EP1684944B1 - Dispositif de raccordement d'outil destine a un outil insert et pourvu d'un nabe au moins sensiblement en forme de disque - Google Patents

Dispositif de raccordement d'outil destine a un outil insert et pourvu d'un nabe au moins sensiblement en forme de disque Download PDF

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Publication number
EP1684944B1
EP1684944B1 EP04786843A EP04786843A EP1684944B1 EP 1684944 B1 EP1684944 B1 EP 1684944B1 EP 04786843 A EP04786843 A EP 04786843A EP 04786843 A EP04786843 A EP 04786843A EP 1684944 B1 EP1684944 B1 EP 1684944B1
Authority
EP
European Patent Office
Prior art keywords
receiving device
tool receiving
drive shaft
tool
carry
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 - Fee Related
Application number
EP04786843A
Other languages
German (de)
English (en)
Other versions
EP1684944A1 (fr
Inventor
Ernst Kraenzler
Peter Stierle
Albrecht Hofmann
Juergen Wiker
Harald Krondorfer
Markus Heckmann
Joachim Schadow
Sinisa Andrasic
Thomas Schomisch
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 EP1684944A1 publication Critical patent/EP1684944A1/fr
Application granted granted Critical
Publication of EP1684944B1 publication Critical patent/EP1684944B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29Details; Component parts; Accessories
    • B27B5/30Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
    • B27B5/32Devices for securing circular saw blades to the saw spindle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/06Making machine elements axles or shafts
    • B21K1/12Making machine elements axles or shafts of specially-shaped cross-section
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/022Spindle-locking devices, e.g. for mounting or removing the tool
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028Angle tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B45/00Means for securing grinding wheels on rotary arbors
    • B24B45/006Quick mount and release means for disc-like wheels, e.g. on power tools

Definitions

  • the invention is particularly based on a tool receiving device according to the preamble of claim 1.
  • a generic tool receiving device of an angle grinder for an insert tool with a disk-shaped hub comprises a drive shaft and a driving device, wherein the insert tool via three movable against a spring element locking elements of the driving device with the driving device is operatively connected, which engages in the operating position of the insert tool and fixes the insert tool in the circumferential direction positively.
  • the drive shaft is connected non-positively in the circumferential direction with a driving flange of the driving device.
  • the invention relates to a tool receiving device for an insert tool having an at least substantially disc-shaped hub, in particular for a hand-held angle grinder or a circular saw, with a drive shaft and a driving device, the at least one movable against a spring element latching element for positive fixing of the insert tool in the circumferential direction having.
  • the drive shaft has at least one non-machined molded positive-locking element for the positive connection in the circumferential direction with a means of the driving device for driving torque transmission.
  • It can be structurally simple and inexpensive connection between the drive shaft, the means of the driving device, in particular a driving flange, and the insert tool can be achieved via the high torque can be transmitted, in particular by cost large transmission surfaces can be achieved without at least significant material weaknesses.
  • the solution according to the invention is thus particularly suitable for machines with high performance, in particular for network machines.
  • the drive shaft can in principle be formed by a motor shaft, an output shaft of a transmission, in particular an angular gear, or by a subsequent to an output shaft of a transmission in the direction of the insert tool shaft.
  • the interlocking element may be formed by an integrally formed groove in which an additional, for example, tooth-like transmission means may be attached, whereby this can be targeted specifically with regard to its material properties on the existing loads, or the interlocking element can advantageously directly for contacting with the means of Drive device or the driving flange can be used, which additional components, assembly costs and costs can be saved.
  • the positive-locking element is formed by a pressing process on the drive shaft, this can advantageously be realized cost-effectively with close tolerances.
  • a pressing process other methods that appear appropriate to a person skilled in the art are also conceivable for machining the positive-locking element without machining on the drive shaft, such as, for example, a casting method, etc.
  • the interlocking element has a greater length extension in the axial direction of the drive shaft than height, which in particular space-saving large transfer surfaces and associated small surface pressures and a small wear can be achieved.
  • the drive shaft has at least three interlocking elements, an advantageously uniform distribution of forces can be achieved with an overall large transfer surface.
  • only one or two positive locking elements are conceivable.
  • the means of the driving device at its inner circumference at least one forming a positive locking element continuous axial groove, whereby a particularly cost-effective production of the agent can be achieved, in particular if it is formed by a sintered part.
  • the means of the driving device is supported via a spacer element on the drive shaft. Transitions between the interlocking element and adjacent areas caused by a production process can advantageously be bridged by means of the spacer element and costly contours corresponding to the transitions at the center of the entrainment device can be avoided.
  • the spacer element is advantageously formed by a sleeve which is easy to assemble and by means of the structurally simple uniform support can be realized.
  • the tool receiving device comprises a leaf spring unit which has at least one free spring web extending at least partially in the circumferential direction, whereby a space-saving leaf spring unit with a contour which can be produced easily and with an advantageous force transmission can be achieved cost-effectively.
  • free spring bar should in this context a spring bar with at least one free end to be understood.
  • Fig. 1 shows an angle grinder 32 from above with a mounted in a housing 34, not shown electric motor.
  • the angle grinding machine 32 can be guided via a first, in the housing 34 on a side facing away from an insert tool 14, extending in the longitudinal direction handle 36 and a second attached to a transmission housing 38 in the field of insert tool 14, transversely to the longitudinal direction extending handle 40.
  • the electric motor via a not-shown angle gear and a drive shaft 16 and a driving device 12 comprehensive tool holding device, the insert tool 14 is driven in rotation (Fig. 2).
  • the drive shaft 16 formed by an output shaft of the angular gear has at its free end three machined via an extrusion process molded positively locking elements 100 for positive connection in the circumferential direction 50, 52 with a contact surface 30 for the insert tool 14 forming driving flange 10 of the driving device 12 for driving torque transmission.
  • an internal thread 136 is introduced into the drive shaft 16, the drive shaft 16 is reworked by turning, case hardened and then ground in certain areas, especially in storage areas.
  • the interlocking elements 100 have a greater length extension 102 in the axial direction 64 of the drive shaft 16 than height 104 and are formed with a rectangular cross-sectional area.
  • the form-fitting elements 100 of the drive shaft 16 engage directly on the driving flange 10 for direct drive torque transmission into the form-fitting elements 106 formed on the inner periphery of the driving flange 10 formed by a sintered part, which are formed by continuous axial grooves (FIGS. 2 and 3).
  • the driving flange 10 is centered by the radially outwardly facing outer surfaces of the form-locking elements 100.
  • the driving flange 10 is supported on a collar 130 of the drive shaft 16 via a spacer element 108 formed by a sleeve.
  • the spacer element 108 covers a production-related transition 132 between a designated by the interlocking elements 100 area at the free end of the drive shaft 16 and an adjacent in the axial direction 64 area.
  • a collar 26 is formed on a side facing the insert tool 14, over which the insert tool 14 is radially centered with its center hole 46 in the mounted state.
  • three mold elements 22 are arranged, which are formed by radially outwardly extending projections.
  • the with the Bund 26 integrally formed mold elements 22 are arranged distributed uniformly over an outer circumference of the collar 26 and have in the axial direction 54, 64 a distance 28 to the contact surface 30. With its end facing the insert tool 14, the collar 26 projects beyond the shaped elements 22 in the axial direction 54.
  • a metal plate 48 On a side facing away from the insert tool 14 of the driving flange 10 is a metal plate 48 with three circumferentially 50, 52 evenly distributed, integrally formed, extending in the axial direction 54 clamping hooks 56 for axially fixing the insert tool 14.
  • the clamping hooks 56 are formed in a bending operation on the metal plate 48.
  • the driving flange 10 When mounting the driving device 12, the driving flange 10, a leaf spring unit 58 and the metal plate 48 are pre-assembled.
  • the leaf spring unit 58 is pushed onto a collar of the driving flange 10, which faces away from the insert tool 14 direction.
  • the clamping hooks 56 of the sheet-metal plate 48 which at its free end have a hook-shaped extension with an oblique surface 94 pointing in the circumferential direction 52, are guided in the axial direction 54 through recesses 60 of the driving flange 10 (FIGS. 2 and 3).
  • the leaf spring unit 58 By compressing and rotating the metal plate 48 and the driving flange 10 against each other, the leaf spring unit 58 is biased and the metal plate 48 and the driving flange 10 are positively connected in the axial direction 54, 64 (FIGS. 2 and 3).
  • the metal plate 48 is then, loaded by the leaf spring unit 58, on the contact surface 30 of the driving flange 10 supported over edges of the hook-shaped extensions which point axially in the direction away from the insert tool 14 direction.
  • the leaf spring unit 58 has three identical, in the circumferential direction 50, 52 extending free spring webs 110, which are each formed via a radially inwardly extending connecting web 112 integral with a retaining ring 114 (Fig. 4).
  • the connecting web 112 and the spring bar 110 are formed substantially T-shaped, wherein the spring bar 110 is arcuately formed with two free ends and the connecting web 112 in the middle of the spring bar 110 connects to the same.
  • the spring bar 110 has a decreasing width 120 towards its free ends 116, 118 and has a thickness 126 of approximately 0.9 mm.
  • the leaf spring unit 58 rests with its retaining ring 114 on the driving flange 10, wherein the spring webs 110 are each bent starting from the connecting web 112 in the direction of their free ends 116, 118 in the direction away from the driving flange 10 and are supported on the tabs 68 of the metal plate 48 , To avoid a linear support formed integrally formed bearing surfaces 122, 124 are formed on the free ends 116, 118 of flats or the free ends 116, 118 of the spring bars 110 in the direction of the driving flange 10 bent slightly.
  • radially outwardly extending coding means 128 are formed on the outer circumference of the retaining ring 114 next to the connecting webs 112, which correspond with the clamping hooks 56 and bolts 20 of the driving device 12 during assembly.
  • the metal plate 48 can be performed in a twisted position with their clamping hooks 56 through recesses of the leaf spring unit 58, but then a drive plate 96 with its bolts 20 due to the coding means 128 are no longer passed through the leaf spring unit 58.
  • the leaf spring unit 58 and the driving flange 10 are pre-assembled, is formed by a helical compression spring element 18 and the drive plate 96 with its three evenly distributed over the circumference, extending in the axial direction 54 bolt 20 the drive shaft 16 attached (Fig. 2).
  • the preassembled assembly consisting of the metal plate 48, the leaf spring unit 58 and the driving flange 10, mounted on the drive shaft 16.
  • the bolts 20 are guided during assembly by integrally formed on the circumference of the metal plate 48 tabs 68, the holes 70, and located in the driving flange 10 through holes 72 and engage in the assembled state through the through holes 72.
  • the interlocking elements 100 on the drive shaft 16 are in introduced the positive locking elements 106 of the driving flange 10.
  • radially inwardly extending formations 134 are introduced into grooves 62 introduced on the outer circumference of the drive flange 10. The metal plate 48 and the drive plate 96 are secured to each other via the bolts 20 against rotation.
  • the driving device 12 is secured to the drive shaft 16 with a screw 74.
  • the insertion tool 14 formed by a cutting disk has a substantially disk-shaped sheet metal hub 42 formed by a separate component, which has three uniformly distributed, cup-shaped recesses 76 extending in the axial direction 54 in the circumferential direction 50, 52, whose diameters are slightly larger than The diameter of the bolts 20. Further, the sheet metal hub 42 has three evenly distributed in the circumferential direction 50, 52, extending in the circumferential direction 50, 52 recesses 78, each having a narrow and a wide range 80, 82.
  • the diameter of the centering bore 46 of the sheet metal hub 42 is selected so that the insert tool 14 can be clamped with a conventional clamping system with a clamping flange and a spindle nut on a conventional angle grinder. It ensures a so-called backward compatibility.
  • the sheet metal hub 42 of the insertion tool 14 has three mold elements 24 which are distributed in the circumferential direction 50, 52 uniformly over the circumference of the centering bore 46 (FIG. 2).
  • the mold elements 24 are formed here by recesses.
  • the mold elements 22 of the tool receiving device and the mold elements 24 of the insert tool 14 are matched, corresponding mold elements to simplify installation of the insert tool 14. Furthermore, the corresponding mold elements 22, 24 form a coding means for avoiding assembly of an impermissible insert tool For this purpose, the corresponding form elements 22, 24 with respect to a diameter of the insert tool 14 matched to each other, so that use tools for use in high-speed machines have a wide shape element or a wide coding and use tools for use in machines with low speed a narrow form element or a narrow coding.
  • the sheet metal hub 42 of the insert tool 14 is connected via a rivet connection firmly with an abrasive and pressed and is executed by a pointing in the axial direction 64 44 formation cup-shaped.
  • the insert tool 14 When mounting the insert tool 14, the insert tool 14 is pushed with its center hole 46 on the mold elements 22 in the axial direction 54 superior part of the collar 26 and pre-centered radially. The insert tool 14 comes here to contact surfaces 84 of the mold elements 22 to lie. Twisting the insert tool 14 in the circumferential direction 50, 52 brings the mold elements 22, 24 to cover. The insert tool 14 or the sheet metal hub 42 can then slide in the axial direction 64 in the direction of the contact surface 30, and the sheet metal hub 42 comes to rest on the bolt 20.
  • the sheet metal hub 42 can be rotated counter to a drive direction 98.
  • the rotation of the sheet metal hub 42 causes the sheet metal hub 42 to slide with its edge of the centering bore 46 into the distance 28 between the shaped elements 22 and the abutment surface 30 of the driving flange 10 and can be secured against falling down by the shaped elements 22 in the axial direction.
  • the rotation of the sheet metal hub 42 causes the hook-shaped extensions to be displaced into the arcuate, narrow regions 80 of the recesses 78 of the sheet metal hub 42.
  • the metal plate 48 is moved by the clamping hooks 56 by non-illustrated inclined surfaces axially against the pressure of the leaf spring unit 58 in the direction 54 until bearing surfaces of the hook-shaped projections in the arcuate, narrow areas 80 laterally adjacent to the recesses 78 of the sheet metal hub 42 come to rest.
  • arcuate grooves 66 are introduced into the contact surface 30 of the driving flange 10, on the lying on the support surface 30, unwanted particles can be conveyed to the outside of the driving device 12.
  • a release button 92 is pressed in the axial direction 64.
  • the release button 92 pushes the drive plate 96 in the axial direction 64, and the formations 86 of the drive plate 96 come with the lock pockets 88 into engagement.
  • the drive shaft 16 is locked.
  • the bolts 20 are in this case with the recesses 76 of the sheet metal hub 42 disengaged, and the sheet metal hub 42 can be rotated in the circumferential direction 52 until the clamping hooks 56 can slide through the recesses 78.
  • the mold elements 22, 24 in this case reach into a corresponding position, and the sheet metal hub 42 can be removed in the axial direction 54.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (12)

  1. Dispositif de réception d'un outil amovible (14) comportant un moyeu (42) au moins pratiquement en forme de disque, notamment pour une meuleuse d'angle, portative, (32) ou une scie circulaire, portative, comportant un arbre d'entraînement (16) et un dispositif d'entraînement (12) avec au moins un élément d'encliquetage (20) mobile contre un élément à ressort (18) pour le blocage de l'outil amovible (14) dans la direction périphérique (50, 52) par une liaison par la forme,
    caractérisé en ce que
    l'arbre d'entraînement (16) comporte au moins un élément de liaison par la forme (100) réalisé par un usinage sans enlèvement de copeaux, pour une liaison par la forme dans la direction périphérique (50, 52) avec un moyen du dispositif d'entraînement (12), pour transmettre le couple moteur.
  2. Dispositif de réception d'outil selon la revendication 1,
    caractérisé en ce que
    l'élément de liaison par la forme (100) est réalisé par une opération à la presse sur l'arbre d'entraînement (16).
  3. Dispositif de réception d'outil selon l'une des revendications précédentes,
    caractérisé en ce que
    l'élément de liaison par la forme (100) a une longueur (102) plus grande dans la direction axiale (64) de l'arbre d'entraînement (16) que sa hauteur (104).
  4. Dispositif de réception d'outil selon l'une des revendications précédentes,
    caractérisé en ce que
    l'arbre d'entraînement (16) comporte au moins trois éléments de liaison par la forme (100).
  5. Dispositif de réception d'outil selon l'une des revendications précédentes,
    caractérisé en ce que
    le moyen du dispositif d'entraînement (12) à sa périphérie intérieure comporte au moins une raînure axiale continue formant un élément de liaison par la forme (106).
  6. Dispositif de réception d'outil selon l'une des revendications précédentes,
    caractérisé en ce que
    le moyen du dispositif d'entraînement (12) est une pièce frittée.
  7. Dispositif de réception d'outil selon l'une des revendications précédentes,
    caractérisé en ce que
    le moyen du dispositif d'entraînement (12) est formé par une surface d'appui (30) de la bride d'entraînement (10) pour l'outil amovible (14).
  8. Dispositif de réception d'outil selon l'une des revendications précédentes,
    caractérisé en ce que
    le moyen du dispositif d'entraînement (12) est soutenu sur l'arbre d'entraînement (16) par l'intermédiaire d'un élément d'écartement (108).
  9. Dispositif de réception d'outil selon la revendication 8,
    caractérisé en ce que
    l'élément d'écartement (108) est un manchon.
  10. Dispositif de réception d'outil selon l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif d'entraînement (12) comprend une unité à ressort-lame (58) ayant une branche élastique (110) s'étendant librement au moins en partie dans la direction périphérique (50, 52), branche par laquelle l'outil amovible (14) est bloqué dans la direction axiale (64) par une force élastique.
  11. Meuleuse d'angle comportant un dispositif de réception d'outil selon l'une des revendications précédentes.
  12. Scie circulaire portative comportant un dispositif d'entraînement d'outil selon l'une des revendications précédentes.
EP04786843A 2003-11-08 2004-09-24 Dispositif de raccordement d'outil destine a un outil insert et pourvu d'un nabe au moins sensiblement en forme de disque Expired - Fee Related EP1684944B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10352291A DE10352291A1 (de) 2003-11-08 2003-11-08 Werkzeugaufnahmevorrichtung für ein Einsatzwerkzeug mit einer zumindest im Wesentlichen scheibenförmigen Nabe
PCT/DE2004/002127 WO2005049275A1 (fr) 2003-11-08 2004-09-24 Dispositif de raccordement d'outil destine a un outil insert et pourvu d'un nabe au moins sensiblement en forme de disque

Publications (2)

Publication Number Publication Date
EP1684944A1 EP1684944A1 (fr) 2006-08-02
EP1684944B1 true EP1684944B1 (fr) 2008-01-30

Family

ID=34530181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04786843A Expired - Fee Related EP1684944B1 (fr) 2003-11-08 2004-09-24 Dispositif de raccordement d'outil destine a un outil insert et pourvu d'un nabe au moins sensiblement en forme de disque

Country Status (5)

Country Link
US (1) US7497766B2 (fr)
EP (1) EP1684944B1 (fr)
CN (1) CN1878635A (fr)
DE (2) DE10352291A1 (fr)
WO (1) WO2005049275A1 (fr)

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EP2598285A4 (fr) * 2010-07-29 2013-12-25 Myles Graham Kelly Mécanisme de blocage de plaque
DE102011075228A1 (de) * 2011-05-04 2012-11-08 Robert Bosch Gmbh Werkzeugspannvorrichtung
US10399218B2 (en) * 2011-12-19 2019-09-03 Carine Elen Motorized scrubbing, buffing, and polishing tool
US9408513B2 (en) * 2011-12-19 2016-08-09 Carine Elen Motorized scrubbing, buffing, and polishing tool
DE102011089729A1 (de) * 2011-12-23 2013-06-27 Robert Bosch Gmbh Werkzeugmaschine
JP5746645B2 (ja) 2012-02-03 2015-07-08 株式会社マキタ 作業工具
US8997618B1 (en) * 2013-01-23 2015-04-07 Marjan Majcen Quick release blade lock assembly
DE202013006900U1 (de) 2013-08-01 2014-11-03 C. & E. Fein Gmbh Werkzeugmaschine
DE202013006920U1 (de) 2013-08-01 2014-11-03 C. & E. Fein Gmbh Werkzeugeinrichtung
NO2884309T3 (fr) 2013-08-01 2018-09-08
EP3500402B1 (fr) * 2016-08-22 2021-07-28 Robert Bosch GmbH Dispositif de serrage rapide pour une machine-outil portative, en particulier pour une meuleuse d'angle
JP7096032B2 (ja) 2018-03-28 2022-07-05 株式会社マキタ マルチツール
US11660690B2 (en) 2019-11-28 2023-05-30 Makita Corporation Power tool
US11590593B2 (en) 2019-11-28 2023-02-28 Makita Corporation Power tool
JP7422538B2 (ja) 2019-12-26 2024-01-26 株式会社マキタ 作業工具
JP7330914B2 (ja) 2020-02-13 2023-08-22 株式会社マキタ 振動工具
CN111376144B (zh) * 2020-04-30 2021-11-19 云和县达祥凯机械设计工作室 一种用于轴块的打磨清洁机构
CN113997172A (zh) * 2021-11-24 2022-02-01 汪文志 一种方便操作的角向磨光机
CN114670121B (zh) * 2022-03-29 2023-06-20 山东交通学院 一种机械加工组合式磨料磨具

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Also Published As

Publication number Publication date
DE502004006112D1 (de) 2008-03-20
DE10352291A1 (de) 2005-06-02
CN1878635A (zh) 2006-12-13
WO2005049275A1 (fr) 2005-06-02
US7497766B2 (en) 2009-03-03
US20070082590A1 (en) 2007-04-12
EP1684944A1 (fr) 2006-08-02

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