EP1211022B1 - Dispositif de serrage pour fixer la feuille abrasive sur une ponceuse orbitale - Google Patents

Dispositif de serrage pour fixer la feuille abrasive sur une ponceuse orbitale Download PDF

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Publication number
EP1211022B1
EP1211022B1 EP01127816A EP01127816A EP1211022B1 EP 1211022 B1 EP1211022 B1 EP 1211022B1 EP 01127816 A EP01127816 A EP 01127816A EP 01127816 A EP01127816 A EP 01127816A EP 1211022 B1 EP1211022 B1 EP 1211022B1
Authority
EP
European Patent Office
Prior art keywords
clamping
oscillating plate
spring
flank
lever
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.)
Expired - Lifetime
Application number
EP01127816A
Other languages
German (de)
English (en)
Other versions
EP1211022B8 (fr
EP1211022A2 (fr
EP1211022A3 (fr
Inventor
Walter Penka
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.)
Metabowerke GmbH and Co
Original Assignee
Metabowerke GmbH and Co
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 Metabowerke GmbH and Co filed Critical Metabowerke GmbH and Co
Publication of EP1211022A2 publication Critical patent/EP1211022A2/fr
Publication of EP1211022A3 publication Critical patent/EP1211022A3/fr
Application granted granted Critical
Publication of EP1211022B1 publication Critical patent/EP1211022B1/fr
Publication of EP1211022B8 publication Critical patent/EP1211022B8/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B24B23/046—Clamping or tensioning means for abrasive sheets

Definitions

  • the invention relates to a vibrating plate to a Hand orbital sander with clamping devices for releasably holding the abrasive sheet in the generic concept of the patent claims 1 and 13 specified type.
  • Such a clamping or clamping device is from the German Patent DE 28 32 424 A2 known.
  • the clamping lever for clamping the abrasive sheet is based on his Swivel axis a two-armed clamping lever, where one Clamping lever arm the clamping surface for loading the Abrasive sheet has and the other Klemmhebelarm is designed as an actuating element, which for lifting the clamping surface out of the clamping position in the direction of Back of the swinging plate must be depressed.
  • a similar clamping device is from the German patent application DE 39 21 613 A1. In such embodiments sits the spring acting on the clamping lever on the pivot axis for the clamping lever and forces the Clamping lever constantly in its clamping position. That is why the Clamping lever only by constantly depressing its actuating element be held in the open position.
  • the US-document 2,242,545 also describes a Clamping device for the abrasive sheet on one Hand swing grinder with a clamping lever Cam contour has. At the cam contour is a Leaf spring, which in the open position of the clamping device a torque on the clamping lever against the clamping direction is exercised. In the tension position is the abrasive sheet between the on the cam contour the clamping lever adjacent leaf spring and an elastic abutment jammed, and so will the clamping force performed by the eccentric lever Clamping force and not by an adjoining Spring applied.
  • tensioning devices for clamping the abrasive sheet on a hand swing grinder, in which the Clamping lever held with the clamping surface in the open position can be.
  • a second operating lever is provided for this, with an eccentric the the actuating element forming arm of the clamping lever towards the swing plate back down.
  • This additional actuator for the clamping lever is because of the variety The required parts consuming and has a large Space requirements.
  • the invention is based on the object, a vibrating plate with clamping devices to create the type mentioned, in the clamping lever with simple means bistable both in held its clamping position and in its open position is, and with sufficient clamping force easy to use is.
  • the pivot lever in two positions can be tilted, namely on the one hand in the usual clamping position in which he under spring pressure with his Clamping area if necessary with interposition of the edge area an abrasive sheet against the upper swing plate backside pressed, and on the other in the Offenstel in which he is fixated and of whom he is overcome the spring force over the dead center in the apex area the cam-like contour of the clamping lever across the Actuator be swung back into the clamping position can.
  • a Tool carrier plate 3 comprises an elastic material, which on the bottom of the metal swing plate 2 is firmly applied.
  • the swing plate 2 has an in the generally rectangular plan shape, and near the shorter ones Rectangular pages are located on the top or back page 7 of the swing plate 2 Clamps 5.
  • an abrasive sheet 6 is placed, which around the narrow sides 4 of the vibrating plate 2 laid around and in a flat clamping area at the Back 7 clamped by means of the clamping devices 5 can be.
  • each of the tensioning devices 5 has a clamping lever 8, the distance from the back 7 of the swing plate 2 at an axis 9 is pivotally mounted, which is parallel to the narrow surface side 4 of the vibrating plate 2 extends.
  • the Axis 9 is located on a bearing block 10, which at the Rear side 7 of the vibrating plate 2 projects upwards.
  • the clamping lever 8 has on that side of the axis 9, the lies to the narrow surface side 4 of the vibrating plate 2 out at the bottom of a molding in the manner of a protruding Shoe heel with a lower-side clamping surface 11, which is flat and under tensioning the edge of the possibly existing abrasive sheet 6 against a flat Counter surface on the back 7 of the vibrating plate 2 elastic is pressed.
  • the clamping lever. 8 about an actuator 12 so pivoted about the axis 9 be that the clamping surface 11 of the clamping counter surface on the back 7 of the swing plate 2 lifts.
  • the actuating element 12 is designed in the manner of a nose, the approximately in the radial direction to the pivot axis 9 on Clamping lever 8 protrudes. Relative to the pivot axis 9 is located the actuator 12 on the same page of the clamping lever 8 as its clamping surface 11. Overall the clamping lever 8 a compact shape, whereby its lever arms are only slightly pronounced.
  • the Cam contour 14 has a peak area that is parallel to the pivot axis 9 extends. In the apex area points the cam contour 14 a significant rounding, to the one first flank 15 of the cam contour 14 connects. At the opposite Page beyond one explained below Dead center in the apex area is the cam contour 14 in a second edge 16 via, and the two edges 15 and 16 of the cam contour 14 serve as attack surfaces for the spring 13, depending on whether the clamping lever. 8 in the clamping position or in the open position.
  • leaf spring 13 at the spring 13 is a leaf spring under Preload on the cam contour 14 or on their flanks 15th or 16 is present.
  • the bias of the leaf spring 13 is accordingly directed so that they are with their am Clamping lever 8 abutting portion of the back 7 of Swing plate 2 tries to move upwards.
  • Attachment on one of the flanks 15 or 16 of the cam contour 14 is the tensioned in this position leaf spring 13 in substantially parallel to the back 7 of the vibrating plate 2 aligned.
  • the first flank 15 of the cam contour 14 is preferably crowned running and goes steadily into the convex curve of the apex portion of the cam contour 14 via.
  • the on the other side beyond the dead center of the apex region subsequent second edge 16 of the cam contour 14 on the clamping lever 8 is flat throughout.
  • Relative to the pivot axis 9 are the clamping surface eleventh and the actuator 12 on one side of the Clamping lever 8 and the raised projecting cam contour 14th on the opposite side of the clamping lever 8, wherein the distance of the pivot axis 9 to the cam contour 14 towards those Lever arm forms, on which the spring 13 engages and when abutting the flank 15 the clamping lever 8 in the direction seeks to pivot the clamping direction.
  • This will be the elastic clamping force for clamping the abrasive sheet 6 applied to the clamping surface 11 of the clamping lever 8.
  • the clamping lever 8 Opposite the clamping position here is the clamping lever 8 to about 90 ° swiveled, slightly larger is the angle between the first flank 15 of the cam contour 14 and the second Flank 16, so that in the clamping position not that of the apex area wegode, planar area of the first edge 15 of the Cam contour 14 is seated on the spring 13. This ensures that the spring 13, the clamping lever 8 in the region of first edge 15 always near the apex area of the cam contour 14 applied to the largest possible lever arm a high pivoting moment on the clamping lever 8 in the direction to create its clamping position.
  • the spring 13 is also designed as a leaf spring.
  • the spring is 13 superimposed here at both ends, and the supports 21, 22 are through recesses in the back 7 of the vibrating plate. 2 educated.
  • the spring 13 acts on the cam contour 14 of the Clamping lever 8 in a hollow area, this is between the supports 21 and 22 on the back of the 7 Swing plate 2 a recessed space 23 is provided.
  • the toward the cam contour 14 of the clamping lever. 8 prestressed spring 13 can thus be at deflection through the cam contour 14 during pivoting of the clamping lever Lower 8 in the space 23 in, creating a block the spring 13 is avoided.
  • the clamping lever 8 has a protruding Cam contour 24 with flanks 25 and 26, with which he under spring tension, however, directly on the back 7 the swing plate 2 is seated at the relevant point forms an abutment 28 in the form of a flat surface, on which the clamping lever 8 with its cam contour 24 slide can.
  • the clamping lever 8 In the clamping position, the clamping lever 8 is supported by the first flank 25 of its cam contour 24 with its vertex area, the relative to the cam flanks 25, 26 a greater distance from the pivot axis 27 has, on the abutment 28 on the back 7 of the swing plate 2 from.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Jigs For Machine Tools (AREA)
  • Clamps And Clips (AREA)

Claims (14)

  1. Plaque oscillante (2) d'une ponceuse orbitale manuelle avec des dispositif de serrage disposés sur la face arrière de ladite plaque oscillante pour fixer de manière amovible une feuille en matière abrasive (6) dont une section marginale s'enroule autour d'un côté étroit avoisinant de ladite plaque oscillante, chaque dispositif consistant en un levier de serrage (8) pivotant autour d'un axe (9) parallèle à la face arrière (7) de la plaque oscillante, levier qui présente, sur son côté orienté vers le côté étroit de la plaque oscillante, une surface ou un bord de serrage (11) pouvant être serré contre la face arrière (7) de la plaque oscillante avec intercalation de la section marginale de la feuille en matière abrasive (6), et qui est soumis, au moins dans sa position de serrage, à l'influence d'un ressort (13) exerçant la force de serrage, et qui, en outre, est pourvu d'un élément d'actionnement (12) à commande manuelle pour son pivotement de la position de serrage à une position ouverte, dans laquelle la surface de serrage (11) est écartée de la face arrière (7) de la plaque oscillante,
    caractérisé en ce que
    le levier de serrage (8) présente un contour (14) en saillie, du type came,, qui est soumis à l'influence du ressort (13) exerçant la force de serrage,
    que le contour (14) présente une section de sommet qui est située à la plus grande distance de l'axe de pivotement (9), et au niveau de laquelle le ressort (13) n'exerce pas de couple de rotation sur le levier de serrage (8),
    que le contour (14) présente, à la suite de cette section de sommet, un premier flanc (15), le ressort (13), lorsqu'il agit sur celui-ci, exerçant un couple de rotation dans la direction de rotation de serrage sur le levier de serrage (8),
    que le contour (14) présente un deuxième flanc (16) qui, au-delà de la section de sommet, est situé à l'opposé du premier flanc (15) et que, lorsque le ressort (13) agit sur celui-ci, un couple de rotation à l'opposé de la direction de rotation de serrage est exercé sur le levier de serrage (8) et
    que le ressort (13) est un ressort à lames qui, sous précontrainte, porte avec l'un de ses côtés larges contre le contour (14).
  2. Plaque oscillante selon la revendication 1,
    caractérisée en ce que
    le contour de type came (14) du levier de serrage (8) présente un arrondi convexe et que le premier flanc (15) au moins se fond progressivement avec cet arrondi.
  3. Plaque oscillante selon la revendication 1 ou 2,
    caractérisée en ce que
    le deuxième flanc (16) est plan dans la section faisant suite à la section de sommet du contour en forme de came (14) du levier de serrage (8).
  4. Plaque oscillante selon la revendication 1 ou 3,
    caractérisée en ce que
    le premier flanc (15) du contour en forme de came (14) du levier de serrage (8) fait suite avec sa section arrondie à une section plane (15a) et que l'angle, formé entre cette section plane (15a) et le deuxième flanc (16) du contour de type came (14), est plus grand que l'angle de pivotement du levier de serrage (8) entre la position de serrage et la position ouverte de celui-ci.
  5. Plaque oscillante selon la revendication 4,
    caractérisée en ce que
    l'angle entre la première section (15a) du premier flanc (15) et le deuxième flanc (16) du contour de type came (14) du levier de serrage (8) est d'au moins 90 degrés.
  6. Plaque oscillante selon l'une des revendications 2 à 5,
    caractérisée en ce que
    la surface de serrage (11) du levier de serrage (8) est plane et que la section plane (15a) du premier flanc (15) du contour de type came (14) du levier de serrage (8) est coplanaire à la surface de serrage (11) ou parallèle à ladite surface de serrage (11).
  7. Plaque oscillante selon la revendication 1 ou 2,
    caractérisée en ce que
    le ressort (13) est un ressort à lames serré à une extrémité, lequel, sous précontrainte, porte contre le contour de type came (14) resp. contre les flancs (15, 16) de celui-ci, avec son extrémité libre (17).
  8. Plaque oscillante selon la revendication 1 ou 2,
    caractérisée en ce que
    le ressort (13) (8) est encastré à la face postérieure (7) de la plaque oscillante (2), à distance du levier de serrage (8).
  9. Plaque oscillante selon la revendication 8,
    caractérisée en ce que
    le ressort (13) précontraint, portant contre les flancs (15, 16) du contour de type came (14) du levier de serrage (8) est orienté parallèlement ou presque parallèlement à la face arrière (7) de la plaque oscillante.
  10. Plaque oscillante selon la revendication 9,
    caractérisée en ce que,
    sur la face arrière (7) de la plaque oscillante est prévue une poche (20) pour recevoir l'extrémité (17) du ressort (13) fléchi par le contour de type came (14) du levier de serrage (8).
  11. Plaque oscillante selon l'une des revendications 1 à 6,
    caractérisée en ce que
    le ressort (13) est un ressort à lames monté aux deux extrémités à la face arrière (7) de la plaque oscillante, lequel ressort, sous précontrainte, porte avec sa section située entre les supports (21, 22), contre le contour de type came (14) resp. contre les flancs (15, 16) de celui-ci, un espace libre (23) existant entre lesdits supports (21, 22) pour la réception de la section de ressort fléchie par le contour de type came (14) du levier de serrage (8).
  12. Plaque oscillante selon la revendication 11,
    caractérisée en ce que
    le ressort (13) est bombé dans sa section de butée entre les appuis (21, 22), en direction du levier de serrage (8).
  13. Plaque oscillante (2) d'une ponceuse orbitale manuelle avec des dispositif de serrage disposés sur la face postérieure de ladite plaque oscillante pour fixer de manière amovible une feuille en matière abrasive (6) enroulée avec une section marginale autour d'un côté étroit de ladite plaque oscillante (2) avoisinant, chaque dispositif consistant en un levier de serrage (8) pivotant autour d'un axe (9) parallèle à la face arrière (7) de la plaque oscillante, levier qui présente, sur son côté orienté vers côté étroit de la plaque oscillante, une surface ou un bord de serrage (11) pouvant être serré contre le côté arrière (7) de la plaque oscillante en intercalant la section marginale de la feuille en matière abrasive (6), et qui est soumis, au moins dans sa position de serrage, à l'influence d'un ressort (13) exerçant la force de serrage, et qui, en outre, est pourvu d'un élément d'actionnement (12) à commande manuelle pour le pivotement hors de sa position de serrage dans une position ouverte, soulevant la surface de serrage (11) du côté arrière (7) de la plaque oscillante,
    caractérisée en ce que
    le levier de serrage (8) présente un contour de type came (24), avec une section de sommet située à la plus grande distance de l'axe de pivotement (27), à laquelle font suite un premier flanc (25) et un deuxième flanc (26), en ce que l'axe de pivotement (27) est flexible et forme avec une précontrainte de flexion appropriée vers le côté arrière (7) de la plaque oscillante le ressort et en ce que le levier de serrage (8) prend appui en position de serrage aussi bien avec sa surface de serrage (11) sur le côté arrière (7) de la plaque oscillante qu'avec le premier flanc (25) de son contour de type came (24) sur une butée (28) sur la face arrière (7) de la plaque oscillante, en générant un couple de rotation dans le sens de rotation de serrage et, en position ouverte, prend, seulement avec le deuxième flanc (26) de son contour de type came (24), appui, sécurisé contre les pivotements, sur cette butée (28).
  14. Plaque oscillante selon la revendication 13,
    caractérisée en ce que le contour de type came (24) présente un arrondi convexe qui se fond avec les flancs (25, 26).
EP01127816A 2000-11-25 2001-11-22 Dispositif de serrage pour fixer la feuille abrasive sur une ponceuse orbitale Expired - Lifetime EP1211022B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10058610 2000-11-25
DE10058610A DE10058610B4 (de) 2000-11-25 2000-11-25 Spannvorrichtung an einem Schwingschleifer zum Halten des Schleifmittelblattes

Publications (4)

Publication Number Publication Date
EP1211022A2 EP1211022A2 (fr) 2002-06-05
EP1211022A3 EP1211022A3 (fr) 2004-01-21
EP1211022B1 true EP1211022B1 (fr) 2005-06-08
EP1211022B8 EP1211022B8 (fr) 2005-08-10

Family

ID=7664674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01127816A Expired - Lifetime EP1211022B8 (fr) 2000-11-25 2001-11-22 Dispositif de serrage pour fixer la feuille abrasive sur une ponceuse orbitale

Country Status (4)

Country Link
EP (1) EP1211022B8 (fr)
AT (1) ATE297290T1 (fr)
DE (2) DE10058610B4 (fr)
ES (1) ES2241734T3 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2242545A (en) * 1940-03-27 1941-05-20 Sundstrand Machine Tool Co Rubbing machine
US2712209A (en) * 1950-08-28 1955-07-05 Pillsbury Mills Inc Process of and apparatus for sealing receptacles
US2712206A (en) * 1952-06-16 1955-07-05 Roy J Champayne Rubbing shoe
US2914889A (en) * 1955-07-28 1959-12-01 Sundstrand Corp Clamping device
US2918761A (en) * 1957-04-24 1959-12-29 Sundstrand Corp Rubbing machine
DE2511392C2 (de) * 1975-03-15 1982-09-23 Robert Bosch Gmbh, 7000 Stuttgart Schwingschleifer mit Staubabsaugung
US4030254A (en) * 1976-03-05 1977-06-21 Chicago Pneumatic Tool Company Sanding shoe with removable clamping jaw
DE2832424C2 (de) * 1978-07-24 1982-05-06 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Handschwingschleifmaschine
JPH0215256U (fr) * 1988-07-01 1990-01-30
DE4037266A1 (de) * 1990-11-23 1992-05-27 Bosch Gmbh Robert Vorrichtung zum festspannen von schleifpapier an einem schwingschleifer
DE19800044A1 (de) * 1997-02-27 1998-09-03 Bosch Gmbh Robert Elektrohandwerkzeug, insbesondere Schleifgerät

Also Published As

Publication number Publication date
EP1211022B8 (fr) 2005-08-10
DE10058610B4 (de) 2005-12-08
DE10058610A1 (de) 2002-06-06
EP1211022A2 (fr) 2002-06-05
ES2241734T3 (es) 2005-11-01
ATE297290T1 (de) 2005-06-15
EP1211022A3 (fr) 2004-01-21
DE50106441D1 (de) 2005-07-14

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