EP2335877B1 - Meule à éventail pour l'utilisation sur des meuleuses stationnaires - Google Patents

Meule à éventail pour l'utilisation sur des meuleuses stationnaires Download PDF

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Publication number
EP2335877B1
EP2335877B1 EP10190651.9A EP10190651A EP2335877B1 EP 2335877 B1 EP2335877 B1 EP 2335877B1 EP 10190651 A EP10190651 A EP 10190651A EP 2335877 B1 EP2335877 B1 EP 2335877B1
Authority
EP
European Patent Office
Prior art keywords
edge
grinding
central axis
corner
compartment
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.)
Not-in-force
Application number
EP10190651.9A
Other languages
German (de)
English (en)
Other versions
EP2335877A3 (fr
EP2335877A2 (fr
Inventor
Olaf Schweitzer
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.)
August Rueggeberg GmbH and Co KG
Original Assignee
August Rueggeberg 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 August Rueggeberg GmbH and Co KG filed Critical August Rueggeberg GmbH and Co KG
Priority to PL10190651T priority Critical patent/PL2335877T3/pl
Publication of EP2335877A2 publication Critical patent/EP2335877A2/fr
Publication of EP2335877A3 publication Critical patent/EP2335877A3/fr
Application granted granted Critical
Publication of EP2335877B1 publication Critical patent/EP2335877B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B24D13/16—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face comprising pleated flaps or strips

Definitions

  • the invention relates to a fan grinding wheel for use on stationary grinding machines.
  • a fan-grinding wheel according to the preamble of claim 1 which has a radially to the central axis extending leading edge and - with respect to the working direction of rotation - trailing from the inner edge to the outer edge trailing edge.
  • the service life and removal rate of this fan grinding wheel is unsatisfactory.
  • a lamella grinding wheel is known in which the lamellae are originally formed square with straight boundary edges.
  • the outer edges of the slats are produced by stamping out the lamella grinding disk, which is finished in itself, by means of a circular punching tool, as a result of which the individual slats receive a circular outer edge.
  • the leading edge of the lamellae extending from the inner edge to the outside is advanced in relation to the working direction of rotation, but does not cut the outer edge.
  • the slats have a trailing trailing edge.
  • fan grinding wheels For use on hand-held grinding machines numerous different fan grinding wheels are known, as for example in the EP 1 859 905 A2 , of the WO 2008/083 994 A1 and the EP 1 142 673 B1 described are. These fan-grinding wheels are characterized in that they are designed for use on a workpiece, wherein the axis of the grinding machine is not perpendicular to the surface to be machined on the workpiece, but at an angle. The use is thus oblique to the workpiece.
  • the grinding lamellae have in all cases triangular shape, albeit with different edge progressions.
  • the abrasive flaps are mounted on a support plate having an inner hub and an annular edge region, a Kröpfungs Kunststoff between the annular edge region and the hub.
  • the edge region carrying the abrasive lamellae is inclined radially outward against the annular web.
  • Known fan grinding wheel is the section of the triangular grinding lamellae such that thickened in a still unused grinding wheel of the abrasive lamella pad radially to the center axis from the inside out.
  • the grinding insert surface is therefore even and perpendicular to the center axis in an unused grinding wheel.
  • a particularly long service life is achieved, namely at high aggressiveness, that is, high grinding intensity.
  • the support plate having an annular edge region which is provided with an axis perpendicular to the central axis annular surface.
  • grinding lamellae are fastened in the form of circular-ring sectors, which thus have inner ring-shaped inner edges and outer edges and which-with respect to the working rotational direction-each have a leading edge and a trailing edge which run radially to the central axis.
  • the grinding insert surface The grinding lamella pad thus also runs in a plane perpendicular to the central axis.
  • Fan grinding wheels must achieve a peripheral speed in the so-called fracture safety test that is 1.73 times the peripheral speed for which the fan grinding wheel is approved. Fan grinding wheels of the above type reliably achieve this breakage speed only with relatively low abrasive coating. The abrasive coating is essential for the life of the grinding wheel and their removal rate.
  • the invention has for its object to provide a fan-grinding wheel according to the preamble of claim 1 for use on stationary grinding machines whose service life and removal rate is particularly high.
  • a fan-grinding wheel has a support plate 1 with a hub 2 with a central, circular opening 3 on.
  • the support plate 1 is rotationally symmetrical to a central axis 4 is formed.
  • the support plate 1 has an outer annular edge region 5 for receiving grinding lamellae 6.
  • This edge region 5 is connected to the hub 2 via a projecting in the direction of the central axis 4 of the support plate 1 annular web 7, which forms a Kröpfungs Surrey.
  • the support plate 1 is thus formed in one piece.
  • the edge region 5 is located in a perpendicular to the central axis 4 extending (imaginary) first plane 8.
  • the grinding blades 6 are mounted on a lying in the first plane 8 annular surface 9 of the edge region 5, wherein the hub 2 with the opening 3 with respect to this Ring surface 9 is reset.
  • the grinding blades 6 are arranged on the support plate 1 such that the height h of the grinding blade pad 10 on the edge region 5 radially to the center axis 4 is the same everywhere.
  • this means that the grinding insert surface 11 of the grinding wheel is also again in a plane perpendicular to the central axis 4 (imaginary) second plane 12, which is parallel to the first plane 8, wherein the height h is the distance of the first plane eighth and the second plane 12 corresponds to each other in the direction of the center axis 4.
  • the abrasive flake pad 10 thus has substantially the shape of a cylindrical annular disc.
  • the shape of the grinding blades 6 results from FIG. 3 , They have a circular-segment-shaped inner edge 13 and a circular-segment-shaped outer edge 14.
  • the inner edge 13 has an inner radius of curvature ri to the central axis 4;
  • the outer edge 14 has an outer radius of curvature ra to the central axis 4.
  • the inner edge 13 is connected to the outer edge 14 by means of a straight front edge 15 and a likewise rectilinear trailing edge 16.
  • the front edge 15 and the inner edge 13 intersect at a front inner corner 17.
  • the outer edge 14 and the front edge 15 intersect at a front outer corner 18.
  • the inner edge 13 and the trailing edge 16 intersect at a rear inner corner 19, and the outer edge 14 and the trailing edge 16 intersect at a rear outer corner 20.
  • the front edge 15 of the grinding blade 6 extends - based on a working direction of rotation 21 of the grinding wheel - leading from the front inner corner 17 to the front outer corner 18.
  • the trailing edge 16 is - also based on the working direction of rotation 21 - leading from the rear inner corner 19 to the rear outer corner 20 formed out.
  • a directed from the central axis 4 through the front outer corner 18 first radial beam 22 and directed from the central axis 4 through the front inner corner 17 second radial beam 23 enclose an angle ⁇ .
  • An angle ⁇ is included between the second radial beam 23 and a third radial beam 24, the third radial beam 24 being directed from the central axis 4 through the rear inner corner 19. From the center axis 4, a fourth radial beam 25 passes through the rear outer corner 20 of the grinding lamella 6.
  • the - with respect to the direction of rotation 21 - trailing third radial beam 24 includes the leading edge against this fourth radial beam 25 an angle ⁇ .
  • the grinding blades 6 are arranged at equal angular intervals over the circumference of the edge region 5 to a circular ring, wherein adjacent grinding blades 6 overlap each other such that only the trailing edges 16 and - related to the direction of rotation 21 - not covered by the respective next preceding sanding blades 6 , the respective trailing edge 16 adjacent areas to the grinding insert surface 11 are exposed.
  • the entirety of the grinding lamellae 6 forms the abrasive lamella coating 10, which is annular.
  • the degree of overlap of the grinding blades 6 is basically free to choose; in FIG. 1 is shown hatched for illustrative purposes only, how many grinding blades 6 can overlap each other.
  • the circular outer edge 26 of the grinding blade pad 10 is - as FIG. 2 is removable - radially to the central axis 4 to a small extent on the outer edge 27 of the support plate 1 before.
  • the circular inner edge 28 of the abrasive lamella pad 10 is located radially slightly outside the Kröpfungs Kunststoffs. 7
  • the abrasive flaps 6 are cut in the usual way from so-called abrasive belt, which is formed from a base in the form of paper, fabric, non-woven or the like and is applied on one side of the abrasive grain by a synthetic resin bond.
  • the attachment of the grinding blades 6 on the annular surface 9 also takes place in the usual way by means of an adhesive, wherein from the Figures 3 and 4 also the annular, applied to the annular surface 9 adhesive traces 29 can be seen.
  • FIG. 5 it can be seen how when using a grinding wheel on a stationary grinding machine 30, a workpiece 31 in the direction of the central axis 4 against the grinding insert surface 11 of the grinding blade pad 10 is applied. Unlike hand-held grinding machines, the grinding wheel is thus not slanted against the workpiece, but the workpiece 31 is attached in the direction of the central axis 4 against the perpendicular thereto insert surface 11. The wear of the abrasive blade pad 10 is thus due to its constant height h in the radial direction completely uniformly in the direction of the center axis 4. The grinding blade pad 10 can therefore be completely processed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (6)

  1. Meule en éventail destinée à être utilisée sur des meuleuses fixes, qui peut être entraînée en rotation dans un sens de rotation de travail (21),
    - comprenant un disque de support (1), qui comporte
    -- un axe central (4),
    -- un moyeu intérieur (2) et
    -- une zone marginale annulaire (5) présentant une surface annulaire (9) située dans un premier plan (8) perpendiculaire à l'axe central (4) et
    - comprenant des lamelles de meulage (6), qui
    -- sont réalisées sous la forme de base d'une section d'anneau circulaire comprenant quatre arêtes, à savoir
    --- une arête extérieure (14) en forme de section circulaire,
    --- une arête intérieure (13) en forme de section circulaire,
    --- une arête avant (15) - par rapport au sens de rotation de travail (21) - s'étendant de l'arête intérieure (13) à l'arête extérieure (14) et coupant l'arête extérieure (14) dans un coin extérieur avant (18) et l'arête intérieure (13) dans un coin intérieur avant (17) et
    --- une arête arrière (16) - par rapport au sens de rotation de travail (21) - s'étendant de l'arête intérieure (13) à l'arête extérieure (14) et coupant l'arête extérieure (14) dans un coin extérieur arrière (20) et l'arête intérieure (13) dans un coin intérieur arrière (19), et
    -- qui sont agencées à égales distances angulaires sur la surface annulaire (9) avec formation d'un revêtement de lamelle de meulage (10), de telle sorte que
    --- les arêtes extérieures (14) délimitent respectivement une partie d'un bord extérieur (26) du revêtement de lamelle de meulage (10),
    --- les arêtes intérieures (13) délimitent respectivement une partie d'un bord intérieur (28) du revêtement de lamelles de meulage (10),
    --- les arêtes avant (15) sont recouvertes chacune par la lamelle de meulage (6) la plus proche en amont dans le sens de rotation de travail (21) et
    --- les arêtes arrière (16) sont à découvert et délimitent une surface de plaquette de meulage (11), qui est agencée dans un deuxième plan (12) perpendiculaire à l'axe central (4) et parallèle au premier plan (8),
    caractérisé
    - en ce que l'arête avant (15) - par rapport au sens de rotation de travail (21) - est réalisée vers l'avant de l'arête intérieure (13) à l'arête extérieure (14),
    - en ce que l'arête arrière (16) - par rapport au sens de rotation de travail (21) - est réalisée vers l'avant de l'arête intérieure (13) à l'arête extérieure (14),
    - en ce que l'arête avant (15) coupe l'arête extérieure (14) dans un coin extérieur avant (18) et l'arête intérieure (13) dans un coin intérieur avant (17) et
    - en ce que l'arête arrière (16) coupe l'arête extérieure (14) dans un coin extérieur arrière (20) et l'arête intérieure (13) dans un coin intérieur arrière (19) et
    - en ce qu'un angle α, pour lequel 10°≤α≤45° s'applique, est formé entre un premier rayon radial (22) partant de l'axe central (4) à travers le coin extérieur avant (18) et un deuxième rayon radial (23) partant de l'axe central (4) à travers le coin intérieur avant (17),
    - en ce qu'un angle β, pour lequel 20°≤β≤90° s'applique, est formé entre un deuxième rayon radial (23) partant de l'axe central (4) à travers le coin intérieur avant (17) et un troisième rayon radial (24) partant de l'axe central (4) à travers le coin intérieur arrière (19), et
    - en ce qu'un angle γ, pour lequel 10°≤α≤45° s'applique, est formé entre un troisième rayon radial (24) partant de l'axe central (4) à travers le coin intérieur arrière (19) et un quatrième rayon radial (25) partant de l'axe central (4) à travers le coin extérieur arrière (20).
  2. Meule en éventail selon la revendication 1, caractérisée en ce que le revêtement de lamelle de meulage (10) présente radialement par rapport à l'axe central (4) une hauteur constante (h) en direction de l'axe central (4).
  3. Meule en éventail selon la revendication 1 ou 2, caractérisée en ce que l'arête avant (15) est rectiligne.
  4. Meule en éventail selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'arête arrière (16) est rectiligne.
  5. Meule en éventail selon la revendication 1, caractérisée en ce que : α=γ s'applique.
  6. Meule en éventail selon l'une quelconque des revendications 1 à 5, caractérisée en ce que l'arête extérieure (14) présente un rayon de courbure extérieur (ra) et l'arête intérieure (13) présente un rayon de courbure intérieur (ri), et : 1,1 ≤ ra/ri ≤ 2,0 s'appliquant.
EP10190651.9A 2009-12-15 2010-11-10 Meule à éventail pour l'utilisation sur des meuleuses stationnaires Not-in-force EP2335877B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10190651T PL2335877T3 (pl) 2009-12-15 2010-11-10 Listkowa tarcza szlifierska do zastosowania w szlifierkach stacjonarnych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009054696A DE102009054696A1 (de) 2009-12-15 2009-12-15 Fächer-Schleifscheibe für den Einsatz an stationären Schleifmaschinen

Publications (3)

Publication Number Publication Date
EP2335877A2 EP2335877A2 (fr) 2011-06-22
EP2335877A3 EP2335877A3 (fr) 2013-11-20
EP2335877B1 true EP2335877B1 (fr) 2017-01-04

Family

ID=43856192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10190651.9A Not-in-force EP2335877B1 (fr) 2009-12-15 2010-11-10 Meule à éventail pour l'utilisation sur des meuleuses stationnaires

Country Status (4)

Country Link
EP (1) EP2335877B1 (fr)
DE (1) DE102009054696A1 (fr)
ES (1) ES2616060T3 (fr)
PL (1) PL2335877T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010008898U1 (de) * 2010-10-26 2010-12-30 Lukas-Erzett Vereinigte Schleif- Und Fräswerkzeugfabriken Gmbh & Co. Kg Schleiflamelle zum Anordnen auf einer um eine Drehachse rotierend antreibbaren Schleifscheibe
DE202013105892U1 (de) 2013-12-20 2014-03-13 Heinrich Kreeb Gmbh & Co. Kg Schleifkörper
EP3892421B1 (fr) 2020-04-07 2023-01-25 VK Investment GmbH Tampon de broyage, corps de support de tampon de broyage et meule

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907147A (en) * 1957-12-23 1959-10-06 F L & J C Codman Company Radial face rotary buffing element
DE4020461C1 (en) * 1990-06-27 1991-07-18 Gerd Eisenblaetter Gmbh, 8192 Geretsried, De Face grinding disc tool - has replaceable grinding disc with backing disc having plastics rods
DE20006127U1 (de) 2000-04-03 2000-07-06 Lukas Erzett Schleif Fraes Schleiflamelle und Schleifteller mit einer Mehrzahl von solchen
DE102006024015A1 (de) 2006-05-23 2007-11-29 August Rüggeberg Gmbh & Co. Kg Fächer-Schleifscheibe
DE102007002643A1 (de) 2007-01-12 2008-07-17 Rhodius Schleifwerkzeuge Gmbh & Co. Kg Lamellenschleifscheibe
DE202007007839U1 (de) * 2007-06-01 2008-07-03 Düppe, Götz Lamellenschleifscheibe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2335877A3 (fr) 2013-11-20
ES2616060T3 (es) 2017-06-09
PL2335877T3 (pl) 2017-07-31
EP2335877A2 (fr) 2011-06-22
DE102009054696A1 (de) 2011-06-16

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