WO2008014807A1 - Outil de polissage - Google Patents

Outil de polissage Download PDF

Info

Publication number
WO2008014807A1
WO2008014807A1 PCT/EP2006/007641 EP2006007641W WO2008014807A1 WO 2008014807 A1 WO2008014807 A1 WO 2008014807A1 EP 2006007641 W EP2006007641 W EP 2006007641W WO 2008014807 A1 WO2008014807 A1 WO 2008014807A1
Authority
WO
WIPO (PCT)
Prior art keywords
polishing
thread
tool according
plate
polishing plate
Prior art date
Application number
PCT/EP2006/007641
Other languages
German (de)
English (en)
Inventor
Roland Vögele
Original Assignee
A & M Electric Tools 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 A & M Electric Tools Gmbh filed Critical A & M Electric Tools Gmbh
Priority to PCT/EP2006/007641 priority Critical patent/WO2008014807A1/fr
Publication of WO2008014807A1 publication Critical patent/WO2008014807A1/fr

Links

Classifications

    • 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
    • B24B23/028—Angle tools
    • 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
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • 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
    • B24D13/20—Mountings for the wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings
    • 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

Definitions

  • the invention relates to a polishing tool having the features according to the preamble of claim 1.
  • polishing tools For polishing work on paint surfaces or the like.
  • Hand-held, motor-driven angle polishers are used with a mains or battery-powered electric motor that rotatably drive a polishing tool.
  • Such polishing tools have a polishing plate on whose outer flat side a polishing body is attached. With the addition of a polishing agent, the rotating polishing body is manually held to the surface to be polished, thereby causing a polishing.
  • the polishing plate and the polishing body are made in two parts.
  • the polishing plate as a reusable component is screwed onto the tool spindle of the angle polisher.
  • the polishing body is a wear part and replaceable fastened in particular by means of a hook and loop fastener on the outer flat side of the polishing plate.
  • the replacement or attachment of the polishing body is done manually by the user.
  • the attachment is made by eye, with adjusting eccentricities between the polishing body and the polishing plate.
  • the Velcro closure does not allow a position correction of the polishing body relative to the polishing plate.
  • the polishing body has a more or less non-circular running during operation. This results in various disadvantages that affect the polishing result unfavorable.
  • the polishing tool tends to bounce on the surface to be polished, whereby traces in the polishing result can be seen. If the peripheral surface of the polishing body is used, the outer edge of the comparatively hard polishing plate can touch the surface to be processed, which leads to paint damage. In addition, the production is complicated and expensive: polishing plate and polishing body must be provided or glued with one half of the hook and loop fastener. The Velcro half of the polishing article is disposed of with this after use and is not reusable. The opposite, arranged on the polishing plate Velcro half has a limited life, whereby the life of the polishing plate is limited.
  • a generic polishing tool in which the polishing plate has a smaller diameter than the polishing body. The risk of touching the plate edge with the surface to be processed is reduced.
  • a centering pin is provided, which engages in a central centering opening of the polishing body. This is intended to facilitate a coaxial alignment of the position of the polishing body relative to the polishing plate in the attachment by means of the hook and loop fastener.
  • the polishing pad made of soft foam is so elastic that the centering of the engaging centering pin is only insufficient.
  • the construction is complex and expensive.
  • the invention has the object of providing a generic polishing tool in such a way that with a simple structure, an improved polishing result can be achieved.
  • the polishing body is glued mechanically and coaxially to the polishing plate on the polishing plate.
  • the result is a permanent connection between two components with high concentricity.
  • the number of parts is low.
  • only a very simple geometric design is required, which leads to low overall manufacturing costs.
  • the polishing tool is replaced as a whole and replaced by a similar polishing tool. Taking into account the low production costs, this is an economical solution that ensures a high concentricity and thus a first-class polishing result.
  • the polishing plate is substantially circular disk-shaped and the polishing body is substantially cylindrical, wherein the diameter of the polishing body is greater than the diameter of the polishing plate.
  • the diameter of the polishing body is advantageously at least 20 mm and in particular 20 mm to 40 mm larger than the diameter of the polishing plate. Due to the high concentricity of the arrangement according to the invention can be easily worked with the peripheral side surface of the cylindrical polishing body. You avoids larger outer diameter compared to the polishing plate a touch of the polishing plate with the surface to be processed. The risk of paint or surface damage or trace formation is reduced.
  • the polishing body consists of a polyester foam. Its elastic properties can be adjusted so that high point loads are avoided during polishing. Its damping properties contribute in conjunction with the high concentricity to the fact that the risk of hopping during polishing is reduced.
  • the polishing plate is preferably made of a resilient plastic.
  • a radially outer attachment section of the polishing plate is connected by means of elastically yielding spokes to a radially inner hub section of the polishing plate.
  • the substantially radially extending spokes are resilient in the axial direction and avoid excessive axial contact pressure of the polishing pad against the surface to be machined. At the same time they act in particular in the axial direction as a vibration damper, whereby the inclination of the polishing tool is reduced for hopping.
  • the radially outer attachment portion, the elastically resilient spokes and the radially inner hub portion are preferably made in one piece to form the polishing plate.
  • good flexibility and damping properties result from the formation of the same material, in particular when selecting a suitable tough plastic.
  • the spokes have an axial distance to the adjacent end face of the polishing body. The spokes expediently rise in an arc over the particular flat end face of the polishing body. The spokes are free to deform in the axial direction without contact with the adjacent end face of the polishing body. The bow shape also results in some radial compliance and damping.
  • the elastic compliance and the vibration damping behavior can be adjusted precisely and reproducibly.
  • an adapter in the hub portion of the polishing plate, is held in particular made of plastic for attachment to a tool spindle of the angle polisher, wherein the adapter is fixed by means of at least two-course, in particular three-thread or by means of a bayonet lock in the hub portion of the polishing plate.
  • the adapter can be screwed onto the tool spindle as a single part or together with the polishing tool.
  • the adapter remains on the tool spindle, whereby the polishing tool can be easily replaced purely manually and without further aids.
  • the two- or multi-start execution of the threaded connection between the adapter and the polishing plate is opposite a catchy thread on the tool spindle, wherein advantageously the internal thread of the adapter for screwing with the tool spindle has a smaller pitch angle than the multi-thread for screwing the adapter with the hub portion of polishing disc.
  • the consequent different thread pitches ensure that the manual release of the polishing tool of the adapter remains on the tool spindle and instead the multi-start thread is released.
  • the thread pitch of the multi-thread is expedient greater than the thread pitch of a corresponding catchy standard thread with the same diameter.
  • M36 thread 9 mm instead of 4 mm with a standard M36 standard thread and requires only a small amount of rotational movement to loosen or tighten the screw connection, which facilitates tool changes.
  • the thread for screwing the adapter to the hub portion of the polishing plate and in particular an external thread of this screw is advantageously coded.
  • the thread coding is carried out in such a way that exclusively polishing tools with a certain maximum diameter or with smaller diameters, but not with larger diameters, can be screwed onto a given adapter. An overload of the angle polisher or its drive motor by choosing a too large polishing tool is reduced.
  • Figure 1 is a perspective view of a hand-held angle polisher with a screwed, inventive polishing tool.
  • Fig. 2 is a longitudinal sectional view of the polishing tool according to Fig. 1 with details of the structure of the polishing plate and an adapter to be inserted therein.
  • FIG. 1 shows in a perspective view a hand-held angle polisher 2 with a motor housing 19 and a frontally attached thereto gear housing 20.
  • a non-illustrated electric drive motor is arranged, via a bevel gear in the gear housing 20 also not shown tool spindle eleventh drives.
  • the motor shaft of the electric drive motor is axially parallel to the longitudinal axis of the motor housing 19, while the axis of rotation of the tool spindle 11 is substantially perpendicular thereto.
  • a power cable 22 is led out of the rear end of the motor housing 19. Instead, a battery may be provided.
  • the motor housing 19 is designed substantially cylindrical and serves as a rear handle for the user.
  • a laterally projecting auxiliary handle 21 is arranged on the gear housing 20, which optionally allows the one-handed and ambidextrous operation of the angle polisher 2. It may also be appropriate to have a different design of the angle polisher 2, especially in a larger power class, in which the rear handle is not formed by the motor housing 19 itself, but at the rear end of the motor housing 19 in the region of the power cable 22 is arranged.
  • a polishing tool 1 On the tool spindle 11, a polishing tool 1 is arranged and rotatably connected thereto. During operation, the electric drive motor drives the tool spindle 11 and thus the polishing tool 1 in rotation via the angle gear in the gear housing 20.
  • the polishing tool 1 comprises a polishing plate 3 made of a resilient, viscoelastic or rubber-like plastic and a much softer and more compliant polishing body 5 in comparison.
  • the polishing body 5 consists in the embodiment shown of a polyester foam.
  • the polishing plate 3 is formed substantially circular disc-shaped and coaxially fixed to the tool spindle 11.
  • the polishing body 5 is substantially cylindrical with a peripheral peripheral surface 17 and two opposite end surfaces 9, 16 are formed. With his the polishing plate 3 facing end face 9 of the polishing body 5 is glued to a gear housing 20 facing away from the polishing body 5 or flat side 4 of the polishing plate 3.
  • the bonding between the polishing plate 3 and the polishing body 5 is machined in the factory in the manufacture that by means of a suitable device as exact as possible coaxial alignment of the polishing pad 5 is made to the polishing plate 3 and thus to the tool spindle 11.
  • a high concentricity of the cylindrical polishing body 5 is given with respect to the axis of rotation of the tool spindle 11.
  • the concentricity is preferably less than 2 mm in the radial direction, which results in a smaller parallel axial offset corresponds to 1 mm.
  • the rotary polishing tool 1 In operation with the engine turned on, the rotary polishing tool 1 is held against the surface to be machined.
  • the free, the polishing plate 3 facing away from face 16, the cylindrical peripheral surface 17 or in the transition region between the two lying circumferential, rounded in cross-section edge 18 can be used.
  • the arrangement can be used equally for polishing as well as for stone grinding with slowly rotating angle polishers.
  • the substantially circular disc-shaped polishing plate 3 comprises a radially outer mounting portion 6 in the form of a circular ring, on the flat side 4 of the polishing body 5 is fixed. From the mounting portion 6 a number of spokes 7, here five spokes I 1 extend radially inwardly to a hub portion 8 of the polishing plate 3. The radially outer mounting portion 6 is thus connected by means of the spokes 7 with the radially inner hub portion 8 of the polishing plate 3. The hub portion 8 is held on an adapter 10, which in turn is screwed onto a free end of the tool spindle 11.
  • the polishing plate 3 facing end face 9 of the solid polishing body 5 is consistently flat and flat with the adjacent, also flat flat side 4 of the fastener glued portion 6 glued.
  • An in-plane end face of the hub portion 8 can optionally rest loosely on the end face 9 or also be glued to this.
  • the intermediate spokes 7 rise in an arc over the flat end faces 9. Here, they start from the circumferential inner edge of the annular attachment portion 6 and extend radially inwardly, with their axial distance a to the end face 9 becomes larger with decreasing radius. Radially inwardly, the spokes 7 adjoin the hub portion 8 with a maximum axial distance a.
  • the mounting portion 6, the spokes 7 and the hub portion 8 are integrally injection molded from the same compliant plastic. In conjunction with the thin cross-sectional shape of the spokes 7, these are elastically yielding in the axial direction, in the radial direction and in the circumferential direction, so that they act as a spring and damping element between the hub portion 8 and the attachment portion 6.
  • the axial contact pressure of the polishing body 5 on the surface to be machined causes the axial compliance of the spokes 7 an axial vibration damping, which reduces the inclination of the polishing tool 1 for hopping on the surface to be machined or completely eliminated.
  • from the circumferentially elastic formation of the spokes 7 follows an effect as a torsional vibration damper. The same applies analogously to the radial direction.
  • an outer diameter D of the polishing body 5 is greater than an outer diameter d of the polishing plate 3.
  • Der Diameter D of the polishing body is at least 20 mm and advantageously 20 mm to 40 mm larger than the diameter d of the polishing plate 3. In polishing, in particular with the peripheral surface 17 of the polishing pad 5 is avoided that an outer peripheral edge 24 of the polishing pad 3 in contact with the working surface comes.
  • the hub portion 8 is provided centrally and coaxially with the polishing tool 1 with an internal thread 14.
  • the internal thread 14 can be provided for direct screwing onto an external thread of the tool spindle 11 (FIG. 1).
  • the adapter 10 is provided for this purpose, which is disassembled for the sake of clarity as an item is shown.
  • the adapter 10 carries an internal thread 15 for screwing onto the tool spindle 11 (FIG. 1), and is bolted to the hub portion 8 in the installed state by means of a thread 12. Instead of the thread 12, a bayonet closure may be appropriate.
  • the adapter 10 For mounting the adapter 10 on the tool spindle 11 (FIG. 1), this can be turned on either by hand together with the polishing tool 1 or as a single part, for example, with a wrench attached to the wrench surfaces 23 shown in FIG.
  • the adapter 10 is preferably made of plastic, with its internal thread 15 in particular has a smaller pitch angle compared to the multi-thread 12, so that the adapter 10 more firmly on the tool spindle 11 (Fig. 1) sits and only with a strong release torque from the tool spindle 11 (Fig. 1) can be unscrewed.
  • the thread 12 consists of an external thread 13 of the adapter 10 and the internal thread 14 of the hub portion 8. It is designed as at least two-start, in the embodiment shown dreissenes thread 12.
  • the thread pitch of the multi-start thread 12 is greater than the thread pitch of a corresponding catchy standard thread with the same diameter. For example, for an M36 thread shown here, it is 9 mm compared to 4 mm for a standard M36 thread. The same applies analogously in the case of an embodiment as an inch thread or in another standardized thread form.
  • the increased thread pitch angle following the multiple thread 12 following the internal thread 15 of the adapter 10 causes the thread 12 to be loosened when the polishing tool 1 is loosened, while the adapter 10 remains on the tool spindle 11 (FIG. 1).
  • the thread 12 is preferably executed encoded. With otherwise identical thread dimensions of the thread 12, its thread depth is selected as a function of the outside diameter D of the polishing body 5: Polishing tools 1 with a large, maximum outside diameter D each have a maximum thread depth at the external thread 13 and at the internal thread 14. Further polishing tools 1 are provided with decreasing outer diameter D with reduced thread depth of the thread 12.
  • a suitable adapter 10 with a thread coding matched to the performance class is used.
  • the Thread depth of the external thread 13 is adapted to the performance class. It can only be a polishing tool 1 with the same or lesser thread depth of the internal thread 14 to be screwed.
  • the outer diameter D of the polishing body 5 can be screwed only with a predetermined limit or smaller, but not with a larger outer diameter D. An overload of the electric drive motor of the angle polisher 2 (Fig. 1) is avoided.

Landscapes

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

Abstract

L'invention concerne un outil de polissage (1) pour un polissoir angulaire (2) motorisé guidé à la main. L'outil de polissage (1) comprend un disque à polir (3) pour l'entraînement rotatif et un corps de polissage (5) fixé sur un côté plat extérieur (4) du disque à polir (3). Le corps de polissage (5) est mécanisé et collé sur le disque à polir (3) de manière coaxiale par rapport au disque à polir (3).
PCT/EP2006/007641 2006-08-02 2006-08-02 Outil de polissage WO2008014807A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2006/007641 WO2008014807A1 (fr) 2006-08-02 2006-08-02 Outil de polissage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2006/007641 WO2008014807A1 (fr) 2006-08-02 2006-08-02 Outil de polissage

Publications (1)

Publication Number Publication Date
WO2008014807A1 true WO2008014807A1 (fr) 2008-02-07

Family

ID=37510736

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/007641 WO2008014807A1 (fr) 2006-08-02 2006-08-02 Outil de polissage

Country Status (1)

Country Link
WO (1) WO2008014807A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20110017A1 (it) * 2011-02-01 2012-08-02 Corcos S R L Dispositivo per la levigatura di superfici.
WO2015000922A1 (fr) * 2013-07-05 2015-01-08 Flex-Elektrowerkzeuge Gmbh Logement pour outil et meuleuse portative

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930740A1 (de) * 1979-07-28 1981-02-12 Fabritius Hans Josef Plan-schleifteller fuer hochtourige winkel- und druckluft-schleifmaschinen
US5123139A (en) * 1991-01-16 1992-06-23 Meguiar's, Inc. Buffing pad assembly
US5172448A (en) * 1991-03-26 1992-12-22 Waxing Corporation Of America Molded buffer pad
WO1998052717A1 (fr) * 1997-05-19 1998-11-26 Lake Country Manufacturing, Inc. Tampon de lustrage en mousse et procede de fabrication
US20020142712A1 (en) * 2001-03-30 2002-10-03 Kaiser Richard A. Back-up plate for double-sided buffing pad

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930740A1 (de) * 1979-07-28 1981-02-12 Fabritius Hans Josef Plan-schleifteller fuer hochtourige winkel- und druckluft-schleifmaschinen
US5123139A (en) * 1991-01-16 1992-06-23 Meguiar's, Inc. Buffing pad assembly
US5172448A (en) * 1991-03-26 1992-12-22 Waxing Corporation Of America Molded buffer pad
WO1998052717A1 (fr) * 1997-05-19 1998-11-26 Lake Country Manufacturing, Inc. Tampon de lustrage en mousse et procede de fabrication
US20020142712A1 (en) * 2001-03-30 2002-10-03 Kaiser Richard A. Back-up plate for double-sided buffing pad

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20110017A1 (it) * 2011-02-01 2012-08-02 Corcos S R L Dispositivo per la levigatura di superfici.
WO2015000922A1 (fr) * 2013-07-05 2015-01-08 Flex-Elektrowerkzeuge Gmbh Logement pour outil et meuleuse portative
US9718169B2 (en) 2013-07-05 2017-08-01 Flex-Elektrowerkzeuge Gmbh Tool holder and handheld abrading machine

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