EP1347860A1 - Manual machine tool - Google Patents

Manual machine tool

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)
French (fr)
Other versions
EP1347860B1 (en
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/en
Application granted granted Critical
Publication of EP1347860B1 publication Critical patent/EP1347860B1/en
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

The invention relates to a manual machine tool used to machine surfaces, comprising a vibrating plate (12) which is suspended on a housing (19) by means of elastic vibrating elements (11) and an electromotive eccentric drive (17) which is accommodated in said housing and sets the vibrating plate (12) into orbital vibrating movements. In order to provide a relatively flat, short housing which can be handled in a manner similar to that of a handle block, the coupling point (30) between the eccentric drive (17) and the vibrating plate (121) is located in the vicinity of the front edge (121) of the vibrating plate (121). The elastic vibrating elements (11) are engaged in the vicinity of the rear edge (122). The vibrating plate (12) is fixed to the housing (10) in the area between the coupling point (30) and the points of engagement (31) of the vibrating elements (11) by means of a movement translator which is flexible on one side and which transforms the orbital movement of the vibrating plate (12) produced at the coupling point (30) into an orbital movement in the opposite direction at the points of engagement (31).

Description

HandwerkzeugmaschineHand tool
Stand der TechnikState of the art
Die Erfindung geht aus von einer Handwerkzeugmaschine zur Flächenbearbeitung, nach dem Oberbegriff des Anspruchs 1.The invention is based on a hand tool for surface machining, according to the preamble of claim 1.
Bei einer bekannten Handwerkzeugmaschine dieser ArtIn a known hand tool of this type
(DE 93 20 393 UI ) , wegen ihrer dreieckförmigen Schwingplatte und dem daran befestigten dreieckförmigen Schwingteller auch Deltaschleifer genannt, ist das Gehäuse aus einem den Elektromotor aufnehmenden, zylinderförmigen Griffteil, das parallel zur Schwingplatte ausgerichtet ist, und aus einem an dem Griffteil als Winkelkopf angesetzten Getriebekopf zusammengesetzt, der das vom Elektromotor angetriebene(DE 93 20 393 UI), because of its triangular oscillating plate and the triangular oscillating plate attached to it, also called a delta sander, 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
Exzentergetriebe aufnimmt. Die rechtwinklig zur Motorachse ausgerichtete Antriebswelle des Exzentergetriebes ist mit der Abtriebswelle des Elektromotors über eine biegsame Welle gekoppelt. Der Exzenterzapfen steht an der Unterseite des Getriebekopfes vor und taucht etwa in der Mitte derEccentric 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
Schwingplatte in die Schwingplatte ein, wobei die eine Relativdrehung zwischen Exzenterzapfen und Schwingplatte ermöglichende Kopplung von Exzenterzapfen und Schwingplatte durch ein Radiallager vorgenommen ist. Die dreieckformige Schwingplatte überdeckt die Unterseite des Getriebekopfs und steht mit ihrer Spitze nach vorn über den Getriebekopf vor. Mit der Schwingplatte ist der dreieckformige Schleifteller fest verbunden, auf den mittels eines Rlettverschlusses dreieckformige Schleifblatter aufgesetzt werden können.Vibrating plate in the vibrating plate, 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.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemaße Handwerkzeugmaschine zur schleifenden Flachenbearbeitung mit den Merkmalen des Anspruchs 1 hat den Vorteil, daß durch die erfmdungsgemaße Vorverlagerung der Koppelstelle zwischen Exzenterzapfen und Schwingplatte aus der Mitte heraus bis nahe an die eine Kante der Schwingplatte, die bei einer dreieckförmigen Ausbildung der Schwingplatte von der Dreieckspitze der Schwingplatte gebildet ist, der Elektromotor mit parallel zur Schwingplatte ausgericnteter Motorachse oberhalb der Schwingplatte plaziert und so ein recht flaches Gehäuse mit extrem kurzer Baulange erzielt werden kann, dessen Konturen weitgehend im Bereich der Schwingplatte verbleiben. Das durch seine Flachheit und Kurze zu einer Art Griffklotz gestaltbare Gehäuse bringt darüber hinaus den Vorteil, daß der vom Benutzer auf dasThe 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
Gehäuse m ergonomisch gunstiger Weise aufgebrachte, axiale Schleifdruck gleicnmaßig auf alle Bereiche der Schwingplatte übertragen wird und dadurch weitgehend ermudungsfrei ein gutes Schleifergebnis erzielt wird. Das Schleifergebn-s wird qualitativ noch durch eine optimale Schleifbewegung derHousing m ergonomically applied, axial grinding pressure is transferred equally to all areas of the vibrating plate and a good grinding result is achieved largely without fatigue. The grinding result is still qualitatively by an optimal grinding movement of the
Schwingplatte, insbesondere an deren Randern, verbessert, die in dem von der Koppelstelle abgewandten Bereich der Schleifplatte durch den Be egungsubersetzer erzwungen wird. Trotz der geringen Hohe und Baulange des Gehäuses muß nicht aαf extrem klemvolumige Sondermotoren zurückgegriffen werden, sondern es können herkömmliche Standard- Elektromotoren verwendet werden, was sich als Kostenvorteil niederschlagt .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. 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.
Durch die m den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebene Handwerkzeugmaschine möglich.Advantageous further developments and improvements of the hand-held power tool specified in claim 1 are possible through the measures listed in the further claims.
Gemäß einer vorteilhaften Ausfuhrungsform der Erfindung liegt die Koppelstelle zwischen Exzenterzapfen und Schwingplatte auf der Langsmittelachse der Schwingplatte, unα dieAccording to an advantageous embodiment of the invention, the coupling point between the eccentric pin and the oscillating plate lies on the longitudinal central axis of the oscillating plate, unα the
Angriffsstellen der Schwingelemente an der Schwingplatte befinden sich im gleichen Querabstand von der Langsmittelachse. Durch diese konstruktiven Maßnahmen fuhrt die Schwingplatte auf beiden Seiten der Langsmittelachse gleich große Schwmgbewegungen aus.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.
Gemäß einer vorteilhaften Ausfuhrungsform der Erfindung ist der Bewegungsubersetzer als torsionsweicher Steg ausgebildet, der ausschließlich m Richtung der Langsmittelachse der Schwingplatte biegeweich ist und endseitig einerseits an der Schwingplatte symmetrisch zu der Langsmittelachse und andererseits am Gehäuse befestigt ist. Zur Erzielung der ausschließlichen Biegeweichheit in Richtung der Langsmittelachse st der Steg rechteckformig mit zwei langen und zwei schmalen Seiten ausgebildet und so angeordnet, daß die schmalen Seiten sich parallel und im gleichen Querabstand zur Langsmittelachse der Schwingplatte erstrecken.According to an advantageous embodiment of the invention, 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. To achieve the exclusive flexibility in the direction of the longitudinal central axis, 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.
Gemäß einer alternativen Ausfuhrungsform der Erfindung weist der Bewegungsubersetzer zwei quer zur Langsmittelachse der Schwingplatte spiegelsymmetrisch angeordnete, voneinander beabstandete Befestigungselemente auf, die mit ihrem einen Ende an dem Gehäuse starr befestigt sind und mit ihrem anderen Ende m je ein m der Schwingplatte ausgebildetes Langloch eintauchen. Jedes Langloch erstreckt sich mit seiner größeren Lochachse parallel zur Langsmittelachse der Schwingplatte und besitzt eine kleinere Lochachse, die geringfügig großer ist als der Außendurchmesser des m das Langloch eintauchenden Abschnitts des Befestigungselerrients, so daß dieses in dem Langloch parallel zur Langsmittelachse der Schwingplatte gefuhrt ist.According to an alternative embodiment of the invention, 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.
Zeichnungdrawing
Die Erfindung ist anhand von m der Zeichnung dargestelltenThe invention is illustrated with reference to m of the drawing
Ausfuhrungsbeispielen in der nachfolgenden Beschreibung naner erläutert. Es zeigen:Exemplary embodiments are explained in the following description. Show it:
Fig. 1 eine perspektivische Ansicht eines Schwmgschleifers,1 is a perspective view of a Schwmgschleifers,
Fig. 2 eine gleiche Ansicht wie in Fig. 1 des längs seiner Langsachse aufgeschnittenen Schwmgschleifers, Fig. 3 eine Unteransicht αes Schwmgschleifers m Fig. 1 und 2,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 einen Schnitt längs der Linie IV - I \t ±n Fig. 34 shows a section along the line IV-I \ t ± n in FIG. 3
Fig. 5 einen Schnitt längs der Linie V - V in Fig. 4,5 shows a section along the line V - V in FIG. 4,
Fig. 6 eine schematische Darstellung einer Seitenansicht des Schwingschleifers gemäß einem zweiten Ausfuhrungsbeispiel,6 shows a schematic illustration of a side view of the orbital sander according to a second exemplary embodiment,
Fig. 7 einen Schnitt längs der Linie VII - VII in Fig. 6,7 shows a section along the line VII - VII in FIG. 6,
Fig. 8 eine gleiche Darstellung wie in Fig. 7 zurFig. 8 is the same representation as in Fig. 7 for
Erläuterung der orbitalen Scnwingbewegung der Schleifplatte des Deltaschle fers .Explanation of the orbital swing movement of the grinding plate of the delta slider.
Beschreibung der AusfuhrungsbeispieleDescription of the exemplary embodiments
Der in Fig. 1 und 2 perspektivisch und m Fig. 3, 4 und 5 verschiedenen Ansichten und Schnitten dargestellte Schwmgschleifer als Ausfuhrungsbeispiel für eine allgemeine Handwerkzeugmaschine zur Flachenbearbeitung, weist ein Gehäuse 10 auf, das einen Griffklotz zur Handhabung des Schwmgschleifers bildet, so daß diese Art des Schwmgschleifers auch als elektrischer Schleifklotz bezeichnet wird. An der Unterseite des Gehäuses 10 ist mittels zweier elastischer Scnw gelemente 11, von denen in Fig. 2 eines zu sehen ist, eine Ξchwmgplatte 12 aufgehängt, an dessen Unterseite ein Schleifteller 13 befestigt ist, der zur wechselbaren Aufnahme von Schleifblattern ausgebildet ist. Schwingplatte 12 und Schleifteller 13 haben eine gleiche Formgestaltung und weisen einen vorderen dreieckförmigen Abschnitt, der wie bei einem sog. Deltaschleifer ausgebildet ist, und einen sich daran e stuckig anschließenden, recnteckformigen Abschnitt auf. Das aus einem Ober- und Unterteil zusammengesetzte Gehäuse 10 ist semer Kontur in etwa der Schwingplatte 12 angepaßt und steht mit einem kurzen Gehauseabschnitt 101 mit reckeckformiger Grundflache über die von der Spitze 121 der Schwingplatte 12 abgekehrte Hinterkante 122 der Schwingplatte 12 vor. In diesem Gehauseabschnitt 101, der auf der Unterseite mit einem haubenartigen Deckel 14 verschließbar ist, sind elektrische Anschlüsse und elektrische Bauteile, wie Stromkabelemfuhrung 15 und Eιn-/Ausschalter 16, untergebracht.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. On the underside of the housing 10, 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. The housing 10, which is composed of an upper and lower part, is adapted approximately to the oscillating plate 12 and protrudes with a short housing section 101 with a rectangular base over the rear edge 122 of the oscillating plate 12 facing away from the tip 121 of the oscillating plate 12. In 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.
Stromkabelemfuhrung 15 und Ein-/Ausschalter 16 sind durch eine entsprechende Wandoffnung m der Ruckseite des Gehauseabschnitts 101 eingesetzt.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.
Die elastisch am Gehäuse 10 aufgehängte Schwingplatte 12 wird mittels eines Exzenterantriebs 17 m orbitale Schwingbewegung versetzt. Wie insbesondere aus Fig. 2 und 4 ersichtlich ist, weist der Exzenterantrieb 17 eine Antriebswelle 18 auf, die rechtwinklig zur Schwingplatte 12 im Gehäuse 10 drehbar gelagert ist. Die Lagerung ist mittels eines Radiallagers 19 vorgenommen, und die Antriebswelle 18 stutzt sich an ihrem von der Schwingplatte 12 abgekehrten Stirnende zur Aufnahme von axialen Kräften an einer beweglich im Gehäuse 10 eingelegten Kugel 20 ab. Mit der Antriebswelle 18 ist ein Exzenterzapfen 21 drehfest verbunden, der parallel zur Antriebswelle 18 um eine Exzentrizität radial versetzt angeordnet ist. Der Exzenterzapfen 21 ist mit der Schwingplatte 12 drehbar gekoppelt, wobei die Kopplung über ein Radiallager 20 vorgenommen ist, dessen innerer Lagerring drehfest auf dem Exzenterzapfen 21 sitzt, während der äußere Lagerring in der Schwingplatte 12 drehfest einliegt. Dabei stützt sich der innere Lagerring an einer Radialschulter am Exzenterzapfen 21 und an einem an der Stirnseite des Exzenterzapfens 21 aufliegenden Sicherungsring 42 ab, der mit einer durch eine Bohrung 24 in dem Schleifteller 13 hindurchgeführten und in einer axialen Gewindebohrung im Exzenterzapfen 21 verschraubten Befestigungsschraube 23 festgelegt ist.The vibrating plate 12 suspended elastically on the housing 10 is offset by an eccentric drive 17 m orbital oscillating movement. As can be seen in particular from FIGS. 2 and 4, 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. With the drive shaft 18, 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.
Zum Exzenterantrieb 17 gehört noch ein Elektromotor 25, dessen parallel zur Schwingplatte 12 ausgerichtete Abtriebswelle 26 über ein Winkelgetriebe 27, das hier als Kegelradgetriebe ausgebildet ist, die Antriebswelle 18 antreibt. Der sich etwa bis zur Hinterkante 122 der Schwingplatte 12 erstreckende Elektromotor 25 ist imThe 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. The electric motor 25, which extends approximately to the rear edge 122 of the oscillating plate 12, is shown in FIG
Gehäuseabschnitt 101 an ein durch die Stromkabeleinführung 15 hindurchgeführtes Stromkabel 28 unter Zwischenschaltung des Ein-/Ausschalters 16 angeschlossen.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.
Um die in Fig. 1 und 2 zu sehende kompakte Bauform desIn order to see the compact design of the
Schwingschleifers zu erreichen, ist die durch das Radiallager 22 gebildete Koppelstelle 30 zwischen Exzenterzapfen 21 und Schwingplatte 12 nahe der Spitze 121 der Schwingplatte 12 plaziert und sind die Angriffsstellen 31 der beiden elastischen Schwingelemente 11 an der Schwingplatte 12 nahe der Hinterkante 121 der Schwingplatte 12 angeordnet. Die Koppelstelle 30 liegt auf der Langsmittelachse 29, wahrend die Angriffsstellen 31 der beiden elastischen Schwingelemente 11 im gleichen Querabstand von der Langsmittelachse 29 der Schwingplatte 12 angeordnet sind. Von den gleich ausgebildeten, elastischen Schwingelementen 11 ist in Fig. 2 ein Schwingelement 11 zu sehen. Es besteht aus zwei parallelen, torsions- und biegeweichen Stäben 111, die endseitig mit einer oberen und unteren Konsole 112, 113 fest verbunden sind. Die obere Konsole 112 ist am Gehäuse 10 und die untere Konsole 113 an der Schwingplatte 12 befestigt. Die hierzu in die untere Konsole 113 eingeschraubten Befestigungsschrauben 33 sind mit ihren Kopf Fig. 3 zu sehen.To reach the orbital sander, 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. It consists of two parallel, torsionally and flexible rods 111, which are firmly connected at the ends to an upper and lower bracket 112, 113. The upper bracket 112 is attached to the housing 10 and the lower bracket 113 to the oscillating plate 12. The fastening screws 33 screwed into the lower console 113 for this purpose can be seen with their heads in FIG. 3.
Im Bereich zwischen der Koppelstelle 30 und denIn the area between the coupling point 30 and
Angriffsstellen 31 der beiden Schwingelemente 11 ist die Schwingplatte 12 mittels eines einseitig biegeweichen Bewegungsubersetzers 32 an dem Gehäuse 10 festgelegt. Der Bewegungsubersetzer 32 ist dabei so ausgebildet, daß die an der Koppelstelle 30 durch den rotierenden Exzenterzapfen 21 erzeugte Orbitalbewegung der Schwingplatte 12 eine gegenläufige Oπbtalbewegung in den Angriffsstellen 31 der elastischen Schwingelemente 11 hervorruft. In Fig. 8 sind zur Verdeutlichung die Orbitalbewegungen der Koppelstelle 30 und der Angriffsstellen 31 symbolisch dargestellt. Wahrend sich bei der Rotation des Exzenterzapfens 21 die Koppelstelle 30 von Pos. 1 im Uhrzeigersinn über Pos. 2, 3 und 4 bewegt, bewegen sich die Angriffsstellen 31 entgegen Uhrzeigersinn von Pos. 1, 2 und 3 nach Pos. 4. Der Bewegungsubersetzer 32 ist m dem Ausfunrungsbeispiel des Schwmgschleifers gemäß Fig. 1 - 5 durch zwei quer zur Langsmittelachse 29 der Schwingplatte 12 voneinander beabstandete, spiegelsymmetrisch zur Langsmittelachse 29 der Schwingplatte 12 angeordnete Befestigungselemente 34 sowie durch zwei in der Schwingplatte 12 angeordnete Langlocher 35 realisiert. Die Langlocher 35 (Fig. 2) sind im gleichen Querabstand von der Langsmittelachse 29 der Schwingplatte 12 so angeordnet, daß sich ihre größeren Lochachsen parallel zur Langsmittelachse 29 erstrecken. Die kleineren Lochachsen der Langlocher 35 sind wenig großer bemessen als der Außendurchmesser des m das Langloch 35 eintauchenden Teils der Befestigungselemente 34, so daß die Befestigungselemente 34 in den Langlochern 35 in Längsrichtung gefuhrt sind.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. 1-5 by two fastening elements 34 spaced apart from one another transversely to the longitudinal central axis 29 of the oscillating plate 12, arranged mirror-symmetrically to the longitudinal central axis 29 of the oscillating plate 12, and by two elongated holes 35 arranged in the oscillating plate 12. The elongated holes 35 (FIG. 2) are arranged at the same transverse distance from the longitudinal central axis 29 of the oscillating plate 12 so that their larger perforated axes extend parallel to the longitudinal central axis 29. 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.
Wie Fig. 5 zeigt, besteht jedes Befestigungselement 34 aus einer Kopfschraube 37, die durch eine Ausnehmung 36 im Schleifteller 11 hmdurchgefuhrt und m einem Gewindeabschnitt im Gehäuse 10 verschraubt ist, sowie aus einer auf den Schraubenschaft aufgesetzten Fuhrungshulse 38, die mit ihrem unteren Hulsenabschnitt m das Langloch 35 eintaucht. An dem von dem Eintauchende abgekehrten oberen Ende tragt ede Fuhrungshulse 38 zwei im Axialabstand voneinander angeordnete Ringflansche 381, 382, die jeweils eine der Langskanten einer über der Schwingplatte 12 im Axialabstand liegenden, zur Schwingplatte 12 parallelen Unwuchtplatte 39 übergreifen, so daß die Unwuchtplatte 39 zwischen den Ringflanschen 381 und 382 der beiden Fuhrungshulsen 38 axial verschieblich gefuhrt ist. Die Unwuchtplatte 39 dient als Ausgleichsgewicht zur Auswuchtung des Schwmgschleifers und ist mit einer von der Antriebswelle 18 gegenläufig zur Schwingplatte 12 angetriebenen Exenterplatte 40 (Fig. 2 und 4) so gekoppelt, daß sie eine zur Schwingplatte 12 gegenläufige Schwingbewegung ausfuhrt. Im Bereich der Schwingelemente 11 ist die Unwuchtplatte 39 ausgespart (Fig. 2) .As shown in FIG. 5, 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. At the upper end facing away from the immersion end, 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).
Der Fig. 6 und 7 nur schematisch skizzierte Schwmgschleifer ist insoweit modifiziert, als daß das Gehäuse 10' innerhalb der Kontur der Schwingplatte 12' liegt und an der Hinterkante 122 der Schwingplatte 12' nicht übersteht. Die Schwingplatte 12' hat Dreieckform mit leicht konvex gewölbten Seitenkanten. Der mit seiner Motorachse ebenfalls parallel zur Schwingplatte 12 angeordnete Elektromotor 25 treibt wiederum über das Winkelgetriebe 27 die Antriebswelle 18 mit Exzenterzapfen 21 an, der die Schwmgplatte 12' im Bereich der Koppelstelle 30 in die beschriebene orbitale Schwingbewegung versetzt. Die beiden Schwingelemente 11, die wiederum spiegelsymmetrisch zur Langsmittelachse 29 der Schw gplatte 12' an der Scnw gplatte 12' in den Angriffsstellen 31 befestigt sind, sind hier als torsionsweiche, biegeelastische Stabe ausgebildet. Der Bewegungsubersetzer 32 wird von einem torsionsweichen Steg 41 gebildet, der ausschließlich in Richtung der Langsmittelachse 29 der Schwmgplatte 12 f biegeweich ist und endseitig einerseits an der Schwmgplatte 12' symmetrisch zu deren Langsmittelachse 29 und andererseits am Gehäuse 10' befestigt ist. Der Steg 41 ist mittig zwischen der Koppelstelle 30 und αen Angriffsstellen 31 angeordnet. Er weist einen rechteckigen Querschnitt mit zwei langen und zwei schmalen Seiten auf und ist so angeordnet, daß die schmalen Seiten sich parallel zur L ngsmittelachse 29 der Schwingplatte 12' erstrecken.6 and 7 only schematically outlined vibratory grinder is modified to the extent that the housing 10 'lies within the contour of the vibrating plate 12' and does not protrude at the rear edge 122 of the vibrating plate 12 '. 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 '.
In Fig. 8 ist dargestellt, wie die durch den Exzenterantrieb 17 erzeugte orbitale Schwingbewegung der Koppelstelle 30 zwischen Exzenterzapfen 21 und Schwingplatte 12' durch den Steg 41 gegenläufige, ebenfalls orbitale Schwingbewegungen der Angriffsstellen 31 der elastischen Schwingelemente 11 an der Schwingplatte 12' hervorruft. Die jeweiligen Positionen der Koppelstelle 30, der Angriffsstellen 31 und des Stegs 41 im Verlauf einer Kreisbahn sind mit den Positionen 1, 2, 3 und 4 gekennzeichnet. In den Positionen 1 und 3 ist der Steg 41 in Richtung der L ngsmittelachse 29 der Schwingplatte 12' ausgelenkt, in den Positionen 2 und 4 ist der Mittelsteg im Uhrzeigersinn bzw. gegen Uhrzeigersinn etwas verdreht. Wie zu erkennen ist, führt die gesamte Schwingplatte 12' bis auf den Bereich am Steg 41 selbst eine Kreisbewegung aus, welche für gute Schleifergebnisse wichtig ist. 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. In positions 1 and 3, 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. As can be seen, 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.

Claims

Ansprüche Expectations
1. Handwerkzeugmaschine zur Flächenbearbeitung, mit einer an der Unterseite eines Gehäuses (10; 10') mittels elastischer Schwingelemente (11) aufgehängten Schwingplatte (12; 12') zur Aufnahme eines Schleifwerkzeugs, mit einem im Gehäuse (10; 10') aufgenommenen, die Schwingplatte (12; 12') in orbitale Schwingbewegungen versetzenden Exzenterantrieb (17), der eine von einem Elektromotor (25) angetriebene1. hand tool for surface processing, with a vibration plate (12; 12 ') suspended on the underside of a housing (10; 10') by means of elastic oscillating elements (11) for receiving a grinding tool, with one accommodated in the housing (10; 10 '), the oscillating plate (12; 12 ') is set in orbital oscillating eccentric drive (17), which is driven by an electric motor (25)
Antriebswelle (18) und einen mit der Schwingplatte (12; 12') relativ zu dieser drehbar gekoppelten Exzenterzapfen (21) aufweist, der exzentrisch zur Antriebswelle (18) mit dieser drehfest verbunden ist, dadurch gekennzeichnet, daß die Koppelstelle (30) zwischen Exzenterzapfen (21) und Schwingplatte (12; 12') nahe der einen Kante (121) der Schwingplatte (12; 12') liegt und. die elastischen Schwingelemente (11) nahe der davon abgekehrten Kante (122) der Schwingplatte (12; 12') an der Schwingplatte (12; 12') angreifen und daß die Schwingplatte (12; 12') im Bereich zwischen der Koppelstelle (30) und den Angriffsstellen (31) der Schwingelemente (11) an der Schwingplatte (12; 12') an dem Gehäuse (10; 10') mittels eines einseitig biegeweichen Bewegungsübersetzers (32) festgelegt ist, der so ausgebildet ist, daß die an der Koppelstelle (30) erzeugte Orbitalbewegung eine gegenläufige Orbitalbewegung an den Angriffsstellen (31) hervorruft.Drive shaft (18) and an eccentric pin (21) which is rotatably coupled to the oscillating plate (12; 12 ') relative to the latter and which is non-rotatably connected to the drive shaft (18), characterized in that the coupling point (30) between the eccentric pin (21) and vibrating plate (12; 12 ') near one edge (121) of the vibrating plate (12; 12') and. the elastic oscillating elements (11) engage on the oscillating plate (12; 12 ') near the edge (122) of the oscillating plate (12; 12') facing away from them and that the oscillating plate (12; 12 ') in the area between the coupling point (30) and the points of attack (31) of the oscillating elements (11) on the oscillating plate (12; 12 ') on the housing (10; 10') is fixed by means of a one-sided flexible motion translator (32) which is designed such that the at the coupling point (30) generated orbital movement causes an opposing orbital movement at the points of attack (31).
2. Handwerkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Koppelstelle (30) auf der2. Hand tool according to claim 1, characterized in that the coupling point (30) on the
Längsmittelachse (29) der Schwingplatte (12; 12') liegt und daß die Angriffsstellen (31) der Schwingelemente (11) sich im gleichen Querabstand von der Längsmittelachse (29) befinden.The longitudinal central axis (29) of the oscillating plate (12; 12 ') lies and that the points of attack (31) of the oscillating elements (11) are at the same transverse distance from the longitudinal central axis (29).
3. Handwerkzeugmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die der Koppelstelle (30) naheliegende Kante (121) die in Arbeitshaltung vordere Kante der Schwingplatte (12; 12') und die den Angriffsstellen (31) der Schwingelemente {11) naheliegende Kante, die in Arbeitshaltung hintere Kante (122) der Schwingplatte ( 12; 12') ist.3. Hand tool according to claim 1 or 2, characterized in that the coupling point (30) obvious edge (121) the front working edge of the oscillating plate (12; 12 ') and the points of attack (31) of the oscillating elements {11) nearby Edge, which is the rear edge (122) of the oscillating plate (12; 12 ') in the working position.
4. Handwerkzeugmaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Bewegungsübersetzer (32) als torsionsweicher Steg (41) ausgebildet ist, der ausschließlich in Richtung der Längsmittelachse (29) der Schwingplatte (12') biegeweich ist und endseitig einerseits an der Schwingplatte (12') symmetrisch zu deren Längsmittelachse (29) und andererseits am Gehäuse (10 ' ) befestigt ist.4. Hand tool according to claim 2 or 3, characterized in that the movement translator (32) is designed as a torsionally soft web (41) which is flexible only in the direction of the longitudinal central axis (29) of the oscillating plate (12 ') and on the one hand at the end of the oscillating plate (12 ') symmetrically to the longitudinal central axis (29) and on the other hand is attached to the housing (10').
5. Handwerkzeugmaschine nach Anspruch 4, dadurch gekennzeichnet, daß der Steg (41) einen rechteckigen Querschnitt mit zwei langen und zwei schmalen Seiten aufweist und so angeordnet ist, daß sich die schmalen Seiten parallel zur Längsmittelachse (29) der Schwingplatte (12') erstrecken.5. Hand tool according to claim 4, characterized in that the web (41) 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 ').
6. Handwerkzeugmaschine nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Bewegungsübersetzer (32) zwei quer zur Längsmittelachse (29) der Schwingplatte (12) voneinander beabstandete Befestigungselemente (34) aufweist, die mit ihrem einen Ende an dem Gehäuse (10) starr befestigt sind und mit ihrem anderen Ende in je ein in der Schwingplatte (12) ausgebildetes Langloch6. Hand tool according to claim 2 or 3, characterized in that the movement translator (32) has two transverse to the longitudinal central axis (29) of the oscillating plate (12) spaced apart fastening elements (34) which are rigid at one end on the housing (10) are fastened and with their other end in an elongated hole formed in the oscillating plate (12)
(35) eintauchen, dessen größere Lochachse sich parallel zur Längsmittelachse (29) der Schwingplatte (12) erstreckt und dessen kleinere Lochachse wenig größer ist als der Außendurchmesser des in das Langloch (35) eintauchenden Abschnitts des Befestigungselements (34).(35), the larger hole axis of which extends parallel to the longitudinal center axis (29) of the oscillating plate (12) and the smaller hole axis of which is slightly larger than the outer diameter of the section of the fastening element (34) which plunges into the elongated hole (35).
7. Handwerkzeugmaschine nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß eine eine zur Schwingplatte7. Hand tool according to one of claims 1-6, characterized in that a to the oscillating plate
(12) gegenläufige Bewegung ausführende Unwuchtplatte (39) parallel zur Schwingplatte (12) angeordnet, im(12) counter-movement imbalance plate (39) arranged parallel to the oscillating plate (12), in
Bereich der Befestigungselemente (34) geführt und mit einer von der Antriebswelle (18) zur Schwingplatte (12) gegenläufig angetriebenen Exzenterplatte (40) gekoppelt ist.Area of the fasteners (34) and is coupled to an eccentric plate (40) driven in opposite directions from the drive shaft (18) to the oscillating plate (12).
8. Handwerkzeugmaschine nach einem der Ansprüche 3 - 7, dadurch gekennzeichnet, daß der Elektromotor (25) sich oberhalb und parallel zu der Schwingplatte (12; 12') bis etwa zur Hinterkante (122) der Schwingplatte (12; 12') erstreckt und daß in der Antriebskette zwischen Antriebswelle (18) und einer Abtriebswelle (26) des Elektromotors (25) ein Winkelgetriebe (27), vorzugsweise ein Kegelradgetriebe, angeordnet ist.8. Hand tool according to one of claims 3-7, characterized in that the electric motor (25) extends above and parallel to the oscillating plate (12; 12 ') up to approximately the rear edge (122) of the oscillating plate (12; 12') and that in the drive chain between the drive shaft (18) and an output shaft (26) of the Electric motor (25), an angular gear (27), preferably a bevel gear, is arranged.
9. Handwerkzeugmaschine nach Anspruch 8, dadurch gekennzeichnet, daß das Gehäuse (10) eine in etwa der Schwingplatte (12) angepaßte Kontur aufweist und mit einem die elektrischen Anschlüsse und Bauteile, wie Stromkabeleinführung (15) und Ein-/Ausschalters (16), aufnehmenden, kurzen Gehäuseabschnitt (101) mit rechteckförmiger Grundfläche über die Hinterkante (122) der Schwingplatte (12) übersteht.9. Hand tool according to claim 8, characterized in that the housing (10) has an approximately in the oscillating plate (12) adapted contour and with one of the electrical connections and components, such as power cable entry (15) and on / off switch (16), receiving short housing section (101) with a rectangular base protrudes beyond the rear edge (122) of the oscillating plate (12).
10. Handwerkzeugmaschine nach einem der Ansprüche 1 - 9, dadurch gekennzeichnet, daß das Gehäuse (10; 10') einen handhabbaren Griffklotz bildet. 10. Hand tool according to one of claims 1-9, characterized in that the housing (10; 10 ') forms a manageable grip block.
EP01995585A 2000-12-30 2001-12-06 Manual machine tool Expired - Lifetime EP1347860B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10065771 2000-12-30
DE10065771A DE10065771A1 (en) 2000-12-30 2000-12-30 Hand tool
PCT/DE2001/004592 WO2002053321A1 (en) 2000-12-30 2001-12-06 Manual machine tool

Publications (2)

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

Family

ID=7669458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01995585A Expired - Lifetime EP1347860B1 (en) 2000-12-30 2001-12-06 Manual machine tool

Country Status (6)

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

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10328967A1 (en) * 2003-06-26 2005-01-13 Robert Bosch Gmbh Motor-driven hand grinding tool
GB2414949B (en) * 2003-06-26 2006-06-07 Bosch Gmbh Robert Motor driven hand grinding tool
DE102004016015A1 (en) 2004-04-01 2005-10-20 Bosch Gmbh Robert Hand-guided grinding machine, grinding machine holding unit and grinding machine housing
DE102004047808A1 (en) * 2004-09-29 2006-03-30 Robert Bosch Gmbh Grinding hand tool machine, in particular Akkuschleifhandwerkzeugmaschine
DE102004047811A1 (en) * 2004-09-29 2006-03-30 Robert Bosch Gmbh Grinding hand tool machine, in particular Akkuschleifhandwerkzeugmaschine
DE102005009913A1 (en) * 2005-03-01 2006-09-07 Robert Bosch Gmbh Cordless hand tool with charging tray
US7886840B2 (en) * 2008-05-05 2011-02-15 Ingersoll-Rand Company Motor assembly for pneumatic tool
US20110139474A1 (en) * 2008-05-05 2011-06-16 Warren Andrew Seith Pneumatic impact tool
US20090272556A1 (en) * 2008-05-05 2009-11-05 Ingersoll-Rand Company Angle head and bevel gear for 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
US8828013B2 (en) * 2009-11-02 2014-09-09 Synvasive Technology, Inc. Bone positioning device and method
US9095352B2 (en) 2009-11-02 2015-08-04 Synvasive Technology, Inc. Bone positioning device and method
US8925646B2 (en) 2011-02-23 2015-01-06 Ingersoll-Rand Company Right angle impact tool
US9592600B2 (en) 2011-02-23 2017-03-14 Ingersoll-Rand Company Angle impact tools
US9808356B2 (en) 2011-10-24 2017-11-07 Synvasive Technology, Inc. Knee balancing devices, systems and methods
EP2607016B1 (en) * 2011-12-21 2016-08-10 Makita Corporation Sander
DE102012210893A1 (en) * 2012-06-26 2014-01-02 Robert Bosch Gmbh Hand grinder with a vibration plate
WO2014023229A1 (en) * 2012-08-07 2014-02-13 苏州宝时得电动工具有限公司 Grinding power tool
CN103567846B (en) * 2012-08-07 2017-02-08 苏州宝时得电动工具有限公司 Grinding power tool
CN103567842B (en) * 2012-08-07 2017-02-08 苏州宝时得电动工具有限公司 Grinding power tool
CN103567841B (en) * 2012-08-07 2016-09-14 苏州宝时得电动工具有限公司 Grinding power tool
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 (en) * 2016-10-13 2018-04-19 Robert Bosch Gmbh Hand tool with an eccentric unit
EP3620263B1 (en) * 2018-09-05 2022-11-09 Guido Valentini Backing pad, orbital sander or polisher with such a backing pad, and sheet-like sanding or polishing member for releasable attachment to such a backing pad
ES1231504Y (en) 2019-05-14 2019-09-13 I4Life Innovacion Y Desarrollos S L Multifunctional Unlocking Device
US20210196322A1 (en) * 2019-12-27 2021-07-01 Candace Fletcher Foot Sander Assembly

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707357A (en) * 1950-03-06 1955-05-03 L E Jones Oscillating shoe abrading apparatus
US4435923A (en) * 1982-03-22 1984-03-13 Ralph Regina Abrading tool
US4527360A (en) * 1983-11-25 1985-07-09 The Singer Company Actuator for in-line sander
DE4221029A1 (en) * 1992-06-26 1994-01-05 Bosch Gmbh Robert Orbital sander
DE9320393U1 (en) 1993-02-04 1994-06-16 Robert Bosch Gmbh, 70469 Stuttgart Hand tool for surface processing
US5947804A (en) * 1998-04-27 1999-09-07 Ryobi North America, Inc. Adjustable eccentricity orbital tool
DE19848918A1 (en) * 1998-07-28 2000-02-10 Bernhard Ganser Grinding device for curved surfaces, with curved resting surface fixed to head by elastic element

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02053321A1 *

Also Published As

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

Similar Documents

Publication Publication Date Title
EP1347860A1 (en) Manual machine tool
EP0941804B1 (en) Grinding device
EP0579949B1 (en) Face grinding machine
EP0424720B1 (en) Attachement for angle grinder
DE4314799C2 (en) Power tool
WO1987002924A1 (en) Portable grinder
DE3518984A1 (en) BALANCED ORBIT SANDER
DE3805926C2 (en) Motor-driven hand-held unit with oscillating tool movement
WO2002043909A1 (en) Hand machine tool comprising at least one rotating cutting disk, in particular, a circular saw blade
EP0525328A1 (en) Grinder with eccentric
DE10244793A1 (en) Housing unit for hand-held power tool has at least two housing elements with vibration damping element holding them together
DE19914956C2 (en) Grinder driven by an electric motor
EP1478491B1 (en) Manual orbital sander
DE102014212794A1 (en) Oszillationsantriebsvorrichtung
DE2302703B2 (en) Grain processing device - has slide and contact distance between work to be processed and grain made almost constant
DE3326854A1 (en) Portable machine tool having a tool disc mounted by way of double eccentrics
WO1996003900A1 (en) Motor-driven brush
DE4432974B4 (en) Hand-guided, electric belt sander
DE2006466C3 (en) Vibration hand grinder for circular and straight grinding
DE10132885B4 (en) hand grinder
DE8817233U1 (en) Hand unit with oscillating tool movement
DE9117269U1 (en) Orbital sander
DE4143684C2 (en) Counterbalanced reciprocating mechanism
DE2712278A1 (en) Electrically driven paint stripping tool - has oscillating blade driven by crank through worm and wheel reduction gear
EP0167760A1 (en) Oscillating drive for utensils and tools

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030730

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JONAS, STEPHAN

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RBV Designated contracting states (corrected)

Designated state(s): DE FR GB

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 50104441

Country of ref document: DE

Date of ref document: 20041209

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050228

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ET Fr: translation filed
26N No opposition filed

Effective date: 20050804

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20100218

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20110107

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20101221

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110701

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50104441

Country of ref document: DE

Effective date: 20110701

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20111206

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20120831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111206

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120102