EP0387246A1 - Schleiffolie und schleifverfahren. - Google Patents
Schleiffolie und schleifverfahren.Info
- Publication number
- EP0387246A1 EP0387246A1 EP19870907926 EP87907926A EP0387246A1 EP 0387246 A1 EP0387246 A1 EP 0387246A1 EP 19870907926 EP19870907926 EP 19870907926 EP 87907926 A EP87907926 A EP 87907926A EP 0387246 A1 EP0387246 A1 EP 0387246A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grinding
- abrasive
- foil
- strip
- pad
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000011888 foil Substances 0.000 title claims description 18
- 238000005299 abrasion Methods 0.000 title abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 28
- 239000010959 steel Substances 0.000 claims abstract description 28
- 239000000853 adhesive Substances 0.000 claims abstract description 11
- 230000001070 adhesive effect Effects 0.000 claims abstract description 9
- 238000000227 grinding Methods 0.000 claims description 49
- 238000001816 cooling Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 3
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 10
- 239000011230 binding agent Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000123 paper Substances 0.000 description 6
- 238000009837 dry grinding Methods 0.000 description 4
- 238000005304 joining Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 229920000180 alkyd Polymers 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 210000003298 dental enamel Anatomy 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 244000000626 Daucus carota Species 0.000 description 2
- 235000002767 Daucus carota Nutrition 0.000 description 2
- 244000061456 Solanum tuberosum Species 0.000 description 2
- 235000002595 Solanum tuberosum Nutrition 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005686 electrostatic field Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 235000012015 potatoes Nutrition 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000037380 skin damage Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
Definitions
- Abrasive film and process abrasive film, an abrasive on flexible film as an abrasive pad with special properties, such as high thermal conductivity, heat resistance and tear resistance, instead of, or in combination with, other pads for abrasives, e.g. Paper or tissue and a grinding process for the production of self-cooling grinding surfaces for soluble replacement on stationary, rotating, oscillating, rotating receptacles with appropriately designed surfaces for firm and safe holding during grinding, to reduce the risk of accidents, for many applications instead of ceramic or plastic-bound Grinding wheels, especially for cool dry grinding due to the good heat conduction of the film base, without cooling emulsion to avoid skin damage, allergies, purchase, storage, supply and disposal.
- thermoplastic film is known from the German Auslegeschrift 700102 and should not break in contrast to paper and tissue documents, because here the binding agent cannot penetrate into the non-porous film. These thermoplastic films have far too little heat resistance for the intended purpose.
- the common abrasive pads also have poor thermal conductivity. (When grinding, 2000 ° C can occur on the abrasive grain) The mechanical strength is severely impaired by the poor heat dissipation and heat resistance and therefore often leads to premature destruction of the abrasive pad before the abrasive coating could be used sufficiently.
- the clamping ends of sanding sheets on orbital sanders (vibratory sanders) that require tight clamping are particularly torn.
- Endless sanding belts tend to throw and are unusable. They rot through the absorption of moisture.
- the sanding belt end closures are also weak points that tear particularly often.
- the friction Excessive heating between the sanding shoe and the sanding belt often leads to destruction.
- the sanding belt runs straight due to the spherical or double-tapered design of the rollers. As a result, the sanding belt is stretched in the middle and compressed under the sanding shoe. This constant flexing stress is greatest when the strap ends are closed. Grinding disks create a constant risk of accidents due to the possible shattering, especially when the often annoying protective hood is removed. Cool grinding is often only possible by adding cooling emulsion.
- the Velcro fastener which is also known as a shoe fastener, enables an exchange of sanding sheets on rotating sanding plates by means of a quick-release fastening.
- One side of the closure is glued to the abrasive cloth and the other side of the closure is glued to the holder. After the abrasive has been consumed, it is thrown away with the Velcro fastener, which makes grinding very expensive. Precise joining is difficult. Static electricity can hardly be eliminated. The many small spaces between the Velcro fasteners make cleaning very difficult.
- a disadvantage is the pressure to be applied when joining. Sin sterilization requires easy cleaning, so that applications in the food sector are hardly considered.
- roller grinding machines are used for face grinding of large panels to size, e.g. Door leaves.
- a precise roller diameter is required for very tight abrasive paper pads. Such machines are also referred to as cylindrical grinding machines and are also used particularly for reeling chipboard.
- Sanding film characterized by the use of a steel strip film as a flexible abrasive base and a grinding process for the production of self-cooling grinding surfaces for snow-soluble replacement and secure holding on rotating, oscillating, rotating recordings, including still recordings, using the grinding foil and the recording to carry out the process with a holding surface on the receptacle, which is formed by a permanent magnetic adhesive pad and or by holding parts directed vertically to the holding surface on the steel strip and congruent recesses in the receiving surface.
- a steel strip film as a flexible abrasive pad has all the properties to avoid the disadvantages of the common abrasive pad. Namely good thermal conductivity, heat and tear resistance, flexibility paired with dimensional stability, deformability and weldability, water resistance and non-rotability, low sliding friction between the sanding pad and the steel strip, electrical conductivity for easy dissipation of static electricity.
- strip steels are also produced in very small thicknesses and it is customary to refer to thicknesses between 0.025 mm and 0.25 mm as strip steel foils.
- the steel strip according to DIN 1624/1544 was found to be a useful steel strip, and steel strip foils made of this material can be used as sanding pad underlay from 0.05 mm. (This is half the thickness of a thin typewriter paper)
- a practical, safe and inexpensive adhesive pad on the receiving surface is a permanent magnetic magnetic film.
- anisotropic magnetization it has the greatest adhesive force and, with a thickness of 1.5 mm, is up to all requirements that can arise during grinding.
- a special embodiment of the invention leads to a reduction in the magnetic foil thickness to 1 mm while at the same time increasing the shear strength, increasing the cooling and, moreover, achieving a precise joining to eliminate an unbalance.
- the grinding film is provided with holding parts that are directed vertically.
- the receptacles for the sanding sheets have congruent recesses.
- the preferred holding parts are in the form of inner flanges which are obtained in a material-saving manner by deforming the steel strip foil by widening a hole so that an annular tubular part is obtained. This is the inner flange.
- the corresponding recess in the receptacle is a blind or through hole.
- Two spaced inner flanges ensure that the abrasive film lies precisely on when joining.
- the corresponding shear forces occurring during grinding can be absorbed and the calculation can be carried out v / ie with rivets, whereby the shear strength can assume large values even with thin strip steel foils.
- the requirement is that they be underlaid with a sheet metal underlay of approximately 0.2 mm thick on an insulating plate of approximately 4 mm in order to obtain a sufficiently high adhesive force.
- suction holes are provided in the receptacle for extracting the grinding dust. Then the inner flare and hole arrangements in the magnetic film, the sheet steel underlay and the insulating plate are arranged congruently with the suction holes. This has the advantage that penetration of grinding dust between magnetic film and grinding film is prevented with certainty by the inner flare.
- the grinding foil-band steel underlays become appropriately used in accordance with their tensile strengths which increase with the thickness, namely for 0.05 mm to 0.25 mm for very fine, fine, medium and coarse grains.
- the strip steel foils are also provided with vertical holding parts to eliminate the harmful flexing movement, for which purpose the inner flanges are also preferably used, which are arranged at intervals in the central longitudinal line.
- the casters serving as receptacles are provided with a recess in the center of a circumferential groove into which the inner flanges are immersed during belt circulation, with at least two inner flanges per roller being immersed at the same time.
- the circumferential surfaces of the rollers are cylindrical.
- the cooling is enhanced by the direct contact between the steel strip and the metal tread and is further enhanced by the air vortices generated by the inner flanges, particularly in the circumferential grooves, which cool the center of the belt in particular, where the greatest heat occurs under the sanding pad.
- several parallel rows of inner flanges and circulation grooves can of course also be arranged.
- the through-holes act as cooling aids, particularly with rotating sanding plates, due to the air swirl.
- the good heat resistance of the steel strip film naturally offers, in addition to the common binders such as phenol and alkyd resins, also binders of higher heat resistance, such as the powder coatings made of epoxy and polyurethane resins and also the organic-inorganic Ormosile, but also a ceramic bond, such as glaze and enamel melts, as are used, for example, in the enamel industry for the continuous coating of strip steel, and likewise, as is customary in the abrasive industry, the coating is carried out in an electrostatic field, so that the melt is granulated instead of the sticky resin.
- the band steel foil is in the known way in the electrostatic field coated, for example by an alkyd resin as a binder, as it is also used for waterproof abrasive papers.
- the powdered binder for example powder coating, Ormosil powder, enamel frit powder, is applied electrostatically, melted and the grain is electrostatically sprinkled into the melt coating.
- the sanding film in the form of a lamination with sandpaper can enormously reinforce it and enable it to adhere to itself, whereby the use of thin papers is inexpensive.
- the flexibility in direct coating of the steel strip film is greater with the same film thickness.
- Sanding films have a longer service life due to the considerable increase in quality. It enables cooler grinding and a quickly replaceable abrasive coating in the form of self-adhesive abrasive foil sheets on mounts and surfaces of all kinds provided with permanent magnetic foils. It enables secure attachment by simply placing it on orbital sanders, so that the complex clamping devices can be eliminated and tearing of belt ends is a thing of the past.
- the advantage of the peeling machine drums is that the flexible sanding film automatically attaches itself to the drum wall when it is lined with the magnetic film, and this flexibility therefore makes it possible to adapt to any drum radius.
- the abrasive coating is much more open and therefore more abrasive. Any peeling deposits in the form of abrasive films can be removed with one hand and can even be cleaned and sterilized by boiling, which is already possible with an alkyd resin bond. Even under water there is no decrease in the adhesive force of the magnetic film and there is no material fatigue at all, as is the case with the Velcro fastener, which can suffer a loss of adhesive force of 50%.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/DE1987/000553 WO1989004742A1 (en) | 1987-11-27 | 1987-11-27 | Abrasive foil and abrasion process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0387246A1 true EP0387246A1 (de) | 1990-09-19 |
| EP0387246B1 EP0387246B1 (de) | 1992-07-01 |
Family
ID=6803598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP87907926A Expired - Lifetime EP0387246B1 (de) | 1987-11-27 | 1987-11-27 | Schleiffolie und schleifverfahren |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5081798A (de) |
| EP (1) | EP0387246B1 (de) |
| DE (1) | DE3780176D1 (de) |
| WO (1) | WO1989004742A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5660276A (en) * | 1993-12-03 | 1997-08-26 | Winnard; Stanley D. | Magnetic tool organizers, and tool box with magnetic organizers |
| DE4402550A1 (de) * | 1994-01-28 | 1995-08-03 | Raymond A Gmbh & Co Kg | Verklebbares Befestigungselement zum Halten von Bau- oder Funktionsteilen auf Trägerteilen |
| US6096107A (en) * | 2000-01-03 | 2000-08-01 | Norton Company | Superabrasive products |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2292991A (en) * | 1941-03-06 | 1942-08-11 | Behr Manning Corp | Flexible abrasive product |
| US2499933A (en) * | 1949-08-04 | 1950-03-07 | Joseph F Smul | Surface cleaning attachment |
| CH316478A (de) * | 1953-07-03 | 1956-10-15 | Baumgartner Max | Bandsägevorrichtung |
| US4330027A (en) * | 1977-12-22 | 1982-05-18 | Allied Corporation | Method of making strips of metallic glasses containing embedded particulate matter |
| CH630549A5 (en) * | 1978-05-29 | 1982-06-30 | Shikhirev Boris N | Apparatus for grinding sheet-metal materials by means of magnetic particles |
| US4222204A (en) * | 1979-06-18 | 1980-09-16 | Benner Robert L | Holder for an abrasive plate |
| US4377081A (en) * | 1980-10-09 | 1983-03-22 | Konrad Joseph D | Belt surfacing tool |
| JPH01281817A (ja) * | 1988-04-28 | 1989-11-13 | Yamaha Motor Co Ltd | 円盤ヤスリ,取付プレート及び研磨装置 |
-
1987
- 1987-11-27 WO PCT/DE1987/000553 patent/WO1989004742A1/de not_active Ceased
- 1987-11-27 DE DE8787907926T patent/DE3780176D1/de not_active Expired - Lifetime
- 1987-11-27 US US07/477,967 patent/US5081798A/en not_active Expired - Fee Related
- 1987-11-27 EP EP87907926A patent/EP0387246B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8904742A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1989004742A1 (en) | 1989-06-01 |
| US5081798A (en) | 1992-01-21 |
| DE3780176D1 (de) | 1992-08-06 |
| EP0387246B1 (de) | 1992-07-01 |
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Legal Events
| Date | Code | Title | Description |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CLASEN, HEINRICH |
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| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
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