EP2206586B1 - Segment d'une scie à chaîne pour scies motorisées ultrarapides de scies à pierre, béton, tuile et métal - Google Patents

Segment d'une scie à chaîne pour scies motorisées ultrarapides de scies à pierre, béton, tuile et métal Download PDF

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Publication number
EP2206586B1
EP2206586B1 EP20090016116 EP09016116A EP2206586B1 EP 2206586 B1 EP2206586 B1 EP 2206586B1 EP 20090016116 EP20090016116 EP 20090016116 EP 09016116 A EP09016116 A EP 09016116A EP 2206586 B1 EP2206586 B1 EP 2206586B1
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EP
European Patent Office
Prior art keywords
segment
outer links
links
cutting
saw chain
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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.)
Not-in-force
Application number
EP20090016116
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German (de)
English (en)
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EP2206586A1 (fr
Inventor
Bernhard Brehm
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Individual
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Individual
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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
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/124—Saw chains; rod-like saw blades; saw cables

Definitions

  • the invention relates to a segment of a saw chain for high-speed chainsaws for sawing rock, concrete, brick and metal. Such a segment is in the WO 2008/041263 A1 discloses, from which the features of the preamble of claim 1 are known.
  • the known chain systems which are suitable for the machining of hard materials such as rock, concrete, brick and metal have chain segments, the members of which are connected transversely to the direction of metal rivets or metal bolts on which the members rotatably support, with each other.
  • This construction leads to large chain widths.
  • the metal bolts or rivets are also made of relatively soft material, which makes them always worn in the same place, resulting in elongation of the saw chains. The elongation must be compensated by adjusting the saw chain, which leads to failure of the saws and additional repair work with the associated costs.
  • From the DE 1 148 481 is a sawing chain for rock known whose segments consist of outer links and inner links, which are connected transversely to the direction of rivets. On the outer and / or inner links grinding materials are arranged, whose distance is only 0.2 to 0.8 mm and which are made wider than the links of the chain. However, the connection of the outer and inner links is made by the conventionally known and wear metal bolt connection.
  • the DE 103 11 915 A1 discloses a wear-resistant transport chain, in which outer links, tabs, sleeves and pins ( Fig.1, 2 and 5) surfaces or surface portions of individual parts subject to particular wear are coated with a diamond-like amorphous carbon (DLC) layer. These surfaces may also have metallic particles distributed in the DLC layer and made of tungsten, chromium or titanium.
  • This chain design reduces the wear of the chain parts but does not eliminate it. In addition, it is not subject to the high stress of a saw chain for rock.
  • a wear-improved timing chain and a method for the production thereof in which elements of the chain, in particular connecting bolt hollow pins, sleeves flaps or rollers in the region of their surface have a coating of a Gleitstoff für or a combination of a hard material and a Gleitstoff für.
  • These layers can consist of many different hard metals and their alloys as well as polymers or organic bonded coatings.
  • hard-material layers of a nidritic, carbidic and / or carbonitride-type which are applied by all customary dip, spray, powder and PVD / CVD methods, can be applied under the sliding layers.
  • the layer thicknesses are between 1 and 15 microns.
  • the disclosed chain parts are low-wear but not wear-resistant. In addition, their production is very time consuming only by the required coatings before installation.
  • the fasteners made of wear-resistant ceramic material and end roughened peripheral surfaces and the outer members consist of a shrinkable steel and have at least two through holes and at least one in the direction of right-angled tab, the roughened peripheral surfaces with the through holes of two opposing outer members by a shrink-fit and the tabs are positively connected to each other, wherein the end faces of the connecting elements with the outer surfaces of the outer members form a plane.
  • the cutting segment are each connected to the upper edges and the tabs of two opposing outer members frictionally with each other.
  • a welded connection is preferred for the adhesion of the parts.
  • This composite ensures a solid Seat of the cutting segments on the outer links and additionally supports the strength of the composite of the outer links with the connecting elements. Since the cut segments are wider than the segments of the saw chain, only the cut segments are subject to wear but not the chain segments. The saw chain is thus not only wear-free but also maintenance-free.
  • the simple design of the individual parts of a segment and their small number in connection with the joining and joining method used is particularly advantageous because it allows an automated and thus easy and fast assembly of the segments and thus time and cost can be produced.
  • the wear and maintenance-free structure of the saw chain according to the invention ensures despite these considerable advantages over the prior art, the offer of a low-priced tool that can be disposed of after consumption of the cutting segments.
  • two erfindugssecuree segments 1 a saw chain in combination and their individual parts are shown. They consist of two successively arranged in the direction of pairs of outer members 2, which consist for example of a shrinkable heat-treated steel, two in the direction of juxtaposed through holes 2.1 and at its lower edge 2.5 each center in the direction of a right-angled tab 2.2 and in which each have a pair Outer members 2 is arranged opposite one another so that the passage openings 2.1 are opposite transversely to the direction and the tabs facing each other 2.2.
  • three inner members 3 are arranged one behind the other in the running direction, which consist for example of alloyed stainless steel X153CrMoV12, 12379, a triangular shape with a top edge 3.2 and two parallel to this passage opening 3.1 two opposite to the cutting direction edges 3.3, the form a corner 3.5 and each have a molded circular segment-shaped recesses 3.4.
  • the inner members 3 are arranged with their upper edge 2.4 in the cutting direction between the outer members 2, that always a passage opening 3.1 of an inner member 3 transversely to the direction with two opposing through holes 2.1 of two opposite outer members 2 corresponds.
  • the second through opening 3.1 of the same inner member 3 then corresponds to the opposing first through openings 2.1 of the following pair of two opposing outer members 2, etc.
  • the connecting elements 4 are preferably made of a wear-resistant sintered zirconium oxide and were produced, for example, as a hollow cylinder.
  • the connecting elements 4 have a length which corresponds approximately to the sum of the material thicknesses of the respectively opposite two outer members 2 and the inner member 3 located therebetween.
  • the outer diameter of the connecting elements 4 corresponds in the central region approximately to the inner diameter of the passage openings 3.1 of the inner member 3.
  • Two end-shaped peripheral surfaces 4.1 are provided for example with a knurling.
  • the outer diameter of the peripheral surfaces 4.1 corresponds approximately to the inner diameter of the passage openings 2.1 and the length of the material thickness of the outer members 2 and the end faces 4.2 of the connecting elements 4 are flat.
  • a connecting element 4 is rotatably mounted with its central outer diameter in a through hole 3.1 of an inner member 3 and is with his Endally molded peripheral surfaces 4.1 in two adjacent to both outer surfaces of the inner member 3 through holes 2.1 of two opposing outer members 2 by a shrink and press fit anchored so that the outer surfaces 2.3 of the outer members 2 with the end faces 4.2 of the connecting elements 4 form a plane.
  • each of the two inner members 3 projecting towards each other ends of the integrally formed on the lower edges 2.5 of the outer members 2 tabs 2.2 are welded together.
  • a commercially available cutting segment 5 is, for example, welded on the upper edges 2.4 of two opposing outer members 2 in such a way that it projects beyond the body of each segment 1 on both sides in the running direction.
  • the second embodiment according to Fig.3 and Fig.4 shows two segments of a saw chain 1 according to the invention in the composite and their individual parts, wherein the outer members 2 additionally have at its upper edge 2.4 a second formed in the direction of tab 2.2.
  • the inner links 3 are executed in a square shape with rounded corners and two arranged in the direction between two corners through holes 3.1 and arranged as a rhombus between the outer members 2.
  • a in the cutting direction on the upper edge 2.4 of the outer members 2 protruding corner 3.6 has a rectangular recess 3.7 and serves as Räum leopard and an opposite on the lower edge of the outer members 2 2 protruding corner serves as a transport member of the segment 1.
  • FIG. 3 shown composite of two segments 1 shows that only one segment 1 over the two upper edges 2.4 of the outer members 2 with a sectional segment 5 and the two tabs 2.2 at the upper edge 2.4 and the two tabs 2.2 at the lower edge 2.5 of the outer members 2 is welded , A following segment 1 is welded as a dummy segment only over the middle of the upper edge 2.4 and at the lower edge 2.5 of the outer members 2 at right angles to the direction of formed and against each other directed tabs 2.2.
  • the connecting elements 4 are made in this example as solid bolts of a ceramic base material, however, have the same outer contour as described in Example 1 and consist for example of a zirconium-reinforced alumina.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (6)

  1. Segment (1) d'une chaîne de scie pour scies à moteur destinées à scier la roche, le béton, les briques et le métal, comprenant au moins deux éléments extérieurs (2) disposés en vis-à-vis et au moins deux éléments intérieurs (3) qui sont logés entre lesdits éléments extérieurs (2) et qui sont reliés entre eux par au moins deux éléments de jonction (4) ainsi qu'un élément de coupe (5) qui est relié aux éléments extérieurs (2) dans la direction de coupe, chacun des segments (1) ou un segment sur deux pouvant être équipé d'un segment de coupe (5), caractérisé par le fait
    que lesdits éléments de jonction (4) sont réalisés dans une matière céramique résistante à l'usure, présentent des surfaces périphériques (4.1) rendues rugueuses aux extrémités et que lesdits éléments extérieurs (2) sont réalisés dans un acier rétractable et présentent au moins deux ouvertures de passage (2.1) ainsi qu'au moins une patte (2.2) surmoulée à angle droit dans la direction de marche, et que lesdites surfaces périphériques (4.1) rendues rugueuses et les ouvertures de passage (2.1) de deux éléments extérieurs (2) opposés sont reliées par un ajustage serré et à retrait et les pattes (2.2) sont reliées entre elles par adhérence, les surfaces frontales (4.2) des éléments de jonction (4) formant un plan avec les surfaces extérieures (2.3) des éléments extérieurs (2),
    que les éléments intérieurs (3) sont réalisés dans un acier spécial allié, sont logés entre deux éléments extérieurs (2) opposés, par respectivement une première ouverture de passage (3.1) sur un premier élément de jonction (4) d'un segment (1) et par une deuxième ouverture de passage (3.1) sur le deuxième élément de jonction (4) du segment (1) suivant, de manière rotative autour des axes de ceux-ci, reliant ainsi entre eux les segments (1) de la chaîne de scie, et
    que le segment de coupe (5) est relié respectivement aux arêtes supérieures (2.4) et les pattes (2.2) de deux éléments extérieurs (2) opposés sont reliés par adhérence entre elles, ledit segment de coupe (5) étant plus large dans la direction de marche que le segment (1) de la chaîne de scie.
  2. Segment (1) d'une chaîne de scie, selon la revendication 1, caractérisé par le fait que ledit élément extérieur (2) présente des coins rectangulaires sur son arête supérieure (2.4) montrant dans la direction de coupe et des coins arrondis sur son arête inférieure (2.5) opposée et est traversé de manière excentrique, parallèlement à l'arête inférieure (2.5), par lesdites deux ouvertures de passage (2.1) et que, soit sur l'arête inférieure (2.5) soit sur l'arête supérieure (2.4) et sur l'arête inférieure (2.5), respectivement une patte (2.2) est surmoulée de manière centrale et à angle droit dans la direction de marche de la chaîne de scie.
  3. Segment (1) d'une chaîne de scie, selon la revendication 1, caractérisé par le fait que ledit élément intérieur (3) est réalisé en acier spécial allié ou acier pour roulement à billes 100 Cr6, 1.3505, acier rapide, HS6-5-2C, 1.3342, acier spécial allié X153CrMoV12, 12379 ou en oxyde d'aluminium renforcé par zirconium ou en oxyde de zirconium, ZrO2, présente une forme pour l'essentiel triangulaire à coins arrondis et est traversé par lesdites deux ouvertures de passage (3.1) parallèlement à une arête supérieure (3.2) montrant dans la direction de coupe, et dont les deux arêtes (3.3) qui suivent et qui s'étendent en pointe l'une par rapport à l'autre et à l'encontre de la direction de coupe présentent un évidement (3.4) en forme de segment de cercle, le coin (3.5) de l'élément intérieur (3), qui s'étend à l'encontre de la direction de coupe étant l'élément de transport du segment (1).
  4. Segment (1) d'une chaîne de scie, selon la revendication 1, caractérisé par le fait que, dans une deuxième variante, ledit élément intérieur (3) présente un contour extérieur carré à coins arrondis ainsi que deux ouvertures de passage (3.1) entre deux coins arrondis, est disposé en tant que losange entre deux éléments extérieurs (2), et un coin (3.6) dépassant, dans la direction de coupe, les éléments extérieurs (2) et ayant un évidement (3.7) fait fonction de dent de brochage et le coin (3.8) opposé dépassant l'élément extérieur (2) à l'encontre de la direction de coupe fait fonction d'élément de transport du segment (1), deux éléments extérieurs (2) opposés reliés par des éléments de jonction (4) étant soudés sur leurs arêtes supérieures (2.4) avec le segment de coupe (5) qui, lorsque la chaîne est tendue, peut être reçu, avec sa zone inférieure, par les évidements (3.7) de deux éléments intérieurs (3) disposés l'un derrière l'autre.
  5. Segment (1) d'une chaîne de scie, selon la revendication 1, caractérisé par le fait que ledit élément de jonction (4) est un profilé massif ou creux en oxyde de zirconium fritté, ZrO2, ou en oxyde d'aluminium renforcé par zirconium dont les surfaces périphériques extérieures (4.1) disposées aux extrémités présentent une surface rendue rugueuse, moletée ou dentée, des surfaces frontales (4.2) planes et un diamètre qui est inférieur au diamètre de l'élément de jonction (4) dans l'ensemble, et les surfaces périphériques (4.1) présentent une longueur qui correspond à l'épaisseur de matière des éléments extérieurs (2) ce par quoi, lors de l'opération de serrage et de retrait des surfaces périphériques (4.1) dans les ouvertures de passage (2.1) des éléments extérieurs (2), une liaison optimale à engagement positif peut être produite.
  6. Segment (1) d'une chaîne de scie, selon la revendication 1, caractérisé par le fait que la liaison par adhérence entre les arêtes extérieures (2.4) des éléments extérieurs (2) et un segment de coupe (5) ainsi qu'entre les deux pattes (2.2) respectivement opposées des éléments extérieurs (2) sont des soudures.
EP20090016116 2009-01-08 2009-12-30 Segment d'une scie à chaîne pour scies motorisées ultrarapides de scies à pierre, béton, tuile et métal Not-in-force EP2206586B1 (fr)

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DE102009004369 2009-01-08

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EP2206586A1 EP2206586A1 (fr) 2010-07-14
EP2206586B1 true EP2206586B1 (fr) 2013-05-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12103199B2 (en) 2019-06-24 2024-10-01 Husqvarna Ab Rotatable cutting chain work tool, a wall saw arrangement comprising such a work tool, an annular member and a method for producing an annular member

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010014044B4 (de) * 2010-04-06 2020-10-08 Dr. Bender GmbH Segment einer Sägekette für hochtourige Motorsägen zum Sägen von Gestein, Beton, Ziegel und Metall

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1148481B (de) 1957-10-05 1963-05-09 Andreas Stihl Saegekette fuer Motorkettensaegen
EP0648586A1 (fr) 1993-10-19 1995-04-19 Etablissement Euroligna Maschinen Aggregate Industriebedarf Chaîne de sciage
JP2003269549A (ja) 2002-03-19 2003-09-25 Tsubakimoto Chain Co 耐摩耗性チェーン
US20040182216A1 (en) * 2002-07-31 2004-09-23 Electrolux Professional Outdoor Products, Inc. Coating for a chainsaw chain
US7490715B2 (en) 2005-03-11 2009-02-17 Joh. Winklhofer & Soehne Gmbh & Co. Kg Link chain with improved wear resistance and method of manufacturing same
ITRM20060533A1 (it) * 2006-10-05 2008-04-06 Fantini Sud S P A Catena perfezionata per segatrici di pietre ornamentali non facente uso di spine di bloccaggio del perno di articolazione

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12103199B2 (en) 2019-06-24 2024-10-01 Husqvarna Ab Rotatable cutting chain work tool, a wall saw arrangement comprising such a work tool, an annular member and a method for producing an annular member

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