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EP4003645B1 - Machine-outil - Google Patents

Machine-outil

Info

Publication number
EP4003645B1
EP4003645B1 EP20740608.3A EP20740608A EP4003645B1 EP 4003645 B1 EP4003645 B1 EP 4003645B1 EP 20740608 A EP20740608 A EP 20740608A EP 4003645 B1 EP4003645 B1 EP 4003645B1
Authority
EP
European Patent Office
Prior art keywords
spindle
outer diameter
designed
axis
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.)
Active
Application number
EP20740608.3A
Other languages
German (de)
English (en)
Other versions
EP4003645A1 (fr
Inventor
Helmut Hummel
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 EP4003645A1 publication Critical patent/EP4003645A1/fr
Application granted granted Critical
Publication of EP4003645B1 publication Critical patent/EP4003645B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B24B23/02—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
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • 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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/003—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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power 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
    • 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
    • B24B55/04—Protective covers for the grinding wheel
    • B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
    • B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
    • 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

Definitions

  • the present invention relates to a machine tool, in particular an angle grinder, with a spindle which can be driven about a rotational axis according to the type described in more detail in the preamble of patent claim 1.
  • a quick-clamping device for angle grinders is known. Grinding wheels specifically adapted to the angle grinder are securely attached to the spindle using a clamping device.
  • a particularly hand-held machine tool in particular an angle grinder, with a spindle drivable about a rotational axis
  • a device is provided that can be secured to the spindle by means of a rotary joint.
  • a separate securing device is provided that is operatively connected to the spindle, is arranged at least partially on the output side of the device, and has, at least during operation of the machine tool, an outer diameter that is at least partially larger with respect to the rotational axis than an outer diameter of the spindle.
  • a machine tool designed according to the invention it can be ensured in a simple and cost-effective manner that the device that can be brought into operative connection with the spindle cannot become detached from the spindle during operation of the machine tool.
  • This is achieved in particular by providing a separate element on the machine tool side, which prevents the device from becoming detached from the spindle by the separate element having, at least in some regions, a larger outer diameter than the outer diameter of the spindle, at least during operation of the machine tool. This reliably prevents injury to a user.
  • various types of machining elements such as grinding wheels, cutting wheels, brushes or the like, can advantageously be used without their own requirements with regard to a safety device, so that they can be implemented simply and cost-effectively.
  • the locking device can also have a non-circular outer edge region, so that the locking device is not rotationally symmetrical to the spindle's axis of rotation.
  • the outer diameter of the locking device is defined as twice the maximum distance of a region of the locking device facing away from the spindle's axis of rotation from the spindle's axis of rotation.
  • the device is designed as a tool or machining element with an internal thread that can be brought into operative connection with an external thread of the spindle.
  • the tool or machining element can be designed, for example, as a disk, grinding disk, cutting disk, brush or the like, wherein the tool itself is connected to the spindle.
  • the device can be designed as a fastening nut with an internal thread that can be brought into operative connection with an external thread of the spindle for securing a tool or machining element.
  • the fastening nut is preferably designed to secure a disk, grinding disk, cutting disk or the like without an internal thread, wherein the tool can be slipped onto the spindle, for example.
  • the securing device has a threaded region with an external thread, with which the securing device can be brought into operative connection with a region of the spindle having an internal thread, in particular running in the longitudinal direction of the spindle and arranged concentrically to the axis of rotation, wherein a pitch of the thread of the securing device is smaller than a pitch of a thread of the device. Due to the smaller pitch of the thread of the securing device compared to the pitch of the thread of the device, loosening of the device from the spindle is reliably prevented even if the device is rotated relative to the spindle.
  • the securing device preferably has a plate-shaped region which is arranged on one end of the spindle.
  • the securing device is preferably arranged concentrically to the axis of rotation of the spindle.
  • the securing device is designed as a spring ring, which is arranged in a groove of the spindle, in particular running perpendicular to the axis of rotation, wherein the spring ring is displaceable between a preloaded position, in which an outer diameter of the spring ring is less than or equal to the outer diameter of the spindle, and a relaxed position, in which the outer diameter of the spring ring is larger than the outer diameter of the spindle.
  • the spring ring can have a continuous slot, in particular in the circumferential direction, which allows a reduction in the outer diameter of the spring ring.
  • the device can have chamfers, in particular on an inner diameter in the longitudinal direction of the spindle, preferably on both sides.
  • the spring force of the spring ring is selected such that it is greater than a force acting on the spring ring during operation due to a detached device.
  • the securing device is designed as a lever pivotally connected to the spindle, which can be displaced, in particular under the influence of centrifugal force, into a deflected position in which the lever has an outer diameter that is at least partially larger than the outer diameter of the spindle.
  • the lever is designed such that it is displaced into its deflected position solely by a centrifugal force acting during operation of the machine tool, fastening and detaching the device when the machine tool is in the non-actuated state is easily possible.
  • This embodiment is not part of the invention as defined in claim 1.
  • the lever is preferably mounted on the spindle so as to be pivotable about an axis transverse to the axis of rotation of the spindle, wherein the lever is arranged in particular in a recess of the spindle
  • the lever can thus be easily pivoted between the use position and the non-use position, wherein the lever in the non-use position enables the device to be arranged on the spindle and the lever is thus preferably arranged entirely within an envelope geometry predetermined by the outer diameter of the spindle.
  • the lever can have an end region on either side of a pivot point, wherein each of the end regions can be pivoted into the deflected position, in which the respective end region has an outer diameter that is at least partially larger than the outer diameter of the spindle.
  • This design has the advantage that both devices with a large extension in the longitudinal direction of the spindle and devices with a small extension in the longitudinal direction of the spindle can be securely held on the spindle.
  • two spring devices can be provided which hold the lever in a balance.
  • a distance between the two end regions of the lever in the longitudinal direction of the spindle is greater than an extension of the device in the longitudinal direction of the spindle.
  • the lever can, for example, be U-shaped or curved.
  • a thickness of the device in the longitudinal direction of the spindle is preferably smaller than a distance between the end regions of the lever in the longitudinal direction of the spindle.
  • the securing device is designed as a plate-shaped element, in particular, which is arranged in a recess of the spindle and is displaceable via a guide device, in particular transversely to the axis of rotation.
  • the plate-shaped element can be designed in such a way that it is transferred into the deflected position due to the centrifugal force acting during operation of the machine tool and securely holds the device on the spindle.
  • the recess runs, for example, substantially in the longitudinal direction of the spindle or substantially transversely to the longitudinal direction of the spindle, wherein the plate-shaped Element is arranged substantially in the longitudinal direction or transverse direction of the spindle, respectively.
  • This embodiment is not part of the invention as defined in claim 1.
  • the device can be in contact with the element regardless of its extension in the longitudinal direction of the spindle and can be held without play in the longitudinal direction of the spindle during operation of the machine tool.
  • a spring device can be provided that applies a force to the element acting outward relative to the spindle's rotational axis.
  • the element can be moved, for example, manually or by means of a tool, against the spring force of the spring device into its non-use position.
  • Fig. 1 shows a highly simplified view of a particularly hand-held machine tool 1, designed here as an angle grinder.
  • the machine tool 1 contains a housing 3, a battery 4 connected to the housing 3 as a power supply, a head 5 with a tool holder 6.
  • the tool holder 6 contains a flange 7, a spindle 8, and a device 9.
  • the device 9, designed here as a clamping element or fastening nut, has an internal thread 10, by means of which the device 9 can be arranged on an external thread 11 of the spindle 8 defining an external diameter 14 of the spindle 8 and can be displaced in the longitudinal direction L of the spindle 8.
  • the spindle 8 serves to arrange a tool 12, for example a grinding or cutting wheel, and to transmit torque from an electric motor 2 to the tool 12.
  • the tool 12 has a central through-bore 13, wherein the tool can be placed onto the spindle 8 by means of the through-bore 13 and secured by means of the device 9.
  • the spindle 8 is connected to the head 5 of the machine tool 2 by means of a flange 7 and is mounted for rotation about the longitudinal axis L.
  • the flange 7 is positioned below the spindle 8 on the head 5 of the machine tool 2 with respect to the longitudinal direction L of the spindle 8.
  • the following shows various designs of a securing device, each of which is arranged partially or completely on a side of the tool 12 and/or the fastening nut 9 facing away from the head 5 of the machine tool 1 and which, at least in the operating state of the machine tool 1 with the spindle 8 rotating, reliably prevents the tool 12 and/or the fastening nut 9 from becoming loose from the spindle 8 by the fact that the respective securing device, during operation of the machine tool 1, assumes a use position on a side of the device 9 facing away from the head 5, in which an outer diameter of the securing device is at least partially larger than the outer diameter 14 of the spindle 8.
  • a region of the respective securing device facing away from the longitudinal axis L is at a greater distance from the longitudinal axis L than the spindle 8 in at least one circumferential region of the longitudinal axis L.
  • a case of this type is also described below by the fact that an outer diameter of the respective securing device has a larger outer diameter than the spindle 8.
  • the non-use position is defined as a position of the safety device in which the respective safety device is arranged completely within an envelope geometry of the spindle 8 and the device 9 can thus be screwed onto the spindle 8 without being hindered by the safety device.
  • Fig. 2 shows, in a highly simplified manner, an end region of the spindle 8, wherein, starting from an end 15 of the spindle 8 facing away from the head 5 of the machine tool 2, an internal thread 16 extends concentrically to the spindle 8 in the longitudinal direction L of the spindle 8.
  • a securing device 17 which has a pin-like region 18 with an external thread 19, by means of which the securing device 17 interacts with the internal thread 16 of the spindle 8.
  • a plate-shaped region 20 Connected to the pin-like region 18 of the securing device 17 is a plate-shaped region 20 which is circular here and has a larger external diameter 21 than the spindle 8.
  • the thread pair 16, 19 has a smaller pitch than the external thread 11 of the spindle 8. If, during operation of the machine tool 1, the fastening nut 9 becomes loose relative to the spindle 8 and comes into contact with the plate-shaped area 20 of the securing device 17, a different axial rotational offset with a resulting inhibition occurs through the appropriate selection of the pitches of the threads 16, 19, 11, 10, so that a release of the securing device 17 from the spindle 8 and thus of the tool 12 from the spindle 8 is reliably prevented.
  • the securing device 17 rests against the tool 12 in the longitudinal direction L or is spaced from it.
  • a groove 25 running perpendicular to the longitudinal direction L is arranged, in which a securing device 26, here a spring device 26 designed as a spring ring, is arranged.
  • the spring ring 26 has a recess 27 in the circumferential direction U, so that the spring ring 26 can be displaced under the action of force between a use position, in which an outer diameter 28 of the spring ring 26 is larger than the outer diameter 14 of the spindle 8, and a preloaded position, in which the outer diameter 28 of the spring ring 26 is smaller than or equal to the outer diameter 14 of the spindle 8.
  • Fig. 3 1 shows a section of the fastening nut 9, wherein it can be seen that the fastening nut 9 is designed with a chamfer 31, 32 in each of its axial end regions in the region of its internal thread 10, so that the fastening nut 9 can be screwed onto or removed from the spindle 8 via the spring ring 26 by applying a defined force in the longitudinal direction L.
  • the force required for this is in particular coordinated with the spring force of the spring ring 26 in such a way that it is greater than the forces occurring during operation of the machine tool 1 and acting on the spring ring 26.
  • the tool 12 or the fastening nut 9 rests against the spring ring 26 in the longitudinal direction L in the assembled state or that there is a distance between them.
  • the spindle 8 has a recess 35 extending in the longitudinal direction L from the end 15, in which recess a securing device designed as a lever 36 is mounted so as to be pivotable about a pivot axis 37 running perpendicular to the longitudinal direction L.
  • the lever 36 is mounted in such a way that, during operation of the machine tool 1 and rotation of the spindle 8 about the longitudinal axis L, the centrifugal force acting thereon displaces it into a use position in which a region of a first end region 38 of the lever 36 facing away from the axis of rotation L is in some regions at a greater distance 41 from the axis of rotation L than an outer side of the spindle 8.
  • An outer diameter of the lever 36 is thus larger than the outer diameter 14 of the spindle 8.
  • a spring device 40 is provided in the present case, which applies a force pressing the lever 36 in the direction of the use position.
  • the lever 36 has a second end region 39 arranged on a side of the pivot axis 37 facing away from the first end region 38, which extends beyond the end 15 of the spindle 8 in the longitudinal direction L.
  • the lever 36 can be easily displaced from the use position into a release position, particularly for assembling or disassembling a tool 12, in which the lever 36 is arranged entirely within an envelope geometry of the spindle 8 and thus does not extend beyond the outer diameter 14 of the spindle 8.
  • the securing element 52 is designed such that it can be displaced from the use position into the non-use position, wherein the securing element 52 does not protrude beyond an envelope geometry of the spindle 8 in the non-use position and a tool 12 and/or the fastening nut 9 can be mounted or dismounted without being hindered by the securing element 52.
  • a side limit 58 of the securing element 52 facing away from the longitudinal axis L of the spindle 8 is in this case designed obliquely, ie, the side limit 58 encloses an angle 59 with the longitudinal direction L, wherein an end of the securing element 52 facing the end 15 of the spindle 8 is at a greater distance from the longitudinal axis L of the spindle 8 than an end of the securing element 52 facing away from the end 15 of the spindle 8.
  • This embodiment of the securing element 52 has the advantage that, in the case of various tools 12 that can be brought into operative connection with the spindle 8, the securing element 52, in the assembled state, is in contact with the tool 12 or the fastening nut 9, the tool 12 or the fastening nut 9 is thereby clamped in the assembled position due to the self-locking mechanism and loosening is thus reliably prevented.
  • FIG. 8 A further embodiment of a safety device 65 is shown in Fig. 8 to Fig. 10 shown.
  • the securing device 65 is again designed as a securing element, which is arranged in a recess 66 of the spindle 8.
  • Fig. 8 and Fig. 9 show sectional views through an area of the spindle 8 in which the securing element 65 is arranged.
  • the securing element 65 is in Fig. 9 shown in the position of use, in which the securing element 65 projects beyond the envelope geometry of the spindle 8 in the radial direction and a distance 73 of a region of the securing element 65 facing away from the longitudinal axis L is greater than a distance of the outer contour of the spindle 8 from the longitudinal axis L.
  • the securing element 65 thus has, at least in some regions, a larger outer diameter than the outer diameter 14 of the spindle 8.
  • the securing element 65 is pressed into the position shown by means of a spring device 69 and is supported in this position on flanks 67, 68 of the recess 66.
  • the securing devices designed according to the invention are suitable both for the use of a tool 12 fixed to the spindle 8 via a fastening nut 9 and for the use of a tool 12 which can be fixed to the spindle 8 and has an internal thread.

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)

Claims (1)

  1. Machine-outil (1), en particulier meuleuse d'angle, comportant une broche (8) pouvant être entraînée autour d'un axe de rotation (L), dans laquelle un dispositif (9) est prévu, lequel peut être fixé à la broche (8) au moyen d'une liaison rotative, dans laquelle un dispositif de sécurité (26) séparé et en liaison active avec la broche (8) est prévu, lequel, au moins à l'état monté du dispositif, est disposé dans certaines zones côté sortie du dispositif (9) et présente, au moins pendant le fonctionnement de la machine-outil (1), dans une zone opposée à l'axe de rotation (L), dans au moins une zone périphérique de l'axe de rotation (L), une distance plus grande par rapport à l'axe longitudinal (L) que la broche (8), et dans lequel le dispositif de sécurité (26) présente un diamètre extérieur (28) plus grand, au moins dans certaines zones, par rapport à l'axe de rotation (L) qu'un diamètre extérieur (14) de la broche (8),
    caractérisée en ce
    que le dispositif de sécurité (26) est conçu sous la forme d'une rondelle-ressort qui est disposée dans une rainure (25) de la broche (8) s'étendant en particulier perpendiculairement à l'axe de rotation (L), dans laquelle la rondelle-ressort (26) peut être déplacée entre une position précontrainte, dans laquelle un diamètre extérieur (28) de la rondelle-ressort (26) est inférieur ou égal au diamètre extérieur (14) de la broche (8), et une position détendue, dans laquelle le diamètre extérieur (28) de la rondelle-ressort (26) est supérieur au diamètre extérieur (14) de la broche (8), dans laquelle le dispositif (9) est conçu sous forme d'outil (12) ou d'élément d'usinage conçu avec un filetage intérieur et pouvant être amené en liaison active avec un filetage extérieur (11) de la broche (8), ou en ce que le dispositif (9) est réalisé sous forme d'écrou de fixation (9) conçu avec un filetage intérieur (10) et pouvant être amené en liaison active avec un filetage extérieur (11) de la broche (8) pour fixer un élément d'usinage.
EP20740608.3A 2019-07-24 2020-07-14 Machine-outil Active EP4003645B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19188021.0A EP3769913A1 (fr) 2019-07-24 2019-07-24 Machine-outil
PCT/EP2020/069845 WO2021013628A1 (fr) 2019-07-24 2020-07-14 Machine-outil

Publications (2)

Publication Number Publication Date
EP4003645A1 EP4003645A1 (fr) 2022-06-01
EP4003645B1 true EP4003645B1 (fr) 2025-09-24

Family

ID=67438675

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19188021.0A Withdrawn EP3769913A1 (fr) 2019-07-24 2019-07-24 Machine-outil
EP20740608.3A Active EP4003645B1 (fr) 2019-07-24 2020-07-14 Machine-outil

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19188021.0A Withdrawn EP3769913A1 (fr) 2019-07-24 2019-07-24 Machine-outil

Country Status (4)

Country Link
US (1) US20220274227A1 (fr)
EP (2) EP3769913A1 (fr)
CN (1) CN113939380B (fr)
WO (1) WO2021013628A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19960970B4 (de) * 1999-12-17 2007-07-12 Robert Bosch Gmbh Tragbare Handwerkzeugmaschine
EP1452284B1 (fr) * 2003-02-28 2007-12-05 HILTI Aktiengesellschaft Ecrou à serrage rapide pour outils discoides
DE202013006901U1 (de) * 2013-08-01 2014-11-03 C. & E. Fein Gmbh Werkzeugmaschine mit Werkzeugaufnahmeeinrichtung
DE102017218668A1 (de) * 2017-10-19 2019-04-25 Robert Bosch Gmbh Handwerkzeugmaschine

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Publication number Priority date Publication date Assignee Title
US4951423A (en) * 1988-09-09 1990-08-28 Cynthia L. B. Johnson Two sided abrasive disc with intermediate member
US5577872A (en) * 1993-03-15 1996-11-26 Power Tool Holders Incorporated Torque enhancing tightening screw
US6083128A (en) * 1998-05-15 2000-07-04 Young; Randall K. Aerial toy
US6640377B2 (en) * 2000-03-28 2003-11-04 Dedication To Detail, Inc. Quick release buffing pad assembly
DE102007055775A1 (de) * 2007-12-12 2009-06-18 Hilti Aktiengesellschaft Handwerkzeugmaschine mit Spannmutter
DE102010039637A1 (de) * 2010-08-23 2012-02-23 Robert Bosch Gmbh Handwerkzeugmaschine mit einem Spannhals
DE102011005021A1 (de) * 2011-03-03 2012-09-06 Robert Bosch Gmbh Werkzeugspannvorrichtung
DE102012007931A1 (de) * 2012-04-17 2013-10-17 C. & E. Fein Gmbh Handwerkzeug
JP6553807B2 (ja) * 2015-09-02 2019-07-31 ローム アンド ハース カンパニーＲｏｈｍ Ａｎｄ Ｈａａｓ Ｃｏｍｐａｎｙ フォームガン式ディスペンサ用の洗浄用アダプタ及び方法
EP3202533A1 (fr) * 2016-02-02 2017-08-09 HILTI Aktiengesellschaft Dispositif de serrage
DE102016220362A1 (de) * 2016-10-18 2018-04-19 Robert Bosch Gmbh Schnellspannvorrichtung für eine zumindest eine rotierend antreibbare Abtriebswelle aufweisende tragbare Werkzeugmaschine, insbesondere Winkelschleifmaschine
DE102017214118A1 (de) 2017-08-11 2019-02-14 Robert Bosch Gmbh Schnellspannvorrichtung für eine, insbesondere zumindest eine rotierend antreibbare Abtriebswelle aufweisende, tragbare Werkzeugmaschine, insbesondere Winkelschleifmaschine
DE102019207977A1 (de) * 2019-05-29 2020-12-03 Robert Bosch Gmbh Kühlvorrichtung für eine Handwerkzeugmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19960970B4 (de) * 1999-12-17 2007-07-12 Robert Bosch Gmbh Tragbare Handwerkzeugmaschine
EP1452284B1 (fr) * 2003-02-28 2007-12-05 HILTI Aktiengesellschaft Ecrou à serrage rapide pour outils discoides
DE202013006901U1 (de) * 2013-08-01 2014-11-03 C. & E. Fein Gmbh Werkzeugmaschine mit Werkzeugaufnahmeeinrichtung
DE102017218668A1 (de) * 2017-10-19 2019-04-25 Robert Bosch Gmbh Handwerkzeugmaschine

Also Published As

Publication number Publication date
EP4003645A1 (fr) 2022-06-01
CN113939380A (zh) 2022-01-14
WO2021013628A1 (fr) 2021-01-28
CN113939380B (zh) 2023-08-18
EP3769913A1 (fr) 2021-01-27
US20220274227A1 (en) 2022-09-01

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