EP0612586B1 - Schleifscheibe für handgeführte Schleifmaschinen, insbesondere Trenn-Schleifscheibe - Google Patents
Schleifscheibe für handgeführte Schleifmaschinen, insbesondere Trenn-Schleifscheibe Download PDFInfo
- Publication number
- EP0612586B1 EP0612586B1 EP94100690A EP94100690A EP0612586B1 EP 0612586 B1 EP0612586 B1 EP 0612586B1 EP 94100690 A EP94100690 A EP 94100690A EP 94100690 A EP94100690 A EP 94100690A EP 0612586 B1 EP0612586 B1 EP 0612586B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- abrasive
- wheel according
- ring
- support
- abrasive 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.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- 230000002787 reinforcement Effects 0.000 claims description 31
- 230000003014 reinforcing effect Effects 0.000 claims description 16
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 6
- 238000006068 polycondensation reaction Methods 0.000 claims description 3
- 239000007767 bonding agent Substances 0.000 claims 2
- 230000004323 axial length Effects 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 27
- 238000005520 cutting process Methods 0.000 description 16
- 239000011230 binding agent Substances 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000006061 abrasive grain Substances 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000008187 granular material Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005452 bending Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910001229 Pot metal Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
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
- B24D5/16—Bushings; Mountings
-
- 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
- B24D18/0081—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for of wire-reinforced grinding tools
-
- 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
Definitions
- the invention relates to a grinding wheel according to the preamble of the claim 1 as e.g. known from US-A-3,487,590.
- Such grinding wheels are only used up to a range of 50 to 70% of the original diameter worn. So it will be a considerable one Part of the grinding wheel not used. This one not used The proportion of the grinding wheel is in a range of 30 to 50% of the Original weight of the grinding wheel. This remaining remainder must be over Hazardous waste landfills are being disposed of, which poses increasing problems since the number of hazardous waste landfills is declining and there the cost for this rises sharply. The reason for the relatively high remaining The rest of the unused grinding wheel is that the grinding wheel on the grinding spindles or shafts of hand-held grinding machines clamped between the flange plates on the end faces that are spread over a substantial portion of the diameter extend the grinding wheel.
- the grinding wheels are clamped necessary, because the fabric reinforcements only then the tangential forces can record if they have a sufficient radial range - Starting from their inner recess - are clamped. Furthermore, these reinforcement layers are necessary because such grinding wheels for hand-held grinding machines, considerable lateral forces have to be able to take up, namely when used as a rough grinding wheel as well as a cutting wheel. In addition, you can do not immerse the flange plates in the workpiece when grinding. In addition, the part of the radially projecting over these flanges Cutting wheel is not consumed, which corresponds to the workpiece thickness.
- the post-published older European patent application EP 0 530 691 A discloses a grinding wheel that has a central support and a detachably and interchangeably attached slip ring, the one hand abuts a ring flange connected to the carrier and clamped against it by means of a clamping ring with a clamping flange becomes.
- From US-A-3 487 590 is a grinding wheel with an inner support body and with one connected to it, a synthetic resin bond of Known abrasive grain slip ring.
- the ring disk-shaped trained slip ring has a concentric to a central longitudinal axis trained recess in which the annular disc-shaped Support body arranged and connected to the slip ring.
- Of the Support body is made of steel, iron or aluminum.
- the invention has for its object a grinding wheel of the generic type To create the type of waste to be disposed of is greatly reduced.
- the support body can either be reused or at least be recycled; in addition, the slip ring can be practical completely processed, i.e. used up.
- the further development according to claim 7 is expedient, to be able to use up the slip ring completely.
- the supporting body only needs to be cleaned slightly and can then be reused or an existing recycling process, for example as steel scrap.
- Claims 9 to 12 give particularly advantageous refinements for Reinforcement layers that enable the slip rings to be covered to give large recess on the outer diameter, which in turn the The reason for this is that if the slip ring is completely used up is achieved.
- a grinding wheel which is a Cut-off wheel for a hand-held grinding machine.
- she has an annular cylindrical slip ring 1, in which also ring-cylindrical support body 2 is glued.
- the slip ring 1 has one circular recess 3, which is concentric to the central longitudinal axis 4 is formed.
- the support body 2 is inserted into this recess 3.
- the diameter of the recess 3, i.e. the inner diameter Di of the slip ring 1 is a few tenths of a millimeter larger than the outside diameter d of the support body 2.
- the slip ring 1 has an outer diameter Da on, where the relationship Da / Di applies: 1.4 ⁇ Da / Di ⁇ 2, i.e. the slip ring 1 has one based on its Outside diameter Since relatively large recess 3.
- For hand cutting discs applies 100 mm ⁇ Da ⁇ 300 mm.
- the thickness a of the slip ring 1 in the direction of the axis 4 is in the range from 2.0 mm to 4.0 mm and is greater than the thickness b of the supporting body 2 in the direction of the axis 4, so that the slip ring 1 with both ends 5, 5 'protrudes over the end faces 6, 6' of the support body 2.
- the thickness of the support body 2 in the direction of the axis 4 equal to Thickness of the slip ring 1, wherein the slip ring 1 and Support body 2 are arranged plane-parallel to each other; for cutting discs but it is advantageous if the thickness b of the support body 2 in the direction the axis 4 is a little less than the thickness a of the slip ring 1 Immersion of the cutting wheel in a workpiece to be cut to enable or facilitate.
- the slip ring 1 and the support body 2 are preferably together using a suitable adhesive Epoxy resin.
- the support body 2 has a receiving opening formed concentrically to the axis 4 13 for the drive shaft of a hand-held grinding machine on.
- the support body 2 is made of metal, usually from steel. It is made from sheet metal by punching or turning.
- the slip ring 1 has the usual basic structure, i.e. it has a reinforcement layer in the area of the end faces 5, 5 ' 14, 14 ', which is designed in a manner to be described is.
- Abrasive grain is located between the reinforcement layers 14, 14 ' 15, preferably made of aluminum oxide, silicon carbide, zirconium corundum, sol gel grain or mixtures thereof and binder 16 in the form of pure or modified Synthetic resins and fillers 17, e.g. Pyrite or cryolite.
- the Abrasive grain 15 has a nominal grain size in the range from 315 to 1000 ⁇ m.
- FIG. 3 shows a reinforcement layer 14 described in DE 38 19 199 C2 or 14 ', which is preferred instead of a fabric in such slip rings 1, in particular to use with hand-cut grinding wheels is.
- a reinforcement layer 14 or 14 ' is made of one or a plurality of reinforcing threads 18 are formed, which are optimally tangential and counteract radial expansion of the slip ring 1.
- the reinforcing threads 18 run in the area of a central opening 19 exactly tangential; they then run radially tangentially to the outer circumference and are redirected there and again straight to the opening 19 returned to where they passed tangentially. You run with it essentially according to the actual stress on the rotating Slip rings 1.
- the greatest principal tension of a rotating The slip ring runs in the tangential direction.
- the tangential tension i.e. the tangential force curve has in the area of the opening 19, that is radially inside in the area of the inner peripheral surface 8 of the slip ring 1, their highest value, which steadily decreases towards the outside.
- the reinforcing threads 18 only in the area the opening 19 are exactly tangential, but that they are between the opening 19 and outer edge received a radial component to the in this Counteract also strong radial tension in the area.
- the reinforcement threads 18 are at the respective crossing points 20 with each other connected, namely by a synthetic resin. The reinforcing threads 18 are before laying to the pattern shown in Fig.
- the Reinforcement layer 14 or 14 ' is therefore sufficiently inherently stable to Production of a slip ring 1 to be used.
- the inside diameter D'i of the reinforcement layer 14 or 14 ' corresponds to essentially the inner diameter Di of the slip ring 1. Corresponding applies to the ratio of the outer diameter D'a of the reinforcement layer 14 or 14 'in relation to the diameter Da of the slip ring 1.
- Die Vertex angle c of the reinforcing threads 18 in the region of the deflection points 21 align when the radius of curvature, not shown, in the range of Deflection points 21 is neglected, only according to the ratio from D'a to D'i. Since the reinforcing threads 18 are essentially like that Legs of an isosceles triangle are arranged also from a triangle.
- a reinforcement layer 14 or 14 ' is shown, which is very special preferably instead of a fabric in the slip rings described 1 of cut-off wheels for hand-held grinding machines are.
- the reinforcing threads 18 in each case from the central opening 19 in accordance with the resultant the main stress direction. 4 is the course of such Reinforcement thread shown in reinforced lines. He begins - with mirror-symmetrical design - tangential in the area opening 19 and is such in slightly more than a half-spiral rotation led to the outer deflection point 21 that he already there again has an approximately tangential course.
- Reinforcing thread 18 approximates only point-wise at the central opening 19 on. It follows that there is no excessive accumulation of material the reinforcing threads 18 occurs in the region of the opening 19. this fact and the described course of the reinforcing threads leave them Reinforcement layer 14 or 14 'appear even more advantageous than the reinforcement layer 3.
- the Slip ring 1 designed in the same way as in the embodiment 1 and 2.
- the support body 2 ' is also disc-shaped formed as shown in Fig. 1, wherein for the thicknesses a and b the above statements apply. It is made of die-cast zinc and is produced by injection into the recess 3 of the slip ring 1.
- the zinc penetrates according to the enlarged detail 6 in the region of the recess 3 in cavities 22 between the Abrasive grit 15 or binder 16 and fillers 17, thereby a high-strength positive connection between support body 2 'and slip ring 1 is effected.
- a reinforcement layer 14 ' is placed in a press mold. Subsequently, an abrasive granulate consisting of abrasive grain 15, filler 17 and binder 16 is introduced into the mold and another reinforcement layer 14 is placed on it. A pressure of 500 to 4000 N / cm 2 is then exerted on this package, as a result of which the slip ring 1 is compressed. During this compression, an adhesive bond occurs, which is referred to as green strength. During this pressing, the abrasive granules, ie abrasive grain 15, binding agent 16 and filler 17, each press outward through the reinforcing layer 14 or 14 '.
- this finished hardened slip rings 1 is a support body 2 glued in the manner already described.
- the the adhesive layer 10 and the adhesive seams 12 forming adhesive is then in cured in a continuous furnace at about 120 ° C.
- Example I The production of the slip ring 1 up to the compression takes place as for Example I. Then before the hardening of the slip ring 1 Support body 2 glued in the manner described. The slip ring 1 and support body 2 existing grinding wheel is then between steel plates stacked and placed in an oven for curing as in Example I, now simultaneously the binder 16 of the slip ring 1 and the adhesive of the adhesive layer 10 and the adhesive seams 12 at temperatures between 120 ° C and 200 ° C - depending on the desired degree of hardness - be cured.
- the slip ring 1 is produced as in Example I. Then this slip ring 1 is in an injection mold of a zinc injection molding machine inserted and the support body 2 'produced by injection. Because of the high cooling rate of the zinc does not occur thermally conditional damage to the slip ring 1 and in particular the binder 16.
- the slip ring 1 can also be in a known manner have internal reinforcement layer.
- the grinding wheel can be used until the grinding ring has been completely processed 1 are used, especially when used as a cutting wheel, because they are created in a cut-off on the workpiece Gap can dip without collisions between the support body 2 and the machined workpiece can occur.
- Remains of the slip ring 1 and the adhesive layer 10 and the adhesive seams 12 can by heating the remaining support body 2 and can be removed by subsequent brushing with steel brushes. The Support body 2 can then be used again. Should they be damaged they can be easily recycled.
- slip ring 1 and on the other hand has a support body 2 ''.
- the slip ring Its structure corresponds essentially to that described above Structure, wherein it is provided with reinforcing layers 14, 14 ', as in 4 and are described above for this purpose.
- the support body 2 '' consists of a relatively thin sheet of steel, if necessary stainless steel, aluminum or brass, whose thickness e applies 0.4 mm ⁇ e ⁇ 1.0 mm, whereby applies to practical cases 0.5 mm ⁇ e ⁇ 0.8 mm.
- the very thin support body 2 '' is a ring-cylindrical Edge 24 flanged, its extension b in the direction of axis 4 is equal to or slightly less than the thickness a of the slip ring 1.
- an outer peripheral surface 9 '' is connected to the slip ring 1.
- the slip ring 1 is immediately on the outer peripheral surface 9 ′′ of the ring-cylindrical edge 24, which is further explained in the following description of the manufacture becomes.
- the cutting grinding wheel, as shown in FIGS. 7 and 8 is against lateral forces, i.e.
- the grinding wheel is flexible, i.e. with lateral bending forces there are no jumps in the bending stress curve in the area of the edge 24, so that the risk of bending due to parallel lateral forces acting on axis 4 are not given.
- the slip ring 1 is flexible for such forces, which on the one hand on the synthetic resin bond of the slip ring 1 and on the other hand on the The presence of the reinforcement layers 14, 14 'can be traced back.
- the thickness e of the support body 2 '' must be small; on the other hand, the edge 24 is necessary so that the outer peripheral surface 9 '' has a sufficient axial extent b around that from the slip ring 1 on the support body 2 '' to be transmitted torsional forces and also those mentioned Transfer side bending forces from slip ring 1 to support body 2 '' to be able to.
- the thickness a of the slip ring 1 of cutting grinding wheels is in the range of 2 to 4 mm. It follows that the Thickness e of the supporting body 2 ′′ is considerably less than the thickness a of the Slip ring 1. The following applies: 0.1 a ⁇ e ⁇ 0.25a. For the axial extension b of margin 24 applies that it should be only slightly smaller than that Thickness a. Here 0.8 a ⁇ b ⁇ 1.0 a applies.
- the ratio Da / Di ⁇ 2 also applies to this cutting wheel and in particular applies 1.4 ⁇ Da / Di ⁇ 2.
- the special spiral laying according to Fig. 4 allows the recess 3 of the slip ring 1 relative to Outside diameter Da to make very large, which again leads to the fact that the slip ring 1 are completely used up during cut-off grinding can, so far that at the edge 24 no residues of the slip ring 1 more remain. This is due to the fact that by the end of the Grinding insert in the slip ring 1 is a reinforcement, the Reinforcement threads 18 run in this area purely tangential and therefore the high tangential forces occurring here in a particularly favorable manner be able to record.
- the support body 2 '' should undergo a surface treatment have been subjected to surface oxidation, in particular Rust formation in non-stainless steel, counteracts.
- surface oxidation in particular Rust formation in non-stainless steel
- Nickel plating or copper plating of the support body 2 ′′ into consideration, in particular but also a plasma polymer treatment of the support body 2 ′′, because of such treatment, on the one hand, an extreme cleaning takes place and on the other hand a particularly high adhesiveness is achieved, which is particularly favorable for the outer peripheral surface 9 ''.
- the outer peripheral surface 9 ′′ is provided with a thin layer 25 of elasticized phenol-formaldehyde adhesive, which has the function of an adhesion promoter and is not absolutely necessary. Then the support body 2 ′′ is placed in a mold, with its end face 6 ′′ facing away from the edge 24 being placed on the bottom of the mold, ie the edge 24 stands up. Then a reinforcement layer 14 'is inserted, the opening 19 of which is completely filled by the supporting body 2''. Then grinding granulate is filled into the mold and combed or knife.
- This grinding granulate consists of the abrasive grain 15 already described with a nominal grain size in the range of 600 microns, binder 16 and filler 17, the binder also being a phenol-formaldehyde adhesive, which is generally identical to that from which the Layer 25 exists. In any case, it should be a curing polycondensation adhesive.
- the second reinforcement layer 14 is placed on the combed or scraped-in layer of the grinding granulate. The grinding granulate is then pressed with the supporting body 2 ′′ under a pressure of 500 to 4000 N / cm 2 .
- abrasive grain 15 presses into the layer 25 on the one hand and also into the outer peripheral surface 9 ′′ of the edge 24, as a result of which a particularly firm tooth-like connection between the slip ring 1 and the support body 2 ′′ is achieved.
- These compacted but not yet hardened grinding wheels are stacked between steel plates and placed in an oven for hardening and hardened at temperatures between 120 and 200 ° C, depending on the desired degree of hardness. The connection between the slip ring 1 and the support body 2 ′′ on the one hand and the hardening of the grinding granulate on the other hand is thus carried out in one operation.
- the slip ring 1 itself should have as hard a binder 16 as possible, on the one hand to prevent lubrication during the grinding process and on the other hand ensure premature breakout of the abrasive grain 15 so that a Self-sharpening of the grinding wheel is achieved.
- Binder should not be so hard or brittle that breaking off the Slip ring 1 from the support body 2 '' can occur.
- Polycondensation adhesives with numerous modification options have here as proven particularly advantageous.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
- Fig. 1
- eine Trenn-Schleifscheibe mit eingeklebtem Tragkörper im Querschnitt,
- Fig. 2
- einen Teilausschnitt aus Fig. 1 in vergrößertem Maßstab,
- Fig. 3
- eine Draufsicht auf eine in Dreieckslegung gebildete Armierungslage für die Trenn-Schleifscheibe,
- Fig. 4
- eine Draufsicht auf eine in Spirallegung gebildete Armierungslage für die Trenn-Schleifscheibe,
- Fig. 5
- eine weitere Ausführungsform einer Trenn-Schleifscheibe mit eingegossenem Tragkörper im Querschnitt,
- Fig. 6
- einen Teilausschnitt aus Fig. 5 in vergrößertem Maßstab,
- Fig. 7
- einen Teil-Querschnitt durch eine weitere Ausführungsform einer Trenn-Schleifscheibe und
- Fig. 8
- einen Teilausschnitt aus Fig. 7 in vergrößertem Maßstab.
Claims (16)
- Schleifscheibe für handgeführte Schleiftmaschinen, insbesondere Trenn-Schleifscheibe, mit einem inneren Tragkörper (2, 2'') und mit einem mit diesem verbundenen, eine Kunstharzbindung des Schleifkorns (15) aufweisenden Schleifring (1), wobei der ringscheibenförmig ausgebildete Schleifring (1) eine konzentrisch zu einer Mittel-Längs-Achse (4) ausgebildete Ausnehmung (3) aufweist, in der der ringscheibenförmig ausgebildete Tragkörper (2, 2'') angeordnet und mit dem Schleifring (1) verbunden ist,
dadurch gekennzeichnet,
daß der Schleifring (1) mindestens eine Armierungslage (14, 14') aufweist,daß der Tragkörper (2, 2'') aus Metall-Blech besteht,daß die Dicke (e) des Tragkörpers (2'') deutlich geringer ist als die Dicke (a) des Schleifrings (1) unddaß der Tragkörper (2'') an seinem Außenumfang mit einem im wesentlichen ringzylindrischen Rand (24) versehen ist, dessen Erstreckung (b) in Richtung der Mittel-Längs-Achse (4) größer ist als die Dicke (e) des Tragkörpers (2'') und an dessen Außenumfangsfläche (9'') der Schleifring (1) befestigt ist. - Schleifscheibe nach Anspruch 1, dadurch gekennzeichnet,daß für das Verhältnis von Außendurchmesser (Da) zu Innendurchmesser (Di) des Schleifringes (1) gilt: 1,4 ≤ Da/Di ≤ 2.
- Schleifscheibe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Tragkörper (2, 2'') in die Ausnehmung (3) des Schleifrings (1) eingeklebt ist.
- Schleifscheibe nach Anspruch 1, dadurch gekennzeichnet,daß der Tragkörper (2'') eine Dicke (e) von 0,4 mm ≤ e ≤ 10 mm und bevorzugt 0,5 mm ≤ e ≤ 0,8 mm aufweist.
- Schleifscheibe nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet,daß für die axiale Erstreckung (b) des Randes (24) im Vergleich zur Dicke (a) des Schleifringes (1) gilt: 0,8 a ≤ b ≤ 1,0 a.
- Schleifscheibe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet,daß der Tragkörper (2'') um eine konzentrisch zu seiner Mittel-Längs-Achse (4) ausgebildete Aufnahmeöffnung (13) mit Rippen (23) versehen ist.
- Schleifscheibe nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet,daß der Schleifring (1) mindestens mit einer Stirnseite (5) über eine Stirnseite (6) des Tragkörpers (2, 2'') vorsteht.
- Schleifscheibe nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet,daß die die Ausnehmung (3) begrenzende Innenumfangsfläche (8) des Schleifrings (1) und/oder die Außenumfangsfläche (9, 9'') des Tragkörpers (2, 2'') zylindrisch ausgebildet sind.
- Schleifscheibe nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet,daß die Armierungslage (14, 14') aus Verstärkungsfäden (18) besteht, die im Bereich einer mittleren Öffnung (19) tangential und zum Außenumfang hin radial-tangential verlaufen und die am Außenumfang umgelenkt sind.
- Schleifscheibe nach Anspruch 9, dadurch gekennzeichnet,daß die Verstärkungsfäden (18) tangential und radial-tangential jeweils geradlinig verlaufen.
- Schleifscheibe nach Anspruch 9, dadurch gekennzeichnet,daß die Verstärkungsfäden (18) von der mittleren Öffnung (19) aus zum Außenumfang hin in Form einer Teil-Spirale verlaufen.
- Schleifscheibe nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet,daß die Verstärkungsfäden (18) an ihren Kreuzungsstellen (20) miteinander verklebt sind.
- Schleifscheibe nach Anspruch 1, dadurch gekennzeichnet,daß das Schleifkorn (15) in die Außenumfangsfläche (9'') des Randes (24) teilweise eingedrückt ist.
- Schleifscheibe nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet,daß der Schleifring (1) einen Polykondensations-Klebstoff als Bindemittel (16) aufweist.
- Schleifscheibe nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet,daß die Außenumfangsfläche (9'') des Randes (24) mit einer Schicht (25) aus Klebstoff versehen ist, der dem Bindemittel (16) des Schleifringes (1) gleichartig ist.
- Schleifscheibe nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet,daß für die Dicke (e) des Tragkörpers (2'') im Verhältnis zur Dicke (a) des Schleifrings (1) gilt: 0,1 a ≤ e ≤ 0,25 a.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97121891A EP0832720A3 (de) | 1993-02-15 | 1994-01-19 | Schleifscheibe für handgeführte Schleifmaschinen, insbesondere Trenn-Schleifscheibe |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4304513 | 1993-02-15 | ||
DE4304513 | 1993-02-15 | ||
DE4311529A DE4311529A1 (de) | 1993-02-15 | 1993-04-07 | Schleifscheibe für handgeführte Schleifmaschinen, insbesondere Trenn-Schleifscheibe |
DE4311529 | 1993-04-07 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97121891A Division EP0832720A3 (de) | 1993-02-15 | 1994-01-19 | Schleifscheibe für handgeführte Schleifmaschinen, insbesondere Trenn-Schleifscheibe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0612586A1 EP0612586A1 (de) | 1994-08-31 |
EP0612586B1 true EP0612586B1 (de) | 1998-12-16 |
Family
ID=25923100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94100690A Expired - Lifetime EP0612586B1 (de) | 1993-02-15 | 1994-01-19 | Schleifscheibe für handgeführte Schleifmaschinen, insbesondere Trenn-Schleifscheibe |
Country Status (5)
Country | Link |
---|---|
US (1) | US5584755A (de) |
EP (1) | EP0612586B1 (de) |
AT (1) | ATE174544T1 (de) |
CA (1) | CA2114582A1 (de) |
ES (1) | ES2127298T3 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4338492A1 (de) * | 1993-11-11 | 1995-05-18 | Rueggeberg August | Trenn-Schleifscheibe für stationäre Schleifmaschinenund deren Verwendung |
EP0909612B1 (de) * | 1997-10-16 | 2002-06-19 | August Rüggeberg GmbH & Co. | Schleifscheibe |
DE19826919A1 (de) * | 1998-06-17 | 1999-12-23 | Hilti Ag | Werkzeug zur Bearbeitung von harten Untergründen |
JP2002127020A (ja) * | 2000-10-26 | 2002-05-08 | Noritake Co Ltd | 研削砥石の再生方法 |
JP2003039331A (ja) | 2001-08-01 | 2003-02-13 | Noritake Co Ltd | 樹脂製コア部を有する砥石車とその製造方法及び再利用方法 |
AT502285B1 (de) * | 2004-10-19 | 2008-12-15 | Gissing Gerhard | Trennschleifring mit doppelter kernspannvorrichtung |
US20070023026A1 (en) * | 2005-07-28 | 2007-02-01 | Broyles Michelle | Dicing blade |
JP2010052081A (ja) * | 2008-08-27 | 2010-03-11 | Fuji Grinding Wheel Mfg Co Ltd | 回転砥石の製造方法及び該製造方法によって製造された回転砥石 |
US20100319513A1 (en) * | 2009-06-21 | 2010-12-23 | Yu-Chang Hsu | Combined splitting blade |
CN104684687B (zh) * | 2012-08-28 | 2017-06-30 | 圣戈班磨料磨具有限公司 | 大直径切削工具 |
JP5893669B2 (ja) * | 2014-04-30 | 2016-03-23 | 富士製砥株式会社 | 回転砥石の製造法及び該製造法によって製造した回転砥石 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE528134A (de) * | ||||
US3123948A (en) * | 1964-03-10 | Reinforced | ||
DE661847C (de) * | 1938-06-28 | Carl Krug Dr Ing | Umlaufendes Schleifwerkzeug | |
US2134738A (en) * | 1936-10-12 | 1938-11-01 | Jr Hans P Scheel | Artificial pulp grinding stone and method of making same |
US2726493A (en) * | 1953-12-15 | 1955-12-13 | Us Rubber Co | Grinding wheel manufacture |
DE1291648B (de) * | 1962-12-04 | 1969-03-27 | Itt Ind Gmbh Deutsche | Schleifscheibe mit Verstaerkungsgeflecht |
US3256644A (en) * | 1963-01-14 | 1966-06-21 | Wakefield Corp | Reinforced snagging wheel |
US3262230A (en) * | 1964-02-10 | 1966-07-26 | Norton Co | Reinforcement of molded abrasive articles |
US3262231A (en) * | 1964-07-01 | 1966-07-26 | Norton Co | Internal reinforcement of molded rotatable articles |
US3487590A (en) * | 1967-02-02 | 1970-01-06 | Itt | Reinforced grinding wheel |
US3640027A (en) * | 1969-07-25 | 1972-02-08 | Sel Rex Corp | Annular cutting blades |
US3838543A (en) * | 1970-05-25 | 1974-10-01 | Norton Co | High speed cut-off wheel |
US3804687A (en) * | 1971-06-02 | 1974-04-16 | Dresser Ind | Method and apparatus for reinforcing cup-type grinding wheels |
US3828485A (en) * | 1971-10-12 | 1974-08-13 | Clure C Mc | Reinforced abrasive wheels |
DE7240816U (de) * | 1972-11-07 | 1973-03-15 | Winter E & Sohn | Kreissägeblatt mit einem ringförmigen Diamantschleifbelag |
US3867795A (en) * | 1973-10-16 | 1975-02-25 | Norton Co | Composite resinoid bonded abrasive wheels |
DE2719741A1 (de) * | 1977-05-03 | 1978-11-09 | Geb Riemer Elfriede Peltz | Schleifscheibe |
EP0083380A1 (de) * | 1981-12-30 | 1983-07-13 | Sankyo Diamond Industrial Co., Ltd. | Diamant-Gesteinssäge |
DE3819199A1 (de) * | 1988-06-06 | 1989-12-07 | Leurop Leutheusser Kg | Verfahren zur herstellung von glasfaserronden fuer schleif- oder trennscheiben und vorrichtung zur durchfuehrung des verfahrens |
JPH0673817B2 (ja) * | 1989-03-10 | 1994-09-21 | 三和ダイヤモンド工業株式会社 | カッター |
US5040341A (en) * | 1989-04-17 | 1991-08-20 | Hiroaki Okinaga | Rotary cutter wheel |
EP0424953B1 (de) * | 1989-10-27 | 1995-06-14 | Sumitomo Electric Industries, Ltd. | Dünne Klinge mit innerer peripherischer Schneide: Verfahren zu ihrer Herstellung |
-
1994
- 1994-01-19 EP EP94100690A patent/EP0612586B1/de not_active Expired - Lifetime
- 1994-01-19 AT AT94100690T patent/ATE174544T1/de not_active IP Right Cessation
- 1994-01-19 ES ES94100690T patent/ES2127298T3/es not_active Expired - Lifetime
- 1994-01-31 CA CA002114582A patent/CA2114582A1/en not_active Abandoned
- 1994-02-14 US US08/194,989 patent/US5584755A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US5584755A (en) | 1996-12-17 |
CA2114582A1 (en) | 1994-08-16 |
ES2127298T3 (es) | 1999-04-16 |
EP0612586A1 (de) | 1994-08-31 |
ATE174544T1 (de) | 1999-01-15 |
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