EP1991394B1 - Schleiflamelle und diese enthaltende schleifscheibe - Google Patents

Schleiflamelle und diese enthaltende schleifscheibe Download PDF

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Publication number
EP1991394B1
EP1991394B1 EP07722968A EP07722968A EP1991394B1 EP 1991394 B1 EP1991394 B1 EP 1991394B1 EP 07722968 A EP07722968 A EP 07722968A EP 07722968 A EP07722968 A EP 07722968A EP 1991394 B1 EP1991394 B1 EP 1991394B1
Authority
EP
European Patent Office
Prior art keywords
grinding
ring
lamellae
lamella
grinding wheel
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
EP07722968A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1991394A2 (de
Inventor
Georg Klug
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.)
Lukas-Erzett Vereinigte Schleif - und Fraeswerkzeug-Fabriken & Co KG GmbH
LUKAS ERZETT SCHLEIF FRAES
Lukas-Erzett Vereinigte Schleif - und Fraswerkzeug-Fabriken & Co KG GmbH
Original Assignee
Lukas-Erzett Vereinigte Schleif - und Fraeswerkzeug-Fabriken & Co KG GmbH
LUKAS ERZETT SCHLEIF FRAES
Lukas-Erzett Vereinigte Schleif - und Fraswerkzeug-Fabriken & Co KG GmbH
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 Lukas-Erzett Vereinigte Schleif - und Fraeswerkzeug-Fabriken & Co KG GmbH, LUKAS ERZETT SCHLEIF FRAES, Lukas-Erzett Vereinigte Schleif - und Fraswerkzeug-Fabriken & Co KG GmbH filed Critical Lukas-Erzett Vereinigte Schleif - und Fraeswerkzeug-Fabriken & Co KG GmbH
Priority to PL07722968T priority Critical patent/PL1991394T3/pl
Publication of EP1991394A2 publication Critical patent/EP1991394A2/de
Application granted granted Critical
Publication of EP1991394B1 publication Critical patent/EP1991394B1/de
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
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B24D13/08—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery comprising annular or circular sheets packed side by side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/008—Finishing manufactured abrasive sheets, e.g. cutting, deforming
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0045—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for by stacking sheets of abrasive material

Definitions

  • the invention relates to a grinding blade, in particular for arranging on a rotating drivable grinding wheel and a grinding wheel with at least one support element and at least two such each partially overlapping, together forming a ring shape grinding lamellae.
  • Such provided with a number of grinding blades grinding wheels are placed on a drive machine to be able to edit grinding workpiece surfaces.
  • Such grinding wheels and grinding blades are known in the prior art in various embodiments.
  • the EP 1 142 673 A2 Abrasive blades having two mutually parallel edges and between these a convex and a concave shaped third and fourth edge.
  • the abrasive lamellae are applied like a tile overlapping on an annular support portion of a carrier.
  • the US 5,643,068 shows in FIG. 4 a grinding blade with three radially oriented webs, which are arranged at 120 ° angles to each other about an axis of rotation to each other and form the center of a fully closed ring around a receiving bore.
  • Several grinding lamellae are arranged angularly offset from each other, so that a grinding tool is formed with a plurality of radially extending webs, wherein slots are formed between the webs.
  • a flap disc provided with a disk-shaped or plate-shaped carrier and with grinding lamellae which are provided on the carrier in an adhesive bed in a shingling manner.
  • recesses are cut away, which are approximately trapezoidal or have the shape of a part of a circular ring.
  • the rear edge of the recesses in the direction of rotation of the grinding wheel extends approximately radially.
  • These recesses serve to constantly control the grinding result and to reduce the heating of the workpiece.
  • Other grinding wheels with recesses are also from the DE 202 14 389 U1 , of the US 6,007,415 as well as from the DE 1 652 912 .
  • the present invention is therefore an object of the invention to provide grinding blades and grinding wheels, which can be inexpensively manufactured by providing a small cut in the pattern, with a control of the grinding result during the grinding process should be possible and the grinding wheels should have a long service life.
  • a grinding blade in particular for placement on a rotating drivable grinding wheel, in which this consists of at least two angularly arranged ring portions, which together form a sector of a ring and at least partially one of a circular disc having a central opening have a different shape.
  • the object is achieved in that it has at least one support element and at least two such partially overlapping, together forming a ring shape grinding lamellae.
  • a grinding blade which is not formed as in the prior art only elongated rectangular, but which has a plurality of portions which are arranged at an angle to each other, so that already a part of a ring is bounded by only one blade.
  • the ring of abrasive material is formed by arranging a plurality of abrasive blades each offset from each other and one above the other.
  • no longer small-sized leaflets are provided as shingled overlapping lamellae, as is the case in the prior art, but larger-sized lamellae provided with a bend. These are applied to each other, partially overlapping each other.
  • the grinding lamellae are preferably connected to a carrier element in the region of at least one ring section and along inner edges.
  • One or more ring sections remain free for grinding machining. Further, when staggering the angled abrasive sipes, there is not only a larger area for mounting each abrasive sipe on the support member, but also a larger surface available for the sanding operation, so that the single abrasive sipe is not only more firmly seated on the grinding wheel but also a larger effective grinding surface with no shoulders, otherwise caused by the small-sized blades of the prior art, is available.
  • each having at least three ring sections, in particular four ring sections these can be arranged one above the other partially overlapping each other and each offset by one ring section.
  • the outer edges of the ring portions are opaque to each other and together form an outer peripheral edge of the grinding wheel.
  • the grinding wheel is possible, since due to the larger dimensions of a single grinding lamella in comparison to the lamellae of the prior art already a few stacked abrasive lamellae sufficient to form the required for grinding ring on abrasive lamellae.
  • six mutually offset grinding lamellae be provided, which each have ring portions which are arranged offset by about 60 ° to each other.
  • the grinding lamellae preferably have four such mutually offset annular sections, so that even despite the small number of grinding lamellae, a high service life of the grinding wheel due to the four-ply nature of the grinding wheel is provided in the edge region of the grinding wheel used for the grinding process.
  • a cutting pattern for this approximately U-shaped grinding slats can be made very space-saving on a material blank or a material web, so that very little waste in the production of abrasive slats results.
  • the ring sections are either formed with a repeating pattern or at least equal and / or mirror image of each other, so that, for example, the free legs (first and fourth ring portion) of gripping blades constructed of four ring sections can interlock.
  • the free legs ie first and fourth ring sections
  • a second row of similarly juxtaposed U-shaped grinding lamellae can be arranged offset by 180 ° to the first row.
  • the second and third ring sections of the grinding lamellae of adjacent rows abut each other.
  • the first and last (fourth) ring sections of adjacent rows next to each other, so that each first and last ring sections of the adjacent abrasive slats between the first and last ring section of a grinding blade of the adjacent row.
  • the ring sections can have approximately the same shape. In this case, a particularly low material waste is possible in a simple manner, since the repeating shape of the individual grinding lamellae can very well mesh against each other.
  • the ring sections with each other a relative to each have a radially extending central axis different width in the radial direction of the grinding blade.
  • the first ring section has the largest and the last ring section has the smallest width in the radial direction of the grinding lamella. Since the abrasive flaps are usually applied to a rotating sanding pad, the width in the radial direction means the width of the ring sections towards a fictitious center of the looped abrasive flaps.
  • the material thickness becomes smaller toward the center of the grinding wheel and becomes larger toward the periphery of the grinding wheel, so that it is particularly large in the outer peripheral edge region of the grinding wheel, where the highest speeds occur during operation of a grinding tool and the main operating range of the grinding wheel is ,
  • most material removal takes place in this outer circumferential region of the grinding wheel, so that only a small amount of grinding material has to be made available in the inner region of the grinding wheel.
  • the service life of the grinding wheel is still advantageous high.
  • the first ring section with the greatest width is provided in the radial direction and the last, in particular fourth, with the smallest, the first ring sections of the grinding lamellae lying next to each other in a grinding wheel can form the upper side of the grinding disk and thus provide a good cover to the outside.
  • the outer peripheral edge of at least one annular section of the grinding lamella can be concavely and / or convexly curved.
  • a see-through area can arise during rotation of the grinding wheel.
  • alternative shapes are also possible in which recesses are provided for viewing, e.g. in the form of protruding and / or recessed areas along the outer peripheral edge of the grinding blade or of its annular portions.
  • the grinding wheel can be polygonal in plan view, that is, the individual ring sections of the partially overlapping grinding wheels each have a corner in the transition region from one ring section to the next or within its shape, so that such a polygonal grinding wheel is formed.
  • the grinding wheel may further comprise at least one rounded portion in the plan view, wherein the shape of the grinding wheel in the outer peripheral region of the respective transmission range can be varied.
  • the grinding wheel also have at least one cutout or recess along its outer peripheral edge and / or in at least one of its ring sections.
  • the carrier element is plate-shaped, on which the ring is arranged by partially overlapping arranged grinding lamellae.
  • the abrasive flaps are bonded to the carrier element, in particular by a resin, such as epoxy resin.
  • the plate-shaped carrier element may consist of a metal, a resin-bonded glass fiber fabric, a fiber material, a plastic material or another solid or hard, tough, preferably not splintering material. Material combinations are also possible, e.g. for partially reinforcing the support member in the area around a central opening for engaging a chucking spigot of a prime mover on which the grinding wheel is mounted.
  • the plate-shaped carrier element consists of vulcanized fiber.
  • the carrier element can likewise be designed in the form of an annular grinding lamella having a central passage opening for fastening the grinding wheel to a drive machine.
  • the carrier element is then preferably provided with the same peripheral edge shape as the ring of stacked mutually partially overlapping abrasive lamellae.
  • a passage opening is preferably provided centrally or centrally in the carrier element, through which a clamping pin, for example, a grinder, as already mentioned, can be inserted.
  • a backing material provided with abrasive material can be provided, which has a desired material thickness.
  • FIG. 1 shows a plan view of a first embodiment of a grinding blade according to the invention 1.
  • the grinding blade 1 is arranged on a plate-shaped support member 2.
  • the carrier element 2 has a central passage opening 3.
  • the grinding blade 1 is composed of four ring sections 4, 5, 6, 7.
  • the individual ring sections 4, 5, 6, 7 each have a different width B in the radial direction.
  • the first ring portion 4 the largest width B in the radial direction R and the fourth ring portion 7, the lowest.
  • the two ring sections 5 and 6 arranged therebetween each have a slightly smaller width than the left-adjacent ring section. This makes it possible to achieve an offset of superimposed abrasive slats 1 in the radial direction, as in FIG. 2 is indicated.
  • the individual grinding lamellae 1 are each offset by a ring section, so they overlap each other. In each case a ring section 7 is fastened on the carrier element, in particular glued.
  • the bonding can take place in the region of an entire annular section 7 and additionally in the region of the inner edges which face the through-opening 3. This is possible because in an inner region 13, the grinding lamellae 1 are arranged radially offset from one another and thus each grinding lamella 1 in this area over the entire inner edges of the carrier element is partially directly facing and can be glued to it.
  • the material thickness of the grinding wheel in the outer edge region 12 is greatest and decreases in the direction of the inner region 13 continuously. This is effected by the different sized with respect to their radial width ring sections 4 to 7 of the grinding blades 1.
  • the grinding lamellae 1 it is possible, as already mentioned, for the grinding lamellae 1 to be supported on the inner region 13 over the entire extent of their inner edges can be connected to the support element 2.
  • most of the abrasive material is thereby provided in the edge region of the grinding wheel, in which the highest speeds are achieved during rotation.
  • the cutaway view according to FIG. 3 shows a pattern 14 for grinding blades 1 according to FIG. 1 ,
  • the arrangement of the due to the angular displacement of the individual ring sections of 60 ° approximately U-shaped grinding lamellae takes place side by side, so that each of the first and fourth ring section 4, 7 adjacent grinding lamellae are adjacent.
  • the first row 15 of juxtaposed U-shaped grinding lamellae 1 is adjacent to the second row 16 of similarly arranged adjacent to each other U-shaped grinding lamellae, which, however, are arranged offset by 180 ° to the first row 15.
  • a third row 17 of likewise juxtaposed U-shaped grinding lamellae 1 is in turn arranged offset by 180 ° to the second row 16, in which case the middle ring sections 5 and 6 are respectively adjacent to the corresponding ring sections 5 and 6 of the row 16.
  • the grinding blades 1 are in the same orientation as the grinding blades 1 in the first row 15.
  • the juxtaposed U-shaped grinding blades 1 are again rotated by 180 ° to the alignment in the third row 17, ie in the the same orientation as in the second row 16.
  • the first and fourth ring sections 4, 7 of the grinding lamellae 1 again engage in the openings 49 of the grinding lamellae 1 of the adjacent row 17.
  • the material utilization of the abrasive material for the production of the abrasive blades 1 is therefore optimal in this form of a pattern.
  • respective regions 19, 20 are cut away between the respective ring sections 4 and 7 so that the different widths B of these ring sections 4 and 7 result.
  • FIG. 4 is the grinding blade 1 according to FIG. 1 shown as a detail, in addition cut-away portions 21, 22, 23 of each grinding blade, which point to the inner portion 49 of the grinding blade 1, are shown hatched.
  • FIG. 5 shows a plan view of a modification of the shape of the grinding blade 1 according to FIG. 1 , wherein the grinding blade 1 according to FIG. 5 Ring sections 4 to 7 having the same shape and dimensions.
  • FIG. 6 shows a plan view of a detail of a cut pattern 14 'for the grinding blades according to FIG. 5 , which have identically shaped ring sections 4, 5, 6, 7, in which therefore also the width in the radial direction is identical.
  • FIG. 7 shows a further embodiment of a grinding blade 1.
  • This has instead of straight edges 10 at the ring portion 24 has a convex edge 28.
  • the ring section 26 adjacent to the ring section 26 again has a convex edge 30 and the ring section 27 adjacent to the ring section 26 has a concave edge 31.
  • FIG. 8 sketched in plan view, possible.
  • In the area of the convex edges 28, 30, such a view is not possible because they determine the outer circumference of the grinding wheel 8, at least if they have the same radial extension.
  • the individual ring sections 24 to 27 are offset by an angle ⁇ of 60 ° to each other, preferably three identical abrasive slats 1 are arranged overlapping each other and one above the other, wherein the Abrasive blades 1 are arranged offset by two ring portions to each other. It can also be provided six grinding blades 1, wherein three of the six grinding blades 1 are identical to each other and the other three of the six grinding blades 1 to the first three grinding blades 1 are designed mirror-symmetrically. Here, the grinding blades 1 are arranged offset by one ring portion to each other.
  • FIG. 9 shows a plan view of a cutting pattern 32 for the preparation of the grinding blades 1 according to FIG. 7 , It can be seen here that each two rows of intermeshing grinding lamellae 1 have identical grinding lamellae 1, wherein the grinding lamellae 1 of the first two left rows are mirror-symmetrical to the grinding lamellae 1 of the two adjacent rows.
  • the pattern corresponds to the in the Figures 3 and 6 shown, wherein the respective convex and concave edges of the annular portions 25 and 26 mesh with each other, as well as the convex and concave edges 28, 31, the straight inner edges of the respective inner region 49 of the grinding blades 1 bounding inner edges 55 to 58 and the end-side straight edges 59th , 60 of the ring sections 24 and 27. Also in this shaping is thus an optimal utilization of the abrasive material for producing the grinding blades 1 substantially without waste possible.
  • FIGS. 10 to 13 show a further embodiment of the grinding blade 1.
  • This has in its respective ring portion 34, 35, 36, 37 a both convex and concave outer edge 33 extending.
  • the shape of the ring sections 34 to 37 in the region of the outer edge 33 corresponds to each other in all ring sections.
  • the ring portion 34 additionally has an inner convex and concave inner edge 38. This superimposed on the top of the support member 2 after overlapping the grinding blades 1, as FIG. 12 can be removed.
  • the width B of the ring sections 34 in the radial direction is in turn greater than that of the remaining ring sections.
  • the ring portions 35 to 37 each have a smaller width B in the radial direction than the right next adjacent ring portion, as in FIG. 10 indicated.
  • the resulting staggering effect in the inner area of the grinding wheel is in FIG. 12 indicated.
  • the convex and concave shape of the outer edges 33 of the individual ring sections is constructed sinusoidal.
  • any other shape may be chosen here that will provide a portion that is one of a circular disk as indicated by dashed line 39 in FIG. 11 is indicated, has different shape to allow a visual inspection of the workpiece to be ground.
  • the sinusoidal waveform of the outer edge 33 of the ring portions extends between the outer dashed circle 39 and the inner dashed circle 40 in this embodiment.
  • the carrier element 2 visible in the inner region 13 of the grinding wheel 8 can either be formed from a metal plate or disk with a central passage opening 3 or possibly also from a plurality of layers of abrasive material or a reinforced layer of abrasive material, for example in the form of a plan view of the Grinding wheel 8 is shaped.
  • this may for example have a diameter such as the circle 40 shown in dashed lines FIG. 11 equivalent.
  • advantageously advantageously has a smaller diameter than the dashed circle 40, which connects the respective innermost extensions of the outer edge 33 of the ring sections together to avoid unwanted damage to the workpiece to be machined by contact with the hard carrier material.
  • FIG. 14 shows a plan view of a further embodiment of a grinding blade 1 with ring portions 44 to 47.
  • This has, instead of an outer edge with concave or convex portions an outer edge 41 with a projecting portion 42 and a recessed portion 43.
  • This shape is the same for all ring sections 44 to 47. Accordingly, in each case a visual inspection of a Schleiffort suitss in the region of the recessed portions 43 is possible, which form a semitransparent appearing strip-shaped region during rotation of the grinding wheel.
  • the grinding disks each have at least two ring sections arranged at an angle to one another. If this additionally at least partially different from a circular disc with a central opening Having shaping, a see-through range for controlling the Schleiffort suitss can be provided on a workpiece to be machined in the outer edge region. Alternatively or additionally, however, openings may also be provided within the ring sections in order to allow such a control.
  • abrasive slats as ring sections, which are arranged overlapping each other, and these form a circular disc having a central opening corresponding annular shape.
  • a sectionally different width of the ring sections can be provided in the radial direction in order to provide a radial staggering of the superimposed abrasive lamella ring sections.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
EP07722968A 2006-03-03 2007-02-28 Schleiflamelle und diese enthaltende schleifscheibe Not-in-force EP1991394B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07722968T PL1991394T3 (pl) 2006-03-03 2007-02-28 Płytka do szlifowania i zawierająca ją tarcza szlifierska

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006010366A DE102006010366B3 (de) 2006-03-03 2006-03-03 Schleiflamelle und diese enthaltende Schleifscheibe
PCT/EP2007/001715 WO2007101589A2 (de) 2006-03-03 2007-02-28 Schleiflamelle und diese enthaltende schleifscheibe

Publications (2)

Publication Number Publication Date
EP1991394A2 EP1991394A2 (de) 2008-11-19
EP1991394B1 true EP1991394B1 (de) 2009-09-09

Family

ID=38308682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07722968A Not-in-force EP1991394B1 (de) 2006-03-03 2007-02-28 Schleiflamelle und diese enthaltende schleifscheibe

Country Status (10)

Country Link
US (1) US8360830B2 (es)
EP (1) EP1991394B1 (es)
JP (1) JP2009528174A (es)
CN (1) CN101437654B (es)
AT (1) ATE442226T1 (es)
CA (1) CA2643590C (es)
DE (2) DE102006010366B3 (es)
ES (1) ES2331979T3 (es)
PL (1) PL1991394T3 (es)
WO (1) WO2007101589A2 (es)

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DE102011050130A1 (de) 2011-05-05 2012-11-08 Lukas-Erzett Vereinigte Schleif- und Fräswerkzeugfabriken GmbH & Co KG Schleiflamelle
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Also Published As

Publication number Publication date
ATE442226T1 (de) 2009-09-15
WO2007101589A3 (de) 2007-10-11
JP2009528174A (ja) 2009-08-06
CN101437654B (zh) 2012-02-22
CN101437654A (zh) 2009-05-20
DE502007001493D1 (de) 2009-10-22
CA2643590C (en) 2011-06-21
US8360830B2 (en) 2013-01-29
PL1991394T3 (pl) 2010-02-26
EP1991394A2 (de) 2008-11-19
ES2331979T3 (es) 2010-01-21
CA2643590A1 (en) 2007-09-13
DE102006010366B3 (de) 2007-10-04
WO2007101589A2 (de) 2007-09-13
US20090068938A1 (en) 2009-03-12

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