EP2399706A1 - Dispositif de finissage pour le finissage de surfaces de pièces usinées - Google Patents

Dispositif de finissage pour le finissage de surfaces de pièces usinées Download PDF

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Publication number
EP2399706A1
EP2399706A1 EP10166872A EP10166872A EP2399706A1 EP 2399706 A1 EP2399706 A1 EP 2399706A1 EP 10166872 A EP10166872 A EP 10166872A EP 10166872 A EP10166872 A EP 10166872A EP 2399706 A1 EP2399706 A1 EP 2399706A1
Authority
EP
European Patent Office
Prior art keywords
guide
finishing
workpiece
finishing device
guide body
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.)
Granted
Application number
EP10166872A
Other languages
German (de)
English (en)
Other versions
EP2399706B1 (fr
EP2399706B9 (fr
Inventor
Simon Wolber
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 EP10166872.1A priority Critical patent/EP2399706B9/fr
Priority to US13/155,892 priority patent/US8602849B2/en
Publication of EP2399706A1 publication Critical patent/EP2399706A1/fr
Publication of EP2399706B1 publication Critical patent/EP2399706B1/fr
Application granted granted Critical
Publication of EP2399706B9 publication Critical patent/EP2399706B9/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
    • 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

Definitions

  • the invention relates to a finishing device for finish machining of workpiece surfaces, comprising a guide device for guiding a finishing strip, which has a receiving area for a workpiece limiting, cup-shaped guide surface with at least two separate faces, wherein the finishing tape along the guide surface between a finishing tape insertion and a finishing band performer is feasible or guided.
  • a device for fine machining of the crankpin crankshaft is known, with a half-shell for guiding a Honbandes, which is guided on a guide body.
  • the guide body has a rear support portion, the one-piece and resiliently connected to two circumferentially separated, segment-shaped sections.
  • the from the DE 38 13 484 A1 known device has the disadvantage that, due to the elastic connection of the segment-shaped portions with the support portion, the segment-shaped portions extend only over a relatively small circumferential angle.
  • the actually available for a pressing system of the honing tape on the workpiece to be machined guide surface is relatively small, so that a comparatively low material removal performance is achieved.
  • the present invention has the object to improve a finishing device of the type mentioned so that the material removal rate is increased.
  • the guide means comprises at least two mutually separate and mutually non-integral guide body, which each provide a partial surface of the guide surface and are movable relative to each other.
  • the guide device allows independent movement of the guide body.
  • the respective partial surfaces of the guide surface can be formed over a particularly large area.
  • the partial surfaces formed over a large area can act on the finishing belt with uniformly distributed pressure forces, so that the finishing belt, along its course around the workpiece surface to be machined, becomes more uniformly against the workpiece surface Workpiece surface is pressed.
  • an increase in the effective area ratio of the finishing strip is achieved at the same time increased contact pressure, so that the material removal rate can be increased.
  • the guide body between a rest position and a working position are movable, wherein the guide surface extends in the rest position of the guide body between the finishing tape insertion end and the finishing tape performer over a first circumferential angle, which an introduction a workpiece to be machined in the receiving area and an execution of a machined workpiece from the receiving area allowed, and wherein the guide surface extends in the working position of the guide body for machining a workpiece over a larger relative to the first circumferential angle second circumferential angle.
  • the first, smaller circumferential angle ensures that the workpiece is easier to insert into and out of the receiving area.
  • the second, larger circumferential angle makes it possible to increase the effective finishing belt area, which achieves a particularly high material removal rate.
  • a particularly good handling of the finishing device results when the first circumferential angle is less than or equal to 180 °, so that a workpiece to be machined can be inserted undercut-free into and out of the receiving region.
  • the second circumferential angle is greater than 180 °.
  • the second circumferential angle is more than about 200 °. This allows a particularly large guide surface with a high Umschlingungswinkel (equal to second circumferential angle) are provided, which is associated with a particularly high material removal rate. If, at the same time, the first circumferential angle is less than or equal to 180 °, workpieces can be inserted undercut-free into the receiving area, despite the high angle of wrap during machining.
  • exactly two mutually separate guide body are provided. These have mutually adjacent, but not interconnected partial surfaces, which extend, for example, in each case over a circumferential angle of greater than 90 °.
  • a particularly simple construction of the guide device results when at least one of the guide body is movably mounted on a guide body holder, in particular, when all the guide body of the guide device are movably mounted on the guide body holder.
  • the pivot axes are preferably oriented at least substantially parallel to a workpiece axis of a recorded in the receiving area workpiece.
  • a particularly uniform distribution of a pressing force results when a pivot axis of the at least one guide body is arranged such that a plane in which the pivot bearing axis and a workpiece axis parallel thereto in the receiving area when the workpiece is arranged extend at least the partial surface of the at least one guide body about halfway through.
  • a Kraftbeetzschlagungs is provided by means of which the guide body in its rest position are preserved. This has the advantage that - without the action of a workpiece - the guide body are held in their rest position, which is associated with the first, so smaller circumferential angle. As a result, the introduction of a workpiece to be machined in the receiving area is greatly simplified.
  • the guide body can be transferred from the rest position into the working position, accompanied by the assembly of the receiving area with a workpiece, by means of the workpiece surface to be machined.
  • This has the advantage that a conceivable in principle conceivable, but more complex drive for transferring the guide body from the rest position to the working position is unnecessary.
  • the workpiece surface to be machined can be used to press this against the finishing belt, so that this in turn presses against the partial surfaces of the guide body, so that they are spent alone by a force applied by the workpiece actuating force from the rest position to the working position, if necessary contrary the effect of a Kraftbeetzschungs liked described above.
  • a further advantageous embodiment of the invention provides that at least a part of the guide surface in the radial direction is resiliently deformable, so that a particularly gentle machining of a workpiece surface is made possible.
  • the elastic compliance can, for example, be realized in that the partial surfaces of the guide surface are formed of an elastically deformable material, in particular of an elastomer.
  • At least one of the guide body is mounted elastically yielding in the radial direction. This makes it possible to at least slightly adjust the spatial position of a bearing axis of a guide body, so that a particularly gentle and highly accurate machining of a workpiece surface is made possible.
  • the invention further relates to the use of a finishing device described above for finish machining a rotationally symmetrical workpiece surface, which is in particular cylindrical or spherical.
  • the invention relates to the use of a finishing device described above for finishing machining a circumferentially only segmentally rotationally symmetrical workpiece surface.
  • FIG. 1 An embodiment of a finishing device is in FIG. 1 generally designated by the reference numeral 10.
  • the finishing device 10 comprises a pressing device 12 with at least one first arm 14 and optionally with one second arm 16.
  • the arms 14 and 16 are pivotally mounted so that they can be delivered towards a workpiece 18 having a central workpiece axis 20 (as in FIG FIG. 1 shown).
  • the workpiece 18 is, for example, a crankshaft whose central bearing or stroke bearing is to be machined finishend.
  • the workpiece surfaces to be machined can be designed as a full seat with a workpiece surface that is completely cylindrical in the circumferential direction or as a partial seat with a workpiece surface that is cylindrical in the circumferential direction only.
  • the finishing device 10 further comprises a finishing belt 22, which in FIG. 1 dash-dotted lines is shown.
  • the finishing belt 22 is provided by a finishing belt supply 24, fed to the workpiece 18 in an approximately radial direction, and brought into contact with a workpiece surface 28 of the workpiece 18 to be machined in the region of a finishing belt insertion end 26.
  • the finishing belt 22 is guided, starting from the finish belt insertion end 26, between a guide device 30 shown in dashed lines and the workpiece surface 28 as far as a finishing belt performer 32. In the area of the finishing belt runner 32, the finishing belt 22 is led away from the workpiece surface 28 approximately radially outwards from the workpiece 18.
  • the finishing belt 22 is guided by means of deflection rollers 34 and 36 and tensioned by means of a tensioning device 38.
  • the tensioning device 38 has a clamping element 40 which acts on the finishing belt 22 and simultaneously serves as a deflecting element.
  • the Clamping device 38 is fixedly connected to the first arm 14.
  • the guide device 30 is fixed to the first arm 14, in particular by means of a screw 42nd
  • finishing machining of the workpiece it is rotationally driven about the workpiece axis 20 by means of a drive device (not shown).
  • the finishing belt 22 can be fixed, or it is moved to increase the cutting speed during machining of the workpiece surface 28 in a feed direction 44.
  • the arm 14 By means of the arm 14, a directed in the direction of the workpiece 18 pressing force is generated with which the guide means 30 presses on the finishing belt 22 and the finishing belt 22 on the workpiece surface 28.
  • the guide means 30 comprises a guide body holder 46, which is connectable to the first arm 14, for example using the in FIG. 1 shown screws 42 and / or using in FIG. 2 illustrated screws 48.
  • the guide body holder 46 is substantially C-shaped, for example, and includes a rear plate 50 from which two beams 52 and 54 protrude.
  • the carrier 52 and 54 serve to receive further, described below components.
  • pulleys 56 and 58, respectively, are fastened using one holder 60 each.
  • the guide body holder 46 serves to specify pivot axes 62 and 64.
  • the pivot axes 62 and 64 are in particular parallel to each other. They define the bearing axles for a respective guide body 66 or 68 pivotable about the pivot axes 62, 64.
  • the guide bodies 66 and 68 each have a partial surface 70 or 72 of a guide surface 74, which extends between the finishing tape insertion end 26 and the finishing tape processor 32 extends.
  • the partial surfaces 70 and 72 adjoin one another and are movable independently of one another.
  • the bearing bolts can be connected, for example, in a rotationally fixed manner to the carrier 52 of the guide body holder 46.
  • a particularly low-friction bearing of the guide body results when used for the storage of the guide body 66 or 68 bearings, such as ball bearings 78th
  • the guide device 30 further comprises a force acting on the overall reference numeral 80 Kraftbeetzschungs issued.
  • the force-applying device comprises at least one spring 82, which acts on the guide body 66 or 68 with a bias voltage. This allows the guide body 66 and 68 are held in a rest position.
  • two springs 82 and 84 are provided, which are stationary with respect to the guide body holder 46 and articulated, for example, to a linkage 86.
  • the articulation 86 facing away from the ends of the springs 82 and 84 are each connected to one of the guide body 66 and 68, respectively.
  • the force application device 80 generates a clamping force which causes the partial surfaces 70 and 72 to move toward one another, resulting in a first circumferential angle 88 enclosed by the partial surfaces 70 and 72. This is preferably at most about 180 °, in particular at most 180 °.
  • FIG. 4 a further embodiment of a guide device 30 is shown.
  • the sliding bearings 90 and 92 each comprise a bearing pin 94, 96 which is rotatably connected to the guide body holder 46 and on which in each case a corresponding bearing surface of the guide body 66 and 68 slides, so that the guide body 66 and 68 about the pivot axes 62, 64 pivotally are.
  • the bearing pins 94, 96 may be guided in elastic bushings, which allow a radial mobility of the pivot axes 62, 64.
  • the structure and operation of the guide device 30 is according to FIGS. 2 and 3 identical to the structure and operation of the guide device 30 according to FIG. 4 , The following description therefore applies to both embodiments.
  • the guide surface 74 formed by the partial surfaces 70 and 72 defines a receiving region 98 (see FIG FIG. 2 ), in which the workpiece 18 (see FIG. 4 ) can be arranged.
  • the arrangement of the pivot axes 62 and 64 is selected so that an (imaginary) plane 100 or 102 in which each extend one of the pivot axes 62 and 64 and this at least approximately parallel workpiece axis 20, the sub-surfaces 70 and 72 cut through at least approximately half ,
  • FIG. 4 the lower guide body 68 is shown in its rest position.
  • the guide body 68 is inclined with its partial surface 72 in such a way that the receiving region 98 is enlarged and the introduction of a workpiece 18 into the receiving region 98 is facilitated.
  • the workpiece surface 28 comes into contact with the in the sake of clarity in the Figures 2 and 4 not shown finishing belt 22, whereby this in turn comes into contact with the partial surfaces 70 and 72 of the guide body 66 and 68, respectively.
  • the guide body 66 and 68 are pivoted from its rest position to its working position.
  • This job position will be in FIG. 4 illustrated by the upper guide body 66.
  • the partial surfaces 70 and 72 wrap around the workpiece 18 with a second circumferential angle 104 which is larger than the first circumferential angle 88 (cf. FIG. 3 ).
  • the second circumferential angle 104 is in particular greater than 180 °.
  • the workpiece surface 28 of the workpiece 18 is processed.
  • the workpiece surface 28 may be completely rotationally symmetrical or only rotationally symmetric in segments and in an in FIG. 4 Dashed line indicated section 106 deviate from a rotationally symmetrical shape.
  • not completely rotationally symmetrical workpiece 18 allows the pivotal mounting of the guide body 66 and 68, that the guide body 66, 68 perform about the pivot axes 62, 64 oscillating movement, wherein the guide body 66, 68 alternately by the action of a rotationally symmetrical sections Workpiece surface portion and by the action of the force application device 80 are pivoted back and forth.

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)
EP10166872.1A 2010-06-22 2010-06-22 Dispositif de finissage pour le finissage de surfaces de pièces usinées Not-in-force EP2399706B9 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10166872.1A EP2399706B9 (fr) 2010-06-22 2010-06-22 Dispositif de finissage pour le finissage de surfaces de pièces usinées
US13/155,892 US8602849B2 (en) 2010-06-22 2011-06-08 Finishing device for finishing a surface of a workpiece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10166872.1A EP2399706B9 (fr) 2010-06-22 2010-06-22 Dispositif de finissage pour le finissage de surfaces de pièces usinées

Publications (3)

Publication Number Publication Date
EP2399706A1 true EP2399706A1 (fr) 2011-12-28
EP2399706B1 EP2399706B1 (fr) 2012-12-19
EP2399706B9 EP2399706B9 (fr) 2013-10-02

Family

ID=42933809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10166872.1A Not-in-force EP2399706B9 (fr) 2010-06-22 2010-06-22 Dispositif de finissage pour le finissage de surfaces de pièces usinées

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US (1) US8602849B2 (fr)
EP (1) EP2399706B9 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105619212B (zh) * 2016-01-07 2017-09-29 温州大学激光与光电智能制造研究院 一种不锈钢水杯自动抛光系统
CN106078470B (zh) * 2016-08-04 2018-07-10 乐清市通达有线电厂 轴承抛光检测一体装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3813484A1 (de) 1988-04-21 1989-11-02 Ford Werke Ag Vorrichtung zur feinbearbeitung der hubzapfen von kurbelwellen
US5522762A (en) * 1993-03-18 1996-06-04 Societe Procedes Machines Speciales S.P.M.S. Tool for applying surface coated abrasives for use on a machine for abrasion machining of cylindrical surfaces on workpieces
DE19602974A1 (de) * 1996-01-27 1997-07-31 Thielenhaus Ernst Kg Maschine für die Feinschleifbearbeitung einer zylindrischen Lagerfläche an einer Welle mit Hilfe eines Schleifbandes
EP1518643A1 (fr) * 2003-09-16 2005-03-30 Supfina Grieshaber GmbH & Co. KG Dispositif de finition

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426923A1 (de) * 1994-07-29 1996-02-01 Grieshaber Masch Vorrichtung zur Oberflächenbearbeitung von Werkstücken
US5695391A (en) * 1995-12-28 1997-12-09 Supfina Grieshaber Gmbh & Co. Super finishing machine
DE29719168U1 (de) * 1997-10-29 1999-03-04 Supfina Grieshaber GmbH & Co., 42859 Remscheid Vorrichtung zur Bearbeitung zylindrischer Werkstücke

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3813484A1 (de) 1988-04-21 1989-11-02 Ford Werke Ag Vorrichtung zur feinbearbeitung der hubzapfen von kurbelwellen
US5522762A (en) * 1993-03-18 1996-06-04 Societe Procedes Machines Speciales S.P.M.S. Tool for applying surface coated abrasives for use on a machine for abrasion machining of cylindrical surfaces on workpieces
DE19602974A1 (de) * 1996-01-27 1997-07-31 Thielenhaus Ernst Kg Maschine für die Feinschleifbearbeitung einer zylindrischen Lagerfläche an einer Welle mit Hilfe eines Schleifbandes
EP1518643A1 (fr) * 2003-09-16 2005-03-30 Supfina Grieshaber GmbH & Co. KG Dispositif de finition

Also Published As

Publication number Publication date
US8602849B2 (en) 2013-12-10
EP2399706B1 (fr) 2012-12-19
US20110312256A1 (en) 2011-12-22
EP2399706B9 (fr) 2013-10-02

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