EP2371487A1 - Dispositif d'outil rotatif entraîné de manière rotative - Google Patents

Dispositif d'outil rotatif entraîné de manière rotative Download PDF

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Publication number
EP2371487A1
EP2371487A1 EP10003451A EP10003451A EP2371487A1 EP 2371487 A1 EP2371487 A1 EP 2371487A1 EP 10003451 A EP10003451 A EP 10003451A EP 10003451 A EP10003451 A EP 10003451A EP 2371487 A1 EP2371487 A1 EP 2371487A1
Authority
EP
European Patent Office
Prior art keywords
plug
clamping
spring
clamping element
opening
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.)
Granted
Application number
EP10003451A
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German (de)
English (en)
Other versions
EP2371487B1 (fr
Inventor
Alexander Montabaur
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.)
Monti Werkzeuge GmbH
Original Assignee
Monti Werkzeuge 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 Monti Werkzeuge GmbH filed Critical Monti Werkzeuge GmbH
Priority to EP20100003451 priority Critical patent/EP2371487B1/fr
Publication of EP2371487A1 publication Critical patent/EP2371487A1/fr
Application granted granted Critical
Publication of EP2371487B1 publication Critical patent/EP2371487B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • 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
    • 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

Definitions

  • the invention relates to a rotationally drivable rotary tool device, comprising a tool holder with at least two clamping elements, which regularly receive and hold a rotary tool between them, and with a closure element connecting the two clamping elements with each other.
  • Such rotary drivable rotary tool devices are, for example, by the generic type writings DE 42 05 265 C1 and DE 20 2006 013 546 U1 known.
  • the rotary tool may not be limited to a ring brush with a flexible brush belt, such as the DE 42 05 265 C1 describes in detail.
  • other turning tools can be used, such as grinding or polishing elements according to the DE 20 2005 007 270 U1 or according to the EP 1 859 903 B1 the applicant.
  • the rotary tool device in question may be driven in rotation by means of a machine tool or by means of a rotary tool.
  • Examples of such rotary tools shows inter alia the introductory already referred to DE 20 2005 007 270 U1 or even the EP 1 688 061 B1 the applicant.
  • the procedure is usually such that the two clamping elements are connected to each other after inserting the turning tool.
  • the closure element which often and at the same time acts as a Aufspanndom to interact with a holder in or on a rotary tool, so the attacks DE 20 2006 013 546 U1 on a designed as a screw fastener back, which can be coupled to a connecting pin.
  • the Connecting pin is installed after the assembly of the turning tool device in the rotary tool in question or connected thereto. Similar goes the DE 42 05 265 C1 ago, which works at this point with an adapter or a clamping screw connection.
  • the invention is based on the technical problem of further developing such a turning tool device so that the replacement of the turning tool is made easier overall, for example, without additional tools and can be done quickly.
  • a generic rotationally drivable rotary tool device in the invention is characterized in that the closure element is formed as the two clamping elements against the force of at least one spring releasably connecting plug element.
  • a special closure element which couples the two clamping elements together - usually after insertion of the turning tool. Because with this closure element it is a plug-in element which removably connects the two clamping elements against the force of a spring. That is, the force of the spring in conjunction with the plug element for the coupling of the two clamping elements with each other. At the same time the rotary tool is received and held between the two clamping elements. In order to release the two clamping elements from each other and free the turning tool, the plug element must be operated against the force of the spring. When this force is overcome, the male element can be released and releases the two clamping elements and the rotary tool held by the two clamping elements.
  • the plug element is formed in two parts with a thrust element and an actuating element.
  • the actuator can be acted upon by an operator so that the plug element is released against the force of the spring of the two clamping elements and the two clamping elements free from each other.
  • the previously held by the two clamping elements and recorded between them rotary tool is released and can be replaced, for example.
  • the at least one spring required in this connection, against the force of which the plug element is released, is usually arranged in the tool holder.
  • the spring is located in the interior of a first clamping element or is arranged on the respective clamping element.
  • the plug element is usually connected to this first clamping element.
  • the plug element advantageously engages in an opening on the first clamping element, with the help of the already mentioned thrust element.
  • the actuating element engages over the opening in question in the first clamping element.
  • the spring is interposed between the male element and the first clamping element.
  • the plug-in element is arranged on the first clamping element.
  • the plug element immersed in the assembled state in a receptacle on the other, second clamping element.
  • the two clamping elements are releasably connected to each other.
  • plug element ensures a coupling of the two clamping elements with each other by the engaging in the opening plug element at the same time dips into the receptacle on the other second clamping element.
  • the opening in the first clamping element is equipped in detail with at least one edge-side spring tongue.
  • the design is such that the said spring tongues enclose the opening in the manner of a collar or Federkragens.
  • the male element With its push element.
  • the spring is arranged.
  • the collar on the first clamping element emerges (together with the plug element or its thrust element) in the receptacle on the other second clamping element.
  • the plug element ensures that in the assembled state, the spring tongue is spread and released in a dissolved state. Since usually several spring tongues are realized and define the already mentioned collar edge of the opening in the first clamping element, the plug element in the assembled state ensures that the collar or spring collar is spread. This spread collar wedges in the receptacle in the second clamping element. Then the two clamping elements are connected together. This applies to the assembled state.
  • the procedure in detail is that the splayed in the assembled state of the plug spring tongue engages the first clamping element in an undercut of the receptacle on the second clamping element. As soon as the spring tongue is no longer spread apart by the plug-in element, the spring tongue moves away from the undercut of the receptacle on the second tensioning element. Thereby, the spring tongue can be pulled out of the receptacle on the second clamping element on the first clamping element and the two clamping elements can be detached from each other.
  • the at least one spring arranged in the tool holder or arranged on the first clamping element ensures that the plug-in element in question is acted upon in the direction of the mounted state. That is, the spring ensures that the thrust element is acted upon in the direction of a head of the single spring tongue or the plurality of spring tongues. In this (mounted) position, the thrust element spreads the spring tongue or ensures that the collar formed from the spring tongues is spread apart at the edge of the opening in the first clamping element.
  • the push element or the plug element as a whole is equipped on the head side with a push nose. Since the plug element is generally rotationally symmetrical, the thrust nose forms a thrust nose ring as a whole.
  • This thrust lug ring is in the assembled state of the plug element and due to the force built up by the spring at the head of the spring tongues or at the head of the collar formed by the spring tongues, and usually on the inside.
  • the thrust nose ring ensures that the spring tongues are spread apart or the collar undergoes the described spreading or widening.
  • the spring is supported on the one hand on the thrust nose ring and on the other hand on an opening edge, which surrounds the opening in the first clamping element, in which the plug element is inserted.
  • the pusher passes through the opening in question and is surrounded by the opening edge.
  • the actuating element engages over the opening in question in the first clamping element.
  • the plug-in element is usually rotationally symmetrical.
  • the plug-in element has at least in its foot region a hollow design or a hollow region.
  • the plug element in the assembled state can overlap a centering pin.
  • This centering pin is usually formed on the second clamping element.
  • the centering pin is usually located within the receptacle in the second clamping element.
  • the plug element has spread the collar on the first clamping element and the collar is immersed in the undercut in the receptacle in the second clamping element, and the centering pin extends into the hollow foot region of the plug element.
  • this condition is only reached when the two clamping elements and consequently also the plug element are in the assembled state.
  • the plug element For the purpose of assembly, the plug element must first be withdrawn against the force of the spring. Then, the two clamping elements are combined with each other by the collar is immersed in the first clamping element in the receptacle on the second clamping element. At the same time immersed in this process, the centering pin in the receptacle of the second clamping element in the collar on the first clamping element. However, a clearance is formed between the collar and the centering pin. This free space fills the plug-in element or the plug pin in the assembled state.
  • the plug can be released. Due to the force of the spring of the plug goes over in the assembled state. At the same time, the thrust nose ring moves towards the end of the thrust element on the collar head or the respective head of the spring tongues and ensures that the collar is spread open. This is possible because the collar is located in the region of the undercut of the receptacle in the second clamping element. At the same time, the hollow inner region or hollow region of the plug-in element engages over the centering pin. In fact, the hollow inner region of the plug-in pin and the centering pin are generally designed to be predominantly positive fit with respect to one another, so that the two clamping elements experience mutual centering when the plug-in element or plug-in pin is mounted.
  • the second clamping element is designed as a receiving clamping element for the rotary tool.
  • the second clamping element usually has one or more receiving webs, between or in which the rotary tool is inserted.
  • the first clamping element usually acts as a stop-clamping element. That is, the stopper clamping element ensures that the previously inserted into the receptacles between the receiving webs of the receiving clamping element rotary tool is ultimately held in these recordings.
  • the clamping elements can of course be designed quite differently. So it is conceivable and is within the scope of the invention, for example, to integrate a clamping element in the rotary tool.
  • a rotatably drivable turning tool device is made available, which enables a tool-free, manual connection of the two clamping elements with each other. This allows the replacement of the turning tool quickly and safely, without having to resort to a separate tool for the assembly process.
  • a rotatably drivable turning tool device is made available, which enables a tool-free, manual connection of the two clamping elements with each other. This allows the replacement of the turning tool quickly and safely, without having to resort to a separate tool for the assembly process.
  • main benefits are the main benefits.
  • a rotatably driven rotary tool device which may for example be driven by a rotary tool, as shown in the DE 20 2005 007 210 U1 or even the EP 1 688 061 B1 is described.
  • a tool holder 1, 2 which is composed in the embodiment of two clamping elements 1, 2 or equipped with such clamping elements 1, 2.
  • the tool holder 1, 2 is equipped with a Positionieraus principleung 3, in which engages a not explicitly shown connecting pin. With the help of this connecting pin of the tool holder 1, 2 is coupled to the rotary tool, for example, may engage in a chuck.
  • the tool holder 1, 2 serves for receiving and holding a in Fig. 1
  • the turning tool 4 may be a rotary brush with a flexible brush belt, as shown in the DE 42 05 265 C1 the applicant is described. Basically, but also a rotary tool according to the EP 1 859 903 B1 be recorded.
  • the two clamping elements 1, 2 ensure that between them respectively with their help, the rotary tool in question 4 is received and held. Consequently, for example, a surface can be machined with a turning tool 4 equipped in this way.
  • the two clamping elements 1, 2 are connected to each other by a closure element 5, 6.
  • the closure element 5, 6 is a plug-in element 5, 6 which removably connects the two tension elements 1, 2 to one another.
  • the two clamping elements 1, 2 can be released from each other when the plug-in element 5, 6 is acted upon against the force of a spring 7. If the plug-in element 5, 6 experiences no action, then the spring 7 ensures the coupling of the two tensioning elements 1, 2 through the plug-in element 5, 6. It can be seen that the spring 7 is arranged in the interior of the tool holder 1, 2. In fact, the spring 7 is in a first clamping element 1 of the two clamping elements 1, 2nd
  • the two clamping elements 1, 2 have corresponding positioning elements 8, 9, which ensure that the two clamping elements 1, 2 in the assembled state according to Fig. 1 Do not perform any unwanted relative (usually rotational) movement to each other.
  • the two clamping elements 1, 2 in the assembled state according to Fig. 1 connected to each other, and indeed they form a rotationally secure and axially fixed unit with respect to rotations about a common axis of rotation R. Opposite this axis of rotation R is the illustrated tool holder 1, 2 or the two clamping elements 1, 2 are formed rotationally symmetrical overall. This also applies to the plug-in element 5, 6.
  • the plug-in element or the plug-in pin 5, 6 is formed in two parts and has an actuating element 5 as a T-leg and a thrust element 6 as a T-bridge.
  • the actuating element 5 and the thrust element 6 are connected to each other, in this case by an arranged on the axis of rotation R and indicated screw with hexagon head. Of course this is not mandatory. In any case, the actuator 5 and the pusher 6 can be releasably coupled together.
  • the plug-in element 5, 6 is arranged on the first clamping element 1.
  • the first clamping element 1 acts as a stop-clamping element 1 for the rotary tool 4.
  • the second clamping element 2 is designed as a receiving clamping element 2 for the rotary tool in question.
  • the receiving clamping element 2 has one or more indicated receiving webs 10, which define between them one or more receptacles 11 and a receiving ring 11, within which the Turning 4 is recorded. Since only the second clamping element 2 is equipped with these receiving webs 10 and consequently also the receiving ring 11 formed thereby, the second clamping element 2 acts as a receiving clamping element 2.
  • the first clamping element 1 as stop-clamping element 1 ensures that the inside of the receiving ring 11 recorded rotary tool 4 is held captive in the receiving ring 11 during operation.
  • the stop-clamping element or first clamping element 1 thus acts like a stop.
  • the plug-in element 5, 6 is - as stated - arranged on or in the first clamping element 1.
  • the plug element 5, 6 immersed in the assembled state in a receptacle 13 on the second clamping element 2 a.
  • This receptacle 13 on the second clamping element 2 is formed in a ring 14, which surrounds the receptacle 3 at the same time.
  • the plug-in element 5, 6 engages in an opening 15 in the first tensioning element 1.
  • the opening 15 is enclosed by an annular opening edge 16.
  • the opening edge 16 is overlapped by the actuating element 5 of the plug-in element 5, 6.
  • the thrust element 6 engages through the opening 15.
  • the opening edge 16 acts as a stop for the spring 7.
  • the spring 7 fills an annular space between the opening edge 16 and a thrust nose 17.
  • the thrust nose 17 is formed at the end of the thrust element 6. Because the plug-in element 5, 6 is designed as a total plug pin 5, 6 and thus cylindrical, it is at the push tab 17 in detail to a push tab 17. Between the push tab 17 and the opening edge 16, the spring 7 is added and fills one between the opening edge 16 and the thrust lug ring 17 formed annular space 18 more or less completely.
  • This annular space 18 is enclosed by one or more spring tongues 19.
  • a plurality of spring tongues 19 are realized, which are arranged on the edge side of the opening 15 in the first clamping element 1.
  • the questionable spring tongues 19 form a circumferential collar or spring collar 20.
  • the collar 20 is immersed in the assembled state of the plug-in element 5, 6 in the receptacle 13 in the second clamping element 2 a. It can be seen that the plug-in element 5, 6 spreads the individual spring tongues 19 in the assembled state. In contrast, the spring tongues 19 are released in a released state.
  • the splayed spring tongues 19 on the first clamping element 1 engage in the assembled state in an undercut 13 'in the receptacle 13 on the second clamping element 2 a.
  • the plug-in element 5, 6 has a hollow region 21 in its foot region or in its push element 6. This hollow region 21 in the foot region of the plug element 5, 6 engages over a centering pin 22 in the mounted state.
  • the centering pin 22 is attached to the second clamping element 2 formed and found within the receptacle 13 and within the ring 14 on the second clamping element 2.
  • the design is such that the hollow portion or hollow portion 21 foot side of the plug pin 5, 6 or in the thrust element 6 and the centering pin 22nd are adapted to each other in size so that the plug-in pin 5, 6 largely engages the centering pin in question in the assembled state in a form-fitting manner.
  • the plug-in element 5, 6 can be released.
  • the previously compressed spring 7 with simultaneous relaxation ensures that the thrust nose ring 17 engages over the centering pin 22 together with the hollow portion 21.
  • the thrust element 6 and the thrust nose ring 17 fills the initially observed gap between the collar 20 and the centering pin 22.
  • the thrust nose ring 17 spreads the collar 20 and the spring tongues 19 on the head side.
  • the two clamping elements 1, 2 are anchored axially to each other and is the closure element 5, 6 in the mounted position according to Fig. 1 ,
  • the interlocking positioning elements 8, 9 provide for a supplementary radial fixing.
  • FIG. 2 Based on Fig. 2 Finally, one recognizes still individual front-side openings 23 of the tool holder 1, 2. About these openings 23 is at a rotation of the tool holder 1, 2 transported around the rotation axis R outside air for cooling in its interior. In fact, the openings 23 primarily communicate with the one or more receiving rings 11. As a result, the rotary tool 4 held in the receiving ring 11 is additionally cooled as a result of the air taken in.
  • the opening 23 is equipped with a cover 24.
  • the cover 24 is designed and designed so that in the region of the opening 23 during a rotation of the tool holder 1, 2 about the rotation axis R, a negative pressure is generated. As a result, a particularly large amount of cooling outside air is transported via the openings 23 into the interior of the tool holder 1, 2.
  • the cover 24 has the shape similar to an air scoop.
  • the cover 24 or the air scoop realized at this point covers the opening 23 and has a surface that rises in the opposite direction to the usual direction of rotation.
  • the tool holder 1, 2 in the example of the Fig. 1 usually rotated clockwise about the axis of rotation R.
  • the desired negative pressure forms in the region of a spoiler edge of the cover 24 or the air scoop realized at this point and thus cool outside air passes through the opening 23 into the interior of the tool holder 1, 2 and in particular into the one or more receiving rings 11.
EP20100003451 2010-03-30 2010-03-30 Dispositif d'outil rotatif entraîné de manière rotative Active EP2371487B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20100003451 EP2371487B1 (fr) 2010-03-30 2010-03-30 Dispositif d'outil rotatif entraîné de manière rotative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100003451 EP2371487B1 (fr) 2010-03-30 2010-03-30 Dispositif d'outil rotatif entraîné de manière rotative

Publications (2)

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EP2371487A1 true EP2371487A1 (fr) 2011-10-05
EP2371487B1 EP2371487B1 (fr) 2014-09-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012101525U1 (de) 2012-04-24 2013-07-26 Monti-Werkzeuge Gmbh Rotativ antreibbare Drehwerkzeugeinrichtung
US10807211B2 (en) 2016-06-20 2020-10-20 Monti-Werkzeuge Gmbh Rotary tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4219073A1 (fr) 2022-01-26 2023-08-02 Monti-Werkzeuge GmbH Dispositif outil rotatif à entraînement rotatif

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205265C1 (en) 1992-02-21 1993-08-26 Monti-Werkzeuge Gmbh, 5300 Bonn, De Rotary brush with brush holder and circular brush - has bristles on flexible brush strip, axial arms, and radial flanges
WO2001098029A2 (fr) 2000-06-21 2001-12-27 Bruno Schmitz Schleifmittelwerk Gmbh Outil et dispositif de fixation correspondant
DE202005007270U1 (de) 2005-05-03 2005-07-07 SUNMATCH INDUSTRIAL CO., LTD., Zhubei Verbindungsanordnung für Schleif- oder Polierelemente
DE202006013546U1 (de) 2006-09-01 2006-11-16 Sunmatch Industrial Co. Ltd. Spannvorrichtung zum Festspannen eines Drehwerkzeugs
EP1790434A1 (fr) * 2005-11-28 2007-05-30 Metabowerke GmbH Outil à main électrique avec dispositif d'accouplement rapide
EP1688061B1 (fr) 2005-02-03 2007-06-27 Monti-Werkzeuge Gmbh Outil rotatif
EP1859903B1 (fr) 2006-05-24 2009-01-21 Monti-Werkzeuge Gmbh Outil rotatif pour le traitement de surface
WO2009086594A1 (fr) * 2008-01-07 2009-07-16 Lachlan George Reid Mécanisme de fixation pour un disque de coupe

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205265C1 (en) 1992-02-21 1993-08-26 Monti-Werkzeuge Gmbh, 5300 Bonn, De Rotary brush with brush holder and circular brush - has bristles on flexible brush strip, axial arms, and radial flanges
WO2001098029A2 (fr) 2000-06-21 2001-12-27 Bruno Schmitz Schleifmittelwerk Gmbh Outil et dispositif de fixation correspondant
EP1688061B1 (fr) 2005-02-03 2007-06-27 Monti-Werkzeuge Gmbh Outil rotatif
DE202005007270U1 (de) 2005-05-03 2005-07-07 SUNMATCH INDUSTRIAL CO., LTD., Zhubei Verbindungsanordnung für Schleif- oder Polierelemente
EP1790434A1 (fr) * 2005-11-28 2007-05-30 Metabowerke GmbH Outil à main électrique avec dispositif d'accouplement rapide
EP1859903B1 (fr) 2006-05-24 2009-01-21 Monti-Werkzeuge Gmbh Outil rotatif pour le traitement de surface
DE202006013546U1 (de) 2006-09-01 2006-11-16 Sunmatch Industrial Co. Ltd. Spannvorrichtung zum Festspannen eines Drehwerkzeugs
WO2009086594A1 (fr) * 2008-01-07 2009-07-16 Lachlan George Reid Mécanisme de fixation pour un disque de coupe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012101525U1 (de) 2012-04-24 2013-07-26 Monti-Werkzeuge Gmbh Rotativ antreibbare Drehwerkzeugeinrichtung
US10807211B2 (en) 2016-06-20 2020-10-20 Monti-Werkzeuge Gmbh Rotary tool

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