EP1518643B1 - Dispositif de finition - Google Patents

Dispositif de finition Download PDF

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Publication number
EP1518643B1
EP1518643B1 EP03400054A EP03400054A EP1518643B1 EP 1518643 B1 EP1518643 B1 EP 1518643B1 EP 03400054 A EP03400054 A EP 03400054A EP 03400054 A EP03400054 A EP 03400054A EP 1518643 B1 EP1518643 B1 EP 1518643B1
Authority
EP
European Patent Office
Prior art keywords
finishing
finishing belt
work piece
belt
contact
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.)
Expired - Lifetime
Application number
EP03400054A
Other languages
German (de)
English (en)
Other versions
EP1518643A1 (fr
Inventor
Hildebrandt Oliver
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 AT03400054T priority Critical patent/ATE447461T1/de
Priority to DE50312089T priority patent/DE50312089D1/de
Priority to EP03400054A priority patent/EP1518643B1/fr
Publication of EP1518643A1 publication Critical patent/EP1518643A1/fr
Application granted granted Critical
Publication of EP1518643B1 publication Critical patent/EP1518643B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B24B5/36—Single-purpose machines or devices
    • B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
    • B24B19/12—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding cams or camshafts
    • 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

Definitions

  • the description relates to a finishing device for a superfinishing machine, with a finishing belt, which can be driven in the longitudinal direction and can be applied with a contact area to a workpiece to be machined.
  • a finishing device for a superfinishing machine, with a finishing belt, which can be driven in the longitudinal direction and can be applied with a contact area to a workpiece to be machined.
  • Such a device is eg from the DE-U-298 19 443 known.
  • Finishing machines are known from the prior art, with which the finishing tape can be applied flat to a workpiece.
  • the movement of the workpiece resting against the finishing belt can be superimposed by oscillating movements of the finishing belt and / or of the workpiece in order to be able to achieve the highest surface qualities.
  • the workpieces to be machined are, for example, components such as gear shafts, camshafts, crankshafts or the like.
  • bearings or bearings sealed bearings or the like are processed.
  • the shafts may have balance weights, so-called cheeks, which may be arranged adjacent to a bearing point.
  • cheeks which may be arranged adjacent to a bearing point.
  • the bearing surfaces on their lateral boundaries which may for example adjoin a cheek, a transition section, which may be formed, for example, as a radius.
  • the mentioned components such as camshafts or crankshafts
  • compact that is build as short as possible.
  • the transition between a bearing surface and a cheek can not be formed without undesirable geometry changes.
  • the transition region may be notched, creating undesirable notches that are problematic for strength or fatigue life, particularly a compact crankshaft.
  • the transition region can be increased relative to an adjacent bearing surface, so that the bearing surface is reduced in width. Again, this is not desirable because the largest possible storage space is needed to transfer forces.
  • a finishing device for a superfinishing machine equipped with a finishing belt, which can be applied in the longitudinal direction and with a contact area to a workpiece to be machined, the finishing belt has a curvature in its contact area about an axis extending in the longitudinal direction of the finishing tape and the finishing belt is arranged between the axis and the workpiece, a finishing tape guide is provided, which changes the curvature of the finishing tape about the longitudinal axis, the finishing tape guide has a finish belt entry, with a workpiece approaching portion of the finishing tape from a non-curved to a curved state can be converted, the workpiece is driven in rotation, the contact area has a first, parallel to the axis of rotation of the workpiece extending portion and a curved, second portion, whose perpendicular oblique to the axis of rotation run se, the first portion can be applied to a bearing surface to be machined on the workpiece.
  • the finishing belt is also curved so that the cutting side is located on the inside of the bend.
  • the GB-A-2 269 553 shows a device for grinding crankshafts, in which the grinding belt is guided over a plurality of rollers to bring it into the desired shape.
  • the present invention seeks to provide a finishing device, with the transitions can be produced easily without rugged geometry change.
  • the finishing belt is curved or has a longitudinal axis a curvature on. Because the finishing belt is disposed between the axle and the workpiece, the finishing belt can conform to the geometry of the workpiece and, in particular, machine transition areas to be formed on the workpiece, which transition area can smoothly pass into adjacent areas of the workpiece without creating nicks. The fact that the finishing belt is curved the same way in the finishing belt inlet and on the workpiece, it can optimally cling to the workpiece.
  • workpiece is driven in rotation. This can be high along the entire circumference of a workpiece Surface qualities, especially in the transition areas are produced.
  • the abutment region of the finishing strip has a first, parallel to the axis of rotation of the workpiece extending, and a curved, second portion, whose perpendicular oblique to the axis of rotation.
  • the machining of a bearing surface, for example a crankshaft, and a transition region adjoining the bearing surface can take place simultaneously.
  • the contact area of the finishing strip is adapted to the contour of the workpiece.
  • the curvature of the finishing strip changes around the longitudinal axis.
  • a complementary system of the finishing strip is supported with its investment area to different partial surfaces of the workpiece.
  • finishing belt enema provided, with which a workpiece to be brought to the workpiece section of the finishing strip from an unbending to a curved state can be transferred.
  • the finishing tape is stored on a supply roll on which it is in an uncurved condition is wound up. With the help of the finish belt inlet, the finishing belt can then be converted into a curved state.
  • the finishing belt is preferably curved complementary to the contour of the workpiece.
  • high surface qualities can be achieved in transition areas and adjacent areas of the workpiece.
  • the finishing tape can also be curved several times around the longitudinal axis. This is the case, for example, when a bearing surface to be machined adjoins, with its opposite sides, two transition regions, which in turn can be arranged adjacent to a cheek surface.
  • the finishing tape can then be curved in both the first and in the second transition region, so that the most gentle transitions between the radii and the bearing surface can be formed.
  • the radii of curvature of the portions of the finishing tape can also differ from each other.
  • the finishing belt guide may have a finishing belt outlet, with which a portion of the finishing belt to be removed from the workpiece can be converted from a curved to an un-curved state.
  • the finishing belt which has a curvature in its contact area, can again be converted into an un-curved state and fed to a take-up reel.
  • the finishing band guide has hollow cylindrical guide surfaces which surround the finishing band at least in sections.
  • the course of the finishing strip can be influenced and, on the other hand, the curvature of the finishing strip can be changed. Due to the hollow cylindrical design, the finishing belt is guided particularly reliable.
  • a contact element is provided which presses the contact area of the finishing strip against the workpiece.
  • the contact element is designed to be complementary to the contour of the workpiece.
  • the finishing belt can be aligned particularly well relative to the partial surfaces formed on the workpiece, at the same time a good material removal can be achieved.
  • a development of the invention provides that the abutment region of the finishing strip wraps around the workpiece in sections.
  • the wrap can, for example, 2 ° to 40 °, in particular 30 °, amount.
  • the wrap can also caused by elastic deformation of the contact element and the band.
  • the contact element does not necessarily have to be preformed. It should be noted that a small wrap angle facilitates the curvature of the finish strip about the axis extending in the longitudinal direction of the finish strip. The smaller the angle of contact, the better the absence of tension of the lateral edge regions of the finishing tape is guaranteed. It is also conceivable that one wrapping angle is finished.
  • drive means can be provided with which the finishing belt can be driven to oscillate transversely to its longitudinal direction.
  • the workpiece can be driven to oscillate transversely to the longitudinal direction of the finishing belt.
  • FIG. 1 shows a generally designated 10 processing tongs of a microfinishing machine, not shown, wherein the processing tongs 10 has two processing arms 12 and 14 which are pivotally mounted about pivot bearings 16 and 18 so that their free ends 20 and 22 in the direction of a workpiece 24 and away from this are pivotable.
  • the machining arms 12 and 14 are hydraulically, pneumatically or mechanically driven as known in the art.
  • FIG. 1 is denoted by the reference numeral 26, a finishing belt, which is subtracted from a supply roll, not shown in the direction of arrow 28, deflected by a guide roller 30 and a finishing device 32 is fed. From this, the finishing belt 26 reaches an additional guide 34 and finally to a take-up reel, not shown.
  • the machining of shaft seats should be done with two finishing devices 32.
  • a holding bracket 36 is attached to which a bezel 38 is integrally formed.
  • This bezel 38 serves to receive an insert 40, in which two abutment pieces 42 are arranged, which bear against the workpiece 24.
  • the bezel 38 is needed due to the centrifugal forces only in the processing of crank bearings of a crankshaft.
  • FIG. 2 the finishing device 32 is shown enlarged.
  • a holding bracket 44 by means of two screws 46 and 48 is attached.
  • finish belt inlet is secured by means of a fastening screw 52.
  • the finish belt inlet 50 has an outwardly rounded starting element 54 for the finishing belt 26 fed by the deflection roller 30.
  • the start-up element 54 aligns the finishing belt relative to a hollow-cylindrical guide surface 56 formed in the finish belt inlet 50. By the guide surface 56, the finishing belt 26 is transferred from an unbent to a curved state.
  • the finishing belt 26 rests against the workpiece 24 with a contact region 62 and wraps it around within a small angle of wrap 64.
  • the holding bracket 44 and the bearing element 60 are made in one piece.
  • finishing belt 26 is fed to a hollow cylindrical guide surface 66, which is provided in a finishing belt outlet 68. Following this, the finishing belt 26 passes a deflecting element 70 before it is fed to the additional guide 34 and the take-up reel, not shown.
  • FIG. 3 a portion of the finish belt inlet 50 is shown.
  • the already mentioned hollow cylindrical guide surface 56 is formed.
  • deflection roller 30 is still uncurved finishing belt is transferred by the guide surface 56 in a curved state and then passes with its abutment portion 62 in contact with the workpiece 24th
  • the finishing belt 26 is repeatedly curved about an axis 72 extending in the longitudinal direction of the finishing belt 26, which runs perpendicular to a rotation axis 74 of the workpiece 24.
  • the finishing belt 26 has a first portion 76 with which it is in contact with a bearing surface formed on the workpiece 24. Adjacent to the first partial region 76, the finishing belt 26 has curved, second partial regions 80, the curvature of the finishing belt in these partial regions corresponding to radii 82 to be machined on the workpiece 24. Adjacent to the radii 82 cheeks 84 are formed on the workpiece 24.
  • the radii 82 can be transferred seamlessly into the bearing surface 78 or into the area of go over the cheeks 84 trained areas.
  • the bearing surface 78 can be formed as wide as possible and on the other hand can be avoided that the radii 82 form notches for the workpiece 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Claims (9)

  1. Dispositif de finition (32) pour une machine de superfinition, comprenant une bande de finition (26) qui peut être entraînée dans le sens longitudinal et une zone de contact (62) qui peut être amenée en appui contre une pièce à usiner (24), dans lequel la bande de finition (26) présente dans sa zone de contact (62) une courbure autour d'un axe (72) qui s'étend dans le sens longitudinal de la bande de finition (26) et la bande de finition (26) est disposée entre l'axe (72) et la pièce (24) ; il est prévu un guide de bande de finition qui modifie la courbure de la bande de finition (26) autour de l'axe (72) s'étendant dans le sens longitudinal ; le guide de bande de finition présente une entrée de bande de finition (50) qui permet de faire passer un segment de la bande de finition (26) à amener contre la pièce (24) d'un état non incurvé à un état incurvé de façon que la zone de contact (62) de la bande de finition (26) soit dirigée radialement vers l'extérieur ; la pièce (24) peut être entraînée en rotation ; la zone de contact (62) présente une première zone partielle (76) qui s'étend parallèlement à l'axe de rotation (74) de la pièce (24) et une deuxième zone partielle incurvée (80) dont les perpendiculaires s'étendent diagonalement par rapport à l'axe de rotation (74) ; la première zone partielle (76) peut être amenée contre une surface d'appui à usiner (78) sur la pièce (24), la courbure de la deuxième zone partielle (80) étant égale à un rayon (82) à former sur la pièce (24) ; la deuxième zone partielle (80) peut être amenée contre un rayon à usiner (82) au voisinage de la surface d'appui (78) sur la pièce (24) ; la deuxième zone partielle incurvée (80) est incurvée dans la même direction dans l'entrée de bande de finition (50) et sur la pièce (24) ; et le guide de bande de finition présente des surfaces de guidage cylindriques creuses (56, 66) qui entourent au moins en partie la bande de finition (26).
  2. Dispositif de finition selon la revendication 1, caractérisé en ce que la bande de finition (26) est incurvée de manière complémentaire au contour de la pièce (24).
  3. Dispositif de finition selon l'une des revendications précédentes, caractérisé en ce que la bande de finition (26) est incurvée plusieurs fois autour de l'axe (72) s'étendant dans le sens longitudinal.
  4. Dispositif de finition selon l'une des revendications précédentes, caractérisé en ce que le guide de bande de finition présente une sortie de bande de finition (68) qui permet de faire passer un segment de la bande de finition (26) qui s'éloigne de la pièce (24) d'un état incurvé à un état non incurvé.
  5. Dispositif de finition selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu un élément de contact (58) qui plaque la zone de contact (62) de la bande de finition (26) contre la pièce (24).
  6. Dispositif de finition selon la revendication 5, caractérisé en ce que l'élément de contact (58) est réalisé avec une forme complémentaire au contour de la pièce (24).
  7. Dispositif de finition selon l'une des revendications précédentes, caractérisé en ce que la zone de contact (62) de la bande de finition (26) entoure en partie la pièce (24), en particulier avec un angle d'enroulement (64) allant de 2° à 40°, en particulier égal à 30°.
  8. Dispositif de finition selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu des moyens d'entraînement qui permettent d'entraîner la bande de finition (26) de manière oscillante perpendiculairement à son sens longitudinal.
  9. Dispositif de finition selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu des moyens d'entraînement qui permettent d'entraîner la pièce (24) de manière oscillante perpendiculairement au sens longitudinal de la bande de finition (26).
EP03400054A 2003-09-16 2003-09-16 Dispositif de finition Expired - Lifetime EP1518643B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT03400054T ATE447461T1 (de) 2003-09-16 2003-09-16 Finishvorrichtung
DE50312089T DE50312089D1 (de) 2003-09-16 2003-09-16 Finishvorrichtung
EP03400054A EP1518643B1 (fr) 2003-09-16 2003-09-16 Dispositif de finition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03400054A EP1518643B1 (fr) 2003-09-16 2003-09-16 Dispositif de finition

Publications (2)

Publication Number Publication Date
EP1518643A1 EP1518643A1 (fr) 2005-03-30
EP1518643B1 true EP1518643B1 (fr) 2009-11-04

Family

ID=34178676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03400054A Expired - Lifetime EP1518643B1 (fr) 2003-09-16 2003-09-16 Dispositif de finition

Country Status (3)

Country Link
EP (1) EP1518643B1 (fr)
AT (1) ATE447461T1 (fr)
DE (1) DE50312089D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103447919A (zh) * 2013-09-02 2013-12-18 奇瑞汽车股份有限公司 一种自动去除凸轮轴黑斑的装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2399706B9 (fr) * 2010-06-22 2013-10-02 Supfina Grieshaber GmbH & Co. KG Dispositif de finissage pour le finissage de surfaces de pièces usinées
DE102011081918A1 (de) 2011-08-31 2013-02-28 Nagel Maschinen- Und Werkzeugfabrik Gmbh Finishmaschine zur Finishbearbeitung gekrümmter Werkstückoberflächen an Werkstücken
EP2617523B1 (fr) * 2012-01-23 2014-04-23 Supfina Grieshaber GmbH & Co. KG Dispositif de finissage pour le finissage de surfaces d'une pièce usinée
BR112020011800A2 (pt) * 2017-12-14 2020-11-17 Thielenhaus Technologies Gmbh sapata de pressão
DE102022114485A1 (de) 2022-06-09 2023-12-14 Supfina Grieshaber Gmbh & Co. Kg Finishvorrichtung zur Finishbearbeitung von Werkstücken

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2081699C (fr) * 1992-08-14 1998-06-09 James D. Phillips Meule de maneton
DE4401548B4 (de) * 1994-01-13 2005-05-25 Dr. Koch Investment und Beteiligung Holding S.A. Schleifvorrichtung für die Bearbeitung von Werkstückoberflächen von rotationssymmetrischen und symmetrischen Werkstücken mittels Schleifbändern
DE29819443U1 (de) * 1998-10-31 1998-12-24 Nagel Maschinen- und Werkzeugfabrik GmbH, 72622 Nürtingen Vorrichtung zur Feinbearbeitung von im wesentlichen zylindrischen Werkstückoberflächen
FR2808463B1 (fr) * 2000-05-04 2002-09-13 Procedes Et Machines Speciales Machine d'usinage par bande abrasive de portees cylindriques sur des pieces

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103447919A (zh) * 2013-09-02 2013-12-18 奇瑞汽车股份有限公司 一种自动去除凸轮轴黑斑的装置
CN103447919B (zh) * 2013-09-02 2015-09-23 奇瑞汽车股份有限公司 一种自动去除凸轮轴黑斑的装置

Also Published As

Publication number Publication date
ATE447461T1 (de) 2009-11-15
DE50312089D1 (de) 2009-12-17
EP1518643A1 (fr) 2005-03-30

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