 2009-06-25
CN101300404B (zh) 2011-09-28
CN101300404A (zh) 2008-11-05
TWI343446B (en) 2011-06-11
US7922256B2 (en) 2011-04-12
JP2009513849A (ja) 2009-04-02
WO2007048455A1 (de) 2007-05-03

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