EP3043962A1 - Cutting tool - Google Patents

Cutting tool

Info

Publication number
EP3043962A1
EP3043962A1 EP14781087.3A EP14781087A EP3043962A1 EP 3043962 A1 EP3043962 A1 EP 3043962A1 EP 14781087 A EP14781087 A EP 14781087A EP 3043962 A1 EP3043962 A1 EP 3043962A1
Authority
EP
European Patent Office
Prior art keywords
cutting
segments
segment
axial position
discs
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.)
Granted
Application number
EP14781087.3A
Other languages
German (de)
French (fr)
Other versions
EP3043962B1 (en
Inventor
Michael Jung
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.)
Rhodius Schleifwerkzeuge GmbH and Co KG
Original Assignee
Rhodius Schleifwerkzeuge 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 Rhodius Schleifwerkzeuge GmbH and Co KG filed Critical Rhodius Schleifwerkzeuge GmbH and Co KG
Publication of EP3043962A1 publication Critical patent/EP3043962A1/en
Application granted granted Critical
Publication of EP3043962B1 publication Critical patent/EP3043962B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12Cut-off wheels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/06Grinders for cutting-off
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12Cut-off wheels
    • B24D5/123Cut-off wheels having different cutting segments

Definitions

  • the invention relates to a cutting tool with a plurality of segment cutting discs.
  • One segment gap remains between two cutting segments.
  • the cutting segments are offset with respect to a central cutting plane. With such cut-off wheels can be placed on the actual wall thickness of the cutting disc quite wide cuts. If you use these blades for setting the cuts in the wall, so remains a smaller and thus easier to remove center bar. Although the cutting width of such cutting discs could be increased by widening the cutting segments again. However, such broadening is limited, since the risk of clogging the cutting edge with removed material increases with the width of the cutting edges.
  • a cutting tool which comprises three segmented cutting discs, each with a master blade and distributed over the circumference of the master blade cutting segments.
  • the cutting discs are arranged insoluble coaxial side by side.
  • identical cutting discs are always used.
  • Cutting discs around segment cutting discs At least some of the cutting segments protrude axially out of the central cutting plane. Between two circumferentially adjacent cutting segments of a cutting disc each leaves a segment gap.
  • the cutting segments are radially on the outside of a support area, in particular made of sheet metal applied. At least one of the cutting segments, which is arranged in an axially first position, is enlarged relative to a second cutting segment, which is arranged in a second axial position. Under the cutting segment in particular the area of the cutting disc is understood, the radially outward on a
  • Carrier area is attached and comprises a abrasive material.
  • the at least one first cutting segment and the at least one second cutting segment are arranged at axially opposite outermost axial positions of the cutting tool.
  • the axially outermost cutting segments on the one outermost axial side are reinforced with respect to the axially outermost cutting segments on the other outermost axial side.
  • Cutting tool and the machine tool used can be found that an outermost axial position can be much heavier loaded than the other extreme axial position. This may be due to the handedness, that is, e.g. As a matter of principle, the right-hander should exert greater force on the machine on the right-hand side than on the left-hand side. Therefore, it can also be provided that the cutting tools are expressly designed for left-handers and expressly for right-handed people, then in each case different cutting segments are to be reinforced.
  • the outer cutting discs have a greater thickness than the inner cutting discs.
  • the outer segments are usually more stressed than the inner segments.
  • the outer segments bring the outer cut into the solid masonry.
  • the inner segments are intended to interpose the remaining central web to remove the outer cuts.
  • only a small amount of labor is required when removing the center bar, since the stability of the central bar is already reduced by the lack of lateral support. Also for this it is sufficient that the segments of the outer cutting discs are only increased in their cross-sectional thickness.
  • An enlarged trained segment can be designed trapezoidal.
  • the bases of the trapezium are approximately radially aligned and approximately parallel to each other (the angular offset due to the different circumferential position is neglected).
  • the arranged in the direction of rotation front side is longer than the rear side arranged base.
  • the radially outer leg represents a circular arc section.
  • the second leg then results from the connection of the radially inner ends of the bases. It has also been shown in this design of the segments that the reduced trained segments are, so to speak, in a kind of shadow of the enlarged formed segments. This results in a more favorable distribution of wear on the individual segments.
  • Figure 1 shows an inventive cutting tool
  • FIG. 1 shows a cutting tool 1 according to the invention. This comprises three cutting discs 2 ' , 2 ", 2"'.
  • the cutting discs 2 'and 2'" are the axially outer
  • Cutting tool in an alternative embodiment only two cutting discs, both cutting discs are the axially outer cutting discs: it is then no internal cutting discs provided.
  • Cutting tools with more than three cutting discs comprise several internal cutting discs.
  • the first outer cutting disc 2 ' has two different types of cutting segments, namely left cutting segments 4 L ' and right projecting cutting segments 4 R '. Both types of cutting segments protrude from the cutting plane, since a respective carrier region 8, to which the segments 4 are fastened, are bent over the master blade 5, which defines the central cutting plane E.
  • the support area need not be bent out, but can also be held by other means at an angle to the cutting plane E 'on a common master sheet 5; however, it is essential that the cutting segments 4 'all protrude axially from the central cutting plane E'. This also applies to the other cutting discs.
  • the left and right projecting cutting segments are arranged alternately in the circumferential direction.
  • Cutting segment 4 R '" present on the third cutting disc axially outer cutting segments 4 A ' " of the cutting tool 1, which in addition to the
  • the axially outer cutting segments 4 A 'and 4 A '" are the most heavily loaded cutting segments of the cutting tool 1. These are formed enlarged with respect to the other segments As can be seen in particular from Figure 1 b, these outermost cutting segments 4 A ', what equally even for the unrecognizable cutting segments 4 A "'applies, a trapezoidal shaped in side view shape. A in circulation direction U front-side base 6 of this trapezoid is longer than one in
  • the inner segments 4 are designed substantially annular, with a constant radial dimension over the circumferential extent.
  • the configuration of the inner segments 4 t “, 4" of the second and third cutting disks 2 ", 2 '” corresponds to the configuration of the inner segments 4 ", 4" of the first cutting disk 2'.
  • the terms radial and parallel are to be interpreted broadly in connection with the trapezoidal design and are intended to indicate the coarse alignment. The terms can also include a slight curvature, so no exactly rectilinear training.
  • Figure 2 shows an alternative embodiment, which largely corresponds to the embodiment of Figure 1. For the sake of simplicity, they are only cross sections of three segments per
  • FIG. 2 basically corresponds to a section as indicated in FIG. 1 by the connecting line II-II. Notwithstanding the embodiment of Figure 1 not only left and right outstanding segments 4 L and 4 R are present, but also average cutting segments 4 ⁇ ', 4 M “, 4 M “' provided, which are not staggered to the respective middle Cutting plane E. Also such
  • Cutting segments are referred to as internal cutting segment 4.
  • Design of the middle cutting segments 4 M '. 4 M “, 4 M " is identical to the other internal cutting segments 4 already described.
  • the measures that contribute to the reinforcement of the entire cutting tool therefore, require only an enlarged training on a fairly small number of segments and are therefore much cheaper to perform, than the overall reinforcement of all cutting discs or all segments of all cutting discs.
  • a segment 4 A can also be formed reinforced relative to another segment 4, also in that the segments are thicker in their cross section. LIST OF REFERENCE NUMBERS

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Milling Processes (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The invention relates to a cutting tool (1) having a plurality of cutting disks (2), in particular diamond cutting disks, wherein the cutting disks (2) are coaxially arranged adjacent to each other along a common axis of rotation (A), wherein each cutting disk (2) comprises a blade body (5) having a plurality of cutting segments (4) distributed over the circumference of the blade body (5), wherein each blade body (5) defines a central cutting plate (E), wherein at least some of the cutting segments protrude axially from the central cutting plane (E), wherein a segment gap (3) remains between each pair of cutting segments (4) of a cutting disk (2) adjacent to each other in a circumferential direction (U), wherein a first of the cutting segments, which is arranged in a first axial position, is enlarged in comparison with a second cutting segment, which is arranged in a second axial position that deviates from the first axial position.

Description

Schneidwerkzeug  cutting tool
Beschreibung description
Die Erfindung betrifft ein Schneidwerkzeug mit mehreren Segmenttrennscheiben. The invention relates to a cutting tool with a plurality of segment cutting discs.
Bei der Herstellung von Wandschlitzen z.B. für das Verlegen von Elektroleitungen, ist es bewährte Praxis, mittels einer Schneidscheibe zuerst zwei parallele Schnitte in die Wand zu setzen. Zwischen den Schnitten verbleibt allerdings zunächst ein Mittelsteg, der In the manufacture of wall slits e.g. for the laying of electric cables, it is good practice to first set two parallel cuts in the wall by means of a cutting disc. Between the cuts, however, initially remains a central web, the
anschließend mit einem Meißel aufwändig abzutragen ist. then consuming with a chisel is consuming to remove.
Aus der EP 2 193 882 B1 sind Trennscheiben zum Erzeugen breiter Kerben in Wände von mehr als 5mm bekannt. Der Umfang eines Stammblattes ist mit mehreren From EP 2 193 882 B1 cutting discs for producing wide notches in walls of more than 5mm are known. The extent of a master sheet is several
Schneidsegmenten versehen. Zwischen zwei Schneidsegmenten verbleibt jeweils eine Segmentlücke. Zur Schaffung eines verbreiterten Schnitts sind die Schneidsegmente bezüglich einer mittleren Schnittebene versetzt angeordnet. Mit solchen Trennscheiben können bezogen auf die eigentliche Wandstärke der Trennscheibe recht breite Schnitte gesetzt werden. Verwendet man diese Trennscheiben für das Setzen der Schnitte in die Wand, so verbleibt ein verkleinerter und damit einfacher zu entfernender Mittelsteg. Zwar könnte die Schnittbreite solcher Trennscheiben durch Verbreitern der Schneidsegmente nochmals vergrößert werden. Einer solchen Verbreiterung sind allerdings Grenzen gesetzt, da die Gefahr des Zusetzens der Schneide mit abgetragenem Material mit der Breite der Schneiden zunimmt. Provided cutting segments. One segment gap remains between two cutting segments. To create a widened section, the cutting segments are offset with respect to a central cutting plane. With such cut-off wheels can be placed on the actual wall thickness of the cutting disc quite wide cuts. If you use these blades for setting the cuts in the wall, so remains a smaller and thus easier to remove center bar. Although the cutting width of such cutting discs could be increased by widening the cutting segments again. However, such broadening is limited, since the risk of clogging the cutting edge with removed material increases with the width of the cutting edges.
In der DE 20 2012 002 545 U1 ist ein Schneidwerkzeug beschrieben, welches drei segmentierte Trennscheiben mit jeweils einem Stammblatt und mit über den Umfang des Stammblattes verteilten Schneidsegmenten umfasst. Die Trennscheiben sind unlösbar koaxial nebeneinander angeordnet. In einem solchen Schneidwerkzeug werden stets identische Trennscheiben verwendet. Es hat sich allerdings gezeigt, dass die Trennscheiben eines solchen Schneidwerkzeugs unterschiedlich stark verschleißen. Ist eine der In DE 20 2012 002 545 U1 a cutting tool is described, which comprises three segmented cutting discs, each with a master blade and distributed over the circumference of the master blade cutting segments. The cutting discs are arranged insoluble coaxial side by side. In such a cutting tool identical cutting discs are always used. However, it has been shown that the cutting discs of such a cutting tool wear different degrees. Is one of the
Trennscheiben verschlissen, kann das gesamte Schneidwerkzeug nicht mehr verwendet werden. Das ist umso bedauerlicher, da die übrigen, noch nicht verschlissenen Worn cutting discs, the entire cutting tool can not be used. This is all the more regrettable since the others, not yet worn out
Trennscheiben für sich genommen noch funktionsfähig bleiben aber dennoch nutzlos werden. Insofern geht mit diesem Problem auch eine gewisse Verschwendung von Discs themselves remain functional but still become useless. In this respect, a certain waste of this problem also comes from
Rohstoffen einher, die insbesondere im Falle von Diamanttrennscheiben recht teuer sind. Es ist daher Aufgabe der vorliegenden Erfindung, ein eingangs genanntes Schneidwerkzeug hinsichtlich der angesprochenen Problematik zu verbessern. Raw materials that are quite expensive especially in the case of diamond cutting discs. It is therefore an object of the present invention to improve an aforementioned cutting tool in terms of the problem addressed.
Die der Erfindung zugrunde liegende Aufgabe wird gelöst durch ein Schneidwerkzeug nach Anspruch 1 ; bevorzugte Ausgestaltung ergeben sich aus den Unteransprüchen. The object underlying the invention is achieved by a cutting tool according to claim 1; preferred embodiment will become apparent from the dependent claims.
Das erfindungsgemäße Schneidwerkzeug umfasst mehrere Trennscheiben, insbesondere Diamanttrennscheiben. Die Trennscheiben sind koaxial entlang einer gemeinsamen Drehachse benachbart zueinander angeordnet. Jede Trennscheibe umfasst ein Stammblatt mit mehreren über den Umfang des Stammblatts verteilten Schneidsegmenten, wobei jedes Stammblatt eine mittlere Schneidebene definiert. Insofern handelt es sich bei den The cutting tool according to the invention comprises a plurality of cutting discs, in particular diamond cutting discs. The cutting discs are arranged coaxially along a common axis of rotation adjacent to each other. Each blade comprises a master blade having a plurality of cutting segments distributed about the circumference of the blade, each blade defining a central cutting plane. In this respect, it is in the
Trennscheiben um Segmenttrennscheiben. Zumindest einige der Schneidsegmente ragen aus der mittleren Schneidebene axial heraus. Zwischen zwei in Umfangsrichtung benachbarten Schneidsegmenten einer Trennscheibe verbleibt jeweils eine Segmentlücke. Die Schneidsegmente sind radial außen auf einem Trägerbereich, insbesondere aus Blech, aufgebracht. Zumindest eines der Schneidsegmente, welches in einer axial ersten Position angeordnet ist, ist vergrößert ausgebildet gegenüber einem zweiten Schneidsegment, welches in einer zweiten axialen Position angeordnet ist. Unter dem Schneidsegment wird insbesondere der Bereich der Trennscheibe verstanden, der radial außen an einem Cutting discs around segment cutting discs. At least some of the cutting segments protrude axially out of the central cutting plane. Between two circumferentially adjacent cutting segments of a cutting disc each leaves a segment gap. The cutting segments are radially on the outside of a support area, in particular made of sheet metal applied. At least one of the cutting segments, which is arranged in an axially first position, is enlarged relative to a second cutting segment, which is arranged in a second axial position. Under the cutting segment in particular the area of the cutting disc is understood, the radially outward on a
Trägerbereich befestigt ist und ein schleifaktives Material umfasst. Carrier area is attached and comprises a abrasive material.
Der Kern der Erfindung liegt insbesondere in der Erkenntnis begründet, dass The essence of the invention is based in particular on the knowledge that
Schneidsegmente zwar unterschiedlich schnell verschleißen; die Schneidsegmente an identischen axialen Positionen hingegen verschleißen aber im Wesentlichen gleichmäßig. Die Lösung besteht folglich darin, selektiv die Schneidsegmente individuell derart zu verstärken, dass die Verstärkung durch Vergrößerung nur diejenigen wenigen Although cutting segments wear out at different speeds; the cutting segments at identical axial positions, however, wear out substantially uniformly. The solution, therefore, is to selectively reinforce the cutting segments individually such that the gain by enlarging only those few
Schneidsegmente betrifft, die einem erhöhten hohen Verschleiß ausgesetzt sind. Es wird folglich bewusst davon abgesehen, durch eine pauschale Verstärkung des Concerns cutting segments which are subject to increased high wear. It is therefore deliberately excluded by a blanket reinforcement of the
Schneidwerkzeugs dessen Lebensdauer zu erhöhen. Vielmehr werden selektiv einzelne Segmente gegenüber anderen Segmenten vergrößert ausgebildet, um die Lebensdauer sämtlicher Segmente aneinander anzugleichen. Besonders stark belastete Segmente können zusätzlich verstärkt werden; besonders gering belastete Segmente können in ihrer Widerstandskraft auch reduziert werden, was sich unmittelbar auf den Aufwand an einzusetzendem Rohstoff auswirkt. Anhand von Testreihen kann ermittelt werden, inwiefern eine vergrößerte Ausbildung von einzelnen Segmenten zu erfolgen hat, damit die Schneidsegmente auf allen Positionen möglichst gleichmäßig abgenutzt werden bzw. eine möglichst identische Lebensdauer haben. Ziel ist es folglich, dass die Segmente auch angesichts der jeweils unterschiedlichen Belastungen eine weitgehend identische Cutting tool to increase its life. On the contrary, individual segments are selectively enlarged relative to other segments in order to match the life span of all segments. Particularly heavily loaded segments can be additionally reinforced; particularly lightly loaded segments can also be reduced in their resistance, which has a direct effect on the cost of einzusetzendem raw material. On the basis of test series, it can be determined to what extent an increased formation of individual segments has to be made, so that the Cutting segments are worn as evenly as possible at all positions or have the same life as possible. The aim is therefore that the segments are largely identical even in view of the different pressures
Lebensdauer haben. Have lifespan.
Bevorzugt ist es vorgesehen, dass das zumindest eine erste Schneidsegment und das zumindest eine zweite Schneidsegment an axial gegenüberliegenden äußersten axialen Positionen des Schneidwerkzeugs angeordnet sind. Mit anderen Worten bedeutet dies: Die axial äußersten Schneidsegmente auf der einen äußersten axialen Seite sind verstärkt ausgebildet gegenüber den axial äußersten Schneidsegmente auf der anderen äußersten axialen Seite. Der Sinn dieser Maßnahme erscheint zunächst nicht offensichtlich, da die Belastung an beiden axialen Außenposition des Schneidwerkzeugs identisch erscheinen. Dies ist aber zumeist nicht der Fall. Aufgrund der asymtrischen Handhabung des It is preferably provided that the at least one first cutting segment and the at least one second cutting segment are arranged at axially opposite outermost axial positions of the cutting tool. In other words, the axially outermost cutting segments on the one outermost axial side are reinforced with respect to the axially outermost cutting segments on the other outermost axial side. The meaning of this measure does not seem obvious at first, since the load at both axial outer positions of the cutting tool appear identical. This is usually not the case. Due to the asymmetrical handling of the
Schneidwerkzeugs und der verwendeten Werkzeugmaschine lässt sich feststellen, dass eine äußerste axiale Position deutlich stärkere belastet sein kann als die andere äußerste axiale Position. Dies kann durch die Händigkeit bedingt sein, dass also z.B. Rechtshänder grundsätzlich eine stärkere Beaufschlagung der Maschine auf der rechten Seite bewirken als auf der linken Seite. Daher kann auch vorgesehen sein, dass die Schneidwerkzeuge ausdrücklich für Linkshänder und ausdrücklich für Rechtshänder ausgelegt werden, wobei dann jeweils unterschiedliche Schneidsegmente zu verstärken sind. Cutting tool and the machine tool used can be found that an outermost axial position can be much heavier loaded than the other extreme axial position. This may be due to the handedness, that is, e.g. As a matter of principle, the right-hander should exert greater force on the machine on the right-hand side than on the left-hand side. Therefore, it can also be provided that the cutting tools are expressly designed for left-handers and expressly for right-handed people, then in each case different cutting segments are to be reinforced.
In einer bevorzugten Ausgestaltung ist eines der axial äußeren Trennscheiben, mit einer größeren Stärke (also die Querschnittsdicke) ausgestattet als das andere der axial äußeren Trennscheiben. Hiermit wird zwar insgesamt eine Asymmetrie im Schneidwerkzeug hergestellt; die Asymmetrie gleicht allerdings wiederum eine unsymmetrische Arbeitsweise der Bedienperson aus. Dem Umstand geschuldet, dass die meisten Bedienpersonen Rechtshänder sind, verschleißt beispielsweise die rechte Trennscheibe stärker als die linke äußere Trennscheibe. Bei Linkshändern ist dies entsprechend umgekehrt, wie bereits ausgeführt. Für die Vergrößerung der Stärke der Trennscheibe reicht es bereits aus, wenn lediglich die Segmente in ihrer Querschnittsdicke vergrößert werden. In a preferred embodiment, one of the axially outer cutting discs, with a greater thickness (ie, the cross-sectional thickness) is equipped as the other of the axially outer cutting discs. Although this overall asymmetry in the cutting tool is made; However, the asymmetry again compensates for an asymmetrical operation of the operator. Due to the fact that most operators are right-handed, for example, the right cutting wheel wears out more heavily than the left outer cutting wheel. For left-handers, this is correspondingly reversed, as already stated. For the increase in the thickness of the cutting disc, it is sufficient if only the segments are increased in their cross-sectional thickness.
Ferner ist bevorzugt, dass die äußeren Trennscheiben eine größere Stärke aufweisen als die innenliegenden Trennscheiben. Grundsätzlich ist dabei zu berücksichtigen, dass die äußeren Segmente zumeist stärker beansprucht werden als die innenliegenden Segmente. Die äußeren Segmente bringen den außenliegenden Schnitt in das feste Mauerwerk ein. Die innenliegenden Segmente sind dafür vorgesehen, den verbleibenden Mittelsteg zwischen den außenliegenden Schnitten zu entfernen. Im Gegensatz zum festen Mauerwerk bedarf es allerdings bei der Entfernung des Mittelstegs dann nur noch eines geringen Arbeitseinsatzes, da die Stabilität des Mittelstegs durch die fehlende seitliche Unterstützung bereits reduziert ist. Auch hierfür genügt es, dass die Segmente der äußeren Trennscheiben lediglich in ihrer Querschnittsdicke vergrößert werden. Furthermore, it is preferred that the outer cutting discs have a greater thickness than the inner cutting discs. Basically, it should be noted that the outer segments are usually more stressed than the inner segments. The outer segments bring the outer cut into the solid masonry. The inner segments are intended to interpose the remaining central web to remove the outer cuts. In contrast to solid masonry, however, only a small amount of labor is required when removing the center bar, since the stability of the central bar is already reduced by the lack of lateral support. Also for this it is sufficient that the segments of the outer cutting discs are only increased in their cross-sectional thickness.
Ein vergrößert ausgebildetes Segment kann trapezartig ausgeführt sein. Die Grundseiten des Trapezes sind dabei in etwa radial ausgerichtet und in etwa parallel zueinander (der Winkelversatz aufgrund der unterschiedlichen Umfangsposition wird dabei vernachlässigt). Die in Umlaufrichtung vorne angeordnete Grundseite ist dabei länger als die rückwärtig angeordnete Grundseite. Der radial äußere Schenkel stellt dabei ein Kreisbogenabschnitt dar. Der zweite Schenkel ergibt sich dann aus der Verbindung der radial innen angeordneten Enden der Grundseiten. Es hat sich bei dieser Gestaltung der Segmente auch gezeigt, dass die verkleinert ausgebildeten Segmente sozusagen in einer Art Schatten der vergrößert ausgebildeten Segmente liegen. Dadurch ergibt sich eine nochmals günstigere Aufteilung der Verschleißbelastung auf die einzelnen Segmente. An enlarged trained segment can be designed trapezoidal. The bases of the trapezium are approximately radially aligned and approximately parallel to each other (the angular offset due to the different circumferential position is neglected). The arranged in the direction of rotation front side is longer than the rear side arranged base. The radially outer leg represents a circular arc section. The second leg then results from the connection of the radially inner ends of the bases. It has also been shown in this design of the segments that the reduced trained segments are, so to speak, in a kind of shadow of the enlarged formed segments. This results in a more favorable distribution of wear on the individual segments.
Die Erfindung wird anhand der Figur nachfolgend näher erläutert hierin zeigt The invention will be explained in more detail below with reference to the figure
Figur 1 ein erfindungsgemäßes Schneidwerkzeug Figure 1 shows an inventive cutting tool
a) in Seitenansicht,  a) in side view,
b) in Frontansicht,  b) in front view,
c) in perspektivischer Darstellung;  c) in perspective;
Figur 2 ein Teilquerschnitt durch eine Anzahl von Schneidsegmenten eines  2 shows a partial cross section through a number of cutting segments of a
alternativen Schneidwerkzeugs.  alternative cutting tool.
In Figur 1 ist ein erfindungsgemäßes Schneidwerkzeug 1 gezeigt. Dieses umfasst drei Trennscheiben 2', 2", 2"'. Die Trennscheiben 2' und 2'" sind die axial äußeren FIG. 1 shows a cutting tool 1 according to the invention. This comprises three cutting discs 2 ' , 2 ", 2"'. The cutting discs 2 'and 2'"are the axially outer
Trennscheiben; die Trennscheibe 2" ist die innenliegende Trennscheibe. Sollte das cutting discs; the cutting disc 2 "is the internal cutting disc
Schneidwerkzeug in einer alternativen Ausgestaltung nur zwei Trennscheiben aufweisen, so sind beide Trennscheiben die axial äußeren Trennscheiben: es ist dann keine innenliegende Trennscheiben vorgesehen. Schneidwerkzeuge mit mehr als drei Trennscheiben umfassen mehrere innenliegende Trennscheiben. Die erste außenliegende Trennscheibe 2' weist zwei unterschiedliche Arten von Schneidsegmenten auf, nämlich nach links herausragende Schneidsegmente 4L' und nach rechts herausragende Schneidsegmente 4R'. Beide Arten von Schneidsegmenten ragen aus der Schneidebene heraus, da ein jeweiliger Trägerbereich 8, an dem die Segmente 4 befestigt sind, gegenüber dem Stammblatt 5, welches die mittlere Schneidebene E definiert, herausgebogen sind. Der Trägerbereich müssen allerdings nicht herausgebogen sein, sondern kann auch durch anderweitige Maßnahme winklig gegenüber der Schneidebene E' an einem gemeinsamen Stammblatt 5 gehalten sein; wesentlich ist allerdings, dass die Schneidsegmente 4' allesamt aus der mittleren Schneidebene E' axial hervorstehen. Dies gilt auch für die anderen Trennscheiben. Die nach links und nach rechts herausragenden Schneidsegmente sind Umfangsrichtung abwechselnd angeordnet. Cutting tool in an alternative embodiment, only two cutting discs, both cutting discs are the axially outer cutting discs: it is then no internal cutting discs provided. Cutting tools with more than three cutting discs comprise several internal cutting discs. The first outer cutting disc 2 'has two different types of cutting segments, namely left cutting segments 4 L ' and right projecting cutting segments 4 R '. Both types of cutting segments protrude from the cutting plane, since a respective carrier region 8, to which the segments 4 are fastened, are bent over the master blade 5, which defines the central cutting plane E. However, the support area need not be bent out, but can also be held by other means at an angle to the cutting plane E 'on a common master sheet 5; however, it is essential that the cutting segments 4 'all protrude axially from the central cutting plane E'. This also applies to the other cutting discs. The left and right projecting cutting segments are arranged alternately in the circumferential direction.
Die nach links herausragenden Schneidsegmente 4L' stellen aufgrund ihres axialen The protruding left cutting segments 4 L 'due to their axial
Herausragens nach außen aus der äußersten mittleren Schneidebene E' zugleich auch die axial außenliegenden Schneidsegmente des gesamten Schneidwerkzeugs 1 dar und werden im Folgenden auch mit dem Bezugszeichen 4A' versehen (Index A für Außen). Im Gegensatz dazu steilen die nach rechts herausragenden Schneidsegmente 4R' der ersten Trennscheibe 4' innenliegende Schneidsegmente dar, die auch mit dem Bezugszeichen 4 versehen werden (Index I für Innen). Analog zur Trennscheibe 2' weisen auch die anderen beiden Trennscheiben 2" und 2"' Schneidsegmente 4L\ 4L" bzw. 4R\ 4R" auf, die entweder links bzw. nach rechts aus den jeweils mittleren Schneidebenen E" und E'" herausragen. Outwardly outwardly of the outermost central cutting plane E 'at the same time also the axially outer cutting segments of the entire cutting tool 1 and are in the following also with the reference numeral 4 A ' provided (index A for outside). In contrast, projecting to the right cutting segments 4 R 'of the first cutting disc 4' steep inside cutting segments, which are also provided with the reference numeral 4 (index I for inside). Analogously to the cutting disk 2 ', the other two cutting disks 2 "and 2"' cutting segments 4 L \ 4 L "and 4 R \ 4 R ", either left or right from the respective average cutting planes E "and E 'stand out.
Abweichend zur Trennscheibe 2' stellen allerdings die nach rechts herausragenden Deviating from the cutting disc 2 ', however, the outstanding to the right
Schneidsegment 4R'" die an der dritten Trennscheibe vorhandenen axial außenliegenden Schneidsegmente 4A '" des Schneidwerkzeugs 1 dar, welche zusätzlich auch mit dem Cutting segment 4 R '"present on the third cutting disc axially outer cutting segments 4 A ' " of the cutting tool 1, which in addition to the
Bezugszeichen 4A'" bezeichnet sind. Sämtliche der Schneidsegmente 4L", 4R" der mittleren Trennscheibe 2" werden allesamt auch als innenliegende Schneidsegmente 4," bezeichnet, unabhängig ob sie nach links oder nach rechts herausragen, da sie keine axial Reference numeral 4 A ", respectively. All of the cutting segments 4 L" ', 4 R "of the central cutting wheel 2' are all as internal cutting segments 4 are denoted ', regardless of whether they protrude to the left or to the right, having no axial
außenliegenden Schneidsegmente des Schneidwerkzeugs 1 sind. outer cutting segments of the cutting tool 1 are.
Die axial außenliegenden Schneidsegmente 4A' und 4A '" sind die am stärksten belasteten Schneidsegmente des Schneidwerkzeugs 1. Diese sind vergrößert gegenüber den anderen Segmenten ausgebildet. Wie insbesondere anhand Figur 1 b zu erkennen ist weisen diese äußersten Schneidsegmente 4A', was gleichermaßen auch für die nicht zu erkennenden Schneidsegmente 4A"' gilt, eine in Seitenansicht trapezartig gestaltete Form auf. Eine in Umlauf richtung U vorderseitige Grundseite 6 dieses Trapezes ist länger als eine in The axially outer cutting segments 4 A 'and 4 A '" are the most heavily loaded cutting segments of the cutting tool 1. These are formed enlarged with respect to the other segments As can be seen in particular from Figure 1 b, these outermost cutting segments 4 A ', what equally even for the unrecognizable cutting segments 4 A "'applies, a trapezoidal shaped in side view shape. A in circulation direction U front-side base 6 of this trapezoid is longer than one in
Umlaufrichtung rückwärtige Grundseite 7 des Trapezes. Die Schenkel werden zum einen durch die umlaufende Begrenzungskante 10 des Schneidsegments 4 gebildet; zum anderen durch die Trennlinie 1 1 zwischen Trägerbereich 8 und Segment 4, also Verbindunbgslinie der anderen der beiden innenliegenden Enden der Grundseiten 6 und 7. Die innenliegenden Segmente 4 sind im Wesentlichen ringförmig gestaltet, mit konstanter radialer Dimension über der Umfangserstreckung. Die Ausgestaltung der innenliegenden Segmente 4t", 4 " der zweiten und dritten Trennscheiben 2", 2'" entspricht der Ausgestaltung der innenliegenden Segmente 4 ", 4 " der ersten Trennscheibe 2'. Die Begriffe radial und parallel sind im Zusammenhang mit der trapezartigen Ausgestaltung breit auszulegen und sollen die Grobausrichtung anzeigen. Die Begriffe können auch eine leichte Krümmung mit umfassen, also keine exakt geradlinige Ausbildung. Circumferential direction rear base side 7 of the trapezoid. The thighs become one formed by the peripheral boundary edge 10 of the cutting segment 4; on the other hand by the dividing line 1 1 between the carrier area 8 and 4 segment, ie Verbindunbgslinie the other of the two inner ends of the bases 6 and 7. The inner segments 4 are designed substantially annular, with a constant radial dimension over the circumferential extent. The configuration of the inner segments 4 t ", 4" of the second and third cutting disks 2 ", 2 '" corresponds to the configuration of the inner segments 4 ", 4" of the first cutting disk 2'. The terms radial and parallel are to be interpreted broadly in connection with the trapezoidal design and are intended to indicate the coarse alignment. The terms can also include a slight curvature, so no exactly rectilinear training.
Figur 2 zeigt eine alternative Ausgestaltung, die weitgehend der Ausgestaltung nach Figur 1 entspricht. Es sind der Einfachheit halber nur Querschnitte von drei Segmenten pro Figure 2 shows an alternative embodiment, which largely corresponds to the embodiment of Figure 1. For the sake of simplicity, they are only cross sections of three segments per
Trennscheibe gezeigt, die stellvertretend für alle weiteren Segmente des jeweiligen Cutting disc shown, which is representative of all other segments of the respective
Schneidwerkzeugs stehen. Zur weiteren Verdeutlichung sind die als inneniiegend bezeichneten und die als außenliegend bezeichneten Schneidsegmente unterschiedlich schraffiert. Es ist dadurch bereits bildlich zu erkennen, dass lediglich eine kleine Anzahl der Schneidsegmente verstärkt ausgebildet ist. Stand cutting tool. For further clarification, the designated as inneniiegend and referred to as external cutting segments are hatched differently. As a result, it can already be seen pictorially that only a small number of the cutting segments are reinforced.
Die Darstellung nach der Figur 2 entspricht dem Grunde nach einem Schnitt, wie er in Figur 1 durch die Verbindungslinie II-II angedeutet ist. Abweichend zu der Ausgestaltung nach Figur 1 sind nicht nur nach links und nach rechts herausragende Segmente 4L und 4R vorhanden, sondern auch mittlere Schneidsegmente 4Μ', 4M", 4M"' vorgesehen, welche nicht versetzt angeordnet sind zur jeweiligen mittleren Schneidebene E. Auch solche The illustration according to FIG. 2 basically corresponds to a section as indicated in FIG. 1 by the connecting line II-II. Notwithstanding the embodiment of Figure 1 not only left and right outstanding segments 4 L and 4 R are present, but also average cutting segments 4 Μ ', 4 M ", 4 M "' provided, which are not staggered to the respective middle Cutting plane E. Also such
Schneidsegmente werden als innenliegende Schneidsegment 4, bezeichnet. Die Cutting segments are referred to as internal cutting segment 4. The
Ausgestaltung der mittleren Schneidsegmente 4M'. 4M", 4M" ist identisch zu den bereits beschriebenen übrigen innenliegenden Schneidsegmenten 4). Die Maßnahmen, die zur Verstärkung des gesamten Schneidwerkzeugs beitragen, erfordern folglich nur eine vergrößerte Ausbildung an einer recht kleinen Anzahl von Segmenten und sind daher deutlich günstiger durchzuführen, als das pauschale Verstärken sämtlicher Trennscheiben bzw. sämtlicher Segmente von sämtlichen Trennscheiben. Design of the middle cutting segments 4 M '. 4 M ", 4 M " is identical to the other internal cutting segments 4 already described. The measures that contribute to the reinforcement of the entire cutting tool, therefore, require only an enlarged training on a fairly small number of segments and are therefore much cheaper to perform, than the overall reinforcement of all cutting discs or all segments of all cutting discs.
Alternativ oder in Kombination kann ein Segment 4A gegenüber einem anderen Segment 4, auch dadurch verstärkt ausgebildet werden, in dem die Segmente in ihrem Querschnitt dicker sind. Bezugszeichenliste Alternatively or in combination, a segment 4 A can also be formed reinforced relative to another segment 4, also in that the segments are thicker in their cross section. LIST OF REFERENCE NUMBERS
1 Schneidwerkzeug1 cutting tool
2 Trennscheibe 2 cutting disc
3 Segmentlücke  3 segment gap
4 Schneidsegment 4 cutting segment
5 Stammblatt 5 master sheet
6 vorderseitige Grundseite 6 front basic page
7 rückseitige Grundseite7 back ground side
8 Trägerbereich 8 carrier area
10 Schenkel  10 thighs
1 1 Schenkel  1 1 thigh
E mittlere SchneidebeneE middle cutting plane
U Umlaufrichtung U circulation direction
A Drehachse  A rotation axis

Claims

Ansprüche claims
1 . Schneidwerkzeug (1) mit mehreren Trennscheiben (2), insbesondere 1 . Cutting tool (1) with a plurality of cutting discs (2), in particular
Diamanttrennscheiben,  Diamond blades,
wobei die Trennscheiben (2) koaxial entlang einer gemeinsamen Drehachse (A) benachbart zueinander angeordnet sind,  wherein the cutting discs (2) are arranged coaxially along a common axis of rotation (A) adjacent to each other,
wobei jede Trennscheibe (2) wiederum ein Stammblatt (5) mit mehreren über den Umfang des Stammblattes (5) verteilten Schneidsegmenten (4) umfasst,  wherein each cutting disc (2) in turn comprises a master blade (5) with a plurality of cutting segments (4) distributed over the circumference of the master blade (5),
wobei jedes Stammblatt (5) eine mittlere Schneidebene (E) definiert,  each master blade (5) defining a central cutting plane (E),
wobei zumindest einige der Schneidsegmente aus der mittleren Schneidebene (E) axial herausragen,  wherein at least some of the cutting segments protrude axially from the central cutting plane (E),
wobei zwischen zwei in Umlaufrichtung (U) benachbarten Schneidsegmenten (4) einer Trennscheibe (2) jeweils eine Segmentlücke (3) verbleibt,  wherein in each case one segment gap (3) remains between two cutting segments (4) of a separating disk (2) which are adjacent in the direction of circulation (U),
dadurch gekennzeichnet,  characterized,
dass zumindest ein erstes der Schneidsegmente, welches in einer ersten axialen Position angeordnet ist, vergrößert ausgebildet ist gegenüber einem zweiten  in that at least a first of the cutting segments, which is arranged in a first axial position, is enlarged relative to a second one
Schneidsegment, das in einer zweiten axialen Position angeordnet ist, die von der ersten axialen Position abweicht.  Cutting segment, which is arranged in a second axial position, which deviates from the first axial position.
2. Schneidwerkzeug nach dem vorherigen Anspruch, 2. Cutting tool according to the preceding claim,
dadurch gekennzeichnet,  characterized,
dass sämtliche Schneidsegmente (4A), die an der ersten axialen Position angeordnet sind, identisch vergrößert ausgebildet sind gegenüber sämtlichen Schneidsegmenten 4|, die an der zweiten axialen Position angeordnet sind. that all cutting segments (4 A ), which are arranged at the first axial position, identically enlarged are formed with respect to all cutting segments 4, which are arranged at the second axial position.
3. Schneidwerkzeug nach einem der vorherigen Ansprüche, 3. Cutting tool according to one of the preceding claims,
dadurch gekennzeichnet,  characterized,
dass das erste Schneidsegment (4Α') und das zweite Schneidsegment (4Α') jeweils an axial gegenüberliegenden außenliegenden Position des Schneidwerkzeugs (1 ) angeordnet sind. in that the first cutting segment (4 Α ') and the second cutting segment (4 Α ') are each arranged at axially opposite outer positions of the cutting tool (1).
4. Schneidwerkzeug nach dem vorherigen Anspruch, 4. Cutting tool according to the previous claim,
dadurch gekennzeichnet,  characterized,
dass die vergrößert ausgebildeten Schneidsegmente (6Ά) in Seitenansicht trapezartig ausgebildet sind, wobei die Grundseiten (8, 7) Seiten des Trapez radial ausgerichtet sind und die in Umlaufrichtung (U) vorne angeordnete Grundseite (6) länger ist als die rückwärtig angeordnete Grundseite (7).  that the enlarged formed cutting segments (6Ά) are formed trapezoidal in side view, wherein the base sides (8, 7) sides of the trapezoid are radially aligned and in the direction of rotation (U) arranged at the front side (6) is longer than the rearwardly arranged base side (7 ).
EP14781087.3A 2013-09-12 2014-09-09 Cutting tool Active EP3043962B1 (en)

Applications Claiming Priority (2)

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DE102013110009.0A DE102013110009B3 (en) 2013-09-12 2013-09-12 cutting tool
PCT/EP2014/069127 WO2015036377A1 (en) 2013-09-12 2014-09-09 Cutting tool

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EP3043962A1 true EP3043962A1 (en) 2016-07-20
EP3043962B1 EP3043962B1 (en) 2017-05-03

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US (1) US9902043B2 (en)
EP (1) EP3043962B1 (en)
JP (1) JP6382987B2 (en)
KR (1) KR20160054551A (en)
CN (1) CN105636747B (en)
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WO (1) WO2015036377A1 (en)

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Also Published As

Publication number Publication date
EP3043962B1 (en) 2017-05-03
JP2016530113A (en) 2016-09-29
CN105636747B (en) 2018-05-29
DE102013110009B3 (en) 2015-02-05
WO2015036377A1 (en) 2015-03-19
US20160221154A1 (en) 2016-08-04
US9902043B2 (en) 2018-02-27
JP6382987B2 (en) 2018-08-29
CN105636747A (en) 2016-06-01
KR20160054551A (en) 2016-05-16

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