EP1866125B1 - Machine-outil manuelle pourvue d'un disque de ponçage - Google Patents

Machine-outil manuelle pourvue d'un disque de ponçage Download PDF

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Publication number
EP1866125B1
EP1866125B1 EP06708036A EP06708036A EP1866125B1 EP 1866125 B1 EP1866125 B1 EP 1866125B1 EP 06708036 A EP06708036 A EP 06708036A EP 06708036 A EP06708036 A EP 06708036A EP 1866125 B1 EP1866125 B1 EP 1866125B1
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EP
European Patent Office
Prior art keywords
power tool
hole
portable power
holes
tool according
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.)
Active
Application number
EP06708036A
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German (de)
English (en)
Other versions
EP1866125A1 (fr
Inventor
Doris Reich
Steffen Tiede
Joerg Dehde
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
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1866125A1 publication Critical patent/EP1866125A1/fr
Application granted granted Critical
Publication of EP1866125B1 publication Critical patent/EP1866125B1/fr
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/03—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor the tool being driven in a combined movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material

Definitions

  • the present invention relates to a hand tool with a sanding plate with holes for dust extraction according to the preamble of claim 1.
  • the thereby formed in the center region of the sanding pad grinding dust in the form of a Schleifstaubpolsters is blown away by means of pressure at a central hole and is to be sucked through the holes arranged radially outside, since the Schleifstaubpolster disturbs the contact of the abrasive sheet with the workpiece to be ground and tends to result To melt warming and stick to the sanding sheet and to prevent efficient sanding.
  • a support plate for tools for surface finishing such as grinding or polishing known, wherein in the support plate, a central, central opening is introduced, which serves to receive a fastening means.
  • the central, central opening penetrates the sanding pad axially.
  • further suction openings are provided, which are at a radial distance are arranged to the central opening and also extend axially through the support plate therethrough.
  • the central opening and the suction openings are connected to each other via a transversely extending, parallel to the underside of the support plate extending connecting channel.
  • the connecting channel extends between diametrically opposite edge regions of the support plate, on which additional, partially overlapped by a plate suction openings are formed.
  • the invention with the features of claim 1 has the advantage that with simple means both in the region of the radial holes under the sanding pad in the region of the outer edge as well as the center accumulating thereunder sanding dust can be continuously sucked so thoroughly and quickly that no central sanding dust pad can form more and no sanding dust is whirled up.
  • the grinding effect is improved and the life of the abrasive sheet is increased because sticking of grinding dust is prevented.
  • the connecting channel is arranged as a downwardly open slot in the bottom of the sanding pad, which is covered by the hook and loop fastener, a central suction in the sanding pad with good adhesion of the sanding sheet can be realized in a simple, cost-effective manner.
  • the sanding pad consists of a skeletal, supporting abrasive plate which carries a cushion of soft elastic material, on the underside of a Velcro layer sits, with a metal ring disc centered in the central opening and axially between the grinding plate and the pad is set, in particular injected, a particularly robust sanding pad construction has been selected.
  • the sanding pad is particularly simple design, connected to an effective, large-scale and central exhaust.
  • the abrasive sheet has a central hole corresponding to the central opening of the sanding disk, the sanding dust can be extracted from the center region of the sanding disk in a particularly effective manner.
  • FIG. 1 shows a side view of the hand tool 10 according to the invention, which is designed as an eccentric grinder.
  • This has a cylindrical housing 12, the handle 14 extends rearwardly and on the underside of a switch button 16 is arranged, which switches a switch 18 on or off by finger pressure of the operator.
  • the circuit of a seated in the housing 12 motor 20 is controlled.
  • the motor shaft 24 rotates with a dust blower 26, an eccentric 28 and a sanding pad 30.
  • the motor 20 is connected by means of electric cable 22 to a voltage source, not shown.
  • the rotating dust blower 26 generates in conjunction with other conventional, not mentioned means on the upper side 46 of the grinding plate 30, a negative pressure and thus at the hole 32, 33 of the sanding pad 30 a suction effect.
  • sanding dust formed on the underside 48 of the sanding pad 30 or under a sanding sheet 52 is sucked in at the lower hole 33 and sucked up to the upper hole 32.
  • this negative pressure leads simultaneously at the center hole 34 in the central region of the bottom 48 of the sanding pad 30 to a targeted extraction, where there accumulating sanding dust together with the above the sanding pad 30 formed Absaugluftstrom 40 through connection channels 58 radially outward to the holes 32, 33 and up there to the blower 42 and the dust container 44 is performed.
  • the sanding pad 30 consists of a sanding plate 36 of flexurally elastic, relatively hard plastic and connected to the sanding plate 36, possibly cast sanding pad 38 made of soft elastic, foamed plastic, which carries a layer of Velcro fabric 50 on its underside 48 for attaching a sanding sheet 52 with velor Backing 53.
  • the abrasive sheet 52 has a center hole 55 and radially closer to the outer edge a plurality of evenly spaced dust holes 54 which coincide with the lower holes 33 and lie on a same pitch circle 56.
  • the holes 32, 33 pass through the sanding pad 30 and also the Velcro fabric 50 axially and thereby form a hole 33 on the underside 48 and a hole 32 offset radially to the outer edge on the upper side 46 of the sanding pad 30.
  • the hole 32 is a partial Blind hole that passes through the sanding pad 30 about 70 to 80%.
  • the hole 33 of the bottom 48 is a partial blind hole, which passes through the sanding pad 30 to about 30 to 40%.
  • the introduced from opposite sides holes 32, 33 penetrate each other axially and radially so that their overcut area defines the actual waist-like hole cross-section between the top and bottom 46, 48.
  • the cross-section of the overlapped area is smaller than that of the holes 32, 33 and ensures a high flow rate of the passing dust air and thus for a good Staubabtransport.
  • FIG. 2 shown bottom view of the grinding plate 30 shows the shape and location of the holes 33 on the bottom 48 and the cross-shaped arrangement of the connecting channels 58, the four of the holes 33 connect to the center hole 34 and secure the Mittenabsaugung.
  • the connecting channels 58 can be covered by a Velcro layer 50, so that the central exhaust only in the region of the mouth in the center hole 34th he follows.
  • the condition is that the Velcro layer 50 has a center hole with approximately congruent, unspecified hole.
  • the abrasive sheet 52 ( Fig. 1 ) has a center hole 55 which is approximately congruent with the center hole 34. Good center suction is also ensured by sanding sheets that have several smaller holes in the center area.
  • FIG. 3 shows a sectional view of the grinding plate 30 and sanding pad 30 with the upper dust hole 32 and the lower dust hole 33, wherein the radial and axial offset between the top 46 and bottom 48 is visible to each other. Further, the center hole 34 on the bottom 48 can be seen, which extends axially in the direction of the top 46 to the grinding plate 36, so substantially only the grinding pad 38 penetrates.
  • the abrasive sheet 52 ( Fig. 4 ) communicates via a center hole 55 and dust holes 54 with the holes 33, 34 as well as the connecting channels 58 and ensures effective dust extraction.
  • a centering hole 37 is arranged, which is aligned with the toothed hub 66 and the central hole 34 on the bottom 48 of the sanding pad. Through the centering hole 37 engages a screw bolt 29 for attaching the sanding pad 30 at the unillustrated driver.
  • annular disc 68 is potted, whose annular hole 79 is aligned with the central hole 34 and a bolt 29 (FIGS. Fig. 1 ) centers and guides and the clamping force transmission when coupling the sanding pad 30 to the power tool 10 secures.
  • FIG. 4 shows a plan view of a usable with the invention abrasive sheet 52 having a plurality of radial dust holes 54 on a common pitch circle 56 and a center hole 55 for the center suction.
  • One of the two flat sides of the sanding sheet 52 carries an abrasive layer, not shown, and the backside a suede layer for bonding to the Velcro layer 50 of the sanding pad 30 for operationally tightening or fixing the sanding sheet 52.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Machine-outil manuelle qui comporte un carter (12) et un disque de ponçage (30) placé sur la face inférieure (13) du carter et pourvu d'une face supérieure (46) orientée vers le carter (12) et d'une face inférieure (48) pourvue d'un dispositif de retenue (50) et destinée à recevoir une feuille de ponçage (52). Ledit disque de ponçage comporte en outre un orifice central (34) traversant les faces supérieure et inférieure (46, 48) et destiné en particulier à faire passer un moyen de fixation (28) en vue du couplage du disque à la machine-outil, ainsi que des trous axiaux traversants (32, 33) qui traversent le disque de ponçage (30) entre ses faces inférieure et supérieure (48, 46) et qui peuvent communiquer avec un canal d'aspiration (42), l'orifice central (34) traversant axialement le disque de ponçage (30). L'objet de la présente invention est d'améliorer la capacité d'aspiration de la poussière de ponçage produite par ladite machine. A cet effet, l'orifice central (34) correspond avec un des trous (32) via un canal de liaison (58) à extension radiale ou transversale situé sur la face inférieure (48), et sert d'orifice d'aspiration.

Claims (10)

  1. Machine-outil à main pourvue d'un boîtier (12) et d'un disque de ponçage (30) disposé sur sa face inférieure (13), avec une face supérieure (46) tournée vers le boîtier (12) et avec une face inférieure (48) avec une fermeture de type velcro (50) pour recevoir une lame de ponçage (52), avec une ouverture centrale (34) traversant la face supérieure et la face inférieure (48, 46), notamment pour l'engagement d'un moyen de fixation (28) en vue de l'accouplement à la machine-outil à main ainsi qu'avec des trous traversants axialement (32, 33), qui traversent le disque de ponçage (30) entre sa face inférieure et sa face supérieure (46, 48) et qui peuvent communiquer avec un canal d'aspiration (42), l'ouverture centrale (34) traversant axialement le disque de ponçage (30) et correspondant avec au moins l'un des trous (32) par le biais d'au moins un canal de liaison (58) s'étendant radialement ou transversalement sur la face inférieure (48), et servant d'ouverture d'aspiration, caractérisée en ce que l'au moins un canal de liaison (58) est disposé sous forme de fente ouverte vers l'extérieur dans la face inférieure (48), laquelle fente est recouverte par la fermeture de type velcro (50).
  2. Machine-outil à main selon la revendication 1, caractérisée en ce que le disque de ponçage (30) se compose d'une plaque de ponçage (36) de support de type squelettique, qui porte un coussin moussé (38), sur la face inférieure duquel est appliquée une couche de matériau de type velcro (50), une rondelle annulaire métallique étant centrée dans l'ouverture centrale (34) et étant fixée, notamment par injection, axialement entre la plaque de ponçage (36) et le coussin (38).
  3. Machine-outil à main selon la revendication 1 ou 2, caractérisée en ce que quatre canaux de liaison (58) débouchent dans l'ouverture centrale (34), s'étendent radialement vers l'extérieur en forme de croix et, de là, débouchent dans quatre des trous (32, 33).
  4. Machine-outil à main selon l'une quelconque des revendications 1 à 3, caractérisée en ce que huit trous (32, 33) espacés uniformément les uns des autres, notamment de forme ovale ou oblongue, sont disposés dans le disque de ponçage (30).
  5. Machine-outil à main selon l'une quelconque des revendications 1 à 4, caractérisée en ce que les trous (33) sur la face inférieure (48) s'étendent radialement plus vers l'extérieur que les trous (32) sur la face supérieure (46) du disque de ponçage (30), et se croisent de manière décalée axialement et radialement, de sorte que leur zone de croisement définisse la section transversale des trous proprement dite entre la face supérieure et la face inférieure (46, 48).
  6. Machine-outil à main selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le trou inférieur (33) s'élargit en forme d'entonnoir dans la transition au trou supérieur (32), avec une surface en biais (62).
  7. Machine-outil à main selon la revendication 5, caractérisée en ce que la section transversale de trou proprement dite est inférieure à celle des trous (32, 33) sur la face supérieure et la face inférieure (46, 48) du disque de ponçage (30).
  8. Machine-outil à main selon l'une quelconque des revendications 1 à 7, caractérisée en ce que le trou (33) s'étend depuis la face inférieure (46) jusqu'à la face supérieure (48) sur jusqu'à 40% de l'épaisseur axiale du disque de ponçage (30) et le trou (32) s'étend depuis la face supérieure (48) jusqu'à la face inférieure (46) sur jusqu'à 80% de l'épaisseur axiale du disque de ponçage (30).
  9. Machine-outil à main selon l'une quelconque des revendications 1 à 8, comprenant une lame de ponçage (52) qui présente un trou central (55) correspondant à l'ouverture centrale (34) du disque de ponçage (30).
  10. Machine-outil à main selon la revendication 1, caractérisée en ce que le canal de liaison (58) a une largeur d'environ 5 mm.
EP06708036A 2005-03-23 2006-02-06 Machine-outil manuelle pourvue d'un disque de ponçage Active EP1866125B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510014045 DE102005014045A1 (de) 2005-03-23 2005-03-23 Handwerkzeugmaschine mit einem Schleifteller
PCT/EP2006/050689 WO2006100153A1 (fr) 2005-03-23 2006-02-06 Machine-outil manuelle pourvue d'un disque de ponçage

Publications (2)

Publication Number Publication Date
EP1866125A1 EP1866125A1 (fr) 2007-12-19
EP1866125B1 true EP1866125B1 (fr) 2012-01-11

Family

ID=36019373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06708036A Active EP1866125B1 (fr) 2005-03-23 2006-02-06 Machine-outil manuelle pourvue d'un disque de ponçage

Country Status (4)

Country Link
EP (1) EP1866125B1 (fr)
CN (1) CN101146650B (fr)
DE (1) DE102005014045A1 (fr)
WO (1) WO2006100153A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006061635A1 (de) 2006-12-27 2008-07-03 Robert Bosch Gmbh Handgeführte Werkzeugmaschine
DE102007007787A1 (de) * 2007-02-16 2008-08-21 Robert Bosch Gmbh Schleifteller für eine Exzenterschleifmaschine
CN101633146B (zh) * 2009-03-03 2012-09-05 熊根稳 清尘磨光机
DE102009054811B4 (de) 2009-12-17 2021-06-17 Robert Bosch Gmbh Handwerkzeugmaschine
DE102010028123A1 (de) 2010-04-22 2011-10-27 Robert Bosch Gmbh Schleiftellervorrichtung für ein handgeführtes Schleifgerät
DE202010017513U1 (de) 2010-12-20 2012-06-01 Robert Bosch Gmbh Schleiftellervorrichtung für ein handgeführtes Schleifgerät
DE102011075586A1 (de) 2011-05-10 2012-11-29 Robert Bosch Gmbh Schleiftellervorrichtung für ein handgeführtes Schleifgerät
DE102011079294A1 (de) 2011-07-18 2013-01-24 Robert Bosch Gmbh Absaugeinrichtung für eine akkubetriebene Handwerkzeugmaschine
DE102013225885A1 (de) * 2013-12-13 2015-06-18 Robert Bosch Gmbh Batteriebetriebener Exzenterschleifer mit einer wiederaufladbaren Batterie
DE102015216615A1 (de) 2015-08-31 2017-03-02 Robert Bosch Gmbh Schleifteller für ein handgeführtes Elektrowerkzeug, sowie Elektrowerkzeugsystem
CN106799686A (zh) * 2015-11-26 2017-06-06 成都九十度工业产品设计有限公司 一种砂纸片粘盘
CN206732729U (zh) * 2017-03-17 2017-12-12 桂林创源金刚石有限公司 一种金刚石异形砂轮及立式加工冷却系统
CN107443229A (zh) * 2017-08-31 2017-12-08 太仓贝斯特机械设备有限公司 一种监控磨削盘的磨削式剥皮机及其工作方法
CN108857725A (zh) * 2018-07-26 2018-11-23 芜湖市黄山松工业地坪新材料有限公司 一种建筑材料打磨机
CN110328589B (zh) * 2019-08-06 2021-11-26 王君 一种通过偏心震动旋转产生负气压的家具平板砂光机
CN112388468B (zh) * 2019-08-16 2022-12-13 博世电动工具（中国）有限公司 手持式工具机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205977A1 (de) * 1992-02-27 1993-09-02 Bosch Gmbh Robert Schleifteller aus mehreren werkstoffschichten
DE9414167U1 (de) * 1994-09-01 1996-01-11 Robert Bosch Gmbh, 70469 Stuttgart Schleifteller
DE19945060B4 (de) * 1999-09-20 2010-12-02 Robert Bosch Gmbh Schleifhandwerkzeugmaschine
DE20016263U1 (de) 2000-09-20 2001-10-18 Kolthoff & Co Stützteller für Werkzeuge zur Oberflächenfeinbearbeitung

Also Published As

Publication number Publication date
WO2006100153A1 (fr) 2006-09-28
DE102005014045A1 (de) 2006-09-28
EP1866125A1 (fr) 2007-12-19
CN101146650A (zh) 2008-03-19
CN101146650B (zh) 2012-11-14

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