EP1360032A1 - Machine-outil portative de meulage, polissage ou analogue - Google Patents

Machine-outil portative de meulage, polissage ou analogue

Info

Publication number
EP1360032A1
EP1360032A1 EP01989379A EP01989379A EP1360032A1 EP 1360032 A1 EP1360032 A1 EP 1360032A1 EP 01989379 A EP01989379 A EP 01989379A EP 01989379 A EP01989379 A EP 01989379A EP 1360032 A1 EP1360032 A1 EP 1360032A1
Authority
EP
European Patent Office
Prior art keywords
gear
hand tool
tool according
grinding plate
movement
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
EP01989379A
Other languages
German (de)
English (en)
Other versions
EP1360032B1 (fr
Inventor
Steffen Wuensch
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1360032A1 publication Critical patent/EP1360032A1/fr
Application granted granted Critical
Publication of EP1360032B1 publication Critical patent/EP1360032B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B24B23/04—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
    • 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/03—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement

Definitions

  • the invention relates to a hand tool for grinding, polishing or the like according to the preamble of claim 1.
  • a hand-held power tool of the type mentioned in the introduction in such a way that both a grinding plate movement of an orbital sander and a grinding plate movement of an eccentric grinder can be realized with it.
  • the grinding plate movement of an orbital sander is characterized by an orbital or eccentric movement and the grinding plate movement of an eccentric grinder is characterized by an orbital and a rotating movement.
  • a hand-held machine tool that can be used both as an orbital sander and as an orbital sander is a so-called multi-sander.
  • the choice of the respective grinding plate movement type is made by attaching an appropriately designed grinding plate.
  • the invention relates to a handheld power tool for grinding, polishing or the like, with a drive motor, a gear coupled to the drive motor and a grinding plate operatively connected to the gear.
  • the transmission have a switching device by means of which at least two types of grinding plate movement can be preselected.
  • a hand-held power tool of this type has the advantage that it is possible to adapt the machine to the type of movement of the grinding plate required in each case without assembly work, without changing the grinding plate.
  • the handheld power tool according to the invention therefore provides a high level of operating convenience and great flexibility with regard to the conditions of use.
  • orbital movement of the grinding plate takes place with at least one selectable type of movement.
  • an orbital sander is available to the user in at least one preselectable operating mode.
  • the grinding plate can be rotated. The rotation can be triggered either by the orbital movement of the grinding plate or, if the grinding plate is in a freewheel with respect to a rotation, by the machining of a surface. With a respect located the rotation freewheel a particularly high quality can be treated by means of the tool surface can be achieved, because the freewheeling resulting in that the grinding plate can yield if appropriate rotatingly on resistance "to a gentle surface treatment.
  • the sanding plate is subjected to a so-called forced drive. This is usually done in such a way that an additional self-rotation is forced on the grinding plate via an armature shaft of the drive motor and an eccentric sleeve connected to it.
  • the switching device cooperates two intermeshing gears, one of which is connected to the grinding plate.
  • the hand tool according to the invention can be designed so that the rotation of at least one of the gears can be prevented by means of the switching device. In this way, the rotational behavior of the two gear wheels and the relative movement of these gears can be influenced in an advantageous manner and the type of grinding plate movement can thus be set.
  • a structurally particularly simple and space-saving embodiment of the hand tool according to the invention is present when the first gear connected to the grinding plate has external teeth which mesh with internal teeth of the second gear.
  • the first gear is then designed as a so-called planet gear and the second gear is designed as a so-called ring gear.
  • a gear ratio can be set by appropriate selection of the gear wheels, which advantageously permits a high vibration frequency of the grinding plate with a simultaneously low grinding plate speed.
  • the gearwheel with the internal toothing is expediently arranged in a slide bearing ring.
  • this represents a space-saving storage of this gear and on the other hand has the advantage that only slight frictional forces have to be overcome when this gear rotates.
  • the gear wheel with the internal toothing is arranged in a roller bearing.
  • a structurally particularly simple embodiment of the handheld power tool according to the invention is present when the switching device comprises at least one locking bolt which interacts with at least one recess in the first or the second gear. Such a locking bolt can prevent the respective gear wheel from rotating in a simple manner.
  • the planet gear is in free-wheeling.
  • the one with the planet wheel-connected grinding disc can also rotate freely.
  • the switching device preferably comprises two locking bolts, namely a first locking bolt for engaging in a recess of the first gear and a second locking bolt for engaging in a recess of the second gear.
  • the switching device for moving the at least one locking bolt comprises one
  • the switching ring is' the actuation device for the at least one locking bolt.
  • the switching ring is for example stored in a preferably two-part housing of the transmission and in the circumferential direction operable.
  • the switching ring preferably has at least one axial, circular arc-shaped recess in which a locking bolt is guided. If the switching device has two locking bolts, the switching ring preferably has two recesses, into each of which a locking bolt is guided.
  • the switching ring advantageously has a ramp-like slope in the region of the at least one axial, circular-arc-shaped recess, by means of which the at least one locking bolt can be axially displaced by rotating the switching ring.
  • the at least one locking bolt In order to hold the at least one locking bolt in position, it is preferably loaded in the axial direction by means of a spring.
  • a particularly simple embodiment of such a spring is present in the case of a spring plate which engages in a recess or a slot in the locking bolt and axially loads it.
  • the switching ring can be manually operated so that it can be brought into the desired switching position by simple manual displacement, or it can also be operated with a control and / or regulating unit via an actuator.
  • the grinding plate preferably has a floor plan which has at least one straight boundary edge and at least one arcuate boundary edge.
  • FIG. '4 is a perspective view of a
  • Fig. 5 is a schematic exploded view of the
  • FIG. 4 with two intermeshing gears and FIG. 6 a manual actuation device of the switching device shown in FIGS. 4 and 5 in a side view. 1 to 3, a hand grinder 10 is shown.
  • the hand grinder 10 comprises an electric motor (not visible here), which is arranged in a device housing 12 and drives an armature shaft 14.
  • the armature shaft 14 engages in a rotational test in an eccentrically arranged recess 16 of a so-called eccentric sleeve 18.
  • the eccentric sleeve 18 has a centrally arranged bore 20 into which a screw 22 engages, which serves to fasten a first gear wheel 24.
  • the first gear wheel 24 is rotatably fastened on the eccentric sleeve 18 via a ball bearing 26 and connected in a rotationally fixed manner to a grinding plate 28.
  • the grinding plate 28 can have different embodiments depending on the application. 1 and 2, a grinding plate for eccentric grinding operation is shown. On the other hand, a grinding plate 28 for oscillating grinding operation is shown in FIG. 3. However, an appropriately suitable sanding plate can also be used for all preselectable operating modes.
  • the grinding plate 28 is mounted eccentrically with respect to the armature shaft 14.
  • the axis ' of the grinding plate 28 therefore always performs an eccentric movement, a so-called orbital movement, around the axis of the armature shaft during operation.
  • the grinding machine 10 has a switching device 30, by means of which different types of movement of the grinding lers 28 are preselectable and which is shown in FIGS. 4 to 6 in enlarged representations.
  • the switching device 30 has a two-part housing 32, which is connected to the device housing 12 or forms a structural unit with it, and among other things the first gear
  • a slide bearing ring 36 is received in an annular groove 34 of the housing 32 and serves as a bearing for a second gear 38 arranged concentrically with respect to the slide bearing ring 36 and having internal teeth not shown in the drawing.
  • the second gear 38 which is thus designed as a so-called ring gear, meshes with the first gear 24, which has external teeth, also not shown in the drawing, and represents a so-called planet gear.
  • the meshing region of the two gear wheels 24 and 38 shown in the drawing is provided with the reference number 40.
  • the second gearwheel 38 is further provided with axial bores 42 which are arranged regularly in the circumferential direction and which are formed like blind holes (FIGS. 4 to 5).
  • the gearwheel 24 with the external toothing is also provided with axial bores 44 arranged regularly in the circumferential direction. However, these are designed as through holes.
  • the switching device 30 has a so-called switching ring 46 / which is guided in the housing 32 so as to be displaceable in the circumferential direction.
  • the switching ring 46 has an actuating handle 48 which extends through a radial slot 50 of the housing 32 - and is arranged in the radial slot 50 so as to be displaceable in the circumferential direction of the housing 32.
  • the switching ring 46 is arranged eccentrically with respect to the housing 32 and serves to preselect different types of movement of the grinding plate 28.
  • the switching ring 46 has two arcuate recesses 52 and 54 which penetrate the switching ring 46 axially.
  • two ramp-shaped bevels 56 and 58 are formed on the upper side of the switching ring, which connect an upper switching plane 60 to a lower switching plane 62 ,
  • a locking bolt 64 and 66, respectively, extending in the axial direction is guided in the recesses 52 and 54.
  • the locking bolt 64 which is slightly longer than the locking bolt 66, serves to engage in one of the bores 42 of the second gear 38.
  • the locking bolt 66 serves to engage in one of the bores 44 of the first gear 24.
  • the locking bolts 64 and 66 each have a head 76 or 78, which rests on the upper side of the switching ring 46, in particular depending on the position of the switching ring 46 either on the upper switching level 60 or on the lower switching level 62.
  • the locking bolts 64 and 66 are each loaded in the axial direction by a spring 68 or 70 designed as a spring plate in the direction of the engagement position in the bores 42 or 44.
  • the springs 68 and 70 engage in slots 72, 74 on the heads 76, 78 of the bolts 64, 66 and are clamped in the housing 32 with their ends facing away from the locking bolts.
  • the switching ring 46 is in a rotational position in which both
  • the head 76 of the locking bolt 64 and the head 78 of the locking bolt 66 lie on the upper switching level 60. This means that neither the second gear 38 nor the first gear 24 is secured against rotation, so that the first gear 24 is in free running with regard to its own rotation. In this switch position, the grinding plate 28 is subjected to an eccentric movement when the grinding machine 10 is in operation, the grinding plate 28 being able to rotate freely about its axis of rotation.
  • the head 76 of the locking bolt 64 rests on the upper switching level 60 and the head 78 of the locking bolt 66 rests on the lower switching level 62 of the switching ring 46.
  • the locking bolt 66 thus engages in a bore 44 in the first gear 24, as a result of which the latter is secured against rotation.
  • the diameter the locking bolt 66 is smaller than that of the bores 44, so that the eccentric movements of the first gear wheel 24 around the armature shaft 14 can be compensated for when the grinding machine is in operation.
  • the grinding plate 28 is subjected to an oscillating grinding movement or a pure eccentric movement when the grinding machine 10 is operating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne une machine-outil portative de meulage, polissage ou analogue, comprenant un moteur d'entraînement, une transmission couplée au moteur d'entraînement et un disque de meulage (28) fonctionnellement lié à la transmission (28). Selon l'invention, la transmission comprend un dispositif de commutation (30) permettant de sélectionner au moins deux types de mouvement du disque de meulage.
EP01989379A 2001-02-03 2001-12-06 Machine-outil portative de meulage, polissage ou analogue Expired - Lifetime EP1360032B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10104993 2001-02-03
DE10104993A DE10104993A1 (de) 2001-02-03 2001-02-03 Handwerkzeugmaschine zum Schleifen, Polieren oder dergleichen
PCT/DE2001/004607 WO2002062526A1 (fr) 2001-02-03 2001-12-06 Machine-outil portative de meulage, polissage ou analogue

Publications (2)

Publication Number Publication Date
EP1360032A1 true EP1360032A1 (fr) 2003-11-12
EP1360032B1 EP1360032B1 (fr) 2008-02-20

Family

ID=7672804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01989379A Expired - Lifetime EP1360032B1 (fr) 2001-02-03 2001-12-06 Machine-outil portative de meulage, polissage ou analogue

Country Status (6)

Country Link
US (1) US6749493B2 (fr)
EP (1) EP1360032B1 (fr)
JP (1) JP4532072B2 (fr)
CN (1) CN100457393C (fr)
DE (2) DE10104993A1 (fr)
WO (1) WO2002062526A1 (fr)

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DE502004003817D1 (de) * 2003-04-09 2007-06-28 Guenther Boehler Gmbh Vorrichtung zur Bearbeitung von Oberflächen
DE102004055270A1 (de) * 2004-11-17 2006-05-18 Robert Bosch Gmbh Führungsvorrichtung
CN1724216A (zh) * 2005-07-21 2006-01-25 苏州宝时得电动工具有限公司 多功能砂光机
US20090209182A1 (en) * 2006-09-05 2009-08-20 Dynabrade, Inc. Locking random orbital dual-action head assembly
US7713110B2 (en) * 2006-09-05 2010-05-11 Dynabrade, Inc. Locking random orbital dual-action head assembly
US20100151775A1 (en) * 2006-09-05 2010-06-17 Dynabrade, Inc. Locking random orbital dual-action head assembly with centering
DE102007018466A1 (de) 2007-04-19 2008-10-23 Robert Bosch Gmbh Motorisch angetriebene Werkzeugmaschine
CN100526012C (zh) * 2007-09-30 2009-08-12 苏州协成模具科技有限公司 一种研磨抛光机
CN100553878C (zh) * 2007-09-30 2009-10-28 苏州协成模具科技有限公司 研磨抛光机
DE102008004638A1 (de) 2008-01-16 2009-07-23 Robert Bosch Gmbh Motorisch angetriebene Werkzeugmaschine
US8172642B2 (en) 2008-08-20 2012-05-08 Black & Decker Inc. Multi-sander
US8328599B2 (en) * 2009-10-05 2012-12-11 Tai-Her Yang Internal rotation type direct motor-drive portable angle grinder
USD623034S1 (en) 2009-12-18 2010-09-07 Techtronic Power Tools Technology Limited Tool arbor
USD619152S1 (en) 2009-12-18 2010-07-06 Techtronic Power Tools Technology Limited Adapter
DE102010012025B4 (de) * 2010-03-19 2022-02-03 Festool Gmbh Hand-Werkzeugmaschine mit einem Drehwinkel-Führungsmittel aufweisenden Exzentergetriebe
DE102010012022A1 (de) * 2010-03-19 2011-09-22 Festool Gmbh Hand-Werkzeugmaschine mit einem Handgriff
DE102010012024B4 (de) * 2010-03-19 2015-05-28 Festool Gmbh Handwerkzeugmaschine mit einem Zwangsrotation-Exzentergetriebe
DE102010012021B3 (de) * 2010-03-19 2011-09-22 Festool Gmbh Hand-Werkzeugmaschine mit einem Exzentergetriebe und einer Sperre
USD651062S1 (en) 2010-09-29 2011-12-27 Milwaukee Electric Tool Corporation Tool interface for an accessory
USD646542S1 (en) 2010-09-29 2011-10-11 Milwaukee Electric Tool Corporation Accessory interface for a tool
USD653523S1 (en) 2010-09-29 2012-02-07 Milwaukee Electric Tool Corporation Adapter for a tool
US9421682B2 (en) 2011-07-18 2016-08-23 Black & Decker Inc. Multi-head power tool with reverse lock-out capability
US9555554B2 (en) 2013-05-06 2017-01-31 Milwaukee Electric Tool Corporation Oscillating multi-tool system
US9956677B2 (en) 2013-05-08 2018-05-01 Black & Decker Inc. Power tool with interchangeable power heads
CN107791130B (zh) * 2016-09-07 2023-12-08 苏州宝时得电动工具有限公司 多功能砂光机
US10603760B2 (en) 2017-09-19 2020-03-31 Campbell Hausfeld, Llc Multifunction rotary tool including hub
US10414014B2 (en) 2017-09-19 2019-09-17 Campbell Hausfeld, Llc Multifunction rotary tool including driveshaft

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Also Published As

Publication number Publication date
CN100457393C (zh) 2009-02-04
DE10104993A1 (de) 2002-08-22
DE50113644D1 (de) 2008-04-03
JP2004517747A (ja) 2004-06-17
CN1422199A (zh) 2003-06-04
JP4532072B2 (ja) 2010-08-25
WO2002062526A1 (fr) 2002-08-15
US20030109207A1 (en) 2003-06-12
US6749493B2 (en) 2004-06-15
EP1360032B1 (fr) 2008-02-20

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