EP3181293B1 - Outil de finition à capacité de coupe variable localement - Google Patents

Outil de finition à capacité de coupe variable localement Download PDF

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Publication number
EP3181293B1
EP3181293B1 EP16202745.2A EP16202745A EP3181293B1 EP 3181293 B1 EP3181293 B1 EP 3181293B1 EP 16202745 A EP16202745 A EP 16202745A EP 3181293 B1 EP3181293 B1 EP 3181293B1
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EP
European Patent Office
Prior art keywords
peripheral surface
cutting ability
workpiece
finishing
profile shape
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
EP16202745.2A
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German (de)
English (en)
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EP3181293A1 (fr
Inventor
Holger Steinwender
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.)
Thielenhaus Technologies GmbH
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Thielenhaus Technologies GmbH
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Filing date
Publication date
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Publication of EP3181293A1 publication Critical patent/EP3181293A1/fr
Application granted granted Critical
Publication of EP3181293B1 publication Critical patent/EP3181293B1/fr
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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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
    • B24B5/26—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding peculiarly profiled surfaces, e.g. bulged
    • 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
    • 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
    • B24B35/00—Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high 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
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
    • 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
    • B24D11/04—Zonally-graded surfaces

Definitions

  • the present invention relates to an apparatus and a method for finishing a peripheral surface of a shaft-shaped workpiece.
  • the device comprises a drive device for generating a rotational movement of the workpiece and a pressing device for pressing a finishing belt against the peripheral surface of the rotating workpiece, the finishing belt resting with a processing surface on the peripheral surface and the peripheral surface having a first profile shape.
  • the peripheral surface In order to avoid edge supports in the bearing, however, it is desirable for the peripheral surface to have a crowned shape in the area of the bearing points.
  • a crowned shape of the bearing points can already be achieved by appropriate pre-machining, with the crowned shape being produced during the pre-machining in that a machining surface of a grinding wheel machining the bearing point has a transverse shape corresponding to the crowning.
  • This procedure has the disadvantage that different grinding wheels have to be used for different degrees of crowning. So must for a corresponding grinding wheel must be kept available for each specific crowning profile and the grinding wheel must be replaced if the crowning profile changes. The corresponding grinding wheels also have to be dressed regularly due to wear, which results in additional costs.
  • JP 2003 071702 A the processing of a surface for a ball bearing track by means of a finishing belt is known.
  • the finish belt has a constant cutting ability in the axial direction, parallel to the axis of rotation of the workpiece. In the direction of rotation of the workpiece, on the other hand, the finishing belt has zones with different cutting ability. Such a finish belt itself has no influence on the profile shape of the ball bearing running surface.
  • a device and a method with the features of the preambles of the independent claims are known from JP 2003.
  • a finishing stone is known for machining a surface of a workpiece that is intended as a ball bearing raceway, the finishing stone having zones of different cutting ability.
  • the production of such finishing stones adapted for different ball tracks is very expensive.
  • JP 2003 089 047 A A device and a method with the features of the preamble of the respective independent claim is made JP 2003 089 047 A known.
  • the object of the present invention is therefore to solve the problems described in relation to the prior art and in particular to specify a device and a method with which the profile shape of the peripheral surfaces can be changed in a targeted manner during the finishing process, among other things in existing machines.
  • the object is achieved in particular by a device with the aforementioned features, wherein a spatial distribution of the cutting ability along an axis of rotation specifies a second profile shape of the peripheral surface that is intended after the final machining and differs from the first profile shape.
  • the basic idea of the present invention therefore deviates from the previous technical teaching, according to which a change in the profile shape predetermined by the pre-machining is to be avoided under all circumstances during the final machining. Rather, the invention provides that a change in the profile shape is deliberately achieved by a targeted spatial distribution of the cutting ability of the finishing strip used for finishing. In the areas with which more material is to be removed from the peripheral surface of the workpiece, the finishing belt has a higher cutting ability than in the areas with which less material is to be removed. Such finishing belts can easily be used in conventional finishing devices.
  • the invention also has the advantage that due to the desired change in the profile shape during the final machining, there is no need to change the profile shape during the pre-machining, so that the pre-machining can always be carried out with the same grinding wheel having a rectilinear transverse shape.
  • the tool is a finishing belt, which is pressed against the peripheral surface by means of a pressure shoe and which, as a consumable material, has always had to be replaced regularly. Since the profile shape to be achieved after finishing depends on the distribution of the cutting ability on the finishing belt, the geometry of the pressure surface of the pressure shoe pressing on the finishing belt preferably runs in a straight line in a direction parallel to the axis of rotation of the workpiece.
  • transverse shape of the pressure shoe is therefore in particular rectilinear.
  • a conventional pressure shoe can therefore be used in combination with the appropriate finishing belts to produce different profile shapes.
  • the local cutting ability in particular of the grains of the finishing strip, is distributed over the finishing strip in such a way that the first (initial) profile shape is changed to the second (final) profile shape during finishing.
  • more material is removed during the rotation of the workpiece at at least one axial location of the workpiece than at another axial location offset parallel to the axis of rotation.
  • finishing belt does not move in the axial direction of the workpiece during the rotation of the workpiece.
  • an oscillating drive device is designed to generate an oscillating relative movement between the peripheral surface of the workpiece and the finishing belt, directed transversely to the rotational movement of the peripheral surface, the finishing belt with the processing surface being in contact with the peripheral surface of the workpiece during the relative movement.
  • the cutting ability of the processing surface of the finishing belt is greatest at the edges of the processing surface and is smaller in the middle.
  • the cutting ability of the processing surface of the finishing belt is lowest at the edges of the processing surface and is greatest in the middle.
  • the edges refer to the edges in the axial direction of the workpiece, while the center is located between the edges.
  • the cutting ability of the processing surface of the finishing belt has at least three local maxima or minima transversely to the direction of the rotational movement of the peripheral surface. The most material is therefore removed from the peripheral surface of the workpiece at these three local maxima.
  • this also includes cutting ability at one point of the tool and no cutting ability at all at an adjacent point.
  • the decisive factor is that after finishing there is a different profile shape than before finishing due to the distribution of cutting ability on the finishing belt.
  • the processing surface of the finishing belt lying against the peripheral surface of the workpiece has at least one first area with a first cutting ability and at least one second area with a second cutting ability that differs from the first cutting ability.
  • the machining surface has the same local cutting ability in the entire first area and a second cutting ability that differs therefrom in the entire second area.
  • the second cutting ability can also be "0".
  • the second area of the processing surface then lies between two first areas of the processing surface. The desired distribution of the cutting ability is then achieved by the local arrangement of the first area in relation to the second area.
  • a parting line between the first area and the second area extends in a zigzag shape along the direction of the rotational movement of the peripheral surface.
  • the dividing line is wavy.
  • the finishing belt can be kept stationary in the axial direction of the workpiece during finishing. Alternatively, it can be provided that an oscillating relative movement is generated between the rotating finishing belt and the tool.
  • one of the tools described above can be used to carry out the method according to the invention.
  • the use of a tool for finishing a peripheral surface of a shaft-shaped workpiece is proposed, with the peripheral surface having a first profile shape and the machining surface of the tool having areas of different cutting ability, with a spatial distribution of the cutting ability being a second intended after finishing machining, different from the first profile shape Profile shape of the peripheral surface specifies.
  • the tool is a finishing belt, which is pressed against the peripheral surface of the workpiece by means of a pressure shoe.
  • a finishing belt can be used that has the features described above.
  • figure 1 shows a section of a workpiece 1 with a cylindrical peripheral surface 2 before finishing.
  • the profile shape of the peripheral surface 2 runs in a straight line.
  • a tool 4 is pressed by means of a pressing device 3 with its processing surface 5 on the peripheral surface 2 of the workpiece 1.
  • the workpiece 1 rotates about its axis of rotation and the tool 4 remains stationary.
  • the tool 4 is formed by a finishing belt 10 which is pressed against the peripheral surface 2 by means of a pressure shoe.
  • the tool 4 with the pressing device oscillates in the axial direction parallel to the axis of rotation of the workpiece 1 while the workpiece 1 rotates.
  • FIG 4 A top view of a finishing belt 10 is now shown above, which is pressed against the peripheral surface 2 of the workpiece 1 by means of a pressure shoe.
  • the finishing belt 10 has first areas 6 with a high local cutting ability and second areas 7 with a relatively lower local cutting ability. If the finish belt 10 is applied to the rotating workpiece 1 during finishing, the resulting material-removing cutting ability at the edges 8 is greater than in the middle 9 of the finish belt 10 Having course transverse to the direction of rotation of the workpiece 1, a change in the profile of the workpiece 1 are produced.
  • a workpiece 1 finished with the finishing belt 10 is in figure 4 shown below. It can be seen that the peripheral surface 2 of the workpiece 1 has a slightly convex profile shape after finishing.
  • FIGS Figures 6 and 7 Further examples of the arrangement of the first area 6 and the second area 7 are in FIGS Figures 6 and 7 shown.
  • the dividing line between the first areas 6 and the second areas 7 according to the embodiments according to Figures 4 and 5 runs zigzag, runs the dividing line between the first region 6 and the second region 7 according to the embodiment of FIG figure 7 wavy.
  • the first area 6 is, on the other hand, designed to be continuous and in this first area 6 a multiplicity of uniform second areas 7 are arranged.
  • the invention therefore provides that the cutting ability of the finishing belt is distributed on the processing surface in such a way that the cutting ability achieves a profile shape that deviates from the original profile shape and is to be produced during the finishing process.

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

Claims (7)

  1. Procédé de finition d'une surface périphérique (2) d'une pièce à usiner (1) de forme ondulée, au moyen d'une bande de finition (10) comportant une surface d'usinage, comprenant au moins les étapes suivantes consistant à :
    - entraîner la pièce à usiner (1) en un déplacement en rotation à l'aide d'un système d'entraînement,
    - presser la surface d'usinage (5) de la bande de finition (10) sur la surface périphérique (2) présentant une première forme de profil, à l'aide d'un dispositif de pression (3), la bande de finition (10) étant sélectionnée en fonction d'une deuxième forme de profil, prévue à l'issue de la finition, différente de la première forme de profil de la surface périphérique (2), une distribution dans l'espace de l'aptitude à la coupe de la surface d'usinage (5) de la bande de finition (10) le long d'un axe de rotation de la pièce à usiner (2) prédéfinissant la deuxième forme de profil prévue, sur au moins un endroit axial de la pièce à usiner (1) étant enlevée une plus grande quantité de matière que sur un autre endroit axial, décalé à la parallèle de l'axe de rotation, caractérisé en ce que la surface d'usinage (5) de la bande de finition (10) qui est adjacente à la surface périphérique (2) de la pièce à usiner (1) comporte au moins une première zone (6) faisant preuve d'une première aptitude à la coupe et au moins une deuxième zone (7) faisant preuve d'une deuxième aptitude à la coupe, se différenciant de la première aptitude à la coupe et une ligne de séparation entre la première zone (6) et la deuxième zone (7) le long de la direction du déplacement en rotation de la surface périphérique s'écoulant en forme de zigzag ou en forme d'onde.
  2. Dispositif de finition d'une surface périphérique (2) d'une pièce à usiner (1) de forme ondulée, comprenant un système d'entraînement destiné à produire un déplacement en rotation de la pièce à usiner (2) et un dispositif de pression (3), destiné à presser une bande de finition (10) sur la surface périphérique (2) de la pièce à usiner (1) en rotation, en cours de fonctionnement, par une surface d'usinage (5), la bande de finition (10) étant adjacente à la surface périphérique (2) et la surface périphérique (2) présentant une première forme de profil et la surface d'usinage (5) comportant des zones (6, 7) de différente aptitude à la coupe, une distribution dans l'espace de l'aptitude à la coupe le long d'un axe de rotation de la pièce à usiner (2) prédéfinissant une deuxième forme de profil prévue à l'issue de la finition, différente de la première forme de profil de la surface périphérique (2), en cours de fonctionnement, sur au moins un endroit axial de la pièce à usiner (1) étant enlevée une plus grande quantité de matière que sur un autre endroit axial, décalé à la parallèle de l'axe de rotation, caractérisé en ce qu'en cours de fonctionnement, la surface d'usinage (5) de la bande de finition (10) qui est adjacente à la surface périphérique (2) de la pièces à usiner (1) comporte au moins une première zone (6) faisant preuve d'une première aptitude à la coupe et au moins une deuxième zone (7) faisant preuve d'une deuxième aptitude à la coupe, se différenciant de la première aptitude à la coupe et une ligne de séparation entre la première zone (6) et la deuxième zone (7) le long de la direction du déplacement en rotation de la surface périphérique s'écoulant en forme de zigzag ou en forme d'onde.
  3. Dispositif selon la revendication 2, pour produire une deuxième forme de profil bombée à partir d'une première forme de profil rectiligne de la surface périphérique (2), l'aptitude à la coupe de la surface d'usinage de la bande de finition (10) étant la plus importante sur des bords (8) de la surface d'usinage (5) et étant plus faible au centre (9).
  4. Dispositif selon la revendication 2, pour produire une deuxième forme de profil concave à partir d'une première forme de profil rectiligne de la surface périphérique (2), l'aptitude à la coupe de la surface d'usinage (5) de la bande de finition (10) étant la plus faible sur des bords (8) de la surface d'usinage et étant la plus importante au centre (9).
  5. Dispositif selon la revendication 2, pour produire une deuxième forme de profil gothique à partir d'une première forme de profil régulièrement ronde de la surface périphérique (2), l'aptitude à la coupe de la surface d'usinage (5) de la bande de finition (10) comportant à la transversale de la direction du déplacement en rotation de la surface périphérique (2) au moins trois maxima ou minima locaux.
  6. Dispositif selon l'une quelconque des revendications 2 à 5, l'aptitude à la coupe locale de la surface d'usinage (5) de la bande de finition (10) étant prédéfinie par au moins l'un des paramètres suivants :
    - le type de grain
    - la matière du grain,
    - la taille de grain,
    - la densité du grain et
    - l'orientation du grain.
  7. Procédé selon la revendication 1, avec un outil présentant les caractéristiques de l'une quelconque des revendications 3 à 6.
EP16202745.2A 2015-12-18 2016-12-07 Outil de finition à capacité de coupe variable localement Active EP3181293B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015122189.6A DE102015122189A1 (de) 2015-12-18 2015-12-18 Finishwerkzeug mit lokal variierender Schnittigkeit

Publications (2)

Publication Number Publication Date
EP3181293A1 EP3181293A1 (fr) 2017-06-21
EP3181293B1 true EP3181293B1 (fr) 2022-10-12

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EP16202745.2A Active EP3181293B1 (fr) 2015-12-18 2016-12-07 Outil de finition à capacité de coupe variable localement

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EP (1) EP3181293B1 (fr)
DE (1) DE102015122189A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111971148A (zh) * 2018-03-14 2020-11-20 磨卡有限公司 用于研磨的方法和设备以及产品和所述产品的用途

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010041523A1 (en) * 2000-05-04 2001-11-15 Societe Des Procedes Et Machines Speciales Machine for grinding cylindrical bearing surfaces on parts using an abrasive belt
JP2003089047A (ja) * 2001-09-18 2003-03-25 Nissan Motor Co Ltd 曲面仕上げ加工方法および曲面仕上げ加工装置
CN2880385Y (zh) * 2006-02-21 2007-03-21 江宪宗 一种砂带
WO2016193534A1 (fr) * 2015-06-05 2016-12-08 Kwh Mirka Ltd Produit abrasif et un procédé de fabrication de celui-ci

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240232A (en) * 1977-12-30 1980-12-23 Giddings & Lewis, Inc. Coated abrasive superfinishing stone and method of making same
JPH03130367U (fr) * 1990-04-10 1991-12-27
DE59700607D1 (de) 1996-04-19 1999-12-02 Thielenhaus Ernst Gmbh & Co Kg Vorrichtung für die Feinschleifbearbeitung von Wellen, insbesondere Kurbelwellen
DE19850216A1 (de) * 1998-10-31 2000-05-04 Nagel Masch Werkzeug Verfahren und Vorrichtung zur Feinbearbeitung von im wesentlichen zylindrischen Werkstückoberflächen
JP2003071702A (ja) * 2001-09-05 2003-03-12 Nsk Ltd 玉軸受軌道面の超仕上加工方法および超仕上研削構造体
DE102014211938A1 (de) * 2014-06-23 2015-12-24 Nagel Maschinen- Und Werkzeugfabrik Gmbh Finish-Werkzeug

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010041523A1 (en) * 2000-05-04 2001-11-15 Societe Des Procedes Et Machines Speciales Machine for grinding cylindrical bearing surfaces on parts using an abrasive belt
JP2003089047A (ja) * 2001-09-18 2003-03-25 Nissan Motor Co Ltd 曲面仕上げ加工方法および曲面仕上げ加工装置
CN2880385Y (zh) * 2006-02-21 2007-03-21 江宪宗 一种砂带
WO2016193534A1 (fr) * 2015-06-05 2016-12-08 Kwh Mirka Ltd Produit abrasif et un procédé de fabrication de celui-ci

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EP3181293A1 (fr) 2017-06-21
DE102015122189A1 (de) 2017-06-22

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