EP2210720B1 - Dispositif de fixation d'outil de rotation fonctionnant par friction - Google Patents

Dispositif de fixation d'outil de rotation fonctionnant par friction Download PDF

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Publication number
EP2210720B1
EP2210720B1 EP20100000247 EP10000247A EP2210720B1 EP 2210720 B1 EP2210720 B1 EP 2210720B1 EP 20100000247 EP20100000247 EP 20100000247 EP 10000247 A EP10000247 A EP 10000247A EP 2210720 B1 EP2210720 B1 EP 2210720B1
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EP
European Patent Office
Prior art keywords
clamping
transmission element
force transmission
shaft
force
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
EP20100000247
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German (de)
English (en)
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EP2210720A1 (fr
Inventor
Johann Felder
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.)
Felder KG
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Felder KG
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Publication date
Application filed by Felder KG filed Critical Felder KG
Publication of EP2210720A1 publication Critical patent/EP2210720A1/fr
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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
    • 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

Definitions

  • the invention relates to a device for fastening a rotary tool according to the preamble of independent claim 1.
  • Such a device is the DE 42 09 146 A1 refer to.
  • reduction mechanisms are already known from the prior art, which convert the force from the power transmission element to the core pin in a certain ratio or transfer.
  • the reduction mechanisms for example, multi-stage planetary gear ( DE 37 00 968 A1 ), Gear with partially eccentrically arranged sprockets ( EP 0 588 483 A2 ) and hydraulic tensioning devices ( EP 0 324 357 A2 and EP 1 990 146 A2 ) on.
  • the first two types of reduction mechanisms are very expensive to manufacture and require a precise installation of the Planetenrad- or sprocket mechanism. In particular, ensuring the tightness of the hydraulic tensioning devices is problematic because hydraulic fluid often leaks in use.
  • Fonts in which a power reduction mechanism is disposed on the shaft-remote side of the rotary tool are those mentioned above DE 42 09 146 A1 and the DE 103 18 316 A1 .
  • a significant advantage of these embodiments is that compared to the former writings the reduction force effect is achieved by a simple frictional engagement and not by positive engagement or other forces, such as hydraulic power.
  • the main advantage is that the entire force reduction mechanism in the front, welienabgewandten flange (clamping device) is arranged integrally or formed.
  • these devices for attaching a rotary tool in all material processing machines are easy to retrofit. There is no need to form a separate installation space in the area of the shaft which is complicated to construct, but it can be screwed in as standard to the shaft of the core bolts.
  • the object of the invention is therefore to provide a comparison with the prior art improved device for attaching a rotary tool.
  • this device should have a relatively simple structure and cause no problems with hydraulic fluid or other reduction mechanisms.
  • the force transmission element is designed and arranged for tool-free manual operation by a user. This can preferably take place in that the force transmission element is designed in the form of a turntable or a clamping nut.
  • a further preferred embodiment may provide that by turning the power transmission element in the clamping direction of the core pin in the shaft is screwed to the stop and moves by continued rotation of the power transmission element in the clamping direction of the power reduction mechanism, the clamping disk relative to the core pin in the direction of the shaft. That means it must - especially against the DE 28 23 609 - No tools are used and it can be achieved by pure actuation of the power transmission element, both the normal bias and the main voltage of the rotary tool.
  • the best way to attach the rotary tool works when the power transmission element is in the fully open position. In this open position is made possible by the relatively high friction between the power transmission element and clamping disk, the indirect screwing of the core pin into the shaft. But this screwing can also be done by directly attacking the clamping disc.
  • both possibilities of manual screwing of the Kembolzen are given in the shaft, in the end, the entire clamping device - regardless of which part is actuated - can be fastened in the shaft.
  • the tensioning direction is the direction in which the power transmission member is moved by rotating in the direction of the shaft (during pretensioning) or in the direction of the tensioning disk (in the case of main tensioning).
  • An imposing embodiment variant of the present invention can provide that the force transmission element, preferably via a stop extension, in the clamping movement clamping or wedge elements of the power reduction mechanism so in the direction of corresponding wedge surfaces of the clamping plate and the core pin moves, that the clamping plate in the axial direction moved relative to the core pin to the rotary tool and this clamped between clamping plate and contact element.
  • the core pin is screwed all the way into the shaft and the clamping plate is moved by the power reduction mechanism with respect to the core pin closer to the shaft, the distance between the clamping plate and contact element is reduced, whereby the clamping tool and contact element located rotary tool with high force is clamped or clamped.
  • a preferred embodiment variant can provide that the clamping elements are designed in the form of balls, wherein at least one clamping ball is directly acted upon by the clamping movement of the force transmission element of this.
  • the clamping element may be designed as a kind of wedge.
  • the power transmission can preferably be further carried out such that further, concentrically pressed out to the outside, preferably smaller clamping balls are arranged around the loadable by the force transmission element clamping ball, which bear against the wedge surfaces of the clamping disk and the Kem-bolt.
  • a further embodiment can provide that the wedge surfaces of the clamping disk are arranged on a separate receiving bushing of the clamping disk.
  • the power reduction mechanism generates a clamping force between 10 and 30 kN, preferably between 15 and 25 kN, particularly preferably about 20 kN.
  • the clamping device together with the power transmission element, power reduction mechanism, clamping disk and Kembolzen is formed as a one-piece component.
  • Fig. 1 the shaft 3 (drive spindle) of the material processing machine is shown in the right area.
  • the contact element 4 is arranged with the contact surface 18 'in the left area.
  • the rotary tool 2 is clamped by inserting the clamping device 5 through the rotary tool 2 and into the shaft 3 between the abutment surface 18 'of the contact element 4 and the contact surface 18 of the clamping disk 6.
  • the application element 4 can be removed from the shaft 3.
  • the contact element 4 can be adapted to its size.
  • additional torque transmission elements not shown) on the contact element 4, via which a direct torque transmission from the shaft 3 via the contact element 4 on the rotary tool 2 can be done. The torque transmission is thereby not only dependent on the deadlock between clamping disk 6 and rotary tool 2.
  • the tensioning device 5 generally consists of the tension pulley 6, which comprises an integral via the Allen screws 10 intermediate flange 6a, the Kembolzen 7 and the power reduction mechanism 9, said force reduction mechanism 9 is set by the force transmission element 8 in motion and thereby the axial distance between the clamping plate 6 and Kembolzen 7 changed.
  • the power transmission element 8 (turntable or clamping nut) is connected via cylinder screws 17 (and an intermediate sealing ring 8b) with the intermediate flange 6a of the clamping disk 6.
  • the intermediate flange 6a is axially coupled by means of heavy-duty pins 15 with the Kembolzen 7.
  • the receiving bushing 11 has the wedge surfaces 14 and the Kembolzen 7, the wedge surfaces 14 'for the clamping balls 13.
  • the Kembolzen 7 is connected via the core pin thread 24 with the shaft 3, not shown here.
  • Fig. 3 can be seen how this core bolt thread 24 is screwed through the rotary tool 2 through in the shaft 3 and can be prestressed.
  • Fig. 3 is the rotary tool 2 is not fully clamped. However, there are already the two abutment surfaces 18 and 18 'on the rotary tool 2. Like in this one Fig. 3 shown, the entire drive shaft or shaft 3 rotates together with the rotary tool 2 and the clamping device 5 about the axis X.
  • Fig. 4 is a detail area of the clamping device 5 from Fig. 3 shown.
  • the force transmission element 8 in the region of the centrally arranged abutment extension 23 has a thread 22 which corresponds to the intermediate flange 6a.
  • This intermediate flange 6a also preferably has three cheese-head screws 17, which in turn have delimitation extensions 20, which prevent complete delamination or release of the force-transmitting element 8 from the intermediate flange 6a with the delimitation extensions 21 of the force transmission element 8.
  • the sealing ring 8b direct rubbing of the metal surfaces of the power transmission element 8 and the intermediate flange 6 is prevented and also prevents penetration of dust or other materials into the gap.
  • the clamping device 5 forms a self-contained, one-piece, encapsulated component.
  • the power reduction mechanism 9 consists essentially of the large clamping ball 12 and the small clamping balls 13 and the corresponding with the small clamping balls 13 wedge surfaces 14 and 14 'of the receiving bushing 11 and the Kembolzens 7.
  • the clamping ball 12 is on the one hand by Anschtagfortsatz 23 of the power transmission element 8 and on the other hand acted upon by the spring 16.
  • the distance A between the corresponding with the clamping balls 13 wedge surfaces 14 and 14 ' is increased, whereby the clamping plate 6 is moved with respect to the Kembolzen 7 (and the power transmission element 8) in the direction of the shaft 3 and thus the rotary tool 2 with a force of preferably about 20 kilonewtons between the abutment surfaces 18 and 18 'of the contact element 4 and the clamping disk 6 is clamped or clamped.
  • the force from the clamping ball 12 on the clamping balls 13 is in a ratio of 1; 2.5 distributed, wherein the compressive force on the grooves (wedge surfaces 14) of the receiving socket 11 is distributed. The force builds up along these grooves by moving the clamping balls 13, whereby the axial pressure is increased.
  • the force is reduced by the clamping ball 12 on the clamping balls 13 by turning the power transmission element 8 by the ball 12 is moved by the spring 16 in the direction of force transmission element 8 when unscrewing, whereby the distance A between the wedge surfaces 14th and 14 'is reduced and thus the biasing force on the rotary tool 2 is reduced.
  • the force transmission element 8 is rotated as far as the intermediate flange 6a until the boundary extensions 20 and 21 touch.
  • An alternative embodiment may provide that approximately in the region of the sealing ring 8b, the thread 22 may be arranged between clamping disk 6 or flange 6a and the force transmission element 8, which means, however, a larger friction surface.
  • the reference numeral 25 shows the cylinder screw thread between the cylinder screw 17 and intermediate flange 6a.
  • the reference numeral 26 shows the Allen screw between Allen screw 10 and clamping flange 6a, the Allen screw 10, the clamping plate 6 connects to the intermediate flange 6a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Gripping On Spindles (AREA)

Claims (9)

  1. Dispositif servant à fixer un outil rotatif (2), en particulier une lame de scie circulaire, une fraise ou similaire, sur un arbre (3) d'une machine d'usinage de matériau, en particulier d'une machine à travailler le bois, comportant un élément d'appui (4) et un système de serrage (5), lesquels présentent respectivement une surface d'appui (18, 18'), entre lesquelles l'outil rotatif (2) peut être coincé, dans lequel le système de serrage (5) présente un disque de serrage (6) présentant la surface d'appui (18), un boulon de noyau (7) traversant au moins en partie le disque de serrage (6), pouvant être relié, en particulier pouvant être vissé axialement, à l'arbre (3) et un élément de transmission de force (8) servant à relier le boulon de noyau (7) à l'arbre (3), dans lequel l'élément de transmission de force (8) et le boulon de noyau (7) du système de serrage (5) sont reliés par friction grâce à un mécanisme de réduction de force (9) et dans lequel l'élément de transmission de force (8) et le mécanisme de réduction de force (9) sont disposés sur le côté opposé aux ondes de l'outil rotatif (2), caractérisé en ce que l'élément de transmission de force (8) est relié au disque de serrage (6) - de préférence à une bride intermédiaire (6a) du disque de serrage (6) - par l'intermédiaire d'un filetage (22).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'élément de transmission de force (8) est réalisé et est disposé par un utilisateur aux fins de l'actionnement manuel sans outil.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le boulon de noyau (7) peut être vissé dans l'arbre (3) jusqu'à la butée par la rotation du système de serrage (5), de préférence de l'élément de transmission de force (8), dans la direction de serrage, et en ce que grâce à la rotation prolongée de l'élément de transmission de force (8) dans la direction de serrage, le mécanisme de réduction de force (9) déplace le disque de serrage (6) dans la direction de l'arbre (3) par rapport au boulot de noyau (7).
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que grâce à l'actionnement, de préférence grâce à la rotation de l'élément de transmission de force (8) dans la direction de serrage ou dans la direction de relâchement, ledit élément de transmission de force peut être déplacé dans la direction axiale par rapport au disque de serrage (6).
  5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'élément de transmission de force (8) déplace de préférence par l'intermédiaire d'un prolongement de butée (23), lors du mouvement de serrage, des éléments de serrage ou des éléments de cale (12, 13) du mécanisme de réduction de force (9) de telle manière en direction des surfaces de cale (14, 14') correspondantes du disque de serrage (6) et du boulon de noyau (7) que le disque de serrage (6) se déplace dans la direction axiale par rapport au boulon de noyau (7) en direction de l'outil rotatif (2) et enserre ce dernier entre le disque de serrage (6) et l'élément d'appui (4).
  6. Dispositif selon la revendication 5, caractérisé en ce que les éléments de serrage (12, 13) sont réalisés sous la forme de sphères, dans lequel au moins une sphère de serrage (12) peut être soumise directement à l'action de l'élément de transmission de force (8) lors du mouvement de serrage de ce dernier.
  7. Dispositif selon la revendication 6, caractérisé en ce que d'autres sphères de serrage (13) de préférence de plus petite dimension pouvant être pressées de manière concentrique vers l'extérieur sont disposées autour de la sphère de serrage (12) soumise à l'action de l'élément de transmission de force (8), lesquelles sphères de serrage de plus petite dimension reposent au niveau des surfaces de cale (14, 14') du disque de serrage (6) et du boulon de noyau (7).
  8. Dispositif selon la revendication 7, caractérisé en ce que les surfaces de cale (14) sont disposées de préférence de manière à former des rainures au niveau de la douille de réception (11) du disque de serrage (6).
  9. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le mécanisme de réduction de force (9) génère une force de serrage comprise entre 10 et 25 kN, de préférence d'environ 20 kN.
EP20100000247 2009-01-21 2010-01-13 Dispositif de fixation d'outil de rotation fonctionnant par friction Active EP2210720B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT952009A AT507775B1 (de) 2009-01-21 2009-01-21 Reibschlüssige rotationswerkzeugbefestigungsvorrichtung

Publications (2)

Publication Number Publication Date
EP2210720A1 EP2210720A1 (fr) 2010-07-28
EP2210720B1 true EP2210720B1 (fr) 2012-06-27

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ID=42115851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100000247 Active EP2210720B1 (fr) 2009-01-21 2010-01-13 Dispositif de fixation d'outil de rotation fonctionnant par friction

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EP (1) EP2210720B1 (fr)
AT (1) AT507775B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110948582A (zh) * 2019-12-20 2020-04-03 惠州龙展机电有限公司 台式木工圆锯机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1079505A (fr) 1977-06-13 1980-06-17 Ernest J. Friedline Methode de montage de fraise
DE3700968A1 (de) 1987-01-15 1988-08-04 Bosch Gmbh Robert Spanneinrichtung zum axialen festspannen eines werkzeuges, insbesondere einer scheibe
DE58904372D1 (de) 1988-01-09 1993-06-24 Fein C & E Einrichtung zum spannen eines scheibenfoermigen werkzeugs.
JPH081805Y2 (ja) * 1991-03-20 1996-01-24 リョービ株式会社 工具の着脱装置
JP3280715B2 (ja) 1992-08-31 2002-05-13 大治郎 中村 締付け用ネジ
DE10318316A1 (de) * 2003-04-19 2004-10-28 Narex Česká Lípa a.s. Spannvorrichtung zum Festspannen eines Gegenstandes gegen einen Anschlag
EP1990146A3 (fr) 2007-05-09 2013-02-27 Felder KG Dispositif de fixation d'un outil de rotation
DE102007028892B3 (de) * 2007-06-20 2008-12-04 Metabowerke Gmbh Spanneinrichtung zum werkzeuglosen Festspannen

Also Published As

Publication number Publication date
AT507775B1 (de) 2010-08-15
EP2210720A1 (fr) 2010-07-28
AT507775A4 (de) 2010-08-15

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