EP1182019B1 - Outil électrique avec dispositif pour le serrage rapide d'un outil - Google Patents

Outil électrique avec dispositif pour le serrage rapide d'un outil Download PDF

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Publication number
EP1182019B1
EP1182019B1 EP20010810763 EP01810763A EP1182019B1 EP 1182019 B1 EP1182019 B1 EP 1182019B1 EP 20010810763 EP20010810763 EP 20010810763 EP 01810763 A EP01810763 A EP 01810763A EP 1182019 B1 EP1182019 B1 EP 1182019B1
Authority
EP
European Patent Office
Prior art keywords
clamping
spindle
electric power
power tool
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.)
Expired - Lifetime
Application number
EP20010810763
Other languages
German (de)
English (en)
Other versions
EP1182019A1 (fr
Inventor
Markus Hartmann
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP1182019A1 publication Critical patent/EP1182019A1/fr
Application granted granted Critical
Publication of EP1182019B1 publication Critical patent/EP1182019B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29—Details; Component parts; Accessories
    • B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
    • B27B5/32—Devices for securing circular saw blades to the saw spindle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/16—Longitudinal screw clamp
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T279/00—Chucks or sockets
    • Y10T279/33—Member applies axial force component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/59—Manually releaseable latch type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18888—Reciprocating to or from oscillating
    • Y10T74/1892—Lever and slide
    • Y10T74/1896—Cam connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9377—Mounting of tool about rod-type shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9377—Mounting of tool about rod-type shaft
    • Y10T83/9379—At end of shaft
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9403—Disc type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9461—Resiliently biased connection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9464—For rotary tool

Definitions

  • the invention relates to a power tool according to the preamble of claim 1.
  • Power tools of the type mentioned above have a quick-release device to allow a manual change of a tool.
  • no auxiliary tool is necessary with clamp-type clamping devices in order to relax or tension the clamping device.
  • a known clamping device consist of a threaded rod with a fixedly attached to this clamping flange and a nut.
  • the user is forced to use a fork wrench as an auxiliary tool, for example, to change the tool.
  • the quick-release device can be actuated for example via a clamping lever, for example, to change the tool.
  • Such a power tool is from the DE-C2-4336620 known, with a motor mounted in a housing, which drives a hollow spindle and has a quick-release device for receiving a tool.
  • the quick-clamping device has a clamping spindle which is mounted coaxially displaceably in the hollow spindle and which is secured by an elastic element axially braced.
  • the clamping device can be adjusted between a clamping position and a change position by means of a clamping lever arranged at an end of the clamping spindle facing away from the tool. In the clamping position, the tool is set between the hollow spindle and a clamping flange.
  • an eccentric is arranged, which rests on a bolt on the clamping spindle.
  • An advantage of this known solution is that the tool without auxiliary tools, such as a wrench, can be changed.
  • the user sets the clamping lever in the change position and turns the clamping flange of the clamping spindle and thus can remove the tool, for example, from the clamping device or reposition.
  • the actuating characteristic of the clamping lever affects.
  • the operating force to be applied by the user for the adjusting process is great, since high friction losses occur between the tensioning lever and the clamping spindle.
  • the clamping lever can be in an intermediate position in which the clamping device is neither clamped nor relaxed.
  • a device for rotating disk-shaped tools, such as grinding wheels, circular saw blades or the like.
  • This document discloses a quick-release device for rotating disk-shaped tools, such as grinding wheels, circular saw blades or the like.
  • the tool is clamped between a clamping flange arranged on a rotary spindle and a clamping element, wherein the clamping element is movable in the direction of the axis of rotation of the tool relative to the stationary in this direction clamping flange due to a clamping force.
  • the clamping force is applied by a spring.
  • the present invention has for its object to provide a power tool with a quick-release device that can be braced and relaxed by the user without much operator. Furthermore, the quick release device should clearly be in one of the two states and be economically producible.
  • the clamping lever has a designed as an axle bearing on an annular bearing element formed sliding element
  • the user applied by the operating force is small, since the friction between the clamping spindle and the sliding element is very small.
  • this feature brings a significant reduction in the applied operating force.
  • the sliding element an adjustment possibility to the required clamping force of the elastic element. If a large clamping force is required, for example, it is possible to use costly sliding elements and thus to achieve very good sliding properties.
  • the wear phenomena are lower when using a sliding element, which significantly prolongs the service life even with excessive stress on the power tool.
  • the dimensioning of the contact surface ensures the most compact construction of the quick-release mechanism in the power tool and thus promotes, among other things, its manageability.
  • the deflection is 30 ° to 120 ° to ensure a good control characteristic of the quick release device.
  • the choice of the deflection also determines the stroke between the hollow spindle and clamping spindle. The greater the deflection, the greater the stroke between the clamping position and the change position. However, a large stroke also means a less compact design of the quick release device, since the expansion of the contact surface increases with the deflection. In particular, for example, with hand-held circular saws, a deflection of 80 ° has proven to be optimal.
  • the clamping lever pivots either in the clamping position or in the change position.
  • the exact position of the clamping lever is determined by, for example, a stop surface. If necessary, the end angle ensures pivoting into the change position. The greater the end angle is selected, the more stroke is lost by the backward movement of the clamping spindle against the direction of the tool. On the other hand, the end angle ensures snapping into the change position.
  • the end angle is 10 ° to ensure optimum snap in a compact design yet.
  • the sliding element is advantageously formed by a bearing axis parallel to the axis of rotation bearing element with a radius to ensure an economical and at the same time suitable for high clamping forces solution.
  • Bearing elements are extremely high load and are characterized by low friction and a long service life. In addition, their production is economical, since there is a great need for such elements.
  • the radius corresponds to 0.2 to 0.6 times, in particular 0.4 times, the distance.
  • Fig. 1 and 2 is a power tool according to the invention with a motor mounted in a housing 1, not shown, which drives a hollow spindle 2 and a quick-release device for receiving a tool 3 in cross section.
  • the quick-clamping device has a clamping spindle 4, which is mounted coaxially displaceably in the hollow spindle 2 and which is axially braced by an elastic element 5.
  • the elastic element 5 is mounted with one end in a arranged on the tool side end facing away from the hollow spindle 2 tap hole and is held at the opposite end by a, attached to the clamping spindle 4 flange 13.
  • the sliding element 8 has a radial distance a from a rotation axis 9 of the tensioning lever 6. In this position, the clamping flange 7 can be rotated without the aid of an auxiliary tool to replace, for example, the tool 3 mounted between clamping flange 7 and hollow spindle 2.
  • the tensioning lever 6 is pressed against a stop surface 12 of the housing 1.
  • Fig. 2 represents the tensioning lever 6 in a position in which it is in contact with the clamping spindle 4, but still exerts no force on the elastic element 5.
  • the longitudinal axis of the clamping spindle 4 encloses with the radial distance a between the rotation axis 9 and the sliding member 8 an angle ⁇ , which is about 80 °.
  • a contact surface 11 has an extension K in the pivoting direction which corresponds approximately to the sin ( ⁇ ) -fold of the distance a.

Landscapes

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

Claims (8)

  1. Appareil électrique, en particulier scies circulaires et analogues, comprenant un moteur, qui est monté dans un carter (1) et entraîne une broche creuse (2), et un dispositif de serrage rapide pour recevoir un outil (3), le dispositif de serrage rapide comprenant une broche de serrage (4), qui est montée à coulissement coaxial dans la broche creuse (2), peut être bloquée axialement par l'intermédiaire d'un élément élastique (5) et est déplaçable au moyen d'un levier de blocage (6), lequel est disposé à une extrémité de la broche de serrage (4) opposée au côté outil et comporte à une extrémité un axe de rotation (9), et entre une position bloquée, où l'outil (3) est solidarisé en rotation avec la broche creuse (2), et une position de remplacement, et l'outil (3) étant monté avec une possibilité de blocage entre une bride de serrage (7) apte à être plaquée contre l'extrémité de la broche de serrage (4) située côté outil et la broche creuse (2), le levier de blocage (6) comportant à une distance radiale (a) un élément glissant (8) qui, par pivotement du levier de blocage (6) autour de l'axe de rotation (9) selon un débattement (α) par rapport à l'axe longitudinal de la broche de serrage (4), peut être amené en contact avec l'extrémité de la broche de serrage (4) opposée au côté outil, la broche de serrage (4) comportant une surface de contact (11) pourvue, dans la direction de pivotement, d'une extension (K) qui correspond au moins à sin(α) fois la distance (a), caractérisé en ce que l'élément glissant (8) est formé par un élément d'appui annulaire disposé sur un axe.
  2. Appareil électrique selon la revendication 1, caractérisé en ce que le débattement (α) est de 30° à 120°.
  3. Appareil électrique selon la revendication 2, caractérisé en ce que le débattement (α) est de 80°.
  4. Appareil électrique selon une des revendications 1 à 3, caractérisé en ce que, dans la position de remplacement, l'angle de fin de course (β) formé par la distance (a) et l'axe longitudinal est compris entre 5° et 30°.
  5. Appareil électrique selon la revendication 4, caractérisé en ce que l'angle de fin de course (β) est de 10°.
  6. Appareil électrique selon une des revendications 1 à 5, caractérisé en ce que l'élément d'appui annulaire est parallèle axialement à l'axe de rotation (9) et possède un rayon (R).
  7. Appareil électrique selon la revendication 6, caractérisé en ce que le rayon (R) correspond à 0,2 à 0,6 fois la distance (a).
  8. Appareil électrique selon la revendication 7, caractérisé en ce que le rayon (R) correspond à 0,4 fois la distance (a).
EP20010810763 2000-08-17 2001-08-07 Outil électrique avec dispositif pour le serrage rapide d'un outil Expired - Lifetime EP1182019B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10040330 2000-08-17
DE2000140330 DE10040330A1 (de) 2000-08-17 2000-08-17 Elektrowerkzeug mit Spanneinrichtung

Publications (2)

Publication Number Publication Date
EP1182019A1 EP1182019A1 (fr) 2002-02-27
EP1182019B1 true EP1182019B1 (fr) 2009-07-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010810763 Expired - Lifetime EP1182019B1 (fr) 2000-08-17 2001-08-07 Outil électrique avec dispositif pour le serrage rapide d'un outil

Country Status (4)

Country Link
US (1) US6953197B2 (fr)
EP (1) EP1182019B1 (fr)
JP (1) JP4827336B2 (fr)
DE (2) DE10040330A1 (fr)

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DE102004020982A1 (de) * 2004-04-23 2005-11-17 C. & E. Fein Gmbh Kraftgetriebenes Handwerkzeug mit Spanneinrichtung für ein Werkzeug
US8117542B2 (en) * 2004-08-16 2012-02-14 Microsoft Corporation User interface for displaying selectable software functionality controls that are contextually relevant to a selected object
US9168188B2 (en) 2007-11-13 2015-10-27 Orthopediatrics Corporation Cast removal system
DE202009001440U1 (de) * 2009-01-30 2010-07-01 C. & E. Fein Gmbh Kraftgetriebenes Handwerkzeug mit Spanneinrichtung für ein Werkzeug
US8454028B1 (en) * 2009-03-25 2013-06-04 Honda Motor Co., Ltd. Fixture for holding a chamfering tool during cutting insert preset operation
US20110039482A1 (en) * 2009-07-29 2011-02-17 Terry Timmons Grinder
ITTO20091046A1 (it) * 2009-12-28 2011-06-29 Cnh Italia Spa Serratura con un attuatore a distanza per un pannello di un veicolo
DE102010064371B4 (de) * 2010-12-30 2021-12-16 Robert Bosch Gmbh Handwerkzeugmaschinenspannvorrichtung mit Schaltelement
DE102011003100A1 (de) * 2011-01-25 2012-07-26 Robert Bosch Gmbh Werkzeugspannvorrichtung
DE102011003098A1 (de) * 2011-01-25 2012-07-26 Robert Bosch Gmbh Werkzeugspannvorrichtung
US9393711B2 (en) 2011-04-11 2016-07-19 Milwaukee Electric Tool Corporation Hand-held knockout punch driver
CN203245254U (zh) 2011-08-22 2013-10-23 密尔沃基电动工具公司 起模螺柱连接器
JP5746645B2 (ja) 2012-02-03 2015-07-08 株式会社マキタ 作業工具
US9186788B2 (en) 2012-11-15 2015-11-17 Techtronic Power Tools Technology Limited Lockout mechanism
US9339927B2 (en) * 2012-12-29 2016-05-17 Chervon (Hk) Limited Accessory clamping mechanism and power tool having the same
JP2014131824A (ja) * 2013-01-07 2014-07-17 Makita Corp 作業工具
EP3345728B1 (fr) * 2015-08-31 2020-11-18 Positec Power Tools (Suzhou) Co., Ltd Outil portatif et son dispositif de serrage
US20170259348A1 (en) * 2016-03-09 2017-09-14 Ac (Macao Commercial Offshore) Limited Toolless blade release mechanism for a power tool
DE102016220362A1 (de) * 2016-10-18 2018-04-19 Robert Bosch Gmbh Schnellspannvorrichtung für eine zumindest eine rotierend antreibbare Abtriebswelle aufweisende tragbare Werkzeugmaschine, insbesondere Winkelschleifmaschine
CN109986513A (zh) * 2017-12-29 2019-07-09 宝时得科技（中国）有限公司 动力工具
JP7096032B2 (ja) 2018-03-28 2022-07-05 株式会社マキタ マルチツール
US11052475B2 (en) * 2018-11-27 2021-07-06 Zhejiang Burley Tools Co., Ltd. Rapid replacing structure for multi-purpose saw
US11833598B2 (en) * 2018-12-14 2023-12-05 Fisher Controls International Llc Stabilized cutting tool assemblies
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
US11667051B2 (en) * 2020-09-23 2023-06-06 Wilson Tool International Inc. Punch assemblies and toolless systems thereof for tip retention and release

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DE3523746A1 (de) 1985-07-03 1987-01-08 Metabowerke Kg Schnellspannvorrichtung fuer rotierende scheibenfoermige werkzeuge
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Also Published As

Publication number Publication date
US6953197B2 (en) 2005-10-11
US20020035882A1 (en) 2002-03-28
JP2002126944A (ja) 2002-05-08
DE10040330A1 (de) 2002-02-28
DE50114985D1 (de) 2009-08-27
JP4827336B2 (ja) 2011-11-30
EP1182019A1 (fr) 2002-02-27

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