EP2327510A1 - Finishing device - Google Patents

Finishing device Download PDF

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Publication number
EP2327510A1
EP2327510A1 EP09014666A EP09014666A EP2327510A1 EP 2327510 A1 EP2327510 A1 EP 2327510A1 EP 09014666 A EP09014666 A EP 09014666A EP 09014666 A EP09014666 A EP 09014666A EP 2327510 A1 EP2327510 A1 EP 2327510A1
Authority
EP
European Patent Office
Prior art keywords
slot
finishing
guide surface
guide
finishing device
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
EP09014666A
Other languages
German (de)
French (fr)
Other versions
EP2327510B1 (en
Inventor
Peter Grabsch
Michael Huber
Simon Wolber
Johannes Herrmann
Oliver Hildebrand
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 AT09014666T priority Critical patent/ATE515371T1/en
Priority to EP09014666A priority patent/EP2327510B1/en
Priority to CN201010224653XA priority patent/CN102069441B/en
Priority to US12/869,412 priority patent/US8408973B2/en
Publication of EP2327510A1 publication Critical patent/EP2327510A1/en
Application granted granted Critical
Publication of EP2327510B1 publication Critical patent/EP2327510B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • 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

Definitions

  • the invention relates to a finishing device for finish machining of rotationally symmetrical workpiece surfaces, comprising a finishing tape guide having a guide body for guiding a finishing tape, wherein the guide body comprises a cup-shaped guide surface, along which the finishing belt between a finishing tape insertion and a finishing belt executable feasible or guided is, wherein the guide surface is mounted resiliently in the radial direction.
  • a device for fine machining of the crankpin crankshaft is known, with a half-shell for guiding a Honbandes, which is guided at circumferentially separated segments of a guide surface.
  • a processing shell in the form of a Dehnspannschuhs known which has a filled with a pressure medium cavity.
  • the devices mentioned allow an at least partial compensation of nominal dimension deviations of a workpiece to be machined. In comparison to likewise known, rigid guide bodies, better concentricity values are also produced.
  • the present invention has the object to improve a finishing device of the type mentioned so that it allows a particularly good adaptation to the shape of a workpiece and produces very good concentricity values.
  • This object is achieved in a finishing device of the type mentioned in the present invention that at least over a portion of the width of the guide surface this extends in the circumferential direction without interruption between the finishing tape insertion end and the finishing tape performer extends and is resiliently mounted.
  • the guide surface extends in the circumferential direction without interruption between the finishing tape insertion end and the finishing tape performer.
  • the finishing tape is guided over at least part of the width of the guide surface of the guide surface, so that these, unlike the DE 38 13 484 A1 , is not divided into individual segments.
  • the guide surface is seen in the circumferential direction along its entire course between the finishing tape insertion end and the finishing tape performer in the radial direction stored elastic.
  • a deformation or displacement in the radial direction of an end-side guide surface section is accompanied by an oppositely directed deformation or displacement of a central guide surface section.
  • a particularly good adaptability of the guide surface is obtained when the guide body is made of a resilient material.
  • At least one extending in the circumferential direction slot is provided for the resilient mounting of the guide surface in the guide body. This extends in an advantageous manner over the entire width of the guide body.
  • a first slot is provided which, viewed radially outward from the guide surface, is arranged adjacent to the guide surface is and is closed in the circumferential direction at both slot ends.
  • the first slot does not extend all the way to the finish tape inserter and finishing belt executor, but is spaced from these ends.
  • a particularly good deformation behavior of the guide surface results when a second slot is provided, which is spaced in the radial direction outwardly further from the guide surface than the first slot, wherein the second slot is open at one of its slot ends open and closed at the opposite end of the slot.
  • the second slot is therefore open in the region of the finishing tape insertion end or the finishing tape executing end, so that an end-side guide surface portion of the guide surface is deformable or displaceable by changing the slot geometry of the second slot.
  • a further optimization of the deformation behavior of the guide surface results when the second slot overlaps in the circumferential direction along a part of its course with the first slot. This ensures that a deformability or displaceability of an end-side guide surface portion is also accompanied by a change in the slot geometry of the first slot, so that adjacent to the end-side guide surface portion, in particular central guide surface sections, can deform or displace opposite.
  • a third slot is provided, which is spaced further in the radial direction outwardly from the guide surface than the first slot, wherein the third slot is open at one of its slot ends and closed at the opposite end of the slot. Also here is advantageous if the third slot overlaps in the circumferential direction along a part of its course with the first slot.
  • end-side guide surface sections facing away from one another can be mounted in a spring-elastic manner in a particularly simple manner in the radial direction. This is especially true when the open-edge slot ends of the second slot and the third slot are arranged facing away from each other.
  • the second slot and the third slot have the same radial distance to the guide surface, so that a uniform deformation behavior of the guide surface in the circumferential direction is achieved.
  • At least one additional spring element is provided, which is arranged in at least one of the slots.
  • the spring stiffness of the spring-elastic storage can be specified very precisely.
  • a spring force is superimposed on the deformation resistance of the guide body, which is determined by the bias and choice of the spring rate of the spring element.
  • the spring element is received in a receiving space which is adjacent to a slot boundary of a slot and whose cross-section is widened compared to a slot cross-section. This allows a simple and reliable storage of a spring element.
  • the opening may be formed in the form of a pocket-shaped recess in the guide body or in the form of a radially outwardly open material recess.
  • the opening makes it possible to vary distributed over the width of the guide surface acting on a finishing belt contact pressure. This makes it possible, in particular, to produce crowned workpiece surfaces, for example for center or stroke bearings of a crankshaft.
  • the opening is centered with respect to the width of the guide surface, so that a symmetrical in the transverse direction geometry can be generated.
  • a lateral emigration of the finishing tape is prevented.
  • FIG. 1 An embodiment of a finishing device is in FIG. 1 generally designated by the reference numeral 10.
  • the finishing device 10 includes a pair of pliers 12 having a first arm 14 and a second arm 16.
  • the arms 14 and 16 are pivotally mounted so that they can be delivered towards a rotationally symmetric workpiece 18 (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 finishing device 10 further comprises a finishing belt 22, which in FIG. 1 dash-dotted lines is shown.
  • the finishing tape 22 is provided by a finishing tape supply 24, fed radially to the workpiece 18 and brought into contact with a cylindrical workpiece surface 28 of the workpiece 18 in the region of a finishing tape insertion end 26.
  • the finishing belt 22 is guided from the finishing belt insertion end 26 between a guide body 30 and the workpiece surface 28 up to a finishing belt performer 32. In the area of the finishing belt-executing 32, the finishing belt is led away from the workpiece surface 28 radially outward from the workpiece 18.
  • the finishing belt 22 is guided by means of deflection rollers 34 and 36 and by means of a Clamping device 38 tensioned.
  • the tensioning device 38 has a clamping element 40 which acts on the finishing belt 22 and simultaneously serves as a deflecting element.
  • the tensioning device 38 is firmly connected to the first arm 14 of the forceps 12.
  • FIG. 1 only schematically illustrated guide body 30 is fixed to a guide body holder 42, in particular by means of two fastening elements 44 and 46, which are screwed to the guide body 30.
  • the guide body holder 42 has a surface 48 facing the guide body 30, which is correspondingly concavely curved in the shape of the guide body 30.
  • the guide body holder 42 is fixed to the first arm 14, in particular by means of a screw 50th
  • finishing machining of the workpiece 18 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 52.
  • a measurement of the diameter and / or the concentricity of the workpiece 18 can be performed if necessary by means of a measuring device 54, which is attached to the second arm 16.
  • the structure of the guide body 30 will be described below with reference to FIGS FIGS. 2 to 5 described.
  • the guide body 30 has a cup-shaped guide surface 56 for guiding the finish belt 22, which extends between the finish belt insertion end 26 and the finishing belt performer 32.
  • the guide surface 56 continuously merges into a finishing belt insertion surface 58.
  • the guide surface 56 continuously merges into a finishing belt leading surface 60.
  • the guide surface 56 has a width 64 parallel to a width direction 62 (cf. FIG. 4 ). Adjacent to a first side surface 66 and to a second side surface 68, the guide surface 56 includes parts 70 and 72 in which the guide surface 56 is continuous between the insertion surface 58 and the delivery surface 60 and has no interruption.
  • the guide surface 56 has a center of curvature 74, cf. FIG. 3 ,
  • the guide surface 56 is resiliently mounted in its entire course between the insertion surface 58 and the lead-out surface 60 in a radial direction 76 with respect to the center of curvature 74.
  • the guide body 30 extends with respect to the center of curvature 74 over an angle 78, which is preferably greater than 90 ° and less than 180 °, in particular between about 110 ° and about 160 °.
  • the guide body 30 is in particular formed in one piece and has various guide body sections.
  • a first guide body portion 80 forms on its outer surface the guide surface 56.
  • the first guide body portion 80 is bounded radially outwardly by a first slot 82 which extends over the entire width 64 of the guide body 30.
  • the first slot 82 extends circumferentially between a first slot end 84 and a second slot end 86.
  • the slot ends 84 and 86 are closed.
  • the first slot end 84 is spaced from the finish tape inserter 26.
  • the second slot end 86 is spaced from the finish belt performer 32.
  • the guide body 30 further includes a second slot 88 and a third slot 90 which extend across the entire width 64 of the guide body 30.
  • the second slot 88 extends from a closed slot end 92 in the direction of the finishing tape insertion end 26 and is open at its end facing away from the slot end 92 slot end 94.
  • the third slot 90 extends between a closed slot end 96 and an open-edge slot end 98 provided in the region of the finish belt performer 32.
  • the second slot 88 and the third slot 90 extend coaxially with the first slot 82.
  • the second slot 88 and the third slot 90 are located radially further outward with respect to the first slot 82 and have the same radial distance from the first slot 82.
  • the first slot 82 and the second slot 88 are circumferentially overlapping each other in a portion 100 which is circumferentially spaced from the finish tape inserter 26 and from a central portion 102 of the guide body 30. In a corresponding manner, the first slot 82 and the third slot 90 overlap in a partial area 104, which is spaced from the finish belt performer 32 and the central portion 102.
  • the second guide body portion disposed between the first slot 82 and the second slot 88 and third slot 90, respectively, is designated 106. Furthermore, the guide body 30 has a third guide body section 108 which extends between the second slot 88 and the third slot 90 on the one hand and an outer surface 110 of the guide body 30 facing away from the guide surface 56 on the other hand.
  • the guide body 30 For attachment of the guide body 30 has this two extending in the radial direction bores 112 (see FIGS. 4 and 5 ), which are preferably provided with an internal thread for screwing with the fastening elements 44 and 46, respectively.
  • the guide surface 56 has a plurality of openings, which extend over part of the width 64 of the guide surface 56.
  • a first opening 114 is arranged in the region of a central guide surface section 116.
  • the opening 114 is formed in particular in the form of a recess of the first guide body portion 80.
  • the aperture 114 tapers toward the finish tape inserter 26 and towards the finish tape applicator 32.
  • the aperture 114 is diamond-shaped in plan view.
  • the guide surface 56 has a first end-side guide surface section 118 and a second end-side guide surface section 120. Also in the region of these guide surface sections 118, 120 is the guide surface 56, namely by means of a second opening 122 and by means of a third opening 130th
  • the openings 122 and 130 each taper in the direction of the first opening 114.
  • the openings 122 and 130 are approximately triangular in plan view.
  • the guide body 30 also has adjacent to the finishing tape insertion end 26 and the finishing belt performer 32 arranged receiving spaces 132. These are cylindrical in profile and border with their part-cylindrical boundary surfaces on the boundary surfaces of the second slot 88 and the third slot 90 at.
  • the receiving spaces 132 serve to receive a spring element 134, which in FIG. 3 is shown schematically.
  • the spring element 134 is a spiral spring, which acts on the first guide body section 80 and the third guide body section 108 in opposite radial directions with a spring force.
  • the guide body 30 allows a particularly good adaptation of the course of the finishing tape 22 to the course of the workpiece surface 28.
  • the end-side guide surface sections 118 and 120 are resiliently mounted by the open-edged design of the slot ends 94 and 98 in the radial direction. A deformation or displacement of the end-side guide surface portions 118 or 120 causes this in the radial direction opposite directed deformation or displacement of the central guide surface portion 116. This is achieved in particular by the alternating change in the circumferential direction overlapping arrangement of Slits 82, 88 and 90 (in portions 100 and 104) and the non-overlapping arrangement of slots 82, 88 and 90 (in the remaining portions).
  • a displacement or deformation of the central guide surface portion 116 results in a radially opposite displacement or deformation of the end-side guide surface portions 118 and 120.
  • the described geometry of the apertures 114, 122 and 130 also makes it possible to finely contour the workpiece surface 28 from a cylindrical shape.
  • the guide body 30 makes it possible to apply the guide surface 56 over the entire area to the workpiece surface 28, wherein the diameter of the workpiece 18 may fluctuate within a comparatively large bandwidth.
  • undesirable line contact between the guide surface 56 and the workpiece surface 28 can be avoided.
  • an improvement of the concentricity of the workpiece 18 is achieved.
  • the guide surface 56 adjusts in its course of the workpiece surface 28, which is reduced during processing by the abrasive action of the finishing belt 22 in diameter.
  • the openings 114, 122 and 130 make it possible to produce a workpiece geometry deviating from a cylindrical shape, since the finishing belt 22 is pressed against the workpiece surface 28 in the region of the openings with a lower contact pressure.
  • the finishing device 10 according to the invention also enables a compensation of thickness variations of
  • Spring elements 134 can be used to further influence the spring-elastic support of the guide surface 56 in the radial direction.
  • a further adaptation can be achieved by the choice of the material of the guide body 30, which is made for example of a spring steel.

Abstract

The finishing device (10) has a slot extending itself in circumferential direction for elastically flexible support of a guidance surface in a guidance body (30). The slot is arranged adjacent to the guidance surface and is closed at both ends of slit in circumferential direction.

Description

Die Erfindung betrifft eine Finishvorrichtung zur finishenden Bearbeitung von rotationssymmetrischen Werkstückoberflächen, mit einer Finishbandführung, die einen Führungskörper zur Führung eines Finishbands aufweist, wobei der Führungskörper eine schalenförmige Führungsfläche umfasst, entlang welcher das Finishband zwischen einem Finishband-Einführende und einem Finishband-Ausführende führbar oder geführt ist, wobei die Führungsfläche in radialer Richtung federelastisch gelagert ist.The invention relates to a finishing device for finish machining of rotationally symmetrical workpiece surfaces, comprising a finishing tape guide having a guide body for guiding a finishing tape, wherein the guide body comprises a cup-shaped guide surface, along which the finishing belt between a finishing tape insertion and a finishing belt executable feasible or guided is, wherein the guide surface is mounted resiliently in the radial direction.

Aus der DE 38 13 484 A1 ist eine Vorrichtung zur Feinbearbeitung der Hubzapfen von Kurbelwellen bekannt, mit einer Halbschale zur Führung eines Honbandes, welches an in Umfangsrichtung voneinander getrennten Segmenten einer Führungsfläche geführt ist. Aus der EP 0 781 627 A1 ist eine Bearbeitungsschale in Form eines Dehnspannschuhs bekannt, welcher einen mit einem Druckmedium angefüllten Hohlraum aufweist.From the DE 38 13 484 A1 a device for fine machining of the crankpin crankshaft is known, with a half-shell for guiding a Honbandes, which is guided at circumferentially separated segments of a guide surface. From the EP 0 781 627 A1 is a processing shell in the form of a Dehnspannschuhs known which has a filled with a pressure medium cavity.

Die genannten Vorrichtungen ermöglichen eine zumindest teilweise Kompensation von Sollmaßabweichungen eines zu bearbeitenden Werkstücks. Im Vergleich zu ebenfalls bekannten, starren Führungskörpern werden auch bessere Rundlaufwerte erzeugt.The devices mentioned allow an at least partial compensation of nominal dimension deviations of a workpiece to be machined. In comparison to likewise known, rigid guide bodies, better concentricity values are also produced.

Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine Finishvorrichtung der eingangs genannten Art so zu verbessern, dass sie eine besonders gute Anpassung an die Form eines Werkstücks erlaubt und besonders gute Rundlaufwerte erzeugt.On this basis, the present invention has the object to improve a finishing device of the type mentioned so that it allows a particularly good adaptation to the shape of a workpiece and produces very good concentricity values.

Diese Aufgabe wird bei einer Finishvorrichtung der eingangs genannten Art erfindungsgemäß dadurch gelöst, dass zumindest über einen Teil der Breite der Führungsfläche diese sich in Umfangsrichtung gesehen ohne Unterbrechung zwischen dem Finishband-Einführende und dem Finishband-Ausführende erstreckt und federelastisch gelagert ist.This object is achieved in a finishing device of the type mentioned in the present invention that at least over a portion of the width of the guide surface this extends in the circumferential direction without interruption between the finishing tape insertion end and the finishing tape performer extends and is resiliently mounted.

Bei der erfindungsgemäßen Finishvorrichtung erstreckt sich die Führungsfläche in Umfangsrichtung gesehen ohne Unterbrechung zwischen dem Finishband-Einführende und dem Finishband-Ausführende. In diesem Bereich ist das Finishband zumindest über einen Teil der Breite der Führungsfläche von der Führungsfläche geführt, so dass diese, anders als bei der DE 38 13 484 A1 , nicht in einzelne Segmente unterteilt ist. Hierdurch wird eine Verbesserung der Rundlaufwerte erzielt. Darüber hinaus ist die Führungsfläche in Umfangsrichtung gesehen entlang ihres gesamten Verlaufs zwischen dem Finishband-Einführende und dem Finishband-Ausführende in radialer Richtung federelastisch gelagert. Dies schließt eine federelastische Lagerung eines endseitigen Führungsflächenabschnitts ein, welcher, anders als bei der EP 0 781 627 A1 , ebenfalls in radialer Richtung federelastisch gelagert ist. Bei der aus der EP 0 781 627 A1 beschriebenen Lagerung ist es zum Abschluss des Hohlraums im Bereich der endseitigen und auch der seitlichen Führungsflächenabschnitte erforderlich, eine stabile Wandung vorzusehen, welche eine in radialer Richtung wirksame federelastische Lagerung verhindert.In the finishing apparatus according to the invention, the guide surface extends in the circumferential direction without interruption between the finishing tape insertion end and the finishing tape performer. In this area, the finishing tape is guided over at least part of the width of the guide surface of the guide surface, so that these, unlike the DE 38 13 484 A1 , is not divided into individual segments. This achieves an improvement in the concentricity values. In addition, the guide surface is seen in the circumferential direction along its entire course between the finishing tape insertion end and the finishing tape performer in the radial direction stored elastic. This includes a resilient mounting of an end guide surface portion, which, unlike the EP 0 781 627 A1 , Is also resiliently mounted in the radial direction. At the time of the EP 0 781 627 A1 described storage, it is necessary for the completion of the cavity in the region of the end and also the lateral guide surface portions to provide a stable wall, which prevents effective in the radial direction resilient mounting.

Bei der erfindungsgemäßen Finishvorrichtung geht eine Verformung oder Verlagerung in radialer Richtung eines endseitigen Führungsflächenabschnitts mit einer entgegengesetzt gerichteten Verformung oder Verlagerung eines mittigen Führungsflächenabschnitts einher. Dies ermöglicht eine besonders gute Anpassbarkeit der Führungsfläche auch an Werkstücke mit zu großen oder zu kleinen Durchmessern. Dabei werden infolge der Verformbarkeit der durchgängigen Führungsfläche sehr gute Rundlaufwerte erzielt.In the finishing device according to the invention, a deformation or displacement in the radial direction of an end-side guide surface section is accompanied by an oppositely directed deformation or displacement of a central guide surface section. This allows a particularly good adaptability of the guide surface to workpieces with too large or too small diameters. As a result of the deformability of the continuous guide surface, very good concentricity values are achieved.

Eine besonders gute Anpassbarkeit der Führungsfläche ergibt sich, wenn der Führungskörper aus einem federelastischen Material hergestellt ist.A particularly good adaptability of the guide surface is obtained when the guide body is made of a resilient material.

Bei einer vorteilhaften Ausführungsform der Erfindung ist vorgesehen, dass zur federelastischen Lagerung der Führungsfläche in dem Führungskörper mindestens ein sich in Umfangsrichtung erstreckender Schlitz vorgesehen ist. Dieser erstreckt sich in vorteilhafter Weise über die gesamte Breite des Führungskörpers.In an advantageous embodiment of the invention it is provided that at least one extending in the circumferential direction slot is provided for the resilient mounting of the guide surface in the guide body. This extends in an advantageous manner over the entire width of the guide body.

Insbesondere ist es vorteilhaft, wenn ein erster Schlitz vorgesehen ist, der von der Führungsfläche nach radial außen gesehen zu der Führungsfläche benachbart angeordnet ist und in Umfangsrichtung gesehen an beiden Schlitzenden geschlossen ist. Der erste Schlitz erstreckt sich also nicht bis hin zu dem Finishband-Einführende und dem Finishband-Ausführende, sondern ist zu diesen Enden beabstandet.In particular, it is advantageous if a first slot is provided which, viewed radially outward from the guide surface, is arranged adjacent to the guide surface is and is closed in the circumferential direction at both slot ends. Thus, the first slot does not extend all the way to the finish tape inserter and finishing belt executor, but is spaced from these ends.

Ein besonders gutes Verformungsverhalten der Führungsfläche ergibt sich, wenn ein zweiter Schlitz vorgesehen ist, der in radialer Richtung nach außen weiter von der Führungsfläche beabstandet ist als der erste Schlitz, wobei der zweite Schlitz an einem seiner Schlitzenden randoffen und an dem entgegengesetzten Schlitzende geschlossen ist. Der zweite Schlitz ist also im Bereich des Finishband-Einführendes oder des Finishband-Ausführendes offen, sodass ein endseitiger Führungsflächenabschnitt der Führungsfläche durch Veränderung der Schlitzgeometrie des zweiten Schlitzes verform- oder verlagerbar ist.A particularly good deformation behavior of the guide surface results when a second slot is provided, which is spaced in the radial direction outwardly further from the guide surface than the first slot, wherein the second slot is open at one of its slot ends open and closed at the opposite end of the slot. The second slot is therefore open in the region of the finishing tape insertion end or the finishing tape executing end, so that an end-side guide surface portion of the guide surface is deformable or displaceable by changing the slot geometry of the second slot.

Eine weitere Optimierung des Verformungsverhaltens der Führungsfläche ergibt sich, wenn der zweite Schlitz in Umfangsrichtung gesehen entlang eines Teils seines Verlaufs mit dem ersten Schlitz überlappt. Hierdurch wird erreicht, dass eine Verformbarkeit oder Verlagerbarkeit eines endseitigen Führungsflächenabschnitts auch mit einer Veränderung der Schlitzgeometrie des ersten Schlitzes einhergeht, so dass sich zu dem endseitigen Führungsflächenabschnitt benachbarte, insbesondere mittige Führungsflächenabschnitte, entgegengesetzt verformen oder verlagern können.A further optimization of the deformation behavior of the guide surface results when the second slot overlaps in the circumferential direction along a part of its course with the first slot. This ensures that a deformability or displaceability of an end-side guide surface portion is also accompanied by a change in the slot geometry of the first slot, so that adjacent to the end-side guide surface portion, in particular central guide surface sections, can deform or displace opposite.

Vorzugsweise ist ein dritter Schlitz vorgesehen, der in radialer Richtung nach außen weiter von der Führungsfläche beabstandet ist als der erste Schlitz, wobei der dritte Schlitz an einem seiner Schlitzenden randoffen und an dem entgegengesetzten Schlitzende geschlossen ist. Auch hierbei ist vorteilhaft, wenn sich der dritte Schlitz in Umfangsrichtung gesehen entlang eines Teils seines Verlaufs mit dem ersten Schlitz überlappt.Preferably, a third slot is provided, which is spaced further in the radial direction outwardly from the guide surface than the first slot, wherein the third slot is open at one of its slot ends and closed at the opposite end of the slot. Also here is advantageous if the third slot overlaps in the circumferential direction along a part of its course with the first slot.

Wenn sowohl ein zweiter als auch ein dritter Schlitz vorgesehen ist, können voneinander abgewandte, endseitige Führungsflächenabschnitte in besonders einfacher Art und Weise in radialer Richtung federelastisch gelagert werden. Dies gilt insbesondere, wenn die randoffenen Schlitzenden des zweiten Schlitzes und des dritten Schlitzes voneinander abgewandt angeordnet sind.If both a second and a third slot is provided, end-side guide surface sections facing away from one another can be mounted in a spring-elastic manner in a particularly simple manner in the radial direction. This is especially true when the open-edge slot ends of the second slot and the third slot are arranged facing away from each other.

Bevorzugt ist es, wenn der zweite Schlitz und der dritte Schlitz denselben radialen Abstand zu der Führungsfläche aufweisen, so dass ein in Umfangsrichtung gleichmäßiges Verformungsverhalten der Führungsfläche erreicht wird.It is preferred if the second slot and the third slot have the same radial distance to the guide surface, so that a uniform deformation behavior of the guide surface in the circumferential direction is achieved.

Nach einer weiteren Ausführungsform der Erfindung ist mindestens ein zusätzliches Federelement vorgesehen, welches in mindestens einem der Schlitze angeordnet ist. Mit einem solchen Federelement kann die Federhärte der federelastischen Lagerung besonders genau vorgegeben werden. Hierbei wird dem Verformungswiderstand des Führungskörpers eine Federkraft überlagert, welche durch die Vorspannung und Wahl der Federrate des Federelements bestimmt ist. Durch Austausch eines solchen Federelements kann somit ein Führungskörper mit einer in radialer Richtung variablen Federhärte geschaffen werden.According to a further embodiment of the invention, at least one additional spring element is provided, which is arranged in at least one of the slots. With such a spring element, the spring stiffness of the spring-elastic storage can be specified very precisely. In this case, a spring force is superimposed on the deformation resistance of the guide body, which is determined by the bias and choice of the spring rate of the spring element. By replacing such a spring element can thus be created with a variable in the radial direction spring hardness a guide body.

Bevorzugt ist, wenn das Federelement in einem Aufnahmeraum aufgenommen ist, der an eine Schlitzbegrenzung eines Schlitzes angrenzt und dessen Querschnitt im Vergleich zu einem Schlitzquerschnitt erweitert ist. Dies ermöglicht eine einfache und zuverlässige Lagerung eines Federelements.It is preferred if the spring element is received in a receiving space which is adjacent to a slot boundary of a slot and whose cross-section is widened compared to a slot cross-section. This allows a simple and reliable storage of a spring element.

Besonders bevorzugt ist es, wenn in der Führungsfläche mindestens eine sich über einen Teil der Breite der Führungsfläche erstreckende Durchbrechung vorgesehen ist. Die Durchbrechung kann in Form einer taschenförmigen Ausnehmung in dem Führungskörper oder in Form einer nach radial außen offenen Materialaussparung gebildet sein. Die Durchbrechung ermöglicht es, einen auf ein Finishband wirkenden Anpressdruck über die Breite der Führungsfläche verteilt zu variieren. Hierdurch ist es insbesondere möglich, ballige Werkstückoberflächen zu erzeugen, beispielsweise für Mittel- oder Hublager einer Kurbelwelle.It is particularly preferred if at least one opening extending over a part of the width of the guide surface is provided in the guide surface. The opening may be formed in the form of a pocket-shaped recess in the guide body or in the form of a radially outwardly open material recess. The opening makes it possible to vary distributed over the width of the guide surface acting on a finishing belt contact pressure. This makes it possible, in particular, to produce crowned workpiece surfaces, for example for center or stroke bearings of a crankshaft.

Vorzugsweise ist die Durchbrechung bezogen auf die Breite der Führungsfläche zentriert angeordnet, so dass eine in Querrichtung symmetrische Geometrie erzeugt werden kann. Außerdem wird ein seitliches Auswandern des Finishbandes verhindert.Preferably, the opening is centered with respect to the width of the guide surface, so that a symmetrical in the transverse direction geometry can be generated. In addition, a lateral emigration of the finishing tape is prevented.

Weitere Merkmale und Vorteile der Erfindung sind Gegenstand der nachfolgenden Beschreibung und der zeichnerischen Darstellung eines bevorzugten Ausführungsbeispiels.Further features and advantages of the invention are the subject of the following description and the diagrammatic representation of a preferred embodiment.

In den Zeichnungen zeigen:

Figur 1
eine Seitenansicht einer Ausführungsform einer Finishvorrichtung mit einem schematisch dargestellten Führungskörper;
Figur 2
eine perspektivische Ansicht des Führungskörpers gemäß Figur 1;
Figur 3
eine Seitenansicht des Führungskörpers gemäß Figur 1;
Figur 4
eine Vorderansicht des Führungskörpers gemäß Figur 1; und
Figur 5
eine Seitenansicht des Führungskörpers gemäß Figur 1 längs einer in Figur 4 mit V-V markierten Schnittlinie.
In the drawings show:
FIG. 1
a side view of an embodiment of a finishing device with a schematically illustrated guide body;
FIG. 2
a perspective view of the guide body according to FIG. 1 ;
FIG. 3
a side view of the guide body according to FIG. 1 ;
FIG. 4
a front view of the guide body according to FIG. 1 ; and
FIG. 5
a side view of the guide body according to FIG. 1 along a in FIG. 4 with VV marked cutting line.

Eine Ausführungsform einer Finishvorrichtung ist in Figur 1 insgesamt mit dem Bezugszeichen 10 bezeichnet. Die Finishvorrichtung 10 umfast eine Zange 12 mit einem ersten Arm 14 und einem zweiten Arm 16. Die Arme 14 und 16 sind schwenkbar gelagert, so dass sie in Richtung auf ein rotationssymmetrisches Werkstück 18 zugestellt werden können (wie in Figur 1 dargestellt).An embodiment of a finishing device is in FIG. 1 generally designated by the reference numeral 10. The finishing device 10 includes a pair of pliers 12 having a first arm 14 and a second arm 16. The arms 14 and 16 are pivotally mounted so that they can be delivered towards a rotationally symmetric workpiece 18 (as in FIG FIG. 1 shown).

Bei dem Werkstück 18 handelt es sich beispielsweise um eine Kurbelwelle, deren Mittellager oder Hublager finishend bearbeitet werden sollen.The workpiece 18 is, for example, a crankshaft whose central bearing or stroke bearing is to be machined finishend.

Die Finishvorrichtung 10 umfasst ferner ein Finishband 22, welches in Figur 1 strichpunktiert dargestellt ist. Das Finishband 22 wird von einem Finishbandvorrat 24 bereitgestellt, in radialer Richtung auf das Werkstück 18 zugeführt und im Bereich eines Finishband-Einführendes 26 mit einer zylindrischen Werkstückoberfläche 28 des Werkstücks 18 in Kontakt gebracht. Das Finishband 22 ist ausgehend von dem Finishband-Einführende 26 zwischen einem Führungskörper 30 und der Werkstückoberfläche 28 bis hin zu einem Finishband-Ausführende 32 geführt. Im Bereich des Finishband-Ausführendes 32 wird das Finishband von der Werkstückoberfläche 28 nach radial außen von dem Werkstück 18 weggeführt.The finishing device 10 further comprises a finishing belt 22, which in FIG. 1 dash-dotted lines is shown. The finishing tape 22 is provided by a finishing tape supply 24, fed radially to the workpiece 18 and brought into contact with a cylindrical workpiece surface 28 of the workpiece 18 in the region of a finishing tape insertion end 26. The finishing belt 22 is guided from the finishing belt insertion end 26 between a guide body 30 and the workpiece surface 28 up to a finishing belt performer 32. In the area of the finishing belt-executing 32, the finishing belt is led away from the workpiece surface 28 radially outward from the workpiece 18.

In seinem weiteren Verlauf ist das Finishband 22 mittels Umlenkrollen 34 und 36 geführt und mit Hilfe einer Spanneinrichtung 38 gespannt. Die Spanneinrichtung 38 weist ein auf das Finishband 22 wirkendes Spannelement 40 auf, welches gleichzeitig als Umlenkelement dient. Die Spanneinrichtung 38 ist fest mit dem ersten Arm 14 der Zange 12 verbunden.In its further course, the finishing belt 22 is guided by means of deflection rollers 34 and 36 and by means of a Clamping device 38 tensioned. The tensioning device 38 has a clamping element 40 which acts on the finishing belt 22 and simultaneously serves as a deflecting element. The tensioning device 38 is firmly connected to the first arm 14 of the forceps 12.

Der in Figur 1 nur schematisch dargestellte Führungskörper 30 ist an einem Führungskörperhalter 42 fixiert, insbesondere mittels zwei Befestigungselementen 44 und 46, welche mit dem Führungskörper 30 verschraubbar sind. Der Führungskörperhalter 42 weist eine dem Führungskörper 30 zugewandte Fläche 48 auf, welche der Form des Führungskörpers 30 entsprechend konkav gekrümmt ist. Der Führungskörperhalter 42 ist an dem ersten Arm 14 fixiert, insbesondere mittels einer Verschraubung 50.The in FIG. 1 only schematically illustrated guide body 30 is fixed to a guide body holder 42, in particular by means of two fastening elements 44 and 46, which are screwed to the guide body 30. The guide body holder 42 has a surface 48 facing the guide body 30, which is correspondingly concavely curved in the shape of the guide body 30. The guide body holder 42 is fixed to the first arm 14, in particular by means of a screw 50th

Während der finishenden Bearbeitung des Werkstücks 18 wird dieses mittels einer (nicht dargestellten) Antriebseinrichtung um die Werkstückachse 20 rotatorisch angetrieben. Hierbei kann das Finishband 22 feststehen, oder es wird zur Erhöhung der Schnittgeschwindigkeit während der Bearbeitung der Werkstückoberfläche 28 in einer Vorschubrichtung 52 bewegt. Während der Bearbeitung des Werkstücks 18 kann bei Bedarf mittels einer Messeinrichtung 54, welche an dem zweiten Arm 16 befestigt ist, eine Messung des Durchmessers und/oder des Rundlaufs des Werkstücks 18 durchgeführt werden.During finishing machining of the workpiece 18, it is rotationally driven about the workpiece axis 20 by means of a drive device (not shown). Here, 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 52. During the machining of the workpiece 18, a measurement of the diameter and / or the concentricity of the workpiece 18 can be performed if necessary by means of a measuring device 54, which is attached to the second arm 16.

Der Aufbau des Führungskörpers 30 wird im Folgenden unter Bezugnahme auf die Figuren 2 bis 5 beschrieben.The structure of the guide body 30 will be described below with reference to FIGS FIGS. 2 to 5 described.

Der Führungskörper 30 weist zur Führung des Finishbands 22 eine schalenförmige Führungsfläche 56 auf, welche sich zwischen dem Finishband-Einführende 26 und dem Finishband-Ausführende 32 erstreckt. Im Bereich des Finishband-Einführendes 26 geht die Führungsfläche 56 kontinuierlich in eine Finishband-Einführfläche 58 über. Im Bereich des Finishband-Ausführendes 32 geht die Führungsfläche 56 kontinuierlich in eine Finishband-Ausführfläche 60 über. Die Führungsfläche 56 weist parallel zu einer Breitenrichtung 62 eine Breite 64 auf (vgl. Figur 4). An eine erste Seitenfläche 66 und an eine zweite Seitenfläche 68 angrenzend weist die Führungsfläche 56 Teile 70 und 72 auf, in welchen die Führungsfläche 56 in Umfangsrichtung gesehen zwischen der Einführfläche 58 und der Ausführfläche 60 durchgängig ist und keine Unterbrechung aufweist.The guide body 30 has a cup-shaped guide surface 56 for guiding the finish belt 22, which extends between the finish belt insertion end 26 and the finishing belt performer 32. In the area of the finishing tape insertion end 26, the guide surface 56 continuously merges into a finishing belt insertion surface 58. In the area of the finishing belt runner 32, the guide surface 56 continuously merges into a finishing belt leading surface 60. The guide surface 56 has a width 64 parallel to a width direction 62 (cf. FIG. 4 ). Adjacent to a first side surface 66 and to a second side surface 68, the guide surface 56 includes parts 70 and 72 in which the guide surface 56 is continuous between the insertion surface 58 and the delivery surface 60 and has no interruption.

Die Führungsfläche 56 weist einen Krümmungsmittelpunkt 74 auf, vgl. Figur 3. Die Führungsfläche 56 ist in ihrem gesamten Verlauf zwischen der Einführfläche 58 und der Ausführfläche 60 in einer bezogen auf den Krümmungsmittelpunkt 74 radialen Richtung 76 federelastisch gelagert.The guide surface 56 has a center of curvature 74, cf. FIG. 3 , The guide surface 56 is resiliently mounted in its entire course between the insertion surface 58 and the lead-out surface 60 in a radial direction 76 with respect to the center of curvature 74.

Der Führungskörper 30 erstreckt sich bezogen auf den Krümmungsmittelpunkt 74 über einen Winkel 78, welcher vorzugsweise größer als 90° und kleiner als 180° ist, insbesondere zwischen ungefähr 110° und ungefähr 160° beträgt.The guide body 30 extends with respect to the center of curvature 74 over an angle 78, which is preferably greater than 90 ° and less than 180 °, in particular between about 110 ° and about 160 °.

Der Führungskörper 30 ist insbesondere einstückig ausgebildet und weist verschiedene Führungskörperabschnitte auf. Ein erster Führungskörperabschnitt 80 bildet an seiner Außenfläche die Führungsfläche 56. Der erste Führungskörperabschnitt 80 ist nach radial außen durch einen ersten Schlitz 82 begrenzt, welcher sich über die gesamte Breite 64 des Führungskörpers 30 erstreckt. Der erste Schlitz 82 erstreckt sich in Umfangsrichtung zwischen einem ersten Schlitzende 84 und einem zweiten Schlitzende 86. Die Schlitzenden 84 und 86 sind geschlossen. Das erste Schlitzende 84 ist zu dem Finishband-Einführende 26 beabstandet. Das zweite Schlitzende 86 ist zu dem Finishband-Ausführende 32 beabstandet.The guide body 30 is in particular formed in one piece and has various guide body sections. A first guide body portion 80 forms on its outer surface the guide surface 56. The first guide body portion 80 is bounded radially outwardly by a first slot 82 which extends over the entire width 64 of the guide body 30. The first slot 82 extends circumferentially between a first slot end 84 and a second slot end 86. The slot ends 84 and 86 are closed. The first slot end 84 is spaced from the finish tape inserter 26. The second slot end 86 is spaced from the finish belt performer 32.

Der Führungskörper 30 umfasst ferner einen zweiten Schlitz 88 und einen dritten Schlitz 90, welche sich über die gesamte Breite 64 des Führungskörpers 30 erstrecken. Der zweite Schlitz 88 erstreckt sich ausgehend von einem geschlossenen Schlitzende 92 in Richtung auf das Finishband-Einführende 26 und ist an seinem dem Schlitzende 92 abgewandten Schlitzende 94 randoffen.The guide body 30 further includes a second slot 88 and a third slot 90 which extend across the entire width 64 of the guide body 30. The second slot 88 extends from a closed slot end 92 in the direction of the finishing tape insertion end 26 and is open at its end facing away from the slot end 92 slot end 94.

Der dritte Schlitz 90 erstreckt sich zwischen einem geschlossenen Schlitzende 96 und einem randoffenen Schlitzende 98, welches im Bereich des Finishband-Ausführendes 32 vorgesehen ist.The third slot 90 extends between a closed slot end 96 and an open-edge slot end 98 provided in the region of the finish belt performer 32.

Der zweite Schlitz 88 und der dritte Schlitz 90 erstrecken sich koaxial zu dem ersten Schlitz 82. Der zweite Schlitz 88 und der dritte Schlitz 90 sind bezogen auf den ersten Schlitz 82 radial weiter außen angeordnet und weisen denselben radialen Abstand zu dem ersten Schlitz 82 auf. Die geschlossenen Schlitzenden 92 und 96 des zweiten Schlitzes 88 bzw. des dritten Schlitzes 90 sind einander zugewandt und voneinander beabstandet.The second slot 88 and the third slot 90 extend coaxially with the first slot 82. The second slot 88 and the third slot 90 are located radially further outward with respect to the first slot 82 and have the same radial distance from the first slot 82. The closed slot ends 92 and 96 of the second slot 88 and the third slot 90, respectively, face each other and are spaced from each other.

Der erste Schlitz 82 und der zweite Schlitz 88 sind in Umfangsrichtung einander überlappend angeordnet, und zwar in einem Teilbereich 100, welcher in Umfangsrichtung gesehen von dem Finishband-Einführende 26 und von einem zentralen Abschnitt 102 des Führungskörpers 30 beabstandet ist. In entsprechender Weise überlappen sich der erste Schlitz 82 und der dritte Schlitz 90 in einem Teilbereich 104, welcher von dem Finishband-Ausführende 32 und dem zentralen Abschnitt 102 beabstandet ist.The first slot 82 and the second slot 88 are circumferentially overlapping each other in a portion 100 which is circumferentially spaced from the finish tape inserter 26 and from a central portion 102 of the guide body 30. In a corresponding manner, the first slot 82 and the third slot 90 overlap in a partial area 104, which is spaced from the finish belt performer 32 and the central portion 102.

Der zwischen dem ersten Schlitz 82 und dem zweiten Schlitz 88 bzw. dritten Schlitz 90 angeordnete zweite Führungskörperabschnitt ist mit 106 bezeichnet. Ferner weist der Führungskörper 30 einen dritten Führungskörperabschnitt 108 auf, welcher sich zwischen dem zweiten Schlitz 88 und dem dritten Schlitz 90 einerseits und einer der Führungsfläche 56 abgewandten Außenfläche 110 des Führungskörpers 30 andererseits erstreckt.The second guide body portion disposed between the first slot 82 and the second slot 88 and third slot 90, respectively, is designated 106. Furthermore, the guide body 30 has a third guide body section 108 which extends between the second slot 88 and the third slot 90 on the one hand and an outer surface 110 of the guide body 30 facing away from the guide surface 56 on the other hand.

Zur Befestigung des Führungskörpers 30 weist dieser zwei sich in radialer Richtung erstreckende Bohrungen 112 auf (vergleiche Figuren 4 und 5), welche vorzugsweise mit einem Innengewinde zur Verschraubung mit den Befestigungselementen 44 bzw. 46 versehen sind.For attachment of the guide body 30 has this two extending in the radial direction bores 112 (see FIGS. 4 and 5 ), which are preferably provided with an internal thread for screwing with the fastening elements 44 and 46, respectively.

Die Führungsfläche 56 weist eine Mehrzahl von Durchbrechungen auf, welche sich über einen Teil der Breite 64 der Führungsfläche 56 erstrecken. Eine erste Durchbrechung 114 ist im Bereich eines mittigen Führungsflächenabschnitts 116 angeordnet. Die Durchbrechung 114 ist insbesondere in Form einer Aussparung des ersten Führungskörperabschnitts 80 ausgebildet. Die Durchbrechung 114 verjüngt sich in Richtung auf das Finishband-Einführende 26 und in Richtung auf das Finishband-Ausführende 32. Insbesondere ist die Durchbrechung 114 in der Draufsicht rautenförmig.The guide surface 56 has a plurality of openings, which extend over part of the width 64 of the guide surface 56. A first opening 114 is arranged in the region of a central guide surface section 116. The opening 114 is formed in particular in the form of a recess of the first guide body portion 80. The aperture 114 tapers toward the finish tape inserter 26 and towards the finish tape applicator 32. In particular, the aperture 114 is diamond-shaped in plan view.

An den mittigen Führungsflächenabschnitt 116 anschließend weist die Führungsfläche 56 einen ersten endseitigen Führungsflächenabschnitt 118 und einen zweiten endseitigen Führungsflächenabschnitt 120 auf. Auch im Bereich dieser Führungsflächenabschnitte 118, 120 ist die Führungsfläche 56 durchbrochen, nämlich mittels einer zweiten Durchbrechung 122 und mittels einer dritten Durchbrechung 130.Subsequently to the central guide surface section 116, the guide surface 56 has a first end-side guide surface section 118 and a second end-side guide surface section 120. Also in the region of these guide surface sections 118, 120 is the guide surface 56, namely by means of a second opening 122 and by means of a third opening 130th

Die Durchbrechungen 122 und 130 verjüngen sich jeweils in Richtung auf die erste Durchbrechung 114. Insbesondere sind die Durchbrechungen 122 und 130 in der Draufsicht in etwa dreieckförmig.The openings 122 and 130 each taper in the direction of the first opening 114. In particular, the openings 122 and 130 are approximately triangular in plan view.

Der Führungskörper 30 weist ferner benachbart zu dem Finishband-Einführende 26 bzw. dem Finishband-Ausführende 32 angeordnete Aufnahmeräume 132 auf. Diese sind im Profil zylindrisch und grenzen mit ihren teilzylindrischen Begrenzungsflächen an den Begrenzungsflächen des zweiten Schlitzes 88 bzw. des dritten Schlitzes 90 an. Die Aufnahmeräume 132 dienen zur Aufnahme eines Federelements 134, welches in Figur 3 schematisch dargestellt ist. Bei dem Federelement 134 handelt es sich beispielsweise um eine Spiralfeder, welche den ersten Führungskörperabschnitt 80 und den dritten Führungskörperabschnitt 108 in zueinander entgegengesetzten radialen Richtungen mit einer Federkraft beaufschlägt.The guide body 30 also has adjacent to the finishing tape insertion end 26 and the finishing belt performer 32 arranged receiving spaces 132. These are cylindrical in profile and border with their part-cylindrical boundary surfaces on the boundary surfaces of the second slot 88 and the third slot 90 at. The receiving spaces 132 serve to receive a spring element 134, which in FIG. 3 is shown schematically. By way of example, the spring element 134 is a spiral spring, which acts on the first guide body section 80 and the third guide body section 108 in opposite radial directions with a spring force.

Der Führungskörper 30 ermöglicht eine besonders gute Anpassung des Verlaufs des Finishbands 22 an den Verlauf der Werkstückoberfläche 28. Die endseitigen Führungsflächenabschnitte 118 und 120 sind durch die randoffene Ausbildung der Schlitzenden 94 und 98 in radialer Richtung federelastisch gelagert. Eine Verformung oder Verlagerung der endseitigen Führungsflächenabschnitte 118 oder 120 bewirkt eine hierzu in radialer Richtung entgegengesetzt gerichtete Verformung oder Verlagerung des mittigen Führungsflächenabschnitts 116. Dies wird insbesondere erreicht durch den alternierenden Wechsel der in Umfangsrichtung einander überlappenden Anordnung der Schlitze 82, 88 und 90 (in den Teilbereiche 100 und 104) und der einander nicht überlappenden Anordnung der Schlitze 82, 88 und 90 (in den übrigen Teilbereichen).The guide body 30 allows a particularly good adaptation of the course of the finishing tape 22 to the course of the workpiece surface 28. The end-side guide surface sections 118 and 120 are resiliently mounted by the open-edged design of the slot ends 94 and 98 in the radial direction. A deformation or displacement of the end-side guide surface portions 118 or 120 causes this in the radial direction opposite directed deformation or displacement of the central guide surface portion 116. This is achieved in particular by the alternating change in the circumferential direction overlapping arrangement of Slits 82, 88 and 90 (in portions 100 and 104) and the non-overlapping arrangement of slots 82, 88 and 90 (in the remaining portions).

In entsprechender Weise führt eine Verlagerung oder Verformung des mittigen Führungsflächenabschnitts 116 zu einer in radialer Richtung entgegengesetzten Verlagerung oder Verformung der endseitigen Führungsflächenabschnitte 118 und 120.Correspondingly, a displacement or deformation of the central guide surface portion 116 results in a radially opposite displacement or deformation of the end-side guide surface portions 118 and 120.

Die beschriebene Geometrie der Durchbrechungen 114, 122 und 130 ermöglicht es darüber hinaus, die Werkstückoberfläche 28 von einer Zylinderform abweichend ballig zu finishen.The described geometry of the apertures 114, 122 and 130 also makes it possible to finely contour the workpiece surface 28 from a cylindrical shape.

Insgesamt ermöglicht es der Führungskörper 30, die Führungsfläche 56 vollflächig an die Werkstückoberfläche 28 anzulegen, wobei der Durchmesser des Werkstücks 18 innerhalb einer vergleichsweise großen Bandbreite schwanken darf. Somit können unerwünschte Linienberührungen zwischen der Führungsfläche 56 und der Werkstückoberfläche 28 vermieden werden. Somit wird eine Verbesserung des Rundlaufs des Werkstücks 18 erreicht. Während der Bearbeitung des Werkstücks passt sich die Führungsfläche 56 in ihrem Verlauf der Werkstückoberfläche 28 an, welche während der Bearbeitung durch die abrasive Wirkung des Finishbandes 22 in ihrem Durchmesser verkleinert wird. Dabei ermöglichen es die Durchbrechungen 114, 122 und 130, eine von einer zylindrischen Form abweichende Werkstückgeometrie herzustellen, da das Finishband 22 im Bereich der Durchbrechungen mit einem geringeren Anpressdruck gegen die Werkstückoberfläche 28 gedrückt wird.Overall, the guide body 30 makes it possible to apply the guide surface 56 over the entire area to the workpiece surface 28, wherein the diameter of the workpiece 18 may fluctuate within a comparatively large bandwidth. Thus, undesirable line contact between the guide surface 56 and the workpiece surface 28 can be avoided. Thus, an improvement of the concentricity of the workpiece 18 is achieved. During the machining of the workpiece, the guide surface 56 adjusts in its course of the workpiece surface 28, which is reduced during processing by the abrasive action of the finishing belt 22 in diameter. In this case, the openings 114, 122 and 130 make it possible to produce a workpiece geometry deviating from a cylindrical shape, since the finishing belt 22 is pressed against the workpiece surface 28 in the region of the openings with a lower contact pressure.

Die erfindungsgemäße Finishvorrichtung 10 ermöglicht außerdem eine Kompensation von Dickenschwankungen desThe finishing device 10 according to the invention also enables a compensation of thickness variations of

Finishbands 22. Zur weiteren Beeinflussung der in radialer Richtung federelastischen Lagerung der Führungsfläche 56 können Federelemente 134 verwendet werden. Eine weitere Anpassung kann durch die Wahl des Werkstoffs des Führungskörpers 30 erreicht werden, welcher beispielsweise aus einem Federstahl hergestellt ist.Finish bands 22. Spring elements 134 can be used to further influence the spring-elastic support of the guide surface 56 in the radial direction. A further adaptation can be achieved by the choice of the material of the guide body 30, which is made for example of a spring steel.

Claims (14)

Finishvorrichtung (10) zur finishenden Bearbeitung von rotationssymmetrischen Werkstückoberflächen, mit einer Finishbandführung, die einen Führungskörper (30) zur Führung eines Finishbands (22) aufweist, wobei der Führungskörper eine schalenförmige Führungsfläche (56) umfasst, entlang welcher das Finishband (22) zwischen einem Finishband-Einführende (26) und einem Finishband-Ausführende (32) führbar oder geführt ist, wobei die Führungsfläche (56) in radialer Richtung federelastisch gelagert ist, dadurch gekennzeichnet, dass zumindest über einen Teil (70, 72) der Breite (64) der Führungsfläche (56) diese sich in Umfangsrichtung gesehen ohne Unterbrechung zwischen dem Finishband-Einführende (26) und dem Finishband-Ausführende (32) erstreckt und federelastisch gelagert ist.A finishing apparatus (10) for finishing machining of rotationally symmetrical workpiece surfaces, comprising a finishing belt guide having a guide body (30) for guiding a finishing belt (22), the guide body comprising a cup-shaped guide surface (56) along which the finishing belt (22) passes between Finishing belt inserter (26) and a finishing belt-Ausführende (32) is guided or guided, wherein the guide surface (56) is resiliently mounted in the radial direction, characterized in that at least over a part (70, 72) of the width (64) the guide surface (56) extends in the circumferential direction without interruption between the finishing tape insertion end (26) and the finishing tape-Ausführende (32) and is mounted resiliently. Finishvorrichtung (10) nach Anspruch 1, dadurch gekennzeichnet, dass der Führungskörper (30) aus einem federelastischen Material hergestellt ist.Finishing device (10) according to claim 1, characterized in that the guide body (30) is made of a resilient material. Finishvorrichtung (10) nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass zur federelastischen Lagerung der Führungsfläche (56) in dem Führungskörper (30) mindestens ein sich in Umfangsrichtung erstreckender Schlitz (82, 88, 90) vorgesehen ist.Finishing device (10) according to any one of the preceding claims, characterized in that for the resilient mounting of the guide surface (56) in the guide body (30) at least one circumferentially extending slot (82, 88, 90) is provided. Finishvorrichtung (10) nach Anspruch 3, gekennzeichnet durch einen ersten Schlitz (82), der von der Führungsfläche (56) nach radial außen gesehen zu der Führungsfläche (56) benachbart angeordnet ist und in
Umfangsrichtung gesehen an beiden Schlitzenden (84, 86) geschlossen ist.A finishing device (10) according to claim 3, characterized by a first slot (82) which, viewed radially outwards from the guide surface (56), is arranged adjacent to the guide surface (56) and in FIG
As seen in the circumferential direction at both slot ends (84, 86) is closed. Finishvorrichtung (10) nach Anspruch 4, gekennzeichnet durch einen zweiten Schlitz (88), der in radialer Richtung nach außen weiter von der Führungsfläche (56) beabstandet ist als der erste Schlitz (82), wobei der zweite Schlitz (88) an einem seiner Schlitzenden (94) randoffen und an dem entgegensetzten Schlitzende (92) geschlossen ist.The finishing apparatus (10) of claim 4, characterized by a second slot (88) spaced radially outwardly further from the guide surface (56) than the first slot (82), the second slot (88) at one of its ends Slit ends (94) open edge and closed at the opposite slot end (92). Finishvorrichtung (10) nach Anspruch 5, dadurch gekennzeichnet, dass sich der zweite Schlitz (88) in Umfangsrichtung gesehen entlang eines Teils (100) seines Verlaufs mit dem ersten Schlitz (82) überlappt.A finishing device (10) according to claim 5, characterized in that the second slot (88) overlaps along a part (100) of its course with the first slot (82) when viewed in the circumferential direction. Finishvorrichtung (10) nach Anspruch 5 oder 6, gekennzeichnet durch gekennzeichnet durch einen dritten Schlitz (90), der in radialer Richtung nach außen weiter von der Führungsfläche (56) beabstandet ist als der erste Schlitz (82), wobei der dritte Schlitz (90) an einem seiner Schlitzenden (98) randoffen und an dem entgegensetzten Schlitzende (96) geschlossen ist.A finishing apparatus (10) according to claim 5 or 6, characterized by further comprising a third slot (90) spaced radially outwardly from the guide surface (56) than the first slot (82), the third slot (90) ) is open at one of its slot ends (98) and closed at the opposite slot end (96). Finishvorrichtung (10) nach Anspruch 7, dadurch gekennzeichnet, dass sich der dritte Schlitz (90) in Umfangsrichtung gesehen entlang eines Teils (104) seines Verlaufs mit dem ersten Schlitz (82) überlappt.A finishing device (10) according to claim 7, characterized in that the third slot (90) overlaps along a part (104) of its course with the first slot (82) as seen in the circumferential direction. Finishvorrichtung (10) nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die randoffenen Schlitzenden (94, 98) des zweiten Schlitzes (88) und des dritten Schlitzes (90) voneinander abgewandt angeordnet sind.Finishing device (10) according to claim 7 or 8, characterized in that the edge-open slot ends (94, 98) of the second slot (88) and the third slot (90) are arranged facing away from each other. Finishvorrichtung (10) nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass der zweite Schlitz (88) und der dritte Schlitz (90) denselben radialen Abstand zu der Führungsfläche (56) aufweisen.Finishing device (10) according to one of claims 7 to 9, characterized in that the second slot (88) and the third slot (90) have the same radial distance from the guide surface (56). Finishvorrichtung (10) nach einem der voranstehenden Ansprüche, gekennzeichnet durch mindestens ein zusätzliches Federelement (134), welches in mindestens einem der Schlitze (82, 88, 90) angeordnet ist.Finishing device (10) according to one of the preceding claims, characterized by at least one additional spring element (134) which is arranged in at least one of the slots (82, 88, 90). Finishvorrichtung (10) nach Anspruch 11, dadurch gekennzeichnet, dass das Federelement (134) in einem Aufnahmeraum (132) aufgenommen ist, der an eine Schlitzbegrenzung eines Schlitzes (82, 88, 90) angrenzt und dessen Querschnitt im Vergleich zu einem Schlitzquerschnitt erweitert ist.Finishing device (10) according to claim 11, characterized in that the spring element (134) is received in a receiving space (132) adjacent to a slot boundary of a slot (82, 88, 90) and whose cross-section is widened compared to a slot cross-section , Finishvorrichtung (10) nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass in der Führungsfläche (56) mindestens eine sich über einen Teil der Breite der Führungsfläche (56) erstreckende Durchbrechung (114, 122, 130) vorgesehen ist.Finishing device (10) according to one of the preceding claims, characterized in that at least one opening (114, 122, 130) extending over part of the width of the guide surface (56) is provided in the guide surface (56). Finishvorrichtung (10) nach Anspruch 13, dadurch gekennzeichnet, dass die Durchbrechung (114, 122, 130) bezogen auf die Breite (64) der Führungsfläche (56) zentriert angeordnet ist.Finishing device (10) according to claim 13, characterized in that the opening (114, 122, 130) relative to the width (64) of the guide surface (56) is arranged centered.
EP09014666A 2009-11-25 2009-11-25 Finishing device Active EP2327510B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT09014666T ATE515371T1 (en) 2009-11-25 2009-11-25 FINISHING DEVICE
EP09014666A EP2327510B1 (en) 2009-11-25 2009-11-25 Finishing device
CN201010224653XA CN102069441B (en) 2009-11-25 2010-07-13 Finishing device
US12/869,412 US8408973B2 (en) 2009-11-25 2010-08-26 Finishing apparatus with resiliently mountable finishing belt guide

Applications Claiming Priority (1)

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EP09014666A EP2327510B1 (en) 2009-11-25 2009-11-25 Finishing device

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EP2327510A1 true EP2327510A1 (en) 2011-06-01
EP2327510B1 EP2327510B1 (en) 2011-07-06

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Also Published As

Publication number Publication date
CN102069441B (en) 2013-10-02
ATE515371T1 (en) 2011-07-15
US20110306281A1 (en) 2011-12-15
US8408973B2 (en) 2013-04-02
EP2327510B1 (en) 2011-07-06
CN102069441A (en) 2011-05-25

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