EP2366498A2 - Sanding plate - Google Patents
Sanding plate Download PDFInfo
- Publication number
- EP2366498A2 EP2366498A2 EP11156704A EP11156704A EP2366498A2 EP 2366498 A2 EP2366498 A2 EP 2366498A2 EP 11156704 A EP11156704 A EP 11156704A EP 11156704 A EP11156704 A EP 11156704A EP 2366498 A2 EP2366498 A2 EP 2366498A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- base plate
- air guide
- plastic
- suction
- sanding
- 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
- 238000000227 grinding Methods 0.000 claims abstract description 28
- 239000004033 plastic Substances 0.000 claims abstract description 23
- 229920003023 plastic Polymers 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 4
- 239000010935 stainless steel Substances 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 239000004952 Polyamide Substances 0.000 claims description 10
- 229920002647 polyamide Polymers 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 238000005187 foaming Methods 0.000 claims description 7
- 239000002984 plastic foam Substances 0.000 claims description 6
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 2
- 239000004417 polycarbonate Substances 0.000 claims description 2
- 229920000515 polycarbonate Polymers 0.000 claims description 2
- 239000011496 polyurethane foam Substances 0.000 claims description 2
- 229920002457 flexible plastic Polymers 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
Definitions
- the invention relates to a grinding plate having a base plate which is fixedly connected to a pad member of a first compliant plastic, wherein on the base plate a tool holder for connection to a motor-driven drive shaft is provided and in the pad part a plurality of suction channels is provided in the suction openings on a work surface.
- Such a grinding plate is from the DE 20 2009 000 880 U1 known.
- a sanding pad which has an elastic sanding pad, which is accommodated on a support body made of a harder material. Through the support body and the elastic sanding pad suction channels extend, which open into suction openings on a work surface.
- the invention has for its object to provide an improved grinding plate and a method for producing such a grinding plate, whereby a simple production is ensured and a clean design of the suction can be obtained.
- the suction channels are formed in the hollow air guide part and delimited from the flexible plastic of the pillow part.
- grinding plate encloses the air guide part to the base plate through open suction channels, which are closed by contact with the base plate, which open through suction openings on the work surface and which are connected by suction on the base plate with a suction channel.
- the air guide part is preferably airtight connected to the base plate.
- the cushion member is integrally connected to the base plate and the air guide member by the first compliant plastic.
- the base plate is preferably made of metal, preferably of an aluminum alloy or of a stainless steel.
- the base plate may be made of a plastic, preferably a high strength plastic, e.g. a glass fiber reinforced plastic.
- the cushion part is preferably made of a polyurethane foam.
- the air guide member may for example consist of PVC, a polycarbonate, ABS, polyamide (PA) or a similar relatively hard plastic material.
- a quick release for surface attachment of an abrasive such as an abrasive paper, preferably a hook and loop fastener material is provided on the work surface.
- the suction openings (26) on the working surface (28) and the suction openings (18, 20) on the side of the drive shaft (30) have different pitch circle diameter.
- the air ducts thus allow a balance between a displacement of the suction channels or suction ..
- a hook-and-loop fastening material is introduced on the side facing away from the base plate to form a working surface, which is designed to fasten an abrasive.
- a grinding plate according to the invention is shown and designated overall by numeral 10.
- the grinding plate 10 consists of a flat base plate 14 made of stainless steel, an aluminum alloy or of polyamide (PA), what a cushion member 12 made of a resilient plastic, such as polyurethane, is foamed.
- a cushion member 12 made of a resilient plastic, such as polyurethane, is foamed.
- an air guide member 22 made of a harder plastic than the cushion member 12, e.g. made of polyamide (PA).
- PA polyamide
- the working surface 28 is covered with a Velcro material surface, which is adapted to receive an abrasive, such as an abrasive paper. The abrasive can thus be easily attached to the working surface 28 of the pad member and replaced if necessary.
- the suction channels 24 open at the side of the base plate 14 in suction openings 18, 20.
- Fig. 2 is additionally an associated oscillation drive for driving the grinding plate schematically indicated, wherein only the drive shaft 30 is indicated by dashed lines.
- a tool holder 16 in the form of a recess in star shape is formed with rounded edges, with which a positive attachment to the drive shaft 30 is made possible.
- a circular recess 31 is provided in the grinding pad 12 in the region of the tool holder 16, so that the surface of the Base plate 14 is accessible from the side of the work surface 28 ago.
- the grinding plate 10 can be placed on the end of the drive shaft 30 and fixed by a fastening means 32 which is inserted into the recess 31.
- a compact suction hood 34 is further provided which extends around the drive shaft 30 and surrounds the space above the suction openings 18, 20, so that an extraction of grinding dust through the suction channels 24 is made possible in a subsequent suction channel 36, which is connected to a suitable vacuum source, such as a vacuum cleaner.
- centering webs 21 which extend around the tool holder or mounting holes 16 around, serve to center the grinding plate 10 on the drive shaft 30.
- the base plate 14 is provided, which consists for example of polyamide (PA).
- PA polyamide
- the air guide member 22 has, starting from a central, flat cylindrical section, three flat web sections which extend outward at intervals of 120 ° from the central circular section and each terminate in a rounded end. Between these three web-shaped sections, three more semicircular sections are provided, which likewise extend outward from the central cylindrical section.
- the formation of the suction channels 22 is ensured to three suction openings 26 each in the region of a tip of the triangular Working surface 28 and three smaller suction ports to connect, which surround the recess 31.
- the air guide member 22 is hollow and open only to the grinding plate 14.
- the air guide member 22 is made of a plastic which is harder than the plastic from which the cushion member 12 is made, for example of PVC.
- the air guide member 22 is mounted on the back of the base plate 14, wherein, for example, centering webs may be provided on the air guide member 22, which engage in corresponding centering openings on the base plate 14 (not shown).
- the air guide member 22 may be locked to the base plate 14, glued, welded or otherwise secured to ensure an airtight seal between the air guide member 22 and the base plate 14.
- the air guide member 22 may be ultrasonically welded to the base plate 14. Due to the connection between the base plate 14 and the air guide part 22, closed air ducts 24 are formed on all sides, which open into the suction openings 18, 20 on the surface of the base plate 14.
- the air ducts 24 extend in the grinding plate 10 to compensate for an offset between the pitch circle diameter of the suction openings 26 on the working surface 28 and the pitch circle diameter of the suction openings 18, 20 on the machine side.
- the pitch circle diameter of the suction openings 18, 20 is smaller than the pitch circle diameter of the suction openings 26 on the work surface 28.
- the reverse case is conceivable.
- the thus formed unit of air guide member 22 and base plate 14 is then in a suitable form with a plastic foam, e.g. polyurethane-based, foamed to form the pad member 12.
- a plastic foam e.g. polyurethane-based, foamed to form the pad member 12.
- the Velcro closure material for the working surface 28 can be formed with.
- the abrasive plates according to the invention can be used with any drives. Although it is to be used in conjunction with a known type of oscillation drive in which the drive shaft is driven at a high frequency of e.g. 5000 to 25,000 oscillations per minute and a small pivoting angle in the range of about 0.5 and 7 ° is pivoted, particularly preferred. However, a use with a rotating and / or eccentric drive is conceivable.
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)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
Description
Die Erfindung betrifft eine Schleifplatte mit einer Grundplatte, die mit einem Kissenteil aus einem ersten nachgiebigen Kunststoff fest verbunden ist, wobei an der Grundplatte eine Werkzeugaufnahme zur Verbindung mit einer motorisch antreibbaren Antriebswelle vorgesehen ist und im Kissenteil eine Mehrzahl von Absaugkanälen vorgesehen ist, die in Saugöffnungen an einer Arbeitsfläche ausmünden.The invention relates to a grinding plate having a base plate which is fixedly connected to a pad member of a first compliant plastic, wherein on the base plate a tool holder for connection to a motor-driven drive shaft is provided and in the pad part a plurality of suction channels is provided in the suction openings on a work surface.
Eine derartige Schleifplatte ist aus der
Aus dieser Druckschrift ist ein Schleifteller bekannt, der ein elastisches Schleifkissen aufweist, das an einem Stützkörper aus einem härteren Material aufgenommen ist. Durch den Stützkörper und das elastische Schleifkissen erstrecken sich Absaugkanäle, die in Saugöffnungen an einer Arbeitsfläche ausmünden.From this document, a sanding pad is known, which has an elastic sanding pad, which is accommodated on a support body made of a harder material. Through the support body and the elastic sanding pad suction channels extend, which open into suction openings on a work surface.
Über die Herstellung einer derartigen Schleifplatte ist dieser Druckschrift nichts entnehmbar. In der Regel werden solche Absaugkanäle beim Schäumvorgang mittels beweglicher Schieber im Schäumwerkzeug freigehalten. Am Schnittpunkt von längs und quer verlaufenden Kanälen ist die Abdichtung der Schieber gegeneinander schwierig. So kann es hier, insbesondere mit zunehmendem Verschleiß des Werkzeugs, dazu kommen, dass Kunststoffschaum in die Kanäle eindringt, womit bei der fertigen Schleifplatte die Schleifstaubabfuhr beeinträchtigt wird. Auch sind die Kanäle an sich nicht sehr stabil, da deren Wand vom Schaumstoff gebildet wird.About the production of such a grinding plate of this document is not removable. As a rule, such suction ducts are kept free during the foaming process by means of movable slides in the foaming tool. At the intersection of longitudinal and transverse channels, the sealing of the slide against each other is difficult. So it can happen here, in particular with increasing wear of the tool, to the fact that plastic foam penetrates into the channels, which in the finished grinding plate, the grinding dust removal is impaired. Also, the channels are not very stable per se, as the wall of the foam is formed.
Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine verbesserte Schleifplatte und ein Verfahren zur Herstellung einer solchen Schleifplatte anzugeben, womit eine einfache Herstellung gewährleistet ist und eine saubere Ausgestaltung der Absaugkanäle erhalten werden kann.Against this background, the invention has for its object to provide an improved grinding plate and a method for producing such a grinding plate, whereby a simple production is ensured and a clean design of the suction can be obtained.
Diese Aufgabe wird bei einer Erfindung gemäß der eingangs genannten Art dadurch gelöst, dass im Kissenteil ein hohles Luftführungsteil aus einem zweiten Kunststoff, der härter als der erste Kunststoff ist, aufgenommen ist, das die Absaugkanäle gegen den ersten Kunststoff zumindest teilweise abgrenzt.This object is achieved in an invention according to the type mentioned above in that in the pad part, a hollow air guide part of a second plastic, which is harder than the first plastic, is added, which at least partially delimits the suction against the first plastic.
Erfindungsgemäß werden die Absaugkanäle im hohlen Luftführungsteil ausgebildet und gegenüber dem nachgiebigen Kunststoff des Kissenteils abgegrenzt. Bei der Herstellung des Kissenteils müssen somit die Luftabsaugkanäle nicht mehr durch Schieber freigehalten werden, sondern sind durch das Luftführungsteil vorgegeben.According to the invention, the suction channels are formed in the hollow air guide part and delimited from the flexible plastic of the pillow part. In the production of the cushion part thus the Luftabsaugkanäle no longer need to be kept free by slide, but are given by the air guide part.
Es ist so eine zuverlässige und einfache Herstellung gewährleistet.It ensures such a reliable and easy production.
Die Erfindung wird ferner durch ein Verfahren zur Herstellung einer Schleifplatte mit den folgenden Schritten gelöst:
- Bereitstellen einer Grundplatte, an der eine Werkzeugaufnahme, vorzugsweise in Form einer Befestigungsöffnung, sowie eine Mehrzahl von Absaugöffnungen vorgesehen ist;
- Bereitstellen eines hohlen Luftführungsteils aus einem Kunststoff, das zu einer Seite hin offene Hohlräume umschließt;
- Befestigen des Luftführungsteils auf der Grundplatte, so dass zwischen der Grundplatte und dem Luftführungsteil Absaugkanäle gebildet werden, die mit den Absaugöffnungen verbunden sind;
- Anschäumen eines Kunststoffschaums an die Grundplatte und das Luftführungsteil zur Ausbildung eines nachgiebigen Kissenteils, das mit der Grundplatte und dem Luftführungsteil stoffschlüssig verbunden ist;
- Freilegen von Öffnungen im Kissenteil, um die Werkzeugaufnahme freizulegen und die Absaugkanäle über Saugöffnungen mit der Arbeitsfläche zu verbinden.
- Providing a base plate on which a tool holder, preferably in the form of a mounting opening, and a plurality of suction openings is provided;
- Providing a hollow air guide member made of a plastic enclosing cavities open to one side;
- Attaching the air guide member to the base plate so that suction channels are formed between the base plate and the air guide member, which are connected to the suction openings;
- Foaming a plastic foam to the base plate and the air guide member to form a resilient pad member which is integrally bonded to the base plate and the air guide member;
- Exposing openings in the pad part to expose the tool holder and to connect the suction channels to the work surface via suction openings.
Auf diese Weise wird die Aufgabe der Erfindung hinsichtlich des Verfahrens gelöst.In this way, the object of the invention with respect to the method is achieved.
Es ist eine einfache und zuverlässige Herstellung der Schleifplatte gewährleistet, wobei eine saubere Führung der Absaugkanäle unabhängig vom Schäumvorgang bei der Ausbildung des Kissenteils erhalten wird.It is ensured a simple and reliable production of the grinding plate, wherein a clean guidance of the suction channels is obtained regardless of the foaming process in the formation of the cushion part.
In vorteilhafter Weiterbildung der erfindungsgemäßen Schleifplatte umschließt das Luftführungsteil zur Grundplatte hin offene Absaugkanäle, die durch Anlage an der Grundplatte abgeschlossen sind, die durch Saugöffnungen an der Arbeitsfläche ausmünden und die durch Absaugöffnungen an der Grundplatte mit einem Absaugkanal verbindbar sind.In an advantageous embodiment of the invention grinding plate encloses the air guide part to the base plate through open suction channels, which are closed by contact with the base plate, which open through suction openings on the work surface and which are connected by suction on the base plate with a suction channel.
Auf diese Weise ist eine einfache Montage des Luftführungsteils an der Grundplatte gewährleistet.In this way, a simple assembly of the air guide part is ensured on the base plate.
Das Luftführungsteil ist hierbei vorzugsweise mit der Grundplatte luftdicht verbunden.The air guide part is preferably airtight connected to the base plate.
Es kann hierzu etwa mit der Grundplatte verrastet, verklebt oder verschweißt sein.For this purpose, it can be latched, glued or welded to the base plate.
Auf diese Weise ist eine sichere Luftführung durch die Absaugkanäle gewährleistet.In this way, a secure air flow through the suction is guaranteed.
In weiter vorteilhafter Ausgestaltung der Erfindung ist das Kissenteil mit der Grundplatte und dem Luftführungsteil durch den ersten nachgiebigen Kunststoff stoffschlüssig verbunden.In a further advantageous embodiment of the invention, the cushion member is integrally connected to the base plate and the air guide member by the first compliant plastic.
Auf diese Weise ist eine einfache und zuverlässige Herstellung ermöglicht.In this way, a simple and reliable production is possible.
Die Grundplatte besteht vorzugsweise aus Metall, vorzugsweise aus einer Aluminiumlegierung oder aus einem rostfreien Stahl.The base plate is preferably made of metal, preferably of an aluminum alloy or of a stainless steel.
Hierdurch ergibt sich der Vorteil, dass die Werkzeugaufnahme, die vorzugsweise als Öffnung zur formschlüssigen Verbindung mit einer Antriebswelle ausgebildet ist, hochfest gestaltet werden kann, so dass ein Ausschlagen im Betrieb vermieden werden kann.This results in the advantage that the tool holder, preferably as an opening for the positive connection with a drive shaft is formed, high-strength can be designed so that knocking out during operation can be avoided.
Alternativ kann die Grundplatte auch aus einem Kunststoff, vorzugsweise aus einem hochfesten Kunststoff, z.B. einem glasfaserverstärkten Kunststoff, bestehen.Alternatively, the base plate may be made of a plastic, preferably a high strength plastic, e.g. a glass fiber reinforced plastic.
Das Kissenteil besteht vorzugsweise aus einem Polyurethanschaum.The cushion part is preferably made of a polyurethane foam.
Ein derartiges Material hat sich durch seine hohe Festigkeit und ausreichende Widerstandsfähigkeit bei gleichzeitiger Elastizität bewährt.Such a material has been proven by its high strength and sufficient resistance with simultaneous elasticity.
Das Luftführungsteil kann beispielsweise aus PVC, aus einem Polycarbonat, aus ABS, aus Polyamid (PA) oder einem ähnlichen relativ harten Kunststoffmaterial bestehen.The air guide member may for example consist of PVC, a polycarbonate, ABS, polyamide (PA) or a similar relatively hard plastic material.
In weiter vorteilhafter Ausgestaltung der Erfindung ist an der Arbeitsfläche ein Schnellverschluss zur flächigen Befestigung eines Schleifmittels, etwa eines Schleifpapiers, vorzugsweise ein Klettverschlussmaterial, vorgesehen.In a further advantageous embodiment of the invention, a quick release for surface attachment of an abrasive, such as an abrasive paper, preferably a hook and loop fastener material is provided on the work surface.
Hierdurch ist eine einfache und schnelle Befestigung bzw. ein schneller Wechsel des Schleifmittels ermöglicht.As a result, a simple and quick attachment or a quick change of the abrasive is possible.
Gemäß einer weiteren Ausführung der Erfindung haben die Saugöffnungen (26) an der Arbeitsfläche (28) und die Absaugöffnungen (18, 20) an der Seite der Antriebswelle (30) voneinander abweichende Lochkreisdurchmesser.According to a further embodiment of the invention, the suction openings (26) on the working surface (28) and the suction openings (18, 20) on the side of the drive shaft (30) have different pitch circle diameter.
Die Luftführungskanäle ermöglichen so einen Ausgleich zwischen einem Versatz der Saugkanäle bzw. Absaugkanäle..The air ducts thus allow a balance between a displacement of the suction channels or suction ..
In vorteilhafter Weiterbildung des erfindungsgemäßen Verfahrens wird beim Anschäumen des Kunststoffschaums an die Grundplatte und das Luftführungsteil ein Klettverschlussmaterial an der der Grundplatte abgewandten Seite zur Ausbildung einer Arbeitsfläche mit eingebracht, die zur Befestigung eines Schleifmittels ausgebildet ist.In an advantageous development of the method according to the invention, during the foaming of the plastic foam to the base plate and the air guide part, a hook-and-loop fastening material is introduced on the side facing away from the base plate to form a working surface, which is designed to fasten an abrasive.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale der Erfindung nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der Erfindung zu verlassen.It is understood that the features of the invention mentioned above and those yet to be explained below can be used not only in the particular combination indicated, but also in other combinations or in isolation, without departing from the scope of the invention.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der Beschreibung eines bevorzugten Ausführungsbeispiels unter Bezugnahme auf die Zeichnung. Es zeigen:
- Fig. 1
- eine Aufsicht einer erfindungsgemäßen Schleifplatte;
- Fig. 2
- einen Schnitt durch die Schleifplatte gemäß
Fig. 1 gemäß der Linie II-II; - Fig. 3
- eine perspektivische Ansicht der Schleifplatte gemäß
Fig. 1 von schräg oben; - Fig. 4
- eine perspektivische Ansicht der Schleifplatte gemäß
Fig. 1 von der Arbeitsseite her; - Fig. 5
- eine Aufsicht auf die Grundplatte mit daran befestigtem Luftführungsteil;
- Fig. 6
- einen Schnitt durch die Kombination gemäß
Fig. 5 längs der Linie VI-VI; - Fig. 7
- eine perspektivische Ansicht der Grundplatte mit aufgesetztem Luftführungsteil und
- Fig. 8
- eine perspektivische Ansicht der Grundplatte mit aufgesetztem Luftführungsteil von der Seite her, an der die Befestigung an einer Antriebswelle erfolgt.
- Fig. 1
- a plan view of a grinding plate according to the invention;
- Fig. 2
- a section through the grinding plate according to
Fig. 1 according to the line II-II; - Fig. 3
- a perspective view of the grinding plate according to
Fig. 1 from diagonally above; - Fig. 4
- a perspective view of the grinding plate according to
Fig. 1 from the work side; - Fig. 5
- a plan view of the base plate with attached air guide part;
- Fig. 6
- a section through the combination according to
Fig. 5 along the line VI-VI; - Fig. 7
- a perspective view of the base plate with attached air guide part and
- Fig. 8
- a perspective view of the base plate with attached air guide part from the side at which the attachment to a drive shaft.
In den
Die Schleifplatte 10 besteht aus einer ebenen Grundplatte 14 aus Edelstahl, aus einer Aluminiumlegierung oder aus aus Polyamid (PA), woran ein Kissenteil 12 aus einem nachgiebigen Kunststoff, etwa aus Polyurethan, angeschäumt ist. Innerhalb des Kissenteils 12 ist ein Luftführungsteil 22 aufgenommen, das aus einem härteren Kunststoff als das Kissenteil 12 besteht, z.B. aus Polyamid (PA) . Durch das Luftführungsteil 22 verlaufen Absaugkanäle 26, die in Saugöffnungen 26 an einer Arbeitsfläche 28 ausmünden. Die Arbeitsfläche 28 ist mit einem Klettverschlussmaterial flächig belegt, das zur Aufnahme eines Schleifmittels, etwa eines Schleifpapiers, ausgebildet ist. Das Schleifmittel kann somit leicht an der Arbeitsfläche 28 des Kissenteils befestigt werden und bei Bedarf ausgewechselt werden.The grinding
Die Absaugkanäle 24 münden an der Seite der Grundplatte 14 in Absaugöffnungen 18, 20 aus.The
In
Hierbei können drei kreisabschnittförmige Zentrierstege 21, die sich um die Werkzeugaufnahme bzw. Befestigungsöffnungen 16 herum erstrecken, zur Zentrierung der Schleifplatte 10 an der Antriebswelle 30 dienen.Here, three circular-section-shaped centering
Die Herstellung einer derartigen Schleifplatte 10 wird im Folgenden anhand der
Zunächst wird die Grundplatte 14 bereitgestellt, die etwa aus Polyamid (PA) besteht. In der Grundplatte 14 sind die in
Dann wird das Luftführungsteil 22 bereitgestellt, dessen Form aus den
Die Luftführungskanäle 24 verlaufen in der Schleifplatte 10, um einen Versatz zwischen dem Lochkreisdurchmesser der Saugöffnungen 26 an der Arbeitsfläche 28 und dem Lochkreisdurchmesser der Absaugöffnungen 18, 20 an der Maschinenseite auszugleichen. Im vorliegenden Fall ist der Lochkreisdurchmesser der Absaugöffnungen 18, 20 kleiner als der Lochkreisdurchmesser der Saugöffnungen 26 an der Arbeitsfläche 28. Natürlich ist auch der umgekehrte Fall denkbar.The
Die so gebildete Einheit aus Luftführungsteil 22 und Grundplatte 14 wird anschließend in einer geeigneten Form mit einem Kunststoffschaum, z.B. auf Polyurethanbasis, umschäumt, um das Kissenteil 12 auszubilden. Dabei kann gleichzeitig das Klettverschlussmaterial für die Arbeitsfläche 28 mit angeformt werden.The thus formed unit of
Nach dem Schäumvorgang werden die Saugöffnungen 26 und die zentrale Ausnehmung 31 von der Arbeitsfläche 28 her durch eine geeignete Bearbeitung geöffnet, wobei gleichzeitig auch die Oberfläche des Luftführungsteils 22 an diesen Stellen durchtrennt wird, um den Zugang über die Saugöffnungen 26 zu den zwischen dem Luftführungsteil 22 und der Grundplatte 14 gebildeten Absaugkanälen 24 freizulegen.After the foaming process, the
Mit der vorstehenden Beschreibung wurde eine dreieckförmige Schleifplatte 10 mit nach außen konvex gerundeten Seitenkanten beschrieben. Es versteht sich, dass mit dem vorstehend beschriebenen Verfahren beliebig geformte Schleifplatten hergestellt werden können, insbesondere auch kreisförmige oder anders geformte Schleifplatten.With the above description, a triangular-shaped
Ferner können die erfindungsgemäßen Schleifplatten mit beliebigen Antrieben verwendet werden. Zwar ist eine Verwendung in Verbindung mit einem Oszillationsantrieb bekannter Bauart, bei der die Antriebswelle mit hoher Frequenz von z.B. 5000 bis 25.000 Schwingungen pro Minute und kleinem Verschwenkwinkel im Bereich von etwa 0,5 und 7° verschwenkt wird, besonders bevorzugt. Jedoch ist auch eine Verwendung mit einem rotierenden und/oder exzentrischen Antrieb denkbar.Furthermore, the abrasive plates according to the invention can be used with any drives. Although it is to be used in conjunction with a known type of oscillation drive in which the drive shaft is driven at a high frequency of e.g. 5000 to 25,000 oscillations per minute and a small pivoting angle in the range of about 0.5 and 7 ° is pivoted, particularly preferred. However, a use with a rotating and / or eccentric drive is conceivable.
Claims (13)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010012007A DE102010012007A1 (en) | 2010-03-15 | 2010-03-15 | sanding plate |
Publications (3)
Publication Number | Publication Date |
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EP2366498A2 true EP2366498A2 (en) | 2011-09-21 |
EP2366498A3 EP2366498A3 (en) | 2014-01-01 |
EP2366498B1 EP2366498B1 (en) | 2015-05-27 |
Family
ID=44121776
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11156704.6A Active EP2366498B1 (en) | 2010-03-15 | 2011-03-03 | Sanding plate |
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EP (1) | EP2366498B1 (en) |
DE (1) | DE102010012007A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202013010480U1 (en) | 2013-11-21 | 2014-11-13 | Kolthoff & Co. | sanding pad |
CN104227536A (en) * | 2013-06-24 | 2014-12-24 | C.&E.泛音有限公司 | Sanding plate for an oscillation drive |
EP2607018A3 (en) * | 2011-12-20 | 2015-12-16 | Kolthoff Gabrovo EOOD | Grinding disc |
CN105666292A (en) * | 2016-01-27 | 2016-06-15 | 安庆市凌康机电产品设计有限公司 | Edge polishing device for tool manufacturing |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020105572A1 (en) | 2020-03-02 | 2021-09-02 | Festool Gmbh | Sanding pad with a sealing element and a rib structure as well as a grinding machine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202009000880U1 (en) | 2009-01-23 | 2009-07-09 | Kolthoff & Co., Flüelen | sanding pad |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1938350A1 (en) * | 1969-07-29 | 1971-02-11 | Stoll Kg Kurt | Hand grinder |
CA1027761A (en) * | 1975-11-26 | 1978-03-14 | Miksa Marton | Vacuum sander |
ITMI20010134U1 (en) * | 2001-03-12 | 2002-09-12 | Valentini Guido | SUBSTANTIALLY CIRCULAR OPERATING PLATE FOR PORTABLE TOOL |
ITMI20031745A1 (en) * | 2003-09-11 | 2005-03-12 | Guido Valentini | PAD WITH DEFLECTOR FOR SURFACE MACHINING. |
-
2010
- 2010-03-15 DE DE102010012007A patent/DE102010012007A1/en not_active Withdrawn
-
2011
- 2011-03-03 EP EP11156704.6A patent/EP2366498B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202009000880U1 (en) | 2009-01-23 | 2009-07-09 | Kolthoff & Co., Flüelen | sanding pad |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2607018A3 (en) * | 2011-12-20 | 2015-12-16 | Kolthoff Gabrovo EOOD | Grinding disc |
CN104227536A (en) * | 2013-06-24 | 2014-12-24 | C.&E.泛音有限公司 | Sanding plate for an oscillation drive |
EP2818279A3 (en) * | 2013-06-24 | 2015-02-11 | C. & E. Fein GmbH | Sanding plate for an oscillation drive |
CN104227536B (en) * | 2013-06-24 | 2019-09-27 | C.& E.泛音有限公司 | Grinding disc for oscillation drive |
DE202013010480U1 (en) | 2013-11-21 | 2014-11-13 | Kolthoff & Co. | sanding pad |
EP2875900A1 (en) | 2013-11-21 | 2015-05-27 | Kolthoff & Co. | Grinding plate |
US9597776B2 (en) | 2013-11-21 | 2017-03-21 | Kolthoff Gabrovo Eood | Grinding disk |
CN105666292A (en) * | 2016-01-27 | 2016-06-15 | 安庆市凌康机电产品设计有限公司 | Edge polishing device for tool manufacturing |
Also Published As
Publication number | Publication date |
---|---|
EP2366498A3 (en) | 2014-01-01 |
EP2366498B1 (en) | 2015-05-27 |
DE102010012007A1 (en) | 2011-09-15 |
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