EP1347860A1 - Machine-outil a main - Google Patents

Machine-outil a main

Info

Publication number
EP1347860A1
EP1347860A1 EP01995585A EP01995585A EP1347860A1 EP 1347860 A1 EP1347860 A1 EP 1347860A1 EP 01995585 A EP01995585 A EP 01995585A EP 01995585 A EP01995585 A EP 01995585A EP 1347860 A1 EP1347860 A1 EP 1347860A1
Authority
EP
European Patent Office
Prior art keywords
oscillating plate
plate
oscillating
housing
hand tool
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
EP01995585A
Other languages
German (de)
English (en)
Other versions
EP1347860B1 (fr
Inventor
Stephan Jonas
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 EP1347860A1 publication Critical patent/EP1347860A1/fr
Application granted granted Critical
Publication of EP1347860B1 publication Critical patent/EP1347860B1/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

Definitions

  • the invention is based on a hand tool for surface machining, according to the preamble of claim 1.
  • the housing consists of a cylindrical handle part that receives the electric motor, which is aligned parallel to the oscillating plate, and from an attached to the handle part as an angular head Composite gear head, which is driven by the electric motor
  • Eccentric gear accommodates.
  • the drive shaft of the eccentric gear which is aligned at right angles to the motor axis, is coupled to the output shaft of the electric motor via a flexible shaft.
  • the eccentric pin protrudes from the underside of the gear head and dips approximately in the middle of the
  • the one Relative rotation between the eccentric pin and the oscillating plate allows coupling of the eccentric pin and the oscillating plate by means of a radial bearing.
  • the triangular oscillating plate covers the underside of the gear head and protrudes forward over the gear head.
  • the triangular sanding disc is firmly connected to the oscillating plate, on which triangular sanding sheets can be placed using a Velcro fastener.
  • the hand tool according to the invention for grinding surface processing with the features of claim 1 has the advantage that by moving the coupling between the eccentric pin and the oscillating plate from the center out to close to one edge of the oscillating plate, which in the case of a triangular configuration of the oscillating plate from the triangular tip the oscillating plate is formed, the electric motor is placed above the oscillating plate with the motor axis aligned parallel to the oscillating plate, and a relatively flat housing with an extremely short overall length can thus be achieved, the contours of which largely remain in the region of the oscillating plate.
  • the flatness and short design of a kind of grip block housing also has the advantage that the user on the
  • Oscillating plate especially at its edges, improved in the area of the grinding plate facing away from the coupling point is forced by the transmission translator.
  • the transmission translator Despite the small height and length of the housing, it is not necessary to use special motors with extremely high clamping volume, but conventional standard electric motors can be used, which has a cost advantage.
  • the coupling point between the eccentric pin and the oscillating plate lies on the longitudinal central axis of the oscillating plate, un ⁇ the
  • Attack points of the vibrating elements on the vibrating plate are at the same transverse distance from the longitudinal central axis. Thanks to these constructive measures, the oscillating plate carries out oscillating movements of the same size on both sides of the longitudinal central axis.
  • the movement translator is designed as a torsionally soft web which is flexible only in the direction of the longitudinal central axis of the oscillating plate and is attached on the one hand symmetrically to the longitudinal plate on the end of the oscillating plate and on the other hand to the housing.
  • the web is rectangular in shape with two long and two narrow sides and arranged in such a way that the narrow sides extend parallel and at the same transverse distance to the longitudinal center axis of the oscillating plate.
  • the motion translator has two fastening elements which are arranged mirror-symmetrically and transversely to the longitudinal center axis of the oscillating plate and which are rigidly fastened at one end to the housing and at the other end immerse an elongated hole formed in the oscillating plate.
  • Each elongated hole extends with its larger hole axis parallel to the longitudinal central axis of the oscillating plate and has a smaller perforated axis which is slightly larger than the outer diameter of the section of the fastening element which plunges into the elongated hole, so that it is guided in the elongated hole parallel to the longitudinal central axis of the oscillating plate.
  • FIG. 1 is a perspective view of a Schwmgschleifers
  • FIG. 2 shows the same view as in FIG. 1 of the Schwmgschleifer cut along its longitudinal axis
  • 3 is a bottom view of the Schwmgschleifers m Fig. 1 and 2
  • FIG. 4 shows a section along the line IV-I ⁇ t ⁇ n in FIG. 3
  • FIG. 6 shows a schematic illustration of a side view of the orbital sander according to a second exemplary embodiment
  • Fig. 8 is the same representation as in Fig. 7 for
  • the Schwmgschleifer shown in perspective in Fig. 1 and 2 and m Fig. 3, 4 and 5 different views and sections as an exemplary embodiment of a general hand tool for surface machining, has a housing 10 which forms a grip block for handling the Schwmgschleifer, so that this Type of Schwmgschleifer is also referred to as an electrical grinding block.
  • a vibration plate 12 is suspended by means of two elastic elements 11, one of which can be seen in FIG. 2, on the underside of which a grinding plate 13 is fastened, which is designed to interchangeably accommodate grinding sheets.
  • the vibrating plate 12 and the grinding plate 13 have the same shape and have a front triangular section, which is designed like a so-called delta sander, and an adjoining, rectangular section.
  • this housing section 101 which can be closed on the underside with a hood-like cover 14, electrical connections and electrical components, such as power cable guide 15 and on / off switch 16, are accommodated.
  • Power cable guide 15 and on / off switch 16 are inserted through a corresponding wall opening m on the rear side of the housing section 101.
  • the vibrating plate 12 suspended elastically on the housing 10 is offset by an eccentric drive 17 m orbital oscillating movement.
  • the eccentric drive 17 has a drive shaft 18 which is rotatably mounted in the housing 10 at right angles to the oscillating plate 12.
  • the bearing is carried out by means of a radial bearing 19, and the drive shaft 18 is supported on its end facing away from the oscillating plate 12 to absorb axial forces on a ball 20 which is movably inserted in the housing 10.
  • an eccentric pin 21 is rotatably connected, which is parallel to Drive shaft 18 is arranged radially offset by an eccentricity.
  • the eccentric pin 21 is rotatably coupled to the oscillating plate 12, the coupling being carried out via a radial bearing 20, the inner bearing ring of which is seated on the eccentric pin 21 in a rotationally fixed manner, while the outer bearing ring lies non-rotatably in the oscillating plate 12.
  • the inner bearing ring is supported on a radial shoulder on the eccentric pin 21 and on a securing ring 42 resting on the end face of the eccentric pin 21, which is fixed with a fastening screw 23 which is guided through a bore 24 in the grinding plate 13 and screwed into an axial threaded hole in the eccentric pin 21 is.
  • the eccentric drive 17 also includes an electric motor 25, the output shaft 26 of which is aligned parallel to the oscillating plate 12 and drives the drive shaft 18 via an angular gear 27, which is designed here as a bevel gear.
  • Housing section 101 is connected to a power cable 28 which is passed through the power cable entry 15, with the on / off switch 16 being interposed.
  • the coupling point 30 formed by the radial bearing 22 is placed between the eccentric pin 21 and the oscillating plate 12 near the tip 121 of the oscillating plate 12 and the points of engagement 31 of the two elastic oscillating elements 11 are arranged on the oscillating plate 12 near the rear edge 121 of the oscillating plate 12.
  • the Coupling point 30 lies on the longitudinal central axis 29, while the points of engagement 31 of the two elastic oscillating elements 11 are arranged at the same transverse distance from the longitudinal central axis 29 of the oscillating plate 12.
  • a vibrating element 11 can be seen in FIG. 2 of the elastic vibrating elements 11 of the same design.
  • Attack points 31 of the two vibrating elements 11, the vibrating plate 12 is fixed to the housing 10 by means of a movement translator 32 which is flexible on one side.
  • the motion translator 32 is designed such that the orbital movement of the oscillating plate 12 generated at the coupling point 30 by the rotating eccentric pin 21 causes an opposing orbital movement in the points of application 31 of the elastic oscillating elements 11. 8 shows the orbital movements of the coupling point 30 and the attack points 31 symbolically for clarification. While the eccentric pin 21 rotates the coupling point 30 from position 1 clockwise via positions 2, 3 and 4, the engagement points 31 move counterclockwise from positions 1, 2 and 3 to position 4.
  • the motion translator 32 is realized in the embodiment of the vibratory grinder according to FIGS.
  • the smaller hole axes of the elongated holes 35 are dimensioned a little larger than the outer diameter of the part of the fastening elements 34 immersing the elongated hole 35, so that the fastening elements 34 are guided in the longitudinal holes 35 in the longitudinal direction.
  • each fastening element 34 consists of a cap screw 37, which is passed through a recess 36 in the grinding plate 11 and screwed into a threaded section in the housing 10, and of a guide sleeve 38 placed on the screw shaft, which with its lower sleeve section m the slot 35 dips.
  • the guide sleeve 38 carries two annular flanges 381, 382 arranged at an axial distance from one another, each of which overlaps one of the long edges of an unbalance plate 39 lying above the oscillating plate 12 at an axial distance and parallel to the oscillating plate 12, so that the unbalanced plate 39 between the ring flanges 381 and 382 of the two guide sleeves 38 is guided axially displaceably.
  • the unbalance plate 39 serves as a balancing weight for balancing the Schwmgschleifers and is with one of the drive shaft 18 opposite to the oscillating plate 12 driven eccentric plate 40 (Fig. 2 and 4) coupled so that it executes an opposite movement to the oscillating plate 12 swinging movement. In the area of the vibrating elements 11, the unbalance plate 39 is cut out (FIG. 2).
  • the vibrating plate 12 has a triangular shape with slightly convex curved side edges.
  • the electric motor 25, which is also arranged with its motor axis parallel to the oscillating plate 12, in turn drives the drive shaft 18 with eccentric pin 21 via the angular gear 27, which sets the oscillating plate 12 'in the region of the coupling point 30 in the orbital oscillating movement described.
  • the two oscillating elements 11, which in turn are mirror-symmetrically attached to the longitudinal central axis 29 of the oscillating plate 12 'on the oscillating plate 12' in the engagement points 31, are designed here as torsionally soft, flexible rods.
  • the motion translator 32 is formed by a torsionally soft web 41 which is flexible only in the direction of the longitudinal central axis 29 of the floating plate 12 f and is attached on the one hand to the floating plate 12 'symmetrically to its longitudinal central axis 29 and on the other hand to the housing 10'.
  • the web 41 is arranged centrally between the coupling point 30 and the points of attack 31. It has a rectangular cross section with two long and two narrow sides and is arranged so that the narrow Sides extend parallel to the longitudinal central axis 29 of the oscillating plate 12 '.
  • FIG. 8 shows how the orbital oscillating movement of the coupling point 30 between the eccentric pin 21 and the oscillating plate 12 'generated by the eccentric drive 17 causes opposing, likewise orbital oscillating movements of the points of attack 31 of the elastic oscillating elements 11 on the oscillating plate 12' by the web 41.
  • the respective positions of the coupling point 30, the engagement points 31 and the web 41 in the course of a circular path are marked with the positions 1, 2, 3 and 4.
  • the web 41 is deflected in the direction of the longitudinal central axis 29 of the oscillating plate 12 ', in positions 2 and 4 the central web is slightly rotated clockwise or counterclockwise.
  • the entire oscillating plate 12 'itself executes a circular movement except for the area on the web 41, which is important for good grinding results.

Landscapes

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

Abstract

Machine-outil à main pour le traitement de surfaces, qui comporte une plaque oscillante (12) suspendue à un boîtier (19) à l'aide d'éléments oscillants (11) élastiques et un entraînement à excentrique (17) électromoteur logé dans le boîtier (10) et conférant à la plaque oscillante (12) des mouvements d'oscillation orbitaux. Selon la présente invention, pour obtenir un boîtier (10) relativement plat et court, pouvant être manié à la manière d'un bloc-poignée, le site de couplage (30) entre l'entraînement à excentrique (17) et la plaque oscillante (12) est situé à proximité de l'arête avant (121) de la plaque oscillante (12), tandis que les éléments oscillants élastiques (11) sont fixés sur la plaque oscillante (12) à proximité de l'arête arrière (122) éloignée de l'arête avant. Dans la zone située entre le site de couplage (30) et les sites de fixation (31) des éléments oscillants (11), la plaque oscillante (12) est fixée au boîtier (10) à l'aide d'un convertisseur de mouvement (32) unilatéralement flexible qui convertit le mouvement orbital, produit au niveau du site de couplage (30), de la plaque oscillante en un mouvement orbital opposé au niveau des sites de fixation (31).
EP01995585A 2000-12-30 2001-12-06 Machine-outil a main Expired - Lifetime EP1347860B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10065771 2000-12-30
DE10065771A DE10065771A1 (de) 2000-12-30 2000-12-30 Handwerkzeugmaschine
PCT/DE2001/004592 WO2002053321A1 (fr) 2000-12-30 2001-12-06 Machine-outil a main

Publications (2)

Publication Number Publication Date
EP1347860A1 true EP1347860A1 (fr) 2003-10-01
EP1347860B1 EP1347860B1 (fr) 2004-11-03

Family

ID=7669458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01995585A Expired - Lifetime EP1347860B1 (fr) 2000-12-30 2001-12-06 Machine-outil a main

Country Status (6)

Country Link
US (1) US6846230B2 (fr)
EP (1) EP1347860B1 (fr)
JP (1) JP2004516161A (fr)
CN (1) CN1211187C (fr)
DE (2) DE10065771A1 (fr)
WO (1) WO2002053321A1 (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10328967A1 (de) * 2003-06-26 2005-01-13 Robert Bosch Gmbh Motorgetriebenes Handschleifwerkzeug
GB2414948B (en) * 2003-06-26 2006-06-07 Bosch Gmbh Robert Motor driven hand grinding tool
DE102004016015A1 (de) 2004-04-01 2005-10-20 Bosch Gmbh Robert Handgeführte Schleifmaschine, Schleifmaschinen-Halteeinheit sowie Schleifmaschinen-Gehäuse
DE102004047808A1 (de) * 2004-09-29 2006-03-30 Robert Bosch Gmbh Schleifhandwerkzeugmaschine, insbesondere Akkuschleifhandwerkzeugmaschine
DE102004047811A1 (de) * 2004-09-29 2006-03-30 Robert Bosch Gmbh Schleifhandwerkzeugmaschine, insbesondere Akkuschleifhandwerkzeugmaschine
DE102005009913A1 (de) * 2005-03-01 2006-09-07 Robert Bosch Gmbh Akkuhandwerkzeugmaschine mit Ladeschale
US7886840B2 (en) * 2008-05-05 2011-02-15 Ingersoll-Rand Company Motor assembly for pneumatic tool
US20090272556A1 (en) * 2008-05-05 2009-11-05 Ingersoll-Rand Company Angle head and bevel gear for tool
US20110139474A1 (en) * 2008-05-05 2011-06-16 Warren Andrew Seith Pneumatic impact tool
US8508084B2 (en) * 2008-06-26 2013-08-13 Techtronic Power Tools Technology Limited Power tool including hybrid electric motor design
US8672943B2 (en) * 2009-05-12 2014-03-18 Synvasive Technology, Inc. Surgical saw blade device and system
US9095352B2 (en) 2009-11-02 2015-08-04 Synvasive Technology, Inc. Bone positioning device and method
US8828013B2 (en) * 2009-11-02 2014-09-09 Synvasive Technology, Inc. Bone positioning device and method
US9592600B2 (en) 2011-02-23 2017-03-14 Ingersoll-Rand Company Angle impact tools
US8925646B2 (en) 2011-02-23 2015-01-06 Ingersoll-Rand Company Right angle impact tool
WO2013063043A1 (fr) 2011-10-24 2013-05-02 Synvasive Technology, Inc. Dispositifs, systèmes et procédés d'équilibrage du genou
EP2607016B1 (fr) * 2011-12-21 2016-08-10 Makita Corporation Ponceuse
DE102012210893A1 (de) * 2012-06-26 2014-01-02 Robert Bosch Gmbh Handschleifmaschine mit einer Schwingplatte
CN103567841B (zh) * 2012-08-07 2016-09-14 苏州宝时得电动工具有限公司 磨削动力工具
CN103567846B (zh) * 2012-08-07 2017-02-08 苏州宝时得电动工具有限公司 磨削动力工具
WO2014023229A1 (fr) * 2012-08-07 2014-02-13 苏州宝时得电动工具有限公司 Outil de meulage électrique
CN103567842B (zh) * 2012-08-07 2017-02-08 苏州宝时得电动工具有限公司 磨削动力工具
US9022888B2 (en) 2013-03-12 2015-05-05 Ingersoll-Rand Company Angle impact tool
US10105812B2 (en) 2014-07-17 2018-10-23 Applied Materials, Inc. Polishing pad configuration and polishing pad support
DE102016219909A1 (de) * 2016-10-13 2018-04-19 Robert Bosch Gmbh Handwerkzeugmaschine mit einer Exzentereinheit
EP3620263B1 (fr) * 2018-09-05 2022-11-09 Guido Valentini Tampon d'appui, ponceuse orbitale ou polisseuse comportant un tel tampon d'appui et élément de polissage ou de sablage en forme de feuille pour une fixation amovible à un tel tampon d'appui
ES1231504Y (es) 2019-05-14 2019-09-13 I4Life Innovacion Y Desarrollos S L Dispositivo desbloqueador multifuncional
US20210196322A1 (en) * 2019-12-27 2021-07-01 Candace Fletcher Foot Sander Assembly

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US4435923A (en) * 1982-03-22 1984-03-13 Ralph Regina Abrading tool
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DE4221029A1 (de) * 1992-06-26 1994-01-05 Bosch Gmbh Robert Schwingschleifer
DE9320393U1 (de) 1993-02-04 1994-06-16 Robert Bosch Gmbh, 70469 Stuttgart Handwerkzeugmaschine zur Flächenbearbeitung
US5947804A (en) * 1998-04-27 1999-09-07 Ryobi North America, Inc. Adjustable eccentricity orbital tool
DE19848918A1 (de) * 1998-07-28 2000-02-10 Bernhard Ganser Schleifvorrichtung für gebogene Flächen

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Also Published As

Publication number Publication date
JP2004516161A (ja) 2004-06-03
WO2002053321A1 (fr) 2002-07-11
US6846230B2 (en) 2005-01-25
DE50104441D1 (de) 2004-12-09
US20040014411A1 (en) 2004-01-22
CN1211187C (zh) 2005-07-20
EP1347860B1 (fr) 2004-11-03
DE10065771A1 (de) 2002-07-04
CN1406168A (zh) 2003-03-26

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