EP2052813A1 - Polisseuse et plateau de meule pour une polisseuse - Google Patents

Polisseuse et plateau de meule pour une polisseuse Download PDF

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Publication number
EP2052813A1
EP2052813A1 EP09000740A EP09000740A EP2052813A1 EP 2052813 A1 EP2052813 A1 EP 2052813A1 EP 09000740 A EP09000740 A EP 09000740A EP 09000740 A EP09000740 A EP 09000740A EP 2052813 A1 EP2052813 A1 EP 2052813A1
Authority
EP
European Patent Office
Prior art keywords
sanding
sanding pad
bayonet
plate
plug
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
Application number
EP09000740A
Other languages
German (de)
English (en)
Other versions
EP2052813B1 (fr
Inventor
Christian Kneip
Torsten Reuss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Festool Group and Co KG
Original Assignee
Festool 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 Festool GmbH filed Critical Festool GmbH
Publication of EP2052813A1 publication Critical patent/EP2052813A1/fr
Application granted granted Critical
Publication of EP2052813B1 publication Critical patent/EP2052813B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • 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
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools

Definitions

  • the invention relates to a disc sander, in particular Exzentertellerschleifer, with a motor-driven rotating and / or orbital movement during holding holding device for releasably securing a sanding plate.
  • the invention further relates to a sanding pad for such a disc sander.
  • Disc grinders are hand-guided devices and are used for grinding workpieces. Depending on the grinding work to be performed or in the event of wear, a sanding disk change may be required. This removal and attachment of the sanding plate should be possible without tools and without any special difficulties for the user.
  • the invention is based on the object of making the assembly and disassembly of the sanding pad as simple as possible and tool-free.
  • the sanding plate should rotate as plan as possible.
  • This object is achieved in that the sanding pad by means of a plug / rotary connection device in the manner of a bayonet connection is detachably fastened to the holding device.
  • Bayonet joints generally have a relatively large diameter. Accordingly, in the present case, the diameter can be made large, which favors the flat circulation of the grinding plate.
  • the sanding pad according to the invention is characterized in that it has a substantially circular plug-in recess for immersing the retaining part, which end of its upper side opposite the workpiece to be sanded during use.
  • the plug recess containing consisting of rigid material upper part of the grinding plate can be kept relatively flat, so that an attached to the upper part sanding pad lower part made of elastically deformable plastic material can be made correspondingly thicker.
  • Sanding pads usually have an elastic lower part, on the underside of which the abrasive machining abrasive is applied. In this case, the elastic lower part provides a good nestling of the abrasive to the workpiece, even if it is uneven.
  • a disc sander 1 In the hand grinder resulting from the drawing is a disc sander 1 and thereby an eccentric disc grinder having a machine head 2, to which a motor housing 3 connects, in which an unillustrated drive motor is housed.
  • the motor housing 3 is arranged and shaped so that it can serve as a handle. With the other hand you can hold the machine head 2 and hold down against a workpiece to be ground.
  • the machine head 2 contains a driven by the drive motor forth drive unit having a perpendicular to the motor shaft extending and driven via an unillustrated reversing gear from the motor shaft ago drive shaft, which is indicated by its axis line 4.
  • the drive shaft is operatively connected to an eccentric part 5 which is arranged with its axis line 6 eccentric to drive shaft axis line 4 and, depending on the user-set operating mode, revolves around the drive shaft axis line 4 and / or rotates about its eccentric part axis line 6. Further details are of no interest here. In the present context, it could also be a perform only a rotating movement disc grinder.
  • the eccentric 5 is fixedly connected to a coaxially arranged thereon holding device 7, which serves for releasably securing a sanding plate 8.
  • the holding device 7, a holding part 9, which is arranged in the axial extension of the eccentric 5 and fixedly connected thereto by an axially extending fastening screw 10.
  • the sanding pad 8 is detachably attached to the holding device 7 and thereby to its holding part 9 by means of a plug / rotary connection device 11 to be described in detail in the manner of a bayonet connection.
  • the sanding pad 8 has a circular shape. It is made of a sanding pad upper part 12 of rigid material, in particular plastic material, and a bottom attached to the upper part 12 sanding pad base 13 made of elastically deformable material, in particular foam plastic.
  • a sanding blade-like abrasive can be exchangeably secured, with which the grinding of the respective workpiece is performed.
  • the attachment of the abrasive can be done by means of a hook and loop fastener.
  • a Klettenhaftbelag 14 is disposed on the underside of the sanding pad base 13.
  • the abrasive not shown has a cooperating with the Velcro adhesive 14 Klettenhaftbelag.
  • the illustrated sanding pad 8 is traversed by Staubabsaugötechnisch 15, which emanate from the sanding pad bottom and through which the resulting dust during grinding can be sucked off in a manner not shown. This interests in the present case not further.
  • the plug / rotary connection device 11 includes on the holding part 9 circumferentially spaced apart arranged rear engagement projections 16 which project in the radial direction and each extend a distance in the circumferential direction.
  • the Schugreifvorsprüngen 16 is located in the axial direction of the sanding pad 8 away from an annular surface 17 of the holding device 7, so that each Deckgreifvorsprung 16 in the axial direction 6 on the one hand by the respective Schugreifvorsprung 16 and the other part of the annular surface 17 limited Ambiringnut 18 is formed.
  • bayonet projections 19 are arranged in the number of the Schugreifvorsprüngen 16, which are arranged distributed in the circumferential direction at a distance from each other, extend in the circumferential direction and protrude inwards in the radial direction.
  • the measured in the circumferential direction length of the bayonet projections 19 is smaller than the distance between the Schugreifvorsprüngen 16 of the holding part 9, so that the bayonet projections 19 are movable in a mounting rotational position of the grinding disc 8 between the Häifvorsprüngen 16 and in a mounting rotational position in the Generalringnuten 18th the holding device 7 are arranged and engage behind the Deutschengreifvorsprünge 16.
  • the sanding pad 8 is placed on the holding part 9 when it is mounted in the mounting rotational position in which theSchgreifvorsprünge 16 and the bayonet projections 19 are arranged so to speak on a gap to each other.
  • the bayonet projections 19 pass through the spaces between the Hintergreifvorsprüngen 16 and the Schugreifvorsprünge 16 through the spaces between the bayonet projections 19.
  • the bayonet projections 19 reach behind the Häifvorsprünge 16 so that a firm locking takes place. To remove the sanding pad 8 this is first rotated and then withdrawn in the axial direction.
  • Said annular surface 17, which limits the Operaringnuten 18 above, is arranged to be movable in the axial direction and spring-loaded to the Schugreifvorsprüngen 16 out.
  • the arrangement is such that the annular surface 17 is held at a removed grinding plate 8 by the spring force against a stop that the Operaringnuten 18 in the axial direction less wide than the bayonet projections 19 are thick.
  • Both the Hintergreifvorsprünge 16 and the bayonet projections 19 are arranged in a respective same, perpendicular to the axial direction plane of the holding part 9 and the sanding pad 8.
  • the bayonet projections are automatically clamped during rotation of the sanding pad 8 in its mounting rotational position, so that the sanding pad 8 holds securely on the holding part 9.
  • the annular surface 17 is formed by a relative to the holding part 9 axially movably mounted pressure ring 20.
  • the pressure ring 20 is placed on a cylindrical portion 21 of the holding part 9, which is arranged in the axial direction next to the Deutschengreifvorsprünge 16 supporting holding part section 22.
  • the spring force is applied by a plate spring 23 which has a conical shape and widens toward the pressure ring 20.
  • the plate spring 23 is supported radially inwardly against an annular shoulder 24 of the holding device 7 and radially outwardly against the pressure ring 20. It can be seen that when screwing the bayonet projections 19 into the partial ring grooves 18 when the pressure ring 20 is moved in the direction away from the rear engagement projections 16, the cone angle of the plate spring 23 is increased.
  • the Hintergreifvorsprünge 16 have, as from FIG. 4 it can be seen on its the respective partial annular groove 18 bounding inside a screwing the bayonet projections facilitating inclined surface 25, so that, so to speak, a funnel-like mouth for the engagement of the respective bayonet projection 19 results.
  • the adjoining the inclined surface 25 portion 26 of the inner side of the Schugreifvorsprünge runs flat, while in a direction transverse to the axial direction of the plane.
  • a total of three bayonet projections 19 are arranged on the sanding pad 8. Accordingly, the holding part 9 has three Deutschengreifvorsprünge 16.
  • substantially circular plug recess 27 is formed, with the sanding plate 8 is attached to the holding part 9 so that it dips into the plug recess 27.
  • the plug-in recess 27 is formed in the sanding pad upper part 12.
  • the plug-in recess 27 terminates within the grinding plate 8 on a bottom surface 28 formed by the sanding pad upper part 12.
  • the sanding plate 8 is supported in its fastened state all around against the holding device 7 and thereby against the annular surface 17 formed by the pressure ring 20.
  • the sanding pad 8 on its upper side an annular around the plug recess 27 around circumferential flat surface 29, whose plane is transverse to the axial direction.
  • the bayonet projections 19 protrude radially inwards from the inner circumference of the plug-in recess 27 and are arranged in the axial direction so that the upper side 30 of the bayonet projections 19 is formed by regions of the planar surface 29 which are drawn inwards.
  • the bayonet projections 19 are thus with their top 30th This results in the largest possible support of the sanding plate 8 on the flat surface 29 on the pressure ring 20. Furthermore, the bayonet projections 19 are located at the furthest possible location of the plug recess 27 so that they are accordingly little into the sanding pad must extend. This allows a relatively thin construction of the sanding pad upper part 12, so that the sanding pad lower part also below the plug recess 27 of the upper part 12 has a sufficient thickness for a good nestling against the workpiece.
  • the plug recess 27 must be so deep that the Hintergreifvorsprünge 16 of the holding part 9 can get behind the bayonet projections 19.
  • a circumferentially extending gap 31 for receiving the respective Häifvorsprungs 16 is formed on the circumference of the plug recess 27 in the axial direction between each bayonet projection 19 and the bottom surface 28.
  • Each of these gaps 31 terminates in the circumferential direction at one of its ends on a rotation stop 32.
  • the sanding plate 8 mounted on the holding part 9 is rotated such that the rear grip projections 16 pass through the open ends of the gaps 31 behind the bayonet projections 19.
  • the rotation stops 32 limit this rotation of the grinding plate 8, so that too much twisting is avoided. In principle, it would be sufficient if only such a rotation stop 32 was present in one of the gaps 31.
  • the rotational stops 32 like the bayonet projections 19, integrally formed on the sanding pad upper part 12. They form a conclusion of column 31.
  • the bayonet projections 19 have over their circumferentially extending length in the axial direction constant thickness.
  • the centering of the sanding plate 8 on the holding part 9 takes place by the centering of the bayonet projections 19 on the circumference of the holding part 9.
  • the bottom of the bayonet projections 19 receiving Operaringnuten 18 is formed by the grinding disc 8 centering peripheral surface of the holding part 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP09000740A 2005-12-12 2006-11-16 Polisseuse et plateau de meule pour une polisseuse Active EP2052813B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510060514 DE102005060514A1 (de) 2005-12-12 2005-12-12 Tellerschleifer sowie Schleifteller für einen Tellerschleifer
EP06023804A EP1795301B1 (fr) 2005-12-12 2006-11-16 Disque de ponçage avec dispositif de fermeture et de blocage rapide et ponceuse à disque avec une telle disque

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP06023804A Division EP1795301B1 (fr) 2005-12-12 2006-11-16 Disque de ponçage avec dispositif de fermeture et de blocage rapide et ponceuse à disque avec une telle disque
EP06023804.5 Division 2006-11-16

Publications (2)

Publication Number Publication Date
EP2052813A1 true EP2052813A1 (fr) 2009-04-29
EP2052813B1 EP2052813B1 (fr) 2012-05-16

Family

ID=37866281

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06023804A Active EP1795301B1 (fr) 2005-12-12 2006-11-16 Disque de ponçage avec dispositif de fermeture et de blocage rapide et ponceuse à disque avec une telle disque
EP09000740A Active EP2052813B1 (fr) 2005-12-12 2006-11-16 Polisseuse et plateau de meule pour une polisseuse

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06023804A Active EP1795301B1 (fr) 2005-12-12 2006-11-16 Disque de ponçage avec dispositif de fermeture et de blocage rapide et ponceuse à disque avec une telle disque

Country Status (2)

Country Link
EP (2) EP1795301B1 (fr)
DE (2) DE102005060514A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4063069A1 (fr) 2021-03-23 2022-09-28 Andrea Valentini Tampon de support en forme de plaque adapté pour une fixation amovible à un outil de polissage ou de sablage à main

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007014470U1 (de) * 2007-10-16 2008-02-07 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co. Kg Schleifrad für eine spanabhebende Bearbeitung von Gegenständen, insbesondere von Steinen, Ziegeln o.dgl., oder Radkörper oder Schleifring oder Verschluss-Stück für ein solches Schleifrad
DE202010010653U1 (de) 2010-07-26 2011-11-15 Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co. Kg Maschine mit Werkzeug-Schnellwechselsystem
CN102814793B (zh) * 2011-06-09 2015-08-19 苏州宝时得电动工具有限公司 动力工具及应用于该动力工具的工作头和转接器
CN102814790A (zh) * 2011-06-09 2012-12-12 苏州宝时得电动工具有限公司 动力工具及应用于该动力工具的工作头和转接器
CN104070506A (zh) * 2013-03-27 2014-10-01 苏州宝时得电动工具有限公司 多功能机
NL2016421B1 (nl) 2016-03-11 2017-10-02 Blastrac B V Dubbelzijdige schuurschijf met snelwisselsysteem.
ITUA20161640A1 (it) * 2016-03-14 2017-09-14 Costa Levigatrici Spa Platorello e portaplatorello ad aggancio rapido
DK178917B1 (da) * 2016-05-31 2017-05-22 Kadicma Aps Bajonetkobling samt bearbejdningsenhed med sådan bajonetkobling
EP3727745B1 (fr) * 2017-12-20 2023-08-23 Fabrica Machinale S.r.l. Procédé et appareil permettant de réaliser le remplacement d'un élément abrasif dans une machine permettant d'usiner des surfaces
DE102018106347A1 (de) * 2018-03-19 2019-09-19 Boeck Gmbh Verbindungsvorrichtung
FR3126193B1 (fr) 2021-08-20 2023-08-11 Gilbert Constructions Mec ensemble pour le montage et démontage d’un outil tournant à une broche d’entraînement en rotation d’une machine-outil
CN114274044B (zh) * 2021-12-31 2023-12-26 厦门创云精智机械设备股份有限公司 一种磨轮及使用该磨轮的台式磨床
CN115781516B (zh) * 2023-02-07 2023-04-25 强信机械科技(莱州)有限公司 五轴数控磨削设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2250609A1 (en) * 1973-11-14 1975-06-06 Lazzari Giosue Chuck for marble polishing grindstone - has one part fixed to mandrel and sliding rotational part gripping grindstone
WO2001076822A1 (fr) 2000-04-07 2001-10-18 Robert Bosch Gmbh Support d'outil de meuleuse
DE20205495U1 (de) 2001-06-21 2002-08-01 Bruno Schmitz Schleifmittelwer Befestigungseinrichtung, Spannsystem und zugeordnetes Werkzeug
EP1559509A1 (fr) 2004-01-10 2005-08-03 Festool GmbH Dispositif de fixation d'un outil de meulage à une machine-outil

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10017457A1 (de) * 2000-04-07 2001-10-11 Bosch Gmbh Robert Schleifmaschinenwerkzeugaufnahme
DE10030586A1 (de) * 2000-06-21 2002-01-10 Bruno Schmitz Schleifmittelwer Werkzeug
DE10131326A1 (de) * 2001-06-28 2003-01-16 Bosch Gmbh Robert Einsatzwerkzeug für Schleifmaschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2250609A1 (en) * 1973-11-14 1975-06-06 Lazzari Giosue Chuck for marble polishing grindstone - has one part fixed to mandrel and sliding rotational part gripping grindstone
WO2001076822A1 (fr) 2000-04-07 2001-10-18 Robert Bosch Gmbh Support d'outil de meuleuse
DE20205495U1 (de) 2001-06-21 2002-08-01 Bruno Schmitz Schleifmittelwer Befestigungseinrichtung, Spannsystem und zugeordnetes Werkzeug
EP1559509A1 (fr) 2004-01-10 2005-08-03 Festool GmbH Dispositif de fixation d'un outil de meulage à une machine-outil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4063069A1 (fr) 2021-03-23 2022-09-28 Andrea Valentini Tampon de support en forme de plaque adapté pour une fixation amovible à un outil de polissage ou de sablage à main

Also Published As

Publication number Publication date
DE502006003079D1 (de) 2009-04-23
DE102005060514A1 (de) 2007-06-14
EP1795301B1 (fr) 2009-03-11
EP2052813B1 (fr) 2012-05-16
EP1795301A1 (fr) 2007-06-13

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