EP3043962B1 - Outil de coupe - Google Patents

Outil de coupe Download PDF

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Publication number
EP3043962B1
EP3043962B1 EP14781087.3A EP14781087A EP3043962B1 EP 3043962 B1 EP3043962 B1 EP 3043962B1 EP 14781087 A EP14781087 A EP 14781087A EP 3043962 B1 EP3043962 B1 EP 3043962B1
Authority
EP
European Patent Office
Prior art keywords
cutting
segments
disposed
segment
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.)
Active
Application number
EP14781087.3A
Other languages
German (de)
English (en)
Other versions
EP3043962A1 (fr
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.)
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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/fr
Application granted granted Critical
Publication of EP3043962B1 publication Critical patent/EP3043962B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12—Cut-off wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/12—Cut-off wheels
    • B24D5/123—Cut-off wheels having different cutting segments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/06—Grinders for cutting-off

Definitions

  • the invention relates to a cutting tool with a plurality of segment cutting discs.
  • Cutting discs are known for creating wide notches in walls of more than 5mm.
  • the circumference of a master blade is provided with several cutting segments.
  • 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.
  • 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.
  • the cutting discs of such a cutting tool wear different degrees. If one of the cut-off wheels is worn, the entire cutting tool can no longer be used. This is all the more regrettable because the remaining, not yet worn cut-off wheels remain functional on their own but still become useless. In this respect, this problem is accompanied by a certain waste of raw materials, which 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.
  • the cutting tool 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.
  • the cutting discs are segmented 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.
  • the cutting segment is understood to mean, in particular, the region of the cutting disk which is fastened radially on the outside to a carrier region and comprises a grinding-active material.
  • the core of the invention is based in particular on the knowledge that 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 amplification magnification affects only those few cutting segments that are subject to increased high wear. It is therefore deliberately refrained from increasing its life by a sweeping reinforcement of the cutting tool.
  • 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 einthedem raw 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.
  • 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 asymetric handling of the cutting tool and the machine tool used, it can be seen that an outermost axial position can be much heavier loaded than the other outermost axial position. This may be due to the handedness, that is, e.g.
  • 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.
  • 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.
  • 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.
  • 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.
  • an inventive cutting tool 1 is shown. This comprises three cutting discs 2 ', 2 ", 2"'.
  • the cutting discs 2 'and 2'" are the axially outer cutting discs; the cutting disc 2" is the internal cutting disc. If, in an alternative embodiment, the cutting tool has only two cutting discs, then both cutting discs are the axially outer cutting discs; It is then provided no internal cutting discs.
  • 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.
  • the cutting segments 4 R '"protruding to the right represent the axially outer cutting segments 4 A "'of the cutting tool 1, which are additionally designated by the reference numeral 4 A “' 4 L “, 4 R “ of the middle cutting disc 2 "are all also referred to as internal cutting segments 4 I ", regardless of whether they protrude to the left or to the right, since they are not axially outer cutting segments of the cutting tool 1.
  • 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 relative to the other segments FIG. 1b As can be seen, these outermost cutting segments 4 A ', which also apply equally to the unrecognizable cutting segments 4 A '', have a trapezoidal shape in side view A base side 6 of this trapezoid facing in the direction of rotation U is longer than a rearward one in the direction of rotation Bottom side 7 of the trapezium, the thighs become one formed by the peripheral boundary edge 10 of the cutting segment 4; on the other hand by the dividing line 11 between carrier region 8 and segment 4, thus croqusunbgsline the other of the two inner ends of the bases 6 and 7.
  • the inner segments 4 I ' are designed substantially annular, with a constant radial dimension over the circumferential extent.
  • the configuration of the inner segments 4 I “, 4 I “'of the second and third cutting discs 2 ", 2'” corresponds to the configuration of the inner segments 4 I “, 4 I “'of the first cutting disc 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.
  • FIG. 2 shows an alternative embodiment, which is largely the embodiment FIG. 1 equivalent.
  • FIG. 2 shows an alternative embodiment, which is largely the embodiment FIG. 1 equivalent.
  • FIG. 2 shows an alternative embodiment, which is largely the embodiment FIG. 1 equivalent.
  • FIG. 2 shows an alternative embodiment, which is largely the embodiment FIG. 1 equivalent.
  • FIG. 2 shows an alternative embodiment, which is largely the embodiment FIG. 1 equivalent.
  • FIG. 2 shows only cross-sections of three segments per cutting disc are shown, which are representative of all other segments of the respective cutting tool.
  • the cutting segments designated as internal and those designated as external are differently hatched.
  • the representation after the FIG. 2 basically corresponds to a cut, as in FIG. 1 is indicated by the connecting line II-II.
  • Deviating from the embodiment according to FIG. 1 Not only are left and right protruding segments 4 L and 4 R available, but also middle cutting segments 4 M ', 4 M “, 4 M “' provided, which are not staggered to the respective central cutting plane E. Such cutting segments are referred to as internal cutting segment 4 I.
  • the design of the middle cutting segments 4 M ', 4 M “, 4 M " is identical to the other internal cutting segments 4 I 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 compared to another segment 4 I also be formed reinforced, in which the segments are thicker in cross-section.

Landscapes

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

Claims (4)

  1. Outil de coupe (1) avec plusieurs meules de tronçonnage (2), en particulier des meules de tronçonnage diamantées,
    dans lequel les meules de tronçonnage (2) sont disposées coaxialement le long d'un axe de rotation (A) commun de manière adjacente les unes des autres,
    dans lequel chaque meule de tronçonnage (2) comprend à son tour un corps de lame (5) avec plusieurs segments de coupe (4) répartis sur la périphérique du corps de lame (5),
    dans lequel chaque corps de lame (5) définit un plan de coupe central (E),
    dans lequel au moins certains des segments de coupe dépassent axialement du plan de coupe central (E),
    dans lequel il subsiste, entre deux segments de coupe (4) adjacents en direction périphérique (U) d'une meule de tronçonnage (2), respectivement un interstice de segment (3),
    caractérisé en ce
    qu'au moins un premier des segments de coupe qui est disposé dans une première position axiale est réalisé de manière agrandie par rapport à un deuxième segment de coupe qui est disposé dans une deuxième position axiale qui diverge de la première position axiale.
  2. Outil de coupe selon la revendication précédente,
    caractérisé en ce
    que l'ensemble des segments de coupe (4A) qui sont disposés au niveau de la première position axiale sont réalisés de manière agrandie de façon identique par rapport à l'ensemble des segments de coupe 4i qui sont disposés au niveau de la deuxième position axiale.
  3. Outil de coupe selon l'une des revendications précédentes,
    caractérisé en ce
    que le premier segment de coupe (4A') et le deuxième segment de coupe (4A') sont respectivement disposés au niveau d'une position extérieure située axialement en vis-à-vis de l'outil de coupe (1).
  4. Outil de coupe selon la revendication précédente,
    caractérisé en ce
    que les segments de coupe réalisés de manière agrandie (6'A) sont réalisés à la manière d'un trapèze en vue de côté, dans lequel les côtés de base (6, 7) du trapèze sont orientés radialement, et le côté de base (6) disposé à l'avant en direction périphérique (U) étant plus long que le côté de base (7) disposé à l'arrière.
EP14781087.3A 2013-09-12 2014-09-09 Outil de coupe Active EP3043962B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013110009.0A DE102013110009B3 (de) 2013-09-12 2013-09-12 Schneidwerkzeug
PCT/EP2014/069127 WO2015036377A1 (fr) 2013-09-12 2014-09-09 Outil de coupe

Publications (2)

Publication Number Publication Date
EP3043962A1 EP3043962A1 (fr) 2016-07-20
EP3043962B1 true EP3043962B1 (fr) 2017-05-03

Family

ID=51662057

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14781087.3A Active EP3043962B1 (fr) 2013-09-12 2014-09-09 Outil de coupe

Country Status (7)

Country Link
US (1) US9902043B2 (fr)
EP (1) EP3043962B1 (fr)
JP (1) JP6382987B2 (fr)
KR (1) KR20160054551A (fr)
CN (1) CN105636747B (fr)
DE (1) DE102013110009B3 (fr)
WO (1) WO2015036377A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106002657A (zh) * 2016-07-06 2016-10-12 苏州星球精密工具有限公司 一种磨削用金刚石砂轮
US20180147745A1 (en) * 2016-11-28 2018-05-31 Diamond Products, Limited Blade head, blade and method for eliminating spacers in multiple blade stacks
CN108127578A (zh) * 2016-12-01 2018-06-08 侯家祥 一种水泥地坪、花岗石干磨地机磨块
JP6990544B2 (ja) * 2017-09-13 2022-01-12 株式会社ディスコ 研削ホイール及び研削装置
WO2019233321A1 (fr) 2018-06-05 2019-12-12 沈阳化工大学 Composé de benzène substitué par un thioéther trifluoroéthyle (sulfoxyde) et utilisation associée

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Also Published As

Publication number Publication date
CN105636747A (zh) 2016-06-01
DE102013110009B3 (de) 2015-02-05
US9902043B2 (en) 2018-02-27
CN105636747B (zh) 2018-05-29
KR20160054551A (ko) 2016-05-16
JP2016530113A (ja) 2016-09-29
JP6382987B2 (ja) 2018-08-29
EP3043962A1 (fr) 2016-07-20
WO2015036377A1 (fr) 2015-03-19
US20160221154A1 (en) 2016-08-04

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