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EP1990134B1 - Dispositif de traitement pour un outil de ponçage - Google Patents

Dispositif de traitement pour un outil de ponçage Download PDF

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Publication number
EP1990134B1
EP1990134B1 EP08008729A EP08008729A EP1990134B1 EP 1990134 B1 EP1990134 B1 EP 1990134B1 EP 08008729 A EP08008729 A EP 08008729A EP 08008729 A EP08008729 A EP 08008729A EP 1990134 B1 EP1990134 B1 EP 1990134B1
Authority
EP
European Patent Office
Prior art keywords
belt
machining apparatus
tool
abrasive
abrasive belt
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.)
Not-in-force
Application number
EP08008729A
Other languages
German (de)
English (en)
Other versions
EP1990134A1 (fr
Inventor
Jürgen Heesemann
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PL08008729T priority Critical patent/PL1990134T3/pl
Publication of EP1990134A1 publication Critical patent/EP1990134A1/fr
Application granted granted Critical
Publication of EP1990134B1 publication Critical patent/EP1990134B1/fr
Not-in-force 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
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18—Accessories

Definitions

  • the invention relates to a processing device with an adjustable by an adjusting spindle head with a spindle and a tool holder for connecting a replaceable tool with the spindle and with an insertable into the tool holder grinding tool, which is performed at least two rollers under tension and one of the Spindle driven abrasive belt has (see US 2003/126727 A ).
  • Such processing devices are used to make machining of a workpiece with different tools.
  • Such a processing device may be formed as a machining center in which a plurality of tools is available, wherein the spindle by the spindle head linearly adjustable, that is height adjustable, is arranged.
  • the spindle head can allow movement of the spindle in a plane perpendicular to the height adjustment (three-axis spindle head).
  • Such a machining center can thus also be used to carry out complicated machining operations, in particular also surface machining, also workpieces provided with curved surfaces.
  • a processing device of the type mentioned initially provides a mounted on a robot arm spindle head, the robot arm in turn can be directly or indirectly pivotable about several axes and possibly telescopically extendable, in a similar manner a complicated and numerically controlled machining of workpieces to enable.
  • Such processing devices also allow the surface treatment of workpieces made of different materials, such as wood.
  • processing tools such as drills, cutters o. The like.
  • a grinding tool that is not only designed as a brush, grinding wheel, etc., but allows higher quality grinding tasks, that an endlessly circulating Grinding belt is guided under tension by at least two rollers.
  • high-quality grinding tasks can be performed, for example by pressing the grinding belt against the surface or edge of a workpiece by means of a grinding shoe, as is the case, for example, with special edging machines.
  • a grinding tool is complicated and difficult to handle.
  • the abrasive belt has to be guided around the rollers under a certain defined pretension and that also a used abrasive shoe with a defined pressure force must act on the abrasive belt from the inside when the grinding is carried out on the outside of the revolving belt. If the sanding belt is used up, therefore, the change of the sanding belt requires considerable installation and, if necessary, adjustment effort. A similar problem arises when, in order to carry out different grinding tasks, in particular on the same workpiece, the pressure shoe used in the grinding tool or the pressure shoes used in the grinding tool have to be changed.
  • DE 39 04 704 C1 describes a grinding tool having a guided over at least two rollers under tension abrasive belt and is arranged at the free end of a robot arm.
  • the wheels of the grinding tool are adjustable by the grinding tool so that the sanding belt is guided laterally to the non-stored side of the rollers during circulation and finally falls off the rollers. This process is performed after the robotic arm has moved the abrasive tool over a waste bin into which the dropped abrasive belt may fall.
  • JP-A-05-008166 describes a guided on an adjustment grinding tool from which the abrasive belt can be withdrawn by a removal device and deliberately discarded, whereupon a new sanding belt is automatically mounted on the grinding device. Replacement of the grinding tool against another tool on the tool holder of the spindle head is not provided.
  • the present invention is therefore the object of a processing device of the type mentioned in such a way that the handling of the grinding tool, in particular the replacement of the abrasive belt and / or a pressure shoe or multiple pressure shoes is simplified and automated.
  • a processing device of the type mentioned is characterized in that a storage device is provided for the grinding tool, which is arranged outside a processing area for a workpiece and in which the grinding tool is movable, and that the grinding tool in the storage device with a Device for relaxation and possibly for removal of the abrasive belt is manageable.
  • the storage device according to the invention serves in a close manner to store the grinding tool when it is no longer needed to make the spindle free for subsequent tools. Accordingly, the grinding tool after removal from the spindle in the storage device is movable.
  • the storage device according to the invention is provided with a device with which the sanding belt of the deposited in the storage device - and conveniently fixed - grinding tool can be relaxed by clamping and / or pressure means acting on the abrasive belt, are acted upon in the direction away from the grinding belt , After the jigs no longer act on the sanding belt, a retainer can be retracted into the sanding belt to remove it from the sanding tool.
  • at least one pressure shoe can be removed from the grinding tool in a simple manner and replaced by another pressure shoe, for example with a different contour for the grinding process.
  • the processing device may be provided with a separate device for moving the grinding tool into the depositing device.
  • the storage device can be moved by means of the adjustment of the spindle of the processing device in the storage device, so that during the process, the grinding tool remains in the tool holder of the spindle head.
  • the storage device is provided in a preferred embodiment with actuators, which are designed to act on a clamping device of the abrasive belt and / or a pressure device for pressing a pressure shoe against the abrasive belt.
  • the actuators may be pneumatic cylinders in a practical embodiment.
  • the storage device is provided in a preferred embodiment with adjustable abutment means for engaging behind the relaxed sanding belt on its inside in the predetermined by the grinding tool and for clamping the sanding belt for transport.
  • the decrease of the abrasive belt thus takes place while maintaining the shape of the abrasive belt, as it sets on the grinding tool and is predetermined by the guide rollers of the grinding tool.
  • the adjustable abutment means which can take the relaxed abrasive belt in the storage device and in turn can tension, so that the abrasive belt can be transported in this form within the storage device, for example, to a dispenser for used abrasive belts.
  • the abutment devices can also be moved to a band store for new abrasive belts, in which the abrasive belts are preferably held in the same shape as that which is established in the grinding tool by the guide rollers.
  • the abutment means which can maintain this shape of the abrasive belt and tension it for transport, then allow the transport of the new abrasive belt to the grinding tool, where the abrasive belt can be reused by the abutment means in an opposite direction to the previous removal of the abrasive belt.
  • the sanding belts with the abutment means can be rotatable together about a pivot axis lying perpendicular to the pivot axis by 180 °, whereby the held with the abutment means under tension abrasive belt after removal from the grinding tool or for the purpose of insertion into the grinding tool by 180 ° can be rotated.
  • the tape storage has a plurality of individually superimposed abrasive belts, which are held in the predetermined by the grinding tool shape by means of movable stops on its storage level, when a lowermost storage level is set up for removal of a new sanding belt and if after removal the remaining sanding belts can be controlled downwards by one storage level.
  • the new sanding belt Due to the 180 ° rotatable abutment devices, the new sanding belt can be removed from the tape storage down by the investment equipment from below engage in the endless sanding belt and tension it for transport.
  • the use of the abrasive belt in the grinding tool can be done after rotation by 180 ° then from below, if this is convenient for handling in the storage device.
  • the method of the grinding tool in the storage device where it can be secured in a receptacle, also allows the review of the grinding tool during operation, that is driven by the spindle of the processing device. In this way, for example, the run of the sanding belt can be adjusted so that it rotates around the guide rollers stable. If the elements required for the adjustment are present in the depositing device, the structure of the grinding tool itself can be kept simple.
  • FIG. 1 shows in section a spindle 1 of a machining center forming a machining center.
  • the spindle 1 is formed at the lower free end for receiving a connecting means 2 in the form of a conical adapter.
  • the connecting means 2 ensures a rotationally fixed connection between the spindle 1 and a drive shaft 3 of a drive unit in the form of a pulley and a drive belt 5.
  • the spindle 1 is surrounded by a hollow cylindrical shaft which is rotatable independently of the spindle 1.
  • the grinding unit used in the machining center with the connecting means 2 has a support part 7 in the form of a support platform, which is connected via a cylindrical pivot bearing 8 with the hollow cylindrical axis 6, which is commonly referred to as "C-axis".
  • the support part 7 has a dowel pin 9, which is inserted into a corresponding blind bore 10 in the axis 6 and thus causes the rotationally fixed connection between the axis 6 and carrier part 7.
  • a chassis plate 11 is fixed, which extends parallel to the support platform and are rotatably mounted on the four guide rollers 12, 13, 14, 15 for a revolving, endless abrasive belt 16.
  • One of the guide rollers 12 is driven via the drive belt 5 and an associated, driven by the drive belt 5 pulley 17 and ensures the circulation of the grinding belt sixteenth
  • the sanding belt 16 is deflected at two places by two pressure shoes 18, 18 'from the straight line between two adjacent guide rollers 14, 15 and 12, 15, respectively, because the pressure shoes 18, 18' have the sanding belt 16 with a resilient bias relative to its circulating track Press P outward.
  • FIG. 2 on the grinding tool from below illustrates the corresponding structure. Schematically but it is indicated that in addition to the driven guide roller 12 and the guide roller 15 can be driven with a further drive belt 5 '. Both rollers are mounted with fixed axes of rotation. By contrast, one of the guide rollers, the guide roller 13, not stationary but slidably mounted radially outwardly in a telescopic frame 19, as illustrated by the double arrow in Fig. 2.
  • a compression spring 20, 20' is provided for the elastic pressure of the pressure shoes 18, 18 '.
  • the pressure of the guide roller 13 to the outside is also determined by a compression spring 21, the spring constant determines the voltage for the rotating abrasive belt 16.
  • FIG. 3 shows in a schematic plan view of a machining center with a spindle 1, which is mounted on a spindle head 22.
  • the spindle head 22 is movable on a traverse 23, which in turn is movable with a carriage 24 on a longitudinal rail 25.
  • the spindle 1, which is mounted vertically adjustable, both in height and at each point of a processing area 26 are moved.
  • a position of the traverse 23 is shown, which makes it possible to move the spindle 1 to a depositing device 27 which lies outside the processing region 26.
  • the storage device is equipped with a fixing device 28 for the support part 7 of the grinding tool.
  • a changing device 29 for pressure shoes 18, which are located in a pressure shoe magazine located on the storage device 27, a changing device 29 for pressure shoes 18, which are located in a pressure shoe magazine.
  • a belt changing device 31 is disposed centrally between the grinding tool carrying plate 7, a used abrasive belt discharging device 32, and a new abrasive belt storing belt 33.
  • the storage device 27 has in the region of the support part 7 of the grinding tool actuators 34, 35, with which the pressure shoe 18 against its pressure device and the pressure roller 13 in the direction of the abrasive belt 16 can be moved away.
  • FIG. 4 illustrates that said actuators 34, 35 are located on a removable cassette 36.
  • the removable cassette also carries at three corners rotatably mounted guide slots 37, which have a slightly less than semi-cylindrical lateral surface with which the abrasive belt 16 instead of the guide rollers 12, 14, 15 are held.
  • guide slots 37 In the remaining corner of the belt tension causing guide roller 13 are two substantially rectilinear slide 38 by means of pneumatic cylinders 39 retractable, which can take over the relaxed by the actuators 34, 35 sanding belt of the grinding tool in the form taken on the grinding tool and stretch for transport.
  • the grinding tool After the grinding tool has been retracted into the storage device 27, it is fixed there with the fixing device 28.
  • the actuators 34, 35 biasing forces acting on the sanding belt 16 are eliminated by displacement against the corresponding spring pressures, so that the sanding belt 16 is relaxed.
  • the abrasive belt By retracting the guide slots 37 and the slider 38, the abrasive belt is taken over by the changeable cartridge 36 and held under tension by the slides 38 after production of a low belt tension so that the abrasive belt 16 can be removed downwardly from the grinding tool.
  • the used abrasive belt can be transported by pivoting the belt changing device via the dispenser. By moving back the slider 38 by means of the pneumatic cylinder 39, the abrasive belt can be dropped on the dispenser 32.
  • abrasive belts 16 in the mold required in the abrasive tool to reuse a partially worn abrasive belt 16 later in conjunction with another pressure shoe 18 on the dispenser.
  • the tape changing device 31 further allows access to the tape memory 33, which is based on the Figures 5 and 6 is explained in more detail.
  • the tape storage 33 includes a plurality of abrasive belts 16 on a plurality of grinding belt planes, on which the respective grinding belt 16 is held by means of movable stops 40.
  • the thus formed tower of the tape storage is held on its upper side by an upper bearing 41.
  • the removal of a new sanding belt 16 and transfer to the removable cassette 36 is carried out by retracting the movable stops 40 of the lowest memory level, so that located on this lowest memory level sanding belt 16 falls down on the removable cassette 36 and there is absorbed by the receiving devices, guide slots 37 and slide 38.
  • the strip accumulator thus constructed is thus gradually discharged downwards, wherein after removal of the lowermost sanding belt 16, the sanding belts 16 located above can each fall downwards by retracting the relevant stops 40 around a belt storage plane and are held there by the extended stops 40 of this plane.
  • This extraction direction suggests filling the tape storage from the top.
  • the upper bearing 41 must be pivotally mounted. However, if the upper bearing 41 is pivoted, the tape storage 33 still needs to be held.
  • another pivot bearing 42 pivots from below against the tape storage 33, as indicated by a dot-dashed arrow in FIG. 5 is shown to hold the tape storage 33 during loading with new abrasive belts 16.
  • FIG. 6 illustrates the position of the slider 40 in the retracted position and the position in the extended position 40 'of the slider, which hold the endless abrasive belt 18 at the tape storage level in question.
  • FIG. 7 illustrates the position of the guide slots for the state of delivery of a used abrasive belt 18 in the dispenser 32.
  • the guide slots 37 are rotated with their part-cylindrical lateral surface inward. After pivoting the tape changing device 31 under the tape storage 33, the sanding belt 18 falls from the lowest tape storage level on the removable cassette 36.
  • the abrasive belt 18 is held and set for transport under a slight bias. In this form, the abrasive belt 18 can be spent on the support member 7 of the grinding tool and placed there on the guide rollers 12 to 15, whereby the replacement of the abrasive belt is completed.
  • the guide rollers 12 to 15 of the grinding tool are normally made spherical, in order to achieve a self-centering during the tape run.
  • an adjustment of the tape run by pivoting one of Guide rollers 12 to 15 by means of a pivoting device 43 may be appropriate, as in FIG. 9 is shown.
  • FIG. 8 shows an arrangement with which the tape can be checked.
  • a small upshiftable drive motor 45 can be coupled with a downwardly pointing spindle extension 46, so that a rotation of the grinding belt 16 can be started at idle.
  • a detection device 47 is switched to the position of the band edge in a fixed position, so that the position of the grinding belt 16 by means of one or more optical sensors 48 can be detected.
  • the constancy of the position of the band edge can be checked with the optical sensors 48 and adjusted by the pivoting device 43.
  • the adjusting screw 44 can be secured in the usual way via a tension spring loaded with friction, so that it maintains its position during the life of the grinding tool and the correct tape is secured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Disintegrating Or Milling (AREA)

Claims (11)

  1. Dispositif d'usinage comprenant, agencé réglable par un dispositif de réglage, un emmanchement d'outil (22) ayant une broche (1) et un positionneur d'outil (2) pour relier à la broche (1) un outil interchangeable, et comprenant un outil de ponçage qui peut être monté dans le positionneur d'outil (2) et qui présente une bande abrasive (16) laquelle est tenue sous tension autour d'au moins deux galets (12 à 15) et peut être entraînée par la broche (1), caractérisé en ce qu'il est prévu pour l'outil de ponçage un dispositif de dépôt (27) qui est agencé en-dehors d'une région d'usinage (26) pour une pièce, et dans lequel l'outil de ponçage peut être amené, et en ce que l'outil de ponçage est manipulable dans le dispositif de dépôt (27) avec un dispositif de détente de la bande abrasive (16).
  2. Dispositif d'usinage selon la revendication 1, caractérisé en ce que l'outil de ponçage peut être amené dans le dispositif de dépôt (27) au moyen du dispositif de réglage (23, 24).
  3. Dispositif d'usinage selon la revendication 1 ou 2, caractérisé en ce que le dispositif de dépôt (27) est muni d'actionneurs (34, 35) qui sont formés pour agir sur un dispositif de tension de la bande abrasive (16) et/ou sur un dispositif de pression destiné à appuyer un sabot presseur (18) contre la bande abrasive (16).
  4. Dispositif d'usinage selon la revendication 3, caractérisé en ce que les actionneurs (34, 35) sont des cylindres pneumatiques.
  5. Dispositif d'usinage selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif de dépôt (27) est muni de dispositifs d'appui (37, 38) réglables pour prendre par derrière sur sa face intérieure la bande abrasive (16) détendue dans sa forme imposée par l'outil de ponçage, et pour tendre la bande abrasive (16) pour le transport.
  6. Dispositif d'usinage selon la revendication 5, caractérisé en ce que les dispositifs d'appui (37, 38) peuvent être amenés à un dispositif de remise (32) pour bandes abrasives (16) usagées.
  7. Dispositif d'usinage selon la revendication 6, caractérisé en ce que les dispositifs d'appui (37, 38) peuvent ensuite être amenés à un magasin de bandes (33) pour nouvelles bandes abrasives (16).
  8. Dispositif d'usinage selon l'une des revendications 5 à 7, caractérisé en ce que le déplacement des dispositifs d'appui (37, 38) est un mouvement rotatif autour d'un axe de rotation.
  9. Dispositif d'usinage selon la revendication 8, caractérisé en ce que les dispositifs d'appui (37, 38) peuvent être pivotés à 180° autour d'un axe de pivotement s'entendant perpendiculairement à l'axe de rotation.
  10. Dispositif d'usinage selon l'une des revendications 5 à 9, caractérisé en ce que les dispositifs d'appui (37, 38) sont agencés sur une cartouche de changement (36).
  11. Dispositif d'usinage selon l'une des revendications 7 à 10, caractérisé en ce que le magasin de bandes (33) présente plusieurs bandes abrasives (16) agencées séparément les unes sur les autres, qui sont maintenues dans leur plan de stockage dans la forme imposée par l'outil de ponçage au moyen de butées (40) déplaçables, en ce qu'un plan de stockage inférieur est aménagé pour le prélèvement d'une nouvelle bande abrasive (16) et en ce qu'après le prélèvement, les bandes abrasives (16) restantes peuvent être décalées d'un plan de stockage vers le bas.
EP08008729A 2007-05-11 2008-05-09 Dispositif de traitement pour un outil de ponçage Not-in-force EP1990134B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08008729T PL1990134T3 (pl) 2007-05-11 2008-05-09 Urządzenie obróbkowe z narzędziem szlifierskim

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007022582A DE102007022582A1 (de) 2007-05-11 2007-05-11 Bearbeitungsvorrichtung mit einem Schleifwerkzeug

Publications (2)

Publication Number Publication Date
EP1990134A1 EP1990134A1 (fr) 2008-11-12
EP1990134B1 true EP1990134B1 (fr) 2010-11-24

Family

ID=39577854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08008729A Not-in-force EP1990134B1 (fr) 2007-05-11 2008-05-09 Dispositif de traitement pour un outil de ponçage

Country Status (6)

Country Link
EP (1) EP1990134B1 (fr)
AT (1) ATE489197T1 (fr)
DE (2) DE102007022582A1 (fr)
ES (1) ES2353999T3 (fr)
PL (1) PL1990134T3 (fr)
PT (1) PT1990134E (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011100972B4 (de) * 2011-05-10 2013-02-28 Sepotec Maschinenbau Gmbh Bandschleifmaschine mit zusätzlicher Radienschleifvorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3904704C1 (en) * 1989-02-16 1990-04-26 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De Device for the mechanised, independent fitting of a new endless grinding belt onto a freely movable belt-grinding machine
JPH04331060A (ja) * 1990-10-25 1992-11-18 Mas Fab Liechti & Co Ag マシニングセンタ
JPH058166A (ja) * 1991-06-28 1993-01-19 Mitsubishi Heavy Ind Ltd 翼自動ベルト研磨装置用ベルト自動交換装置
DE4311534A1 (de) * 1993-04-07 1994-10-13 Reichenbacher Gmbh Bandschleifaggregat
JP3746432B2 (ja) * 2001-03-01 2006-02-15 株式会社牧野フライス製作所 接合面の加工方法及び装置
DE20204285U1 (de) * 2002-03-18 2002-07-04 Paul Ott Gmbh Maschinenfabrik, Lambach Vorrichtung zur Lagerung von Kantenmagazinen

Also Published As

Publication number Publication date
PT1990134E (pt) 2010-12-23
DE102007022582A1 (de) 2008-11-20
ES2353999T3 (es) 2011-03-09
ATE489197T1 (de) 2010-12-15
EP1990134A1 (fr) 2008-11-12
DE502008001858D1 (de) 2011-01-05
PL1990134T3 (pl) 2011-05-31

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