EP1174207B1 - Disque de coupe à ouvertures d'inertie - Google Patents

Disque de coupe à ouvertures d'inertie Download PDF

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Publication number
EP1174207B1
EP1174207B1 EP01115411A EP01115411A EP1174207B1 EP 1174207 B1 EP1174207 B1 EP 1174207B1 EP 01115411 A EP01115411 A EP 01115411A EP 01115411 A EP01115411 A EP 01115411A EP 1174207 B1 EP1174207 B1 EP 1174207B1
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EP
European Patent Office
Prior art keywords
cutting disk
inertia
cutting
holes
curvature
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
EP01115411A
Other languages
German (de)
English (en)
Other versions
EP1174207A1 (fr
Inventor
Wolfgang Reul
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.)
Individual
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Individual
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Filing date
Publication date
Priority claimed from DE10035435A external-priority patent/DE10035435C2/de
Application filed by Individual filed Critical Individual
Publication of EP1174207A1 publication Critical patent/EP1174207A1/fr
Application granted granted Critical
Publication of EP1174207B1 publication Critical patent/EP1174207B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B28D1/121—Circular saw blades

Definitions

  • the invention relates to a cutting wheel for machining, in particular for the dry cutting of hard building materials, such as rock, concrete, brick, limestone, masonry or the like, wherein the cutting disc has a diameter of at least 500 mm and a plurality of circumferentially spaced and spaced by spokes Inertia has.
  • the present invention has for its object to reduce the moment of inertia by providing recesses referred to as inertial recesses in a much more effective manner.
  • a key idea of the present invention is that in a cutting disc, an outer ring zone having a radial ring width of at most 18% of the total radius of the cutting disc, which is bounded inwardly by the outermost point of the inertia recesses and cutting means in the outer region, and a central clamping ring with a central clamping opening, the central clamping ring extending to the radially innermost point of an inertia recess, the radial ring width of the central clamping ring being at most 25% of the total radius of the cutting disc; and wherein the area ratio of the inertia recesses at the circular area defined by the outer circumference of the blade is at least 30%.
  • the inertia recesses are bounded by a peripheral edge, wherein the peripheral edge has at least two curvature maxima.
  • the arrangement of inertia recesses and spokes is made so that this direction of rotation is already taken into account.
  • the spokes on a general idea on a curved to the radial direction of the cutting disc course.
  • the area ratio of the inertia recesses at the outer periphery is the cutting disc defined circular area at least 33%, preferably more than 40%.
  • the first curvature maximum at the radially innermost point and the second curvature maximum at the radially outermost point are arranged.
  • the circumferential edge has a curved course between the maximum curvatures at least on one side, preferably on both sides. Especially at the radially innermost point is to be considered that the radius of curvature maximum is not too small, otherwise undesirable high material loads or even cracks occur.
  • the circumferential edge of the inertia exceptions comprises three spatially separated maximum curvatures, so that there is a remotely pronounced of a triangle shape.
  • the spokes between the inertial recesses have a tapered region. It has been found that, in the present embodiment, stresses occur particularly near the radially innermost point and the radially outermost point of the inertia recesses. In the area between, which is connected by the spokes, a taper of the spokes can be tolerated for stability and vibration considerations.
  • the radial ring width of the central clamping ring is at most 20% of the total radius of the cutting disc.
  • the outer ring zone has a radial ring width of at most 16% of the total radius of the cutting disk.
  • the inertia recesses are of approximately kidney-shaped design. This course of the inertia recesses has proven to be particularly favorable in terms of weight reduction, stability and vibration behavior of the cutting disc.
  • a particular aspect of the present invention is the fact that a particular hand-held cutter for machining hard building materials such as rock, concrete, brick, masonry or the like is equipped with a cutting wheel according to the invention, so that the processing due to the much reduced Torque is much easier.
  • the spokes 12 extend between a central clamping ring 17, which has a central clamping opening 21 and an outer ring zone 18, which is on its outside with cutting means 22, such as diamond splinters, etc. occupied.
  • a tapered portion 16 is formed so that on an imaginary peripheral circle 24 through this tapered portion 16 and concentric with the central clamping aperture 21, the ratio of the total width of the spokes 12 and the entire width of the inertia 11 is particularly small ,
  • the inertia recesses 11 have an approximately kidney-shaped shape, wherein a peripheral edge 14 defines a total of three curvature maxima, namely an inner curvature maximum A, a lateral curvature maximum B and an outer curvature maximum C All portions between these curvature maxima A, B, C in the present embodiment extend as unidirectionally curved portions, respectively.
  • a preferred direction is defined, so that the blade should be operated in a direction of rotation 25, in which the outer maximum curvature C is located.
  • the inner maximum curvature A is particularly critical because too small a radius of curvature can cause cracking.
  • the innermost maximum curvature A should have a radius of curvature of at least about 17 mm.
  • FIG. 2 illustrates, in a sketchy diagram, the percentage weight reduction at a specific radius-dependent imaginary peripheral circle 24, the radial structure of the separating disk 13 being readily understandable. Within the innermost 25% of the radius can be meaningfully no significant weight reduction compared to conventional cutting discs achieve. It should also be noted that here, a weight reduction with respect to the moment of inertia does not affect as much longitudinally as in regions of greater radial distance from the center of the central tensioning opening 21.
  • the cutting disk 13 further forms the outer ring zone 18 provided with the cutting means 22, so that virtually no meaningful weight reduction is possible in this area either.
  • inertia recesses 11 can be incorporated, which allow a considerable reduction in weight, at certain radius positions over 80%. Since this weight reduction is also carried out in the range of larger radii, the moment of inertia can be significantly reduced.
  • Fig. 3 is still a hand-held cutter for machining, especially for the dry cutting of hard building materials such as rock, concrete, brick, sand-lime brick, masonry or the like shown that a partially housed in a protective housing 23 cutting disc 13 with inertia recesses 11 according to the invention illustrated.
  • the protective housing 23 is divided in the embodiment shown in a guide housing 19 and a protective cover 20 which are pivotally mounted against each other, so that the guide housing 19 completely covers the blade 13 in the rest position. In the working position, however, the protective hood 20 is pivoted into the guide housing 19 in such a way that the cutting disc 13 projects in regions over the guide housing 19 (cf., Fig. 3) and a processing of building materials is made possible.
  • Such a particular hand-held cutting device with a cutting wheel according to the invention will open up a wide range of applications.
  • the transformation of building materials, especially in residential construction in solid construction calls for new construction more than ever sawing techniques in the processing of bricks.
  • the previously used, hitting processing methods, such as The hewing with masonry hammer can no longer be used in today's bricks for a variety of reasons.
  • Also in the renovation of old buildings or modernization is due to the static problems and possibly cracking the use of compressors with chisel tools or other beating tools rather rejected. For this reason, building experts are increasingly favoring the use of sawing techniques for the processing of building materials, in particular bricks and masonry.
  • a cutting disc is proposed according to the invention, which leads straight to a hand-held cutting device to considerable advantages and bricks in a cut can sever.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Sawing (AREA)

Claims (11)

  1. Disque de coupe pour le travail, en particulier pour la coupe à sec de matériaux de construction durs, tels que la pierre, le béton, la tuile, la brique, la maçonnerie ou similaire,
    le disque de coupe (13) présentant un diamètre d'au moins 500 mm et un grand nombre d'ouvertures d'inertie (11) disposées dans le sens périphérique et distancées par des rayons (11),
    - le disque de coupe (13) présentant une zone annulaire externe (18) qui est limitée vers l'intérieur par le point le plus à l'extérieur des ouvertures d'inertie (11) et qui préente dans la zone externe des moyens de coupe (22), cette zone annulaire externe (18) présentant une largeur annulaire d'au mois 18 % de l'ensemble du rayon du disque de coupe (13);
    - le disque de coupe (13) présentant une bague centrale de serrage (17) avec une ouverture de serrage centrale (21), la bague de serrage centrale (17) s'étendant jusqu'au point radialement le plus à l'intérieur d'une ouverture d'inertie (11), la largeur radiale annulaire de la bague centrale de serrage (17) représentant au plus 25 % de l'ensemble du rayon du disque de coupe (13);
    - et la partie de surface des ouvertures d'inertie (11) de la surface de cercle définie par la périphérie externe du disque de coupe (13) étant d'au moins 30 %.
  2. Disque de coupe selon la revendication 1, caractérisé en ce que les ouvertures d'inertie (11) sont limitées par un bord circulaire (14) et le bord circulaire (14) présentant au moins deux maximums de courbes (A, B, C).
  3. Disque de coupe selon la revendication 1 ou 2, caractérisé en ce que les rayons (12) présentent une courbe arquée dans le sens radial du disque de coupe (13).
  4. Disque de coupe selon l'une des revendications 1 à 3, caractérisé en ce que la partie de surface des ouvertures d'inertie (11) de la surface circulaire définie par la périphérie externe du disque de coupe (13) est d'au moins 33 %, de préférence plus de 40 %.
  5. Disque de coupe selon l'une des revendications 1 à 4, caractérisé en ce que le premier maximum de courbure (A) est disposé sur le point radialement le plus intérieur et le second maximum de courbure (C) sur le point radialement le plus à l'extérieur et, entre les deux maximums de courbure (A, C), le bord circulaire (14) présente au moins sur une face, de préférence sur les deux faces une courbure incurvée.
  6. Disque de coupe selon la revendication 5, caractérisé en ce que le bord circulaire (14) d'une ouverture d'inertie (11) présente trois maximums de courbure séparés spatialement (A, B, C).
  7. Disque de courbe selon l'une des revendications 1 à 6, caractérisé en ce que les rayons (12) entre les ouvertures d'inertie (11) présentent une zone rétrécie en cône.
  8. Disque de courbe selon l'une des revendications 1 à 7, caractérisée en ce que la largeur radiale annulaire de la bague centrale de serrage (17) est de maximum 20 % de l'ensemble du rayon du disque de coupe.
  9. Disque de coupe selon l'une des revendications 1 à 8, caractérisé en ce que la zone annulaire externe (18) présente une largeur annulaire radiale au plus de 16 % de l'ensemble du rayon du disque de coupe (13).
  10. Disque de coupe selon l'une des revendications précédentes, caractérisé en ce que les ouvertures d'inertie (11) présentent une forme sensiblement réniforme.
  11. Appareil de coupe pour le travail, en particulier pour la coupe à sec de matériaux de construction durs, tels que la pierre, le béton, la tuile, la brique, la maçonnerie ou similaire, qui comprend un disque de coupe (13) selon l'une des revendications 1 à 9, logé au moins partiellement dans un carter de protection (23).
EP01115411A 2000-07-20 2001-06-26 Disque de coupe à ouvertures d'inertie Expired - Lifetime EP1174207B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10035435A DE10035435C2 (de) 1999-08-25 2000-07-20 Trennscheibe für ein Schneidgerät, insbesondere für ein Trockenschneidgerät, zum Schneiden von harten Baumaterialien
DE10035435 2000-07-20

Publications (2)

Publication Number Publication Date
EP1174207A1 EP1174207A1 (fr) 2002-01-23
EP1174207B1 true EP1174207B1 (fr) 2006-10-25

Family

ID=7649663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01115411A Expired - Lifetime EP1174207B1 (fr) 2000-07-20 2001-06-26 Disque de coupe à ouvertures d'inertie

Country Status (3)

Country Link
EP (1) EP1174207B1 (fr)
AT (1) ATE343450T1 (fr)
DE (1) DE50111301D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2641696B2 (fr) † 2012-03-13 2017-09-06 Dr. Müller Diamantmetall AG Outil destiné au traitement de matériaux

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2625995A1 (de) * 1976-06-10 1977-12-22 Wurster & Dietz Maschinenfabri Kreissaegeblatt
DE2703825A1 (de) * 1977-01-31 1978-08-03 Felde Richard Fa Kreissaegeblatt
DE2717935A1 (de) * 1977-04-22 1978-10-26 Koenig J Gmbh & Co Werkzeugfab Kreissaegeblatt mit aussparungen zum spannungsausgleich
FI771847A7 (fi) * 1977-06-13 1978-12-14 Ahlstroem Oy Saogmaskin
DE19638718C1 (de) * 1996-09-21 1997-10-16 Betek Bergbau & Hartmetall Sägeblatt für eine Vorrichtung zum Schneiden von Verkehrs-oder Standflächen
DE29901713U1 (de) * 1999-02-01 2000-06-29 Powertools International GmbH, 25474 Ellerbek Sägeblatt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2641696B2 (fr) † 2012-03-13 2017-09-06 Dr. Müller Diamantmetall AG Outil destiné au traitement de matériaux

Also Published As

Publication number Publication date
DE50111301D1 (de) 2006-12-07
EP1174207A1 (fr) 2002-01-23
ATE343450T1 (de) 2006-11-15

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