EP2301716B1 - Système de finition doté d'une pièce usinée et bande de finition ainsi que procédé de traitement de finition d'une pièce usinée - Google Patents

Système de finition doté d'une pièce usinée et bande de finition ainsi que procédé de traitement de finition d'une pièce usinée Download PDF

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Publication number
EP2301716B1
EP2301716B1 EP20090012056 EP09012056A EP2301716B1 EP 2301716 B1 EP2301716 B1 EP 2301716B1 EP 20090012056 EP20090012056 EP 20090012056 EP 09012056 A EP09012056 A EP 09012056A EP 2301716 B1 EP2301716 B1 EP 2301716B1
Authority
EP
European Patent Office
Prior art keywords
finishing
workpiece
belt
finishing belt
segment
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
EP20090012056
Other languages
German (de)
English (en)
Other versions
EP2301716A1 (fr
Inventor
Erich Schillinger
Christof Weber
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.)
Supfina Grieshaber GmbH and Co KG
Original Assignee
Supfina Grieshaber GmbH and Co KG
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 Supfina Grieshaber GmbH and Co KG filed Critical Supfina Grieshaber GmbH and Co KG
Priority to EP20090012056 priority Critical patent/EP2301716B1/fr
Publication of EP2301716A1 publication Critical patent/EP2301716A1/fr
Application granted granted Critical
Publication of EP2301716B1 publication Critical patent/EP2301716B1/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
    • B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
    • 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
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
    • 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
    • B24B21/004—Machines or devices using grinding or polishing belts; Accessories therefor using abrasive rolled strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/008—Finishing manufactured abrasive sheets, e.g. cutting, deforming

Definitions

  • the invention relates to a finishing system comprising a workpiece and a finishing belt, wherein the workpiece has a workpiece axis and at least one to be machined, with respect to the workpiece axis radially outwardly facing surface portion which is spaced along this over a cover width radially outwardly from a covering portion of the workpiece is such that an undercut area is formed between the overlap portion and the surface portion.
  • finishing machining of the surface portion which is arranged in an undercut area and covered by a covering portion of the workpiece, is not possible or requires a considerable, wear-intensive curvature of the finishing tape.
  • finishing tapes with straight-line lateral delimitation finishing tapes, which have a serrated or wavy lateral boundary.
  • These finishing tapes have the advantage that the serrated or wavy lateral areas of the finishing tape can cling relatively low in tension to be machined radii.
  • these finishing tapes are not suitable for use in a finish system mentioned above, if a surface treatment in an undercut area is desired.
  • the object of the present invention is to provide a finishing system which permits the simplest possible machining of a surface section of the workpiece arranged in an undercut region.
  • a lateral edge of the finishing tape comprises at least one recess into which the overlapping portion of the workpiece along the overlap width inserted or introduced, and that seen in a transport direction of the finishing tape to the Recess adjacent trim band section can be introduced or introduced into the undercut region and brought or brought into operative contact with the surface section to be machined.
  • the finishing system according to the invention makes it possible to insert the overlapping portion of the workpiece into the recess of the lateral edge of the finishing strip and to introduce a finishing band portion adjacent to the recess into the undercut area and bring it into operative contact with the surface portion to be machined.
  • the finishing belt section which is in operative contact with the surface section to be machined can in this way be applied flatly to the workpiece and does not have to be curved around the transport direction of the finishing belt, as in the case of straight or wavy or jagged fining finishing belts. Due to the flat contact of the finishing belt section on the workpiece, high surface qualities are achieved on the one hand even in the surface section covered in the undercut region.
  • the finishing system according to the invention allows a particularly gentle handling of the finishing tape, which can be performed at least largely kinking and stress-free.
  • the recess is dimensioned such that, as seen in the overlapping width of the overlapping portion, this can be completely inserted into the recess, so that a machining of the surface portion up to a lateral boundary of the
  • Undercut area can be done.
  • the at least one recess has mutually spaced recess boundaries, which are each oriented transversely to the transport direction of the finishing tape, wherein the Aussparungungsbegrenzungen have a distance from each other, which is greater than a measured in the transport direction of the finishing tape thickness of the cover portion, so that the finishing belt is movable in the transporting direction when the overlapping portion is inserted into the recess.
  • the Aussparungungsbegrenzungen have a distance from each other, which is greater than a measured in the transport direction of the finishing tape thickness of the cover portion, so that the finishing belt is movable in the transporting direction when the overlapping portion is inserted into the recess.
  • This also has the advantage that, during a finishing operation, various portions of the finish belt section may engage the workpiece to remove worn portions of the finish belt from the workpiece and bring fresh portions of the finish belt into operative contact with the workpiece.
  • the at least one recess can have straight-line or curved recess boundaries.
  • the Aussparungsbegrenzonne can also merge into each other continuously.
  • the surface portion of the workpiece to be machined is an annular surface portion, so that a relative movement between the workpiece and the finishing belt is made possible in particular by a rotation of the workpiece about the workpiece axis.
  • the overlapping portion is annular or ring segment-shaped and preferably arranged coaxially to the machined surface portion. This results in an undercut area, which is rotationally symmetrical with respect to the workpiece axis of the workpiece.
  • the finishing belt has at least two consecutive, mutually separate recesses, viewed in the transport direction of the finishing belt, and if different regions of the overlapping section can be inserted into different recesses or are inserted in different recesses. This makes it possible to provide a supply of fresh finishing tape in spaces radially outside the covering portion, to supply this to the surface portion to be processed and to collect used finishing tape radially outside the covering portion.
  • At least one pressing element is provided for pressing the finishing strip against the surface section to be processed, and that a depth measured in the pressing direction and a measured height of the pressing element measured in the transport direction of the finishing tape are dimensioned so low that the pressure element at least along part of its width in the undercut area is plunged. In this way it is possible, even in the region of the undercut, to press the finishing belt in a reliable manner against the surface section to be processed, without the pressure element colliding with the covering section of the workpiece.
  • the invention further relates to a method for finish machining a workpiece by means of a finishing strip, wherein the workpiece has a workpiece axis and at least one to be machined, with respect to the workpiece axis radially outwardly facing surface portion which is spaced to this radially outwardly overlapped by a cover portion of the workpiece is such that an undercut area is formed between the overlap portion and the surface portion.
  • the present invention is based on the further object of providing a method for finishing machining a workpiece by means of a finishing strip, which permits the simplest possible machining of a surface section of the workpiece arranged in an undercut region.
  • a lateral edge of the finishing tape comprises at least one recess into which the overlapping portion of the workpiece along the overlap width is introduced, and that in a transport direction of the finishing tape to the recess adjacent finishing tape section in introduced the undercut area and brought into operative contact with the surface to be processed portion.
  • the pressure element and / or the finishing belt is driven to oscillate in a direction transverse to the transport direction of the finishing belt.
  • the oscillatory movement or the oscillatory movements are preferably superimposed on a relative movement which arises as a result of rotation of the workpiece about the workpiece axis. By superimposing several relative movements particularly high surface qualities can be achieved.
  • the invention further relates to the use of a finishing system described in the introduction for use in a method described above.
  • FIG. 1 In the FIG. 1 is shown in total provided with the reference numeral 10 workpiece.
  • the workpiece 10 is rotationally symmetrical and has a central workpiece axis 12.
  • the workpiece 10 may be formed in particular as a casting or as a formed part.
  • the workpiece 10 has an annular surface 14 that points radially outwardly with respect to the workpiece axis 12.
  • the surface 14 is in particular cylinder jacket-shaped.
  • the surface 14 includes a surface portion 16 which is radially outwardly covered by a cover portion 18 of the workpiece 10.
  • the overlapping portion 18 and the surface portion 16 are spaced apart from each other so that an undercut 20 is formed between the surface portion 16 and the overlapping portion 18.
  • the overlay portion 18 covers the surface portion 16 with a overlap width 22 that extends from a free end 24 of the overlay portion 18 to an undercut boundary surface 26 of an undercut boundary 28.
  • the surface section 16 arranged in the undercut region 20 comprises a radially outwardly curved annular section 16a, which can also be finish-machined in the course of the finishing machining of the surface 16 described below.
  • FIG. 2 a top view of a finishing tape 30 is shown.
  • the finishing tape 30 extends along a finish tape longitudinal axis 32 along which the finishing tape 30 in a transport direction 34 and / or a transport direction 36 opposite thereto is movable.
  • the finishing tape 30 has a known layer structure with a carrier layer and with an abrasive layer.
  • the finishing belt 30 has a first, straight-line lateral boundary 38, which extends parallel to the finishing belt longitudinal axis 32.
  • the finishing belt 30 also has a second boundary 40.
  • successive recesses 42, 44 are provided in the transport direction 34 or 36.
  • Each mutually adjacent recesses 42, 44 define in the transport direction 34 or 36 seen a finishing belt section 46th
  • the recesses 42, 44 have the effect that a finish belt width 48 measured perpendicular to the finish belt longitudinal axis 32 at the level of the finish belt section 46 is greater than a finish belt width 50 measured perpendicular to the finish belt longitudinal axis 32 at the level of a recess 42, 44. It is preferred that the finish belt width 48 exceeds the finish band width 50 at least by the overlap width 22 of the workpiece 10.
  • the recesses 42, 44 have in the transport direction 34 or 36 of the finishing tape 30 successive recess boundaries 52, 54, which have a distance 56 from each other.
  • the distance 56 it is preferable for the distance 56 to be at least as great as a thickness 58 of the covering section 18 measured in the transport direction 34 or 36 of the finishing strip 30.
  • the distance 56 is greater than the thickness 58 also be measured in radial direction to the workpiece axis 12.
  • the recesses 42, 44 may, as shown in the drawing, be limited in a straight line. However, it is also possible that the recesses 42, 44 have curved boundaries and in particular are U-shaped limited.
  • the boundary 38 opposite the second boundary 40 also comprises recesses, which in FIG. 2 shown with dashed lines and designated by reference numerals 60, 62.
  • recesses which are arranged in the region of mutually opposite borders 38, 40, are arranged at the same height with respect to the finishing tape longitudinal axis 32.
  • the recesses 42 and 60 are arranged at the same height and the recesses 44 and 62.
  • a finishing system 64 that includes a workpiece 10 described above and a finishing belt 30 described above.
  • the finish system 64 includes a finish belt stocker 66 for fresh finishing tape and a finishing belt collector 68 for spent finishing tape.
  • the finishing belt 30 can be unwound from the finishing belt 66 and can be wound onto the finishing belt collector 68.
  • the finish system 64 further includes a pressing member 70 which serves to press the finishing tape 30 against the surface 14.
  • the pressing element 70 serves for pressing a finishing belt section 46 arranged between two recesses 42, 44 against the surface section 16 of the workpiece 10.
  • the pressing element 70 has a depth 74 measured in a pressing direction 72 and a height 76 measured in the transport direction 34, 36 of the finishing strip 30. Furthermore, the pressing element 70 has a width 78, which is measured in parallel to the workpiece axis 12 direction.
  • the overall depth 74 and the overall height 76 are so low that the pressing element 70 can be immersed along a part of its width 78 in the undercut area 20 arranged between the surface section 16 and the covering section 18.
  • the measured at the level of the finishing belt portion 46 finishing belt width 48 also corresponds to the width 78 of the pressing member 70.
  • the finishing belt is unwound from the finishing belt supply 66 and fed in the direction of the workpiece 10.
  • a first recess 42 is so arranged that a first portion 80 of the overlap portion is inserted into a first recess 42 and a second portion 82 of the overlap portion 18 in a second recess 44.
  • a finishing belt section 46 arranged between the recesses 42, 44 is arranged in the undercut region 20 of the workpiece 10.
  • the finishing belt 30 is fed to the finishing belt collector 68.
  • the pressing member 70 is pressed against the carrier layer of the finishing tape 30, so that the abrasive layer of the finishing tape 30 comes into operative contact with the surface 14 and with the surface portion 16.
  • the pressure element 70 is immersed in a direction parallel to the workpiece axis 12 proportionately in the undercut portion 20.
  • the workpiece 10 is driven in rotation and the surface 14 machined with the surface portion 16 finishing.
  • the finishing belt 30 With sufficient generous dimensioning of the distance 56 between successive Aussparungsbegrenzungen 52, 54 of a recess 42, 44, it is possible to move the finishing belt 30 in the transport direction 34 or 36, wherein the cover portion 18 is inserted into the recesses 42, 44.
  • the rotational movement of the workpiece 10 can be superimposed with an oscillating movement of the pressing element 70 and / or the finishing strip 30 in a direction parallel to the workpiece axis 12, in order to be able to achieve particularly high surface qualities.
  • the pressing element 70 is moved parallel to the workpiece axis 12, so that it emerges from the undercut area 20. Subsequently, the workpiece 10 can be removed from the workpiece holder. To prepare a further finishing operation, it is advantageous if the finishing belt 30 is moved by a feed rate which corresponds to the distance between two successive recesses 42, 44. As a result, a fresh finishing belt section 46 is available, with which a further workpiece 10 can be machined.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Claims (14)

  1. Système de finition (64), comprenant une pièce (10) et une bande de finition (30), ladite pièce (10) présentant un axe de pièce (12) et au moins une portion de surface (16) à usiner qui, par rapport audit axe de pièce (12), montre radialement vers l'extérieur et qui est recouverte suivant une largeur de recouvrement (22) radialement vers l'extérieur, à distance de celle-ci, par une portion de recouvrement (18) de la pièce (10) de sorte qu'une zone de contre-dépouille (20) est créée entre ladite portion de recouvrement (18) et ladite portion de surface (16), caractérisé par le fait qu'une bordure latérale (40) de ladite bande de finition comprend au moins un évidement (42, 44) dans lequel peut être ou est introduite ladite portion de recouvrement (18) de la pièce (10) suivant la largeur de recouvrement (22) et qu'une section de bande de finition (46) qui, vue dans une direction de transport (34, 36) de la bande de finition (30), est voisine de l'évidement (42, 44), peut être ou est introduite dans ladite zone de contre-dépouille (20) et peut être ou est mise en contact actif avec la portion de surface (16) à usiner.
  2. Système de finition (64) selon la revendication 1, caractérisé par le fait que ledit au moins un évidement (42, 44) présente des limitations d'évidement (52, 54) qui sont espacées les unes des autres et orientées chacune transversalement à la direction de transport (34, 36) de la bande de finition (30), lesdites limitations d'évidement (52, 54) présentant une distance (56) les unes par rapport aux autres qui est supérieure à une épaisseur (58) de ladite portion de recouvrement (18), mesurée dans la direction de transport (34, 36) de la bande de finition (30), de sorte que la bande de finition (30) peut être déplacée dans la direction de transport (34, 36) lorsque la portion de recouvrement (18) est introduite dans ledit évidement (42, 44).
  3. Système de finition (64) selon l'une quelconque des revendications précédentes, caractérisé par le fait que ladite portion de surface (16) à usiner de la pièce (10) est annulaire.
  4. Système de finition (64) selon l'une quelconque des revendications précédentes, caractérisé par le fait que ladite portion de recouvrement (18) est en forme d'anneau ou de segment d'anneau.
  5. Système de finition (64) selon l'une quelconque des revendications précédentes, caractérisé par le fait que ladite bande de finition (30) présente au moins deux évidements (42, 44) qui, vus dans la direction de transport (34, 36) de la bande de finition (30), sont successifs et espacés les uns des autres et que des zones différentes (80, 82) de ladite portion de recouvrement (18) peuvent être introduites dans des évidements différents (42, 44) ou sont introduites dans des évidements différents (42, 44).
  6. Système de finition (64) selon l'une quelconque des revendications précédentes, caractérisé par le fait qu'il comprend au moins un élément de pression (70) pour plaquer la bande de finition (30) contre ladite portion de surface (16) à usiner, et qu'une profondeur constructive (74) de l'élément de pression (70) mesurée dans la direction de pression (72) et une hauteur constructive (76) de celui-ci mesurée dans la direction de transport (34, 36) de la bande de finition (30) sont dimensionnées d'une manière tellement faible que ledit élément de pression (70) puisse être plongé, au moins le long d'une partie de sa largeur constructive (78), dans ladite zone de contre-dépouille (20).
  7. Procédé d'usinage de finition d'une pièce (10) au moyen d'une bande de finition (30), ladite pièce (10) présentant un axe de pièce (12) et au moins une portion de surface (16) à usiner qui, par rapport audit axe de pièce, montre radialement vers l'extérieur et qui est recouverte radialement vers l'extérieur, à distance de celle-ci, par une portion de recouvrement (18) de la pièce (10) de sorte qu'une zone de contre-dépouille (20) est créée entre ladite portion de recouvrement (18) et ladite portion de surface (16), caractérisé par le fait qu'une bordure latérale (40) de ladite bande de finition (30) comprend au moins un évidement (42, 44) dans lequel est introduite ladite portion de recouvrement (18) de la pièce (10) suivant la largeur de recouvrement (22) et qu'une section de bande de finition (46) qui, vue dans une direction de transport (34, 36) de la bande de finition (30), est voisine de l'évidement (42, 44), est introduite dans ladite zone de contre-dépouille (20) et est mise en contact actif avec la portion de surface (16) à usiner.
  8. Procédé selon la revendication 7, caractérisé par le fait que ledit au moins un évidement (42, 44) présente des limitations d'évidement (52, 54) qui sont espacées les unes des autres et orientées chacune transversalement à la direction de transport (34, 36) de la bande de finition (30), lesdites limitations d'évidement (52, 54) présentant une distance (56) les unes par rapport aux autres qui est supérieure à une épaisseur (58) de ladite portion de recouvrement (18), mesurée dans la direction de transport (34, 36) de la bande de finition (30), la bande de finition (30) étant déplacée dans la direction de transport (34, 36).
  9. Procédé selon la revendication 7 ou 8, caractérisé par le fait que ladite bande de finition (30) présente au moins deux évidements (42, 44) qui, vus dans la direction de transport (34, 36) de la bande de finition (30), sont successifs et espacés les uns des autres et que des zones différentes (80, 82) de ladite portion de recouvrement (18) sont introduites dans des évidements différents (42, 44).
  10. Procédé selon l'une quelconque des revendications 7 à 9, caractérisé par le fait que ladite pièce (10) est entraînée en rotation.
  11. Procédé selon l'une quelconque des revendications 7 à 10, caractérisé par le fait que ladite bande de finition (30) est plaquée par un élément de pression (70) contre la portion de surface (16) à usiner et que ledit élément de pression (70) est disposé de manière à ce qu'il plonge, au moins par sections, dans ladite zone de contre-dépouille (20).
  12. Procédé selon la revendication 11, caractérisé par le fait que ledit élément de pression (70) est entraîné de manière oscillante dans une direction transversale à la direction de transport (34, 36) de la bande de finition (30).
  13. Procédé selon l'une quelconque des revendications 7 à 12, caractérisé par le fait que ladite bande de finition (30) est entraînée de manière oscillante dans une direction transversale à la direction de transport (34, 36) de la bande de finition (30).
  14. Utilisation d'un système de finition (64) selon l'une quelconque des revendications 1 à 6, dans un procédé selon l'une quelconque des revendications 7 à 13.
EP20090012056 2009-09-23 2009-09-23 Système de finition doté d'une pièce usinée et bande de finition ainsi que procédé de traitement de finition d'une pièce usinée Not-in-force EP2301716B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20090012056 EP2301716B1 (fr) 2009-09-23 2009-09-23 Système de finition doté d'une pièce usinée et bande de finition ainsi que procédé de traitement de finition d'une pièce usinée

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Application Number Priority Date Filing Date Title
EP20090012056 EP2301716B1 (fr) 2009-09-23 2009-09-23 Système de finition doté d'une pièce usinée et bande de finition ainsi que procédé de traitement de finition d'une pièce usinée

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EP2301716A1 EP2301716A1 (fr) 2011-03-30
EP2301716B1 true EP2301716B1 (fr) 2013-04-17

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EP20090012056 Not-in-force EP2301716B1 (fr) 2009-09-23 2009-09-23 Système de finition doté d'une pièce usinée et bande de finition ainsi que procédé de traitement de finition d'une pièce usinée

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116430818B (zh) * 2023-06-05 2023-09-15 鲁控数字技术(山东)有限公司 基于多工位程控设备控制实现的产线自动生产方法及系统

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2947039A1 (de) * 1979-11-22 1980-12-04 Fritz Wilmsmeyer Gmbh & Co Kg Verfahren und vorrichtung zum abrunden der ecken an werkstuecken durch spanabhebende bearbeitung
US7169028B1 (en) 2005-11-02 2007-01-30 Barton Ii Kenneth A Flexible finishing shoe

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