EP1319801B1 - Système pour échanger des porte-pics avec des vis de serrage - Google Patents

Système pour échanger des porte-pics avec des vis de serrage Download PDF

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Publication number
EP1319801B1
EP1319801B1 EP02025217A EP02025217A EP1319801B1 EP 1319801 B1 EP1319801 B1 EP 1319801B1 EP 02025217 A EP02025217 A EP 02025217A EP 02025217 A EP02025217 A EP 02025217A EP 1319801 B1 EP1319801 B1 EP 1319801B1
Authority
EP
European Patent Office
Prior art keywords
pick
holder
coating
receptacle
exchanging
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
EP02025217A
Other languages
German (de)
English (en)
Other versions
EP1319801A2 (fr
EP1319801A3 (fr
Inventor
Bernd Holl
Dr. Günter Hähn
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 EP1319801A2 publication Critical patent/EP1319801A2/fr
Publication of EP1319801A3 publication Critical patent/EP1319801A3/fr
Application granted granted Critical
Publication of EP1319801B1 publication Critical patent/EP1319801B1/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
    • E21C35/19—Means for fixing picks or holders
    • E21C35/193—Means for fixing picks or holders using bolts as main fixing elements
    • 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
    • E21C35/191—Means for fixing picks or holders for fixing holders
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/90—Fastener or fastener element composed of plural different materials
    • Y10S411/901—Core and exterior of different materials
    • Y10S411/902—Metal core
    • Y10S411/903—Resinous exterior
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/914—Coated bolt

Definitions

  • the invention relates to a chisel holder changing system with a base part with a chisel holder, into which a chisel equipped with a chisel holder is inserted, the chisel holder with a holder shaft inserted into the chisel holder shots and held by clamping screws therein and wherein the clamping screws can be screwed into a threaded receptacle of the base and are supported under tension in a clamping receptacle of the holder shank of the chisel holder.
  • Such chisel holder changing systems are used in milling of milling machines, such as road milling machines.
  • both the chisel from the bit holders and the bit holder from the bit holder shots are interchangeable to replace them in wear, damage and the like without having to remove the bit holder changing system from the milling machine (see for example GB 2071184 A).
  • the threaded parts of the screw are protected by an electrochemical mechanism with these threaded steel parts from corrosion and receive a reduced Gleitwert so that a higher clamping force / a higher tightening torque can be transmitted to the holder shank of the chisel holder, without damage in particular Fearing tool holder of the clamping screw.
  • This layer sacrifices in favor of the base material and with the layer thickness, the rate of consumption of the layer is controlled.
  • layer thicknesses of 5 .mu.m to 10 .mu.m are selected.
  • the number of fins per micron of the layer increases the barrier effect of the coated surfaces. Especially the small layer thickness allows a problem-free coating of the threaded parts and the approximately 300 ° C made burning. Compared with the electrolytic application of protective layers, a coating without hydrogen embrittlement is achieved.
  • the layer can be applied by dipping, spinning or spraying and then baked.
  • the same purpose can be achieved by increasing the layer thickness.
  • This coating is non-electrolytically deposited on the metallic base of the screw without compromising its functionality.
  • the coating consists mainly of zinc and aluminum fins, which form in a metallic compound of chromium passivation, and also provides an optimal thin-film corrosion protection, so that seizure of the screw connection when using the chisel holder exchange system is prevented outdoors.
  • the starting materials for the layer contain organic impurities, these are converted into carbonic acid and water during the baking process. There are therefore no toxic residues when applying the layer, neither in the air nor in the water, since no rinsing of the applied layer is required.
  • the metallic layer of zinc and aluminum fins are connected to each other and to the metal base by metallic salts and chromium oxides.
  • the layer is formed by a chemical reaction between the layer material and the metal base during the baking process at about 300 ° C.
  • the layer material is available in a disc of zinc and aluminum fins in an aqueous chromic acid solution.
  • the dispersion contains only a small amount of organic substances needed to control the chemical reaction.
  • the baking process is the most important process when applying the coating.
  • the action of heat reduces the hexavalent chromium contained in the dispersion to insoluble and non-toxic trivalent chromium according to the following reaction: 2 ZnCr 2 O 7 ⁇ 2 ZnCr 2 O 4 + 3O 2 .
  • chromium salts surround every metallic lamella as well as the metal base. This allows the cohesion of the layer and the formation of a corrosion resistant coating.
  • a clamping screw can be designed such that it has a projection which rests with a contact surface on the clamping receptacle, and that the approach, at least in the adjoining the Anlaeg Structure area outer cross-sectional dimensions than the outer diameter of the external thread of the clamping screw.
  • the cross-section tapered approach further reduces the risk of damage to the threaded connection. If during operation a flattening of the contact surface occur as a result of the tension and labor occurring, then this does not affect the free disassembly. Namely, the approach can be freely rotated out of the threaded receptacle of the chisel holder, without damaging the threads occurs.
  • the approach is truncated cone-shaped and continuously tapers, starting from the external thread bearing portion of the clamping screw to the contact surface.
  • the clamping screws are designed in the form of a grub screw and completely screwed into the threaded receptacle of the base part.
  • the clamping screw is completely displaced from the Verschmony Scheme.
  • the drawing shows in side view and in section a chisel holder exchange system consisting of a base part 11 and a chisel holder 20.
  • the base part 11 is fixed on the surface of a milling drum 10, preferably welded.
  • the base part 11 has a chisel holder holder 12.
  • the chisel holder with a holder shank 22 is inserted into this.
  • the holder shaft is provided with a recessed clamping receptacle 23.
  • This tension receptacle 23 is accessible via a threaded receptacle 13.
  • the threaded receptacle 13 is inserted into the base part 11.
  • a clamping screw 15 is used for fixing the chisel holder 20 to the base part 11.
  • the clamping screw 15 is designed as a grub screw and has a tool holder 17 (hexagon socket) on the head side.
  • the clamping screw 15 is screwed with its external thread 16 in the internal thread 14 of the threaded receptacle 13.
  • the tool holder 17 facing away from the clamping screw 15 is provided with a projection 18.
  • the projection 18 is formed as a truncated cone and tapers starting from the region of the external thread 16 of the clamping screw 15 up to the free end of the clamping screw 15 continuously.
  • the projection 18 terminates with a contact surface 18.1.
  • the contact surface 18.1 is supported on a counter surface of the clamping receptacle 23.
  • the chisel holder used is supported with an abutment surface 28 on the base part 11. As the drawing reveals, a bore formed as a bit holder 21 opens into this abutment surface.
  • the bit holder 21 receives a round shank bit 25.
  • the round shank bit 25 has a chisel head, to which a chisel shank is formed.
  • On the drill collar a clamping sleeve 26 is mounted. This braces resiliently in the bit holder 21 and sets the round shank bit 25.
  • the chisel head is supported on a wear plate 25.1 on the top of the chisel holder.
  • the chisel head has a carbide tip 27.
  • the clamping screw 15 is clamped against the clamping receptacle 23. High preload forces are required.
  • a metallic layer of zinc and aluminum fins and a mineral chromium oxide binder is applied to the external thread 16. This layer is introduced after application. The coating also provides corrosion protection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Jigs For Machine Tools (AREA)
  • Connection Of Plates (AREA)
  • Road Repair (AREA)
  • Gripping On Spindles (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (6)

  1. Système de changement de porte-outil comprenant une pièce de base (11) présentant un logement pour porte-outil (12) dans lequel un porte-outil (20) pourvu d'un outil peut être inséré, le porte-outil étant introduit avec une queue de porte-outil (22) dans le logement de porte-outil et y étant maintenu au moyen de vis de serrage (15), et les vis de serrage pouvant être vissées dans un logement fileté (13) de la pièce de base (11) et en l'occurrence s'appuyant, en exerçant une contrainte, dans un logement de serrage (23) de la queue de porte-outil (22) du porte-outil (20), caractérisé en ce que les surfaces du filet extérieur (16) de la vis de serrage (15) et/ou du filet intérieur (14) du logement fileté (13) du logement de porte-outil (12) sont pourvues d'une couche métallique constituée de lamelles de zinc et d'aluminium et d'un liant minéral à base d'oxyde de chrome qui est cuit après l'application.
  2. Système de changement de porte-outil selon la revendication 1, caractérisé en ce que le revêtement présente des épaisseurs de couche de 5 µm à 10 µm.
  3. Système de changement de porte-outil selon la revendication 1 ou la revendication 2, caractérisé en ce que l'effet barrière des surfaces revêtues peut augmenter avec le nombre de lamelles par µm de couche.
  4. Système de changement de porte-outil selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la force de précontrainte / le couple de serrage du raccordement fileté entre la vis de serrage (15) et le logement fileté (13) du logement de porte-outil (12) peut être augmenté(e) par le choix d'une plus grande épaisseur.
  5. Système de changement de porte-outil selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la couche est appliquée par un procédé d'immersion, de centrifugation ou de projection, est ensuite séchée et finalement cuite à environ 300 °C.
  6. Système de changement de porte-outil selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le coefficient de friction du raccordement fileté est réduit par une addition de lubrifiants.
EP02025217A 2001-12-15 2002-11-12 Système pour échanger des porte-pics avec des vis de serrage Expired - Lifetime EP1319801B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10161713 2001-12-15
DE10161713A DE10161713B4 (de) 2001-12-15 2001-12-15 Meißelhalterwechselsystem

Publications (3)

Publication Number Publication Date
EP1319801A2 EP1319801A2 (fr) 2003-06-18
EP1319801A3 EP1319801A3 (fr) 2003-08-20
EP1319801B1 true EP1319801B1 (fr) 2006-05-17

Family

ID=7709371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02025217A Expired - Lifetime EP1319801B1 (fr) 2001-12-15 2002-11-12 Système pour échanger des porte-pics avec des vis de serrage

Country Status (5)

Country Link
US (1) US6866343B2 (fr)
EP (1) EP1319801B1 (fr)
AT (1) ATE326613T1 (fr)
DE (2) DE10161713B4 (fr)
ES (1) ES2261580T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105133480A (zh) * 2015-08-18 2015-12-09 苏州凯通工程机械有限公司 一种铣刨机用刀座基座系统
WO2022016875A1 (fr) * 2020-07-24 2022-01-27 苏州五元素机械制造有限公司 Burin à double disque limiteur

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US9909416B1 (en) 2013-09-18 2018-03-06 The Sollami Company Diamond tipped unitary holder/bit
US10107097B1 (en) 2012-10-19 2018-10-23 The Sollami Company Combination polycrystalline diamond bit and bit holder
US10105870B1 (en) 2012-10-19 2018-10-23 The Sollami Company Combination polycrystalline diamond bit and bit holder
US10260342B1 (en) 2012-10-19 2019-04-16 The Sollami Company Combination polycrystalline diamond bit and bit holder
US10180065B1 (en) 2015-10-05 2019-01-15 The Sollami Company Material removing tool for road milling mining and trenching operations
US9988903B2 (en) 2012-10-19 2018-06-05 The Sollami Company Combination polycrystalline diamond bit and bit holder
USD772315S1 (en) 2013-04-11 2016-11-22 Betek Gmbh & Co. Kg Chisel
US10767478B2 (en) 2013-09-18 2020-09-08 The Sollami Company Diamond tipped unitary holder/bit
US10633971B2 (en) 2016-03-07 2020-04-28 The Sollami Company Bit holder with enlarged tire portion and narrowed bit holder block
US10947844B1 (en) 2013-09-18 2021-03-16 The Sollami Company Diamond Tipped Unitary Holder/Bit
US10995613B1 (en) 2013-09-18 2021-05-04 The Sollami Company Diamond tipped unitary holder/bit
US10415386B1 (en) 2013-09-18 2019-09-17 The Sollami Company Insertion-removal tool for holder/bit
US10577931B2 (en) 2016-03-05 2020-03-03 The Sollami Company Bit holder (pick) with shortened shank and angular differential between the shank and base block bore
US10876402B2 (en) 2014-04-02 2020-12-29 The Sollami Company Bit tip insert
US10794181B2 (en) 2014-04-02 2020-10-06 The Sollami Company Bit/holder with enlarged ballistic tip insert
US9976418B2 (en) 2014-04-02 2018-05-22 The Sollami Company Bit/holder with enlarged ballistic tip insert
US10968739B1 (en) 2013-09-18 2021-04-06 The Sollami Company Diamond tipped unitary holder/bit
US11168563B1 (en) 2013-10-16 2021-11-09 The Sollami Company Bit holder with differential interference
US11339656B1 (en) 2014-02-26 2022-05-24 The Sollami Company Rear of base block
US11339654B2 (en) 2014-04-02 2022-05-24 The Sollami Company Insert with heat transfer bore
US11891895B1 (en) 2014-04-23 2024-02-06 The Sollami Company Bit holder with annular rings
US10502056B2 (en) 2015-09-30 2019-12-10 The Sollami Company Reverse taper shanks and complementary base block bores for bit assemblies
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US11103939B2 (en) 2018-07-18 2021-08-31 The Sollami Company Rotatable bit cartridge
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Publication number Priority date Publication date Assignee Title
CN105133480A (zh) * 2015-08-18 2015-12-09 苏州凯通工程机械有限公司 一种铣刨机用刀座基座系统
WO2022016875A1 (fr) * 2020-07-24 2022-01-27 苏州五元素机械制造有限公司 Burin à double disque limiteur

Also Published As

Publication number Publication date
EP1319801A2 (fr) 2003-06-18
US6866343B2 (en) 2005-03-15
EP1319801A3 (fr) 2003-08-20
DE10161713B4 (de) 2004-02-05
ATE326613T1 (de) 2006-06-15
ES2261580T3 (es) 2006-11-16
DE10161713A1 (de) 2003-07-10
DE50206795D1 (de) 2006-06-22
US20030132660A1 (en) 2003-07-17

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