EP1497081B1 - Machine-outil manuelle a arret de rotation de broche - Google Patents

Machine-outil manuelle a arret de rotation de broche Download PDF

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Publication number
EP1497081B1
EP1497081B1 EP02774318A EP02774318A EP1497081B1 EP 1497081 B1 EP1497081 B1 EP 1497081B1 EP 02774318 A EP02774318 A EP 02774318A EP 02774318 A EP02774318 A EP 02774318A EP 1497081 B1 EP1497081 B1 EP 1497081B1
Authority
EP
European Patent Office
Prior art keywords
machine tool
hand
stop pin
housing
operated machine
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.)
Revoked
Application number
EP02774318A
Other languages
German (de)
English (en)
Other versions
EP1497081A1 (fr
Inventor
Andreas Wolf
Sinisa Andrasic
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7964882&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1497081(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1497081A1 publication Critical patent/EP1497081A1/fr
Application granted granted Critical
Publication of EP1497081B1 publication Critical patent/EP1497081B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • B27B5/38—Devices for braking the circular saw blade or the saw spindle; Devices for damping vibrations of the circular saw blade, e.g. silencing
    • 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
    • B24B23/022—Spindle-locking devices, e.g. for mounting or removing the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • 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
    • Y10T403/598—Transversely sliding pin

Definitions

  • the present invention is based on a handheld power tool with spindle stop according to the preamble of claim 1.
  • An example of such a handheld power tool is shown in DE-A-2816398.
  • the well-known hand tool machines with spindle stop include angle grinders and circular saws. In these machines, the output shaft must be prevented from rotating for tool change so that the respective locking screw holding the saw blade or the grinding wheel on the output shaft can be released.
  • the Spindelstop supplements takes on the torque occurring when loosening the nut.
  • spindle stop usually serve cylindrical locking pin, which are displaced in the longitudinal direction and thereby engage positively with its end in a rotatably coupled to the output shaft part or directly into the output shaft.
  • the locking pins pass longitudinally displaceably mounted the housing of the power tool.
  • the housing is subject to high wear in the passage region of the locking bolt, for example by operating the spindle stop when the output shaft is running or when the release torque of the saw blades or the grinding wheels is excessively high.
  • the guide bush to the longitudinal guidance of the locking pin in the transmission housing can solve and expand. As a result, along the locking pin gear grease off or dust occur, so that the outside of the housing dirty and the moving parts are insufficiently lubricated inside the housing due to lack of fat.
  • the locking pin carries approximately centrally an O-ring in an annular groove, the tightness between the through hole or sliding guide and the locking pin is secured even at maximum load of the locking pin during operation of the spindle stop.
  • the locking pin carries a collar-like, radial widening in front of his form-fit tangible in the output shaft area, which rests in the rest position of the locking pin frontally on the wall of the transmission housing, an axial seal is provided, the outlet of lubricant to the outside of the housing prevented.
  • the spindle stop is easy to install and disassemble and easy to operate.
  • the locking pin carries a spring between the serving as a key cap and the portion of the stepped bore with the larger diameter, the locking pin is reliably held in its rest position and the collar-like widening in abutment against the inner wall of the housing in its sealing position.
  • the neck of the locking pin has a locking groove and serving as a key cap has an inner locking cylinder
  • the mounting of the cap on the locking pin is particularly simple and robust.
  • FIG. 1 shows a partial longitudinal section of a hand tool machine designed as an angle grinder 10.
  • a housing 12 carries an electric motor 14 with a motor shaft 16, an angle gear 18 in its front region.
  • the angle gear 18 consists of a grinding spindle 20, which with its free end down from the housing 12 protrudes. This is a unspecified thread arranged on a nut 24 is screwed, which has a previously with her unspecified bore over the free end 19 of the grinding spindle set grinding wheel 22 holds.
  • the grinding wheel 22 is clamped axially between a collar 23 of the output shaft 20 and the nut 24.
  • the angle gear 18 consists of a small bevel pinion 28 which is rotatably disposed at the end of the motor shaft 16 and a large bevel gear 30.
  • the bevel pinion 28 engages in the bevel gear 30 which is rotatably fixed to the output shaft 20.
  • the bevel gear 30 has on its upper side at least one recesses 32 into which a locking pin 36 fits, which belongs to a spindle stop 34.
  • the locking pin 36 is mounted longitudinally displaceable in a sliding guide 35 by passing through the wall of the housing 12 projecting outwardly, wherein it projects with a larger area into the interior of the housing 12.
  • the sliding guide 35 is designed as a stepped bore 37, whose larger diameter is turned outward and whose smaller diameter surrounds the circumference of the cylindrical locking pin 36 sealingly.
  • the locking pin 36 has at its lower end 38 a pin 39 for engagement in one of the recesses 32 of the bevel gear 30th
  • the pin 39 has a smaller diameter than the remaining area of the locking pin 36.
  • a radially projecting, disc-like sealing collar 40 connects. This is axially against the inner wall of the housing 12 and thus engages over the mouth of the sliding guide 35 and the stepped bore 37th
  • the locking pin 36 carries approximately centrally an annular groove 41, in which an O-ring 43 is inserted. This is sealingly between the locking pin 36 and the sliding guide 35 and prevents even with heavy use of the pin 39 during engagement in the recess 32 upon actuation of the spindle stop 34, a leakage of lubricant from the housing 12. Thus, a reliable seal between the sliding guide 35 and the locking pin 36 is reached.
  • the locking pin 36 has an actuating stroke for activating the spindle stop 34 of about 5 mm and then engages with its pin 39 completely in one of the recesses 32 of the bevel gear 30 a.
  • the diameter-length ratio of the locking pin is between 1.8 and 1.3. As a result, the radial surface pressure and the load of the housing 12 in the region of the sliding guide 35 are lower compared to conventional spindle stops.

Landscapes

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

Claims (7)

  1. Machine-outil portative (10) avec un boîtier (12), comportant un arbre de sortie (20) pouvant être entraîné en rotation et qui porte un outil d'usinage, notamment en forme de disque, pouvant être monté de façon remplaçable, dans laquelle l'arbre de sortie (20) peut être bloqué au moyen d'un boulon de blocage (36) déplaçable axialement, qui traverse un alésage de passage du boîtier (12) et qui peut être actionné de l'extérieur,
    caractérisée en ce que
    le rapport diamètre/longueur de l'alésage de passage (35) et du boulon de blocage (36) est inférieur à 1,8, de préférence égal à 1,5.
  2. Machine-outil portative selon la revendication 1,
    caractérisée en ce que
    l'alésage de passage (35) guide le boulon de blocage (36) directement - sans douille de guidage.
  3. Machine-outil portative selon la revendication 1,
    caractérisée en ce que
    le boulon de blocage (36) porte pratiquement au milieu un joint torique (43), en particulier dans une rainure annulaire (41).
  4. Machine-outil portative selon la revendication 1,
    caractérisée en ce que
    le boulon de blocage (36) porte un élargissement en forme de bourrelet (39) à son extrémité inférieure (38) dirigée vers l'intérieur du boîtier (12).
  5. Machine-outil portative selon la revendication 1,
    caractérisée en ce que
    le boulon de blocage (36) forme un col (47) à son extrémité supérieure et porte là une coiffe rapportée servant de touche (51).
  6. Machine-outil portative selon la revendication 1,
    caractérisée en ce que
    le boulon de blocage (36) porte, entre la coiffe (51) et la transition, en particulier ses épaulements (45), un ressort de pression (47) qui s'appuie en haut sur la coiffe (51) et en bas sur le boîtier (12).
  7. Machine-outil portative selon la revendication 1,
    caractérisée en ce que
    l'alésage de passage (35) est un alésage étagé, dont le plus grand diamètre est ouvert vers l'extérieur et dans lequel la coiffe (51) peut être enfoncée.
EP02774318A 2001-12-06 2002-09-10 Machine-outil manuelle a arret de rotation de broche Revoked EP1497081B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20119835U 2001-12-06
DE20119835U DE20119835U1 (de) 2001-12-06 2001-12-06 Handwerkzeugmaschine mit Spindelstop
PCT/DE2002/003358 WO2003049907A1 (fr) 2001-12-06 2002-09-10 Machine-outil manuelle a arret de rotation de broche

Publications (2)

Publication Number Publication Date
EP1497081A1 EP1497081A1 (fr) 2005-01-19
EP1497081B1 true EP1497081B1 (fr) 2006-08-16

Family

ID=7964882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02774318A Revoked EP1497081B1 (fr) 2001-12-06 2002-09-10 Machine-outil manuelle a arret de rotation de broche

Country Status (6)

Country Link
US (1) US7052384B2 (fr)
EP (1) EP1497081B1 (fr)
JP (1) JP2005511332A (fr)
CN (1) CN100421881C (fr)
DE (2) DE20119835U1 (fr)
WO (1) WO2003049907A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10360372B3 (de) * 2003-12-22 2005-06-09 Hilti Ag Werkzeugaufnahmeanordnung
US7179156B2 (en) * 2005-03-23 2007-02-20 Gison Machinery Co., Ltd. Grinder with easily installable/detachable grinding disc and a linkage effect
US8087977B2 (en) * 2005-05-13 2012-01-03 Black & Decker Inc. Angle grinder
DE102006001986A1 (de) * 2006-01-16 2007-07-19 Robert Bosch Gmbh Spannvorrichtung zum lösbaren Befestigen eines scheibenförmigen Werkzeugs
SE529929C2 (sv) * 2006-05-09 2008-01-08 Atlas Copco Tools Ab Portabelt verktyg med en frihjulslåsning av drivaxeln
US20110039482A1 (en) * 2009-07-29 2011-02-17 Terry Timmons Grinder
DE102010043182A1 (de) * 2010-10-29 2012-05-03 Robert Bosch Gmbh Tragbare Werkzeugmaschine
JP2013169623A (ja) * 2012-02-21 2013-09-02 Makita Corp 作業工具
DE102012210014A1 (de) * 2012-06-14 2013-12-19 Schaeffler Technologies AG & Co. KG Arretiervorrichtung für ein Getriebe, insbesondere für ein Kraftfahrzeuggetriebe
US9314896B2 (en) * 2012-07-03 2016-04-19 Atlas Copco Industrial Technique Ab Power tool
DE102014216441A1 (de) * 2014-08-19 2016-02-25 Robert Bosch Gmbh Handwerkzeugmaschine
KR101578730B1 (ko) * 2014-09-22 2015-12-21 계양전기 주식회사 그라인더 휠 잠금장치
US10682714B2 (en) * 2016-08-31 2020-06-16 Robert Bosch Tool Corporation Oscillating interface for an oscillating power tool
EP3300835B1 (fr) * 2016-09-29 2021-05-12 Black & Decker Inc. Accessoire de serrage et mécanisme de verrouillage de broche pour le verrouillage d'un outil électrique
CN207189852U (zh) 2017-06-05 2018-04-06 米沃奇电动工具公司 台锯
US10818450B2 (en) 2017-06-14 2020-10-27 Black & Decker Inc. Paddle switch
EP3705248A4 (fr) * 2017-10-31 2021-08-18 Koki Holdings Co., Ltd. Outil de puissance

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2816398A1 (de) * 1978-04-15 1979-10-25 Licentia Gmbh Winkelschleifer mit einer spannvorrichtung fuer die schleifscheibe in form eines spann- und druckflansches
US4179632A (en) * 1978-12-06 1979-12-18 The Singer Company Spindle locking mechanism for a rotary power device
DE3120899C2 (de) * 1981-05-26 1983-10-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Arretiervorrichtung für die Antriebsspindel von Winkelschleifern
US4467896A (en) * 1983-06-17 1984-08-28 Black & Decker Inc. Locking mechanism for a rotary power machine
DE59200319D1 (de) * 1991-07-05 1994-09-01 Fein C & E Tragbare Werkzeugmaschine.
US5464365A (en) * 1991-09-21 1995-11-07 Robert Bosch Gmbh Motor-driven hand-held machine tool
DE4424022A1 (de) 1994-07-08 1996-01-18 Metabowerke Kg Arretiervorrichtung für die Antriebsspindel von Handwerkzeugmaschinen
DE20000223U1 (de) * 2000-01-10 2001-05-23 Bosch Gmbh Robert Winkelschleifer mit Elektroantrieb
US6702090B2 (en) * 2001-03-14 2004-03-09 Milwaukee Electric Tool Corporation Power tool and spindle lock system

Also Published As

Publication number Publication date
US7052384B2 (en) 2006-05-30
CN1484570A (zh) 2004-03-24
CN100421881C (zh) 2008-10-01
EP1497081A1 (fr) 2005-01-19
WO2003049907A1 (fr) 2003-06-19
DE50207890D1 (de) 2006-09-28
US20040069513A1 (en) 2004-04-15
DE20119835U1 (de) 2003-04-10
JP2005511332A (ja) 2005-04-28

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