EP3294494B1 - Belt finishing device - Google Patents

Belt finishing device Download PDF

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Publication number
EP3294494B1
EP3294494B1 EP17714442.5A EP17714442A EP3294494B1 EP 3294494 B1 EP3294494 B1 EP 3294494B1 EP 17714442 A EP17714442 A EP 17714442A EP 3294494 B1 EP3294494 B1 EP 3294494B1
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EP
European Patent Office
Prior art keywords
finishing
belt
separating
cutting
workpiece
Prior art date
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Active
Application number
EP17714442.5A
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German (de)
French (fr)
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EP3294494A1 (en
EP3294494B2 (en
Inventor
Michael Huber
Simon Wolber
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Supfina Grieshaber GmbH and Co KG
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Supfina Grieshaber GmbH and Co KG
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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
    • B24B21/004—Machines or devices using grinding or polishing belts; Accessories therefor using abrasive rolled strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/02—Machines or devices using grinding or polishing belts; Accessories therefor for grinding rotationally symmetrical surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/18—Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D15/00—Hand tools or other devices for non-rotary grinding, polishing, or stropping
    • B24D15/02—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface
    • B24D15/023—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material
    • B24D15/026—Hand tools or other devices for non-rotary grinding, polishing, or stropping rigid; with rigidly-supported operative surface using in exchangeable arrangement a layer of flexible material able to be stripped-off from a built-in delivery spool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
    • B26D1/245—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0046—Cutting members therefor rotating continuously about an axis perpendicular to the edge

Definitions

  • the invention relates to a belt finishing device, comprising a guide device for guiding the finishing belt, a rotary drive for rotatably driving a workpiece to be finished about its workpiece axis and an oscillation drive, by means of which the finishing belt and the workpiece can be driven in an oscillating manner relative to one another in a direction parallel to the workpiece axis , wherein a finishing tape supply is provided for the finishing belt, out of which the finishing belt can be fed to a working area and from there to a collecting area.
  • Finish finishing of a workpiece is a method of surface machining a workpiece, also referred to as "superfinishing” or “microfinishing”.
  • an abrasive Finish tool in the form of a finishing stone or a finishing tape
  • the workpiece surface to be machined rotates.
  • the rotation of the workpiece surface to be machined is superimposed on an oscillating movement, in which the finishing tool and the workpiece surface to be machined move relative to each other in directions parallel to the axis of rotation.
  • a belt finishing device is for example from the DE 10 2014 213 194 A1 known.
  • To handle the finishing strip supply rolls are used, from which fresh finishing strip is unwound and fed to the work area.
  • the active surface wears off so that fresh finishing strip sections are fed out of the supply at predeterminable intervals.
  • Worn / spent finishing belt sections are fed out of the working area to a collecting area where they are wound onto a collecting roller to be disposed of later.
  • finishing tapes which may be up to 300 meters in length.
  • the winding up of such a long finishing tape is error-prone.
  • the gathering rollers can have a considerable weight in their fully wound state, which makes it difficult to handle the collecting rollers in the course of their disposal. Due to the difficult handling also increases the risk that separates the wound finishing tape from a full collecting role. Overall, designed quick and easy disposal of the finishing tape is difficult.
  • the present invention has the object to simplify the handling of the finishing tape.
  • a separating device for separating finishing belt sections is arranged in the collecting area, which has at least one motor-driven separating element.
  • a separating device is provided in the collecting area, which separates with a motor-driven separating element finishing tape sections.
  • finishing tape sections By separating finishing tape sections, these can be more easily collected and disposed of more easily as compared to winding a complete finishing tape onto a gathering roll.
  • the motor-driven separator makes it possible to control the separator as needed, without the need for manual intervention.
  • the separating device according to the invention is arranged in the collecting region of the belt finishing device, an operation of the separating device is possible without interrupting the producing operation of the belt finishing device, ie the finishing machining of a workpiece surface. It is possible to use the separating device comparatively frequently, so that comparatively short finishing strip sections can be cut off, for example finishing strip sections whose maximum length is only 100 mm. These short finishing tape sections can be collected and easily disposed of, also independent of the state of consumption of the supply roll for fresh finishing tape.
  • the separating device has two separating elements in the form of cutting discs, which cooperate in a separating region.
  • Such a separator allows a particularly reliable separation of finishing tape sections in a localized and thus clearly defined separation area.
  • the cutting wheels comprise a slot cutter disc and a disc cutter disc. These discs rotate in opposite directions of rotation and are engaged with each other such that the disc knife disc engages with a peripheral cutting edge in the groove portion of a Nutmesseral. In this engagement area, the two discs abut each other, so that the finishing belt to be cut can neither escape nor be crushed.
  • the cutting discs are each coupled in motion with a frictional engagement element, and if the frictional engagement elements are in frictional engagement with each other for transmitting a rotational movement of the cutting discs.
  • the rotational movement can be transmitted from one blade to the other blade. Due to the contact between the frictional engagement elements, the frictional engagement elements move in the region of the frictional engagement at the same speed. Therefore, it is preferred if the friction elements are disc-shaped and cylindrical frictional surfaces have, whose distance to the respective axis of rotation is identical relative to each other. In this way it is possible to drive the cutting discs in a simple manner at the same rotational speed.
  • cylindrical frictional engagement surfaces have a radius that at least substantially corresponds to the radius of the cutting discs.
  • the frictional engagement elements are arranged in the running direction of the finishing strip adjacent to the separation area. In this way, the torque transmission takes place immediately adjacent to the separation area.
  • the frictional engagement elements have frictional engagement surfaces which are effective as clamping surfaces for the finishing belt.
  • the frictional surfaces also fulfill another function, namely the fixing of a finishing strip to be cut between the frictional surfaces.
  • the cutting speed across the width of the finishing belt will be at least approximately equal to the advancing speed of the finishing belt in the width direction of the finishing belt. In this way, the finishing belt is clamped and fixed so that the finishing belt is not exposed to further driving forces during the cutting process, ie based on the separator neither attracted too fast nor repelled in the opposite direction.
  • a collection container for collecting separated finishing tape sections is arranged in the collecting area.
  • Such a collection container may not necessarily be able to receive finish tape sections of a complete supply roll. It may also be a small, lightweight and thus easier to handle collection container.
  • the collecting container may be, for example, a collecting trough.
  • the collecting container may be stationarily arranged on the band finishing device, so that it is not movable with respect to a machine frame of the band finishing device.
  • the collecting container is arranged to be movable within the collecting area, for example along a movement axis extending parallel to a workpiece axis.
  • the finishing belt to be cut passes in the collecting area in a vertical direction.
  • Such a finishing tape can be cut particularly easily, in particular when the separating device according to the invention is effective in a horizontal parting plane.
  • the separating device is arranged stationary relative to a machine frame of the belt finishing device.
  • a feed rate of the finishing strip in a direction parallel to the workpiece axis is at least approximately equal to a cutting speed of the separating device over the width of the finishing strip. In this way, the finishing tape is exposed to no further driving forces during the cutting process, so is based on the separator neither attracted too fast nor repelled in the opposite direction.
  • a feed device is provided, by means of which the separating device is movable in parallel to the workpiece axis direction.
  • the separating device (possibly with a collecting container connected to it) can be moved parallel to the workpiece axis, so that a cutting of a finishing tape can be completely independent of the feed and the position of a guide device for guiding the finishing tape in the work area.
  • a feed speed of the feed device is at least approximately equal to a cutting speed of the separator over the width of the finish strip.
  • the finishing tape is exposed to no further driving forces during the cutting process, so is based on the separator neither attracted too fast nor repelled in the opposite direction.
  • the feed device comprises a stationary drive device, so for example a motor, based on the machine frame of the Bandfinishvor substances is stationary.
  • the drive movement of such an engine can be transmitted to the separating device via gear parts (for example a drive belt).
  • the feed device is preferably a linear drive, for example an electric linear motor whose rotor is connected to the separating device.
  • the linear drive is in particular a rodless pneumatic cylinder.
  • a drive device which can be moved together with the separating device, for example a rotary drive arranged on the separating device and which drives a toothed wheel.
  • the gear meshes with a rack which extends parallel to the axis of movement of the, so that the rotational movement of the gear is converted into a feed movement of the separator along the axis of movement.
  • a transmission device for translating a feed movement of the separating device into a drive movement of the separating element.
  • the transmission device comprises, for example, a non-rotatably coupled to a separator gear, which is driven by a drive gear.
  • the drive gear is for example driven directly by an aforementioned rotary drive or by engagement in a parallel to the axis of movement of the separator extending rack.
  • an advancing movement of the separating device is accompanied by a rotational movement of the separating element.
  • the effect Drive device of the feed device as a motor drive for the separating element.
  • the device 10 comprises a machine frame 12 for Arrangement of a rotary drive 14 and an oscillation drive 16.
  • the rotary drive 14 serves to rotatably drive a workpiece 18 about a workpiece axis 20.
  • the oscillation drive 16 serves to superimpose an oscillatory movement on this rotational movement of the workpiece 18. During this oscillation movement, the workpiece 18 reciprocates in a direction parallel to the workpiece axis 20.
  • the workpiece surface to be machined finishend may be, for example, the circumferential surface of a crank pin 22.
  • the belt finishing device 10 For finishing machining of a workpiece surface, the belt finishing device 10 comprises a finishing belt 24 which is fed from a finishing belt supply 26, for example a supply roll. To guide the finishing tape 24, a guide device 28 is provided. This includes in a conventional manner pressing elements which press the finishing belt 24 in a work area 30 against the finish end to be machined workpiece surface.
  • spent finishing tape reaches a collecting area 32.
  • a separating device 34 is arranged in this collecting area.
  • the separating device 34 is arranged stationary with respect to the machine frame 12.
  • a feed of the finishing tape 24 transversely to its direction (ie in the width direction of the finishing tape) in the region of the separating device 34 can be achieved in that the guide means 28 parallel to Workpiece axis 20 are moved, for example by means of a carriage 36th
  • a band finishing device 10 typically has a plurality of guide means 28 which are arranged parallel to each other, so that viewed along the workpiece axis 20 at the same time a plurality of finishing tapes 24 with different workpiece surfaces of a workpiece 18 can be engaged.
  • the separating device 34 is guided along a guide device 38 along a movement axis 40 and movable.
  • the movement axis 40 extends parallel to the workpiece axis 20.
  • the guide device 38 has a rail-shaped main body 42.
  • the base body 42 serves to arrange a feed device 44 in the form of a linear drive 46.
  • the linear drive 46 serves to drive a rotor 48, which carries the separating device 34, along the movement axis 40.
  • the separating device 34 has two separating elements 50 and 52, which are designed in the form of two cutting discs 54 and 56.
  • the cutting discs 54 and 56 cooperate with respective cutting edges in a separation area 58.
  • One of the cutting edges is formed in that the cutting disk 54 is formed as a disc knife disc.
  • the other cutting edge is formed by the fact that the cutting disc 56 is formed as Nutmesseral.
  • the cutting discs 50 and 52 rotate about mutually parallel axes of rotation 64 and 66, which are oriented parallel to a course 68 of the finishing belt 24 in the collecting region 32.
  • a compression spring 70 is provided to generate a pressing force in parallel to the direction 68 direction. This presses the cutting edge of the cutting disc 54 against the cutting edge of the cutting disc 56th
  • axes of rotation 64, 66 bearing body 72, 74 are provided for pivotal mounting of the cutting wheels 54, 56 about the axes of rotation 64, 66 bearing body 72, 74. These are each connected to carriages 76, 78, which are movable relative to slide carriers 80, 82 along carriage axes 84, 86.
  • the carriage axes 84, 86 are aligned parallel to each other; in particular, the axes 84 and 86 are aligned with each other.
  • the axes 84 and 86 are oriented perpendicular to the axes of rotation 64 and 66 and perpendicular to the workpiece axis 20.
  • the carriages 76, 78 are force-urged parallel to the carriage axes 84, 86 by means of tension springs 88 in the direction of one another. A corresponding opposing force is generated in a region 90 in which two frictional engagement elements 91 and 92 abut each other in a friction-locked manner.
  • the frictional engagement elements 91 and 92 are each rotatably coupled to one of the cutting wheels 54, 56.
  • the frictional engagement elements 91, 92 have cylindrical frictional surfaces 94, 96, which are in frictional engagement with each other in the region 90.
  • the frictional surfaces 94, 96 are made for example of a plastic, in particular of Vulkollan®.
  • the region 90 is arranged along the course 68 of the finishing tape 24 immediately adjacent to the separation region 58.
  • a transmission device 98 is provided, which translates a movement of the separating device 34 along the movement axis 40 into a drive movement of the cutting discs 54, 56.
  • the gear mechanism 98 comprises a toothed rod 100 fixedly connected to the main body 42 and extending along the rail.
  • the toothed rack 100 cooperates with a toothed wheel 102, which is rotatably mounted on the separating device 34 about a rotation axis 104.
  • a rotational movement of the gear 102 is transmitted by meshing engagement on a further gear 106 which is non-rotatably connected to the frictional engagement element 92 and the cutting disc 56.
  • a movement of the separating device 34 along the movement axis 40 by means of the feed device 44 causes the gear wheel 102 rolls on the rack 100.
  • the resulting rotational movement of the gear 102 is transmitted in the opposite direction of rotation to the gear 106, which thus rotates about the rotation axis 66, together with the frictionally engaging element 92 and the cutting disc 56th
  • a feed direction 108 of the feed device 44 is shown, which is translated into a rotational movement 110 of the gear 102.
  • the gear 106 rotates in opposite directions about the axis 66; the cutting wheel 54 rotates relative to the direction of rotation 110 in the same direction about the axis 64th
  • the finishing belt 24 arrives in the engagement region 90 between the frictional surfaces 91 and 92 and is drawn into the engagement region 90 from the viewpoint of the finishing belt 24, so that the frictional surfaces 94, 96 as Clamping surfaces for the finishing belt 24 are effective.
  • the finishing belt 24 to be cut is fixed in the region 90 and can be severed immediately adjacent thereto in the separation region 58. Since the cutting edges of the cutting wheels 54, 56 have substantially the same diameter as the cylindrical frictional surfaces 94, 96, the cutting speed across the width of the finishing belt 24 is at least approximately equal to the peripheral speed of the frictional surfaces 94, 96 in the region 90. In this way the finishing belt 24 can be severed as far as possible without transverse force.
  • the collecting container 112 is, for example, a collecting trough 114, which is movable together with the separating device 34 along the movement axis 40. Finishing belt sections collected in the collection trough 114 can be disposed of from there or else merely temporarily stored in the collecting trough 114 and fed from there to a stationary additional collecting tank 116. For the transfer of finishing tape sections from the collecting channel 114 in the additional collecting container 116, for example, slide or blower can be used. It It is also conceivable that the collecting channel 114 extends along the entire length of the rail 42.
  • Disposal of the collecting channel 114 can by means of a conveyor belt.
  • a conveyor belt preferably extends along a bottom of the collecting trough 114.
  • a manual disposal of the collecting channel 114 is possible.
  • FIGS. 5 to 7 Another embodiment of a separator 34 described.
  • This separating device 34 is a stationary separating device, which therefore can not be moved along a movement axis 40 parallel to the workpiece axis 20 in a feed direction.
  • the separator 34 according to FIGS. 5 to 7 has a drive motor 118 which drives a cutting disc 56 about a rotation axis 66 in the direction of rotation. A transmission of the rotational movement to a further cutting disc 54 about an axis 64 by means of frictional engagement elements 91 and 92, as described above with reference to FIGS. 2 to 4 described.
  • the axes 64 and 66 are each arranged on approximately parallel to the workpiece axis 20 extending beams 120, 122.
  • the carriers 120, 122 are acted upon in directions facing each other with tension springs 88.
  • the corresponding counterforce is created in the engagement region 90 by pressure contact of the friction engagement elements 90 and 92.
  • a spacing device 124 is provided intended. This has a spindle axis 126 which is supported on the carrier 120 and is effective against the carrier 122, so that the carriers 120 and 122 against the force of the tension springs 88 can be pressed apart.
  • one of the carriers is stationary, for example the carrier 120, while the other carrier is movable, for example the carrier 122.
  • the separating device 34 comprises according to FIGS. 5 to 7 Guide elements 126, 128, which are effective in a guide plane, which is oriented perpendicular to the running direction of the finishing tape 24.
  • the guide elements 126, 128 define a V-shaped tapered guide space (see. FIG. 6 ).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Description

Die Erfindung betrifft eine Bandfinishvorrichtung, umfassend eine Führungseinrichtung zur Führung von Finishband, einen Rotationsantrieb zum rotatorischen Antrieb eines finishend zu bearbeitenden Werkstücks um dessen Werkstückachse und einen Oszillationsantrieb, mittels welchem das Finishband und das Werkstück in einer zu der Werkstückachse parallelen Richtung relativ zueinander oszillierend antreibbar sind, wobei für das Finishband ein Finishbandvorrat vorgesehen ist, aus welchem heraus das Finishband einem Arbeitsbereich und von dort aus einem Sammelbereich zuführbar ist.The invention relates to a belt finishing device, comprising a guide device for guiding the finishing belt, a rotary drive for rotatably driving a workpiece to be finished about its workpiece axis and an oscillation drive, by means of which the finishing belt and the workpiece can be driven in an oscillating manner relative to one another in a direction parallel to the workpiece axis , wherein a finishing tape supply is provided for the finishing belt, out of which the finishing belt can be fed to a working area and from there to a collecting area.

Die finishende Bearbeitung eines Werkstücks ist ein auch als "Superfinishen" oder "Feinstbearbeitungsverfahren" bezeichnetes Verfahren zur Oberflächenbearbeitung eines Werkstücks. Bei diesem Verfahren wird ein abrasiv wirkendes Finishwerkzeug (in Form eines Finishsteins oder eines Finishbands) auf die zu bearbeitende Werkstückoberfläche gedrückt. Dabei rotiert die zu bearbeitende Werkstückoberfläche. Üblicherweise wird der Rotation der zu bearbeitenden Werkstückoberfläche eine oszillierende Bewegung überlagert, bei welcher sich das Finishwerkzeug und die zu bearbeitende Werkstückoberfläche in zu der Rotationsachse parallelen Richtungen relativ zueinander bewegen.Finish finishing of a workpiece is a method of surface machining a workpiece, also referred to as "superfinishing" or "microfinishing". In this process, an abrasive Finish tool (in the form of a finishing stone or a finishing tape) pressed onto the workpiece surface to be machined. The workpiece surface to be machined rotates. Usually, the rotation of the workpiece surface to be machined is superimposed on an oscillating movement, in which the finishing tool and the workpiece surface to be machined move relative to each other in directions parallel to the axis of rotation.

Eine Bandfinishvorrichtung ist beispielsweise aus der DE 10 2014 213 194 A1 bekannt. Zur Handhabung des Finishbands kommen Vorratsrollen zum Einsatz, von denen frisches Finishband abgewickelt und dem Arbeitsbereich zugeführt wird. Durch den abrasiven Eingriff einer Wirkfläche des Finishbands und der finishend zu bearbeitenden Werkstückoberfläche nutzt sich die Wirkfläche ab, sodass in vorgebbaren Intervallen frische Finishbandabschnitte aus dem Vorrat heraus zugeführt werden. Abgenutzte/verbrauchte Finishbandabschnitte werden aus dem Arbeitsbereich heraus einem Sammelbereich zugeführt und dort auf eine später zu entsorgende Sammelrolle aufgewickelt.A belt finishing device is for example from the DE 10 2014 213 194 A1 known. To handle the finishing strip, supply rolls are used, from which fresh finishing strip is unwound and fed to the work area. As a result of the abrasive engagement of an effective surface of the finishing strip and the workpiece surface to be finish-finished, the active surface wears off so that fresh finishing strip sections are fed out of the supply at predeterminable intervals. Worn / spent finishing belt sections are fed out of the working area to a collecting area where they are wound onto a collecting roller to be disposed of later.

In der Praxis gibt es eine Entwicklung dahingehend, Vorratsrollen mit Finishbändern bereitzustellen, die eine Länge von bis zu 300 Metern haben können. Das Aufwickeln eines solch langen Finishbands ist fehleranfällig. Ferner können die Sammelrollen in ihrem voll aufgewickelten Zustand ein erhebliches Gewicht aufweisen, was die Handhabung der Sammelrollen im Zuge ihrer Entsorgung erschwert. Bedingt durch die erschwerte Handhabung steigt auch das Risiko, das sich das aufgewickelte Finishband von einer vollen Sammelrolle ablöst. Insgesamt gestaltet sich eine schnelle und einfache Entsorgung des Finishbands als schwierig.In practice, there is a trend to provide stock rolls with finishing tapes which may be up to 300 meters in length. The winding up of such a long finishing tape is error-prone. Furthermore, the gathering rollers can have a considerable weight in their fully wound state, which makes it difficult to handle the collecting rollers in the course of their disposal. Due to the difficult handling also increases the risk that separates the wound finishing tape from a full collecting role. Overall, designed quick and easy disposal of the finishing tape is difficult.

Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, die Handhabung des Finishbands zu vereinfachen.On this basis, the present invention has the object to simplify the handling of the finishing tape.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass in dem Sammelbereich eine Trenneinrichtung zum Abtrennen von Finishbandabschnitten angeordnet ist, welche mindestens ein motorisch angetriebenes Trennelement aufweist.This object is achieved in that a separating device for separating finishing belt sections is arranged in the collecting area, which has at least one motor-driven separating element.

Erfindungsgemäß ist in dem Sammelbereich eine Trenneinrichtung vorgesehen, die mit einem motorisch angetriebenen Trennelement Finishbandabschnitte abtrennt. Durch die Abtrennung von Finishbandabschnitten können diese im Vergleich zu einer Aufwicklung eines vollständigen Finishbands auf eine Sammelrolle einfacher gesammelt und einfacher entsorgt werden. Das motorisch angetriebene Trennelement ermöglicht es, die Trenneinrichtung bedarfsweise anzusteuern, ohne dass es eines manuellen Eingriffs bedarf.According to the invention a separating device is provided in the collecting area, which separates with a motor-driven separating element finishing tape sections. By separating finishing tape sections, these can be more easily collected and disposed of more easily as compared to winding a complete finishing tape onto a gathering roll. The motor-driven separator makes it possible to control the separator as needed, without the need for manual intervention.

Da die erfindungsgemäße Trenneinrichtung in dem Sammelbereich der Bandfinishvorrichtung angeordnet ist, ist ein Betrieb der Trenneinrichtung möglich, ohne den produzierenden Betrieb der Bandfinishvorrichtung, also die finishende Bearbeitung einer Werkstückoberfläche, zu unterbrechen. Es ist möglich, die Trenneinrichtung vergleichsweise häufig einzusetzen, sodass vergleichsweise kurze Finishbandabschnitte abgetrennt werden können, beispielsweise Finishbandabschnitte, deren Länge maximal lediglich 100 mm beträgt. Diese kurzen Finishbandabschnitte können aufgefangen und in einfacher Weise entsorgt werden, auch unabhängig von dem Verbrauchszustand der Vorratsrolle für frisches Finishband.Since the separating device according to the invention is arranged in the collecting region of the belt finishing device, an operation of the separating device is possible without interrupting the producing operation of the belt finishing device, ie the finishing machining of a workpiece surface. It is possible to use the separating device comparatively frequently, so that comparatively short finishing strip sections can be cut off, for example finishing strip sections whose maximum length is only 100 mm. These short finishing tape sections can be collected and easily disposed of, also independent of the state of consumption of the supply roll for fresh finishing tape.

Bei einer bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die Trenneinrichtung zwei Trennelemente in Form von Trennscheiben aufweist, die in einem Trennbereich zusammenwirken. Eine solche Trenneinrichtung ermöglicht eine besonders zuverlässige Abtrennung von Finishbandabschnitten in einem lokal begrenzten und somit eindeutig definierten Trennbereich.In a preferred embodiment of the invention it is provided that the separating device has two separating elements in the form of cutting discs, which cooperate in a separating region. Such a separator allows a particularly reliable separation of finishing tape sections in a localized and thus clearly defined separation area.

Eine besonders zuverlässige Abtrennung von Finishbandabschnitten wird ermöglicht, wenn die Trennscheiben eine Nutmesserscheibe und einer Tellermesserscheibe umfassen. Diese Scheiben rotieren in gegenläufigen Rotationsrichtungen und stehen miteinander derart in Eingriff, dass die Tellermesserscheibe mit einer umlaufenden Schneidkante in den Nutbereich einer Nutmesserscheibe eingreift. In diesem Eingriffsbereich liegen die beiden Scheiben aneinander an, sodass das zu durchtrennende Finishband weder ausweichen noch verquetscht werden kann.A particularly reliable separation of finishing belt sections is made possible if the cutting wheels comprise a slot cutter disc and a disc cutter disc. These discs rotate in opposite directions of rotation and are engaged with each other such that the disc knife disc engages with a peripheral cutting edge in the groove portion of a Nutmesserscheibe. In this engagement area, the two discs abut each other, so that the finishing belt to be cut can neither escape nor be crushed.

Vorteilhaft ist es ferner, wenn die Trennscheiben jeweils mit einem Reibschlusselement bewegungsgekoppelt sind, und wenn die Reibschlusselemente zur Übertragung einer Drehbewegung der Trennscheiben miteinander in Reibschluss stehen. Auf diese Weise kann die Drehbewegung von einer Trennscheibe auf die andere Trennscheibe übertragen werden. Infolge des Kontakts zwischen den Reibschlusselementen bewegen sich die Reibschlusselemente im Bereich des Reibschlusses mit derselben Geschwindigkeit. Daher ist es bevorzugt, wenn die Reibschlusselemente scheibenförmig ausgebildet sind und zylindrische Reibschlussflächen aufweisen, deren Abstand zur jeweiligen Rotationsachse relativ zueinander identisch ist. Auf diese Weise ist es möglich, die Trennscheiben in einfacher Weise mit derselben Umdrehungsgeschwindigkeit anzutreiben.It is also advantageous if the cutting discs are each coupled in motion with a frictional engagement element, and if the frictional engagement elements are in frictional engagement with each other for transmitting a rotational movement of the cutting discs. In this way, the rotational movement can be transmitted from one blade to the other blade. Due to the contact between the frictional engagement elements, the frictional engagement elements move in the region of the frictional engagement at the same speed. Therefore, it is preferred if the friction elements are disc-shaped and cylindrical frictional surfaces have, whose distance to the respective axis of rotation is identical relative to each other. In this way it is possible to drive the cutting discs in a simple manner at the same rotational speed.

Es ist ferner bevorzugt, dass die zylindrischen Reibschlussflächen einen Radius aufweisen, der zumindest im Wesentlichen dem Radius der Trennscheiben entspricht. Hierdurch wird ein vergleichsweise einfacher Aufbau der Trenneinrichtung ermöglicht. Außerdem ergeben sich in Verbindung mit nachfolgend beschriebenen Ausgestaltungen der Erfindung weitere Vorteile.It is further preferred that the cylindrical frictional engagement surfaces have a radius that at least substantially corresponds to the radius of the cutting discs. As a result, a comparatively simple construction of the separating device is made possible. In addition, in connection with embodiments of the invention described below, further advantages result.

Es ist insbesondere bevorzugt, dass die Reibschlusselemente in Verlaufsrichtung des Finishbands gesehen benachbart zu dem Trennbereich angeordnet sind. Auf diese Weise erfolgt die Drehmomentübertragung unmittelbar benachbart zu dem Trennbereich. Dies ist insbesondere dann vorteilhaft, wenn die Reibschlusselemente Reibschlussflächen aufweisen, welche als Klemmflächen für das Finishband wirksam sind. In diesem Fall erfüllen die Reibschlussflächen zusätzlich zu ihrer Funktion der Drehmomentübertragung eine weitere Funktion, nämlich die Fixierung eines zu durchtrennenden Finishbands zwischen den Reibschlussflächen.It is particularly preferred that the frictional engagement elements are arranged in the running direction of the finishing strip adjacent to the separation area. In this way, the torque transmission takes place immediately adjacent to the separation area. This is particularly advantageous when the frictional engagement elements have frictional engagement surfaces which are effective as clamping surfaces for the finishing belt. In this case, in addition to their function of torque transmission, the frictional surfaces also fulfill another function, namely the fixing of a finishing strip to be cut between the frictional surfaces.

Wenn, wie oben erläutert, die Reibschlussflächen zumindest im Wesentlichen denselben Radius haben, wie die Wirkbereiche der Trennelemente, entspricht die über die Breite des Finishbands anliegende Schnittgeschwindigkeit zumindest ungefähr der Vorschubgeschwindigkeit des Finishbands in Breitenrichtung des Finishbands gesehen. Auf diese Weise wird das Finishband so geklemmt und fixiert, dass das Finishband während des Durchtrennungsvorgangs keinen weiteren Antriebskräften ausgesetzt ist, also bezogen auf die Trenneinrichtung weder zu schnell angezogen noch in entgegengesetzter Richtung abgestoßen wird.As explained above, if the frictional engagement surfaces have at least substantially the same radius as the effective regions of the separators, the cutting speed across the width of the finishing belt will be at least approximately equal to the advancing speed of the finishing belt in the width direction of the finishing belt. In this way, the finishing belt is clamped and fixed so that the finishing belt is not exposed to further driving forces during the cutting process, ie based on the separator neither attracted too fast nor repelled in the opposite direction.

In vorteilhafter Weise ist im Sammelbereich ein Sammelbehälter zum Sammeln von abgetrennten Finishbandabschnitten angeordnet. Ein solcher Sammelbehälter muss nicht notwendigerweise in der Lage sein, Finishbandabschnitte einer vollständigen Vorratsrolle aufzunehmen. Es kann sich auch um einen kleinen, leichten und somit einfacher handhabbaren Sammelbehälter handeln.Advantageously, a collection container for collecting separated finishing tape sections is arranged in the collecting area. Such a collection container may not necessarily be able to receive finish tape sections of a complete supply roll. It may also be a small, lightweight and thus easier to handle collection container.

Bei dem Sammelbehälter kann es sich beispielsweise um eine Sammelrinne handeln. Der Sammelbehälter kann stationär an der Bandfinishvorrichtung angeordnet sein, sodass er bezogen auf ein Maschinengestell der Bandfinishvorrichtung nicht bewegbar ist. Es ist aber auch denkbar, dass der Sammelbehälter innerhalb des Sammelbereichs beweglich angeordnet ist, beispielsweise entlang einer parallel zu einer Werkstückachse verlaufenden Bewegungsachse.The collecting container may be, for example, a collecting trough. The collecting container may be stationarily arranged on the band finishing device, so that it is not movable with respect to a machine frame of the band finishing device. However, it is also conceivable that the collecting container is arranged to be movable within the collecting area, for example along a movement axis extending parallel to a workpiece axis.

Für einen einfachen Aufbau der Bandfinishvorrichtung ist es bevorzugt, wenn das zu durchtrennende Finishband in dem Sammelbereich in einer vertikalen Richtung verläuft. Ein solches Finishband kann besonders einfach durchtrennt werden, insbesondere dann, wenn die erfindungsgemäße Trenneinrichtung in einer horizontalen Trennebene wirksam ist.For a simple construction of the belt finishing device, it is preferable that the finishing belt to be cut passes in the collecting area in a vertical direction. Such a finishing tape can be cut particularly easily, in particular when the separating device according to the invention is effective in a horizontal parting plane.

Es ist denkbar, dass die Trenneinrichtung bezogen auf ein Maschinengestell der Bandfinishvorrichtung stationär angeordnet ist. In diesem Fall ist es möglich, zu durchtrennende Finishbänder der Trenneinrichtung zuzuführen, indem Führungseinrichtungen, welche das Finishband in dem Arbeitsbereich führen, mittels eines Führungseinrichtungsantriebs angetrieben werden, um das Finishband in Breitenrichtung des Finishbands zu bewegen. Für diesen Fall ist es bevorzugt, wenn eine Vorschubgeschwindigkeit des Finishbands in einer zu der Werkstückachse parallelen Richtung zumindest in etwa gleich einer über die Breite des Finishbands anliegenden Schnittgeschwindigkeit der Trenneinrichtung ist. Auf diese Weise ist das Finishband während des Durchtrennungsvorgangs keinen weiteren Antriebskräften ausgesetzt ist, wird also bezogen auf die Trenneinrichtung weder zu schnell angezogen noch in entgegengesetzter Richtung abgestoßen.It is conceivable that the separating device is arranged stationary relative to a machine frame of the belt finishing device. In this case, it is possible to feed finishing tapes to be severed to the separator by means of guide means guiding the finishing tape in the work area Guide device drive are driven to move the finishing belt in the width direction of the finishing tape. For this case, it is preferable if a feed rate of the finishing strip in a direction parallel to the workpiece axis is at least approximately equal to a cutting speed of the separating device over the width of the finishing strip. In this way, the finishing tape is exposed to no further driving forces during the cutting process, so is based on the separator neither attracted too fast nor repelled in the opposite direction.

Es ist auch denkbar, dass eine Vorschubeinrichtung vorgesehen ist, mittels welcher die Trenneinrichtung in zu der Werkstückachse paralleler Richtung bewegbar ist. Auf diese Weise kann die Trenneinrichtung (ggf. mit einem mit ihr verbundenen Sammelbehälter) parallel zu der Werkstückachse verfahren werden, sodass eine Durchtrennung eines Finishbands vollständig unabhängig von dem Vorschub und der Position einer Führungseinrichtung zur Führung des Finishbands im Arbeitsbereich erfolgen kann.It is also conceivable that a feed device is provided, by means of which the separating device is movable in parallel to the workpiece axis direction. In this way, the separating device (possibly with a collecting container connected to it) can be moved parallel to the workpiece axis, so that a cutting of a finishing tape can be completely independent of the feed and the position of a guide device for guiding the finishing tape in the work area.

Vorzugsweise ist eine Vorschubgeschwindigkeit der Vorschubeinrichtung zumindest in etwa gleich einer über die Breite des Finishbands anliegenden Schnittgeschwindigkeit der Trenneinrichtung. Auf diese Weise ist das Finishband während des Durchtrennungsvorgangs keinen weiteren Antriebskräften ausgesetzt ist, wird also bezogen auf die Trenneinrichtung weder zu schnell angezogen noch in entgegengesetzter Richtung abgestoßen.Preferably, a feed speed of the feed device is at least approximately equal to a cutting speed of the separator over the width of the finish strip. In this way, the finishing tape is exposed to no further driving forces during the cutting process, so is based on the separator neither attracted too fast nor repelled in the opposite direction.

Es ist möglich, dass die Vorschubeinrichtung eine stationäre Antriebseinrichtung umfasst, also beispielsweise einen Motor, der bezogen auf das Maschinengestell der Bandfinishvorrichtung ortsfest ist. Die Antriebsbewegung eines solchen Motors kann über Getriebeteile (bspw. einen Antriebsriemen) auf die Trenneinrichtung übertragen werden.It is possible that the feed device comprises a stationary drive device, so for example a motor, based on the machine frame of the Bandfinishvorrichtung is stationary. The drive movement of such an engine can be transmitted to the separating device via gear parts (for example a drive belt).

Bei der Vorschubeinrichtung handelt es sich vorzugsweise um einen Linearantrieb, beispielsweise einen elektrischen Linearmotor, dessen Läufer mit der Trenneinrichtung verbunden ist. Bei dem Linearantrieb handelt es sich insbesondere um einen kolbenstangenlosen Pneumatikzylinder.The feed device is preferably a linear drive, for example an electric linear motor whose rotor is connected to the separating device. The linear drive is in particular a rodless pneumatic cylinder.

Es ist auch denkbar, eine gemeinsam mit der Trenneinrichtung bewegbare Antriebseinrichtung vorzusehen, beispielsweise einen an der Trenneinrichtung angeordneten Drehantrieb, der ein Zahnrad antreibt. Das Zahnrad kämmt mit einer Zahnstange, die sich parallel zu der Bewegungsachse der erstreckt, sodass die Drehbewegung des Zahnrads in eine Vorschubbewegung der Trenneinrichtung entlang der Bewegungsachse umgesetzt wird.It is also conceivable to provide a drive device which can be moved together with the separating device, for example a rotary drive arranged on the separating device and which drives a toothed wheel. The gear meshes with a rack which extends parallel to the axis of movement of the, so that the rotational movement of the gear is converted into a feed movement of the separator along the axis of movement.

Schließlich ist es bevorzugt, wenn eine Getriebeeinrichtung zur Übersetzung einer Vorschubbewegung der Trenneinrichtung in eine Antriebsbewegung des Trennelements vorgesehen ist. Auf diese Weise kann auf einen zusätzlichen motorischen Antrieb für das Trennelement verzichtet werden. Die Getriebeeinrichtung umfasst beispielsweise ein mit einem Trennelement drehfest gekoppeltes Zahnrad, das von einem Antriebszahnrad angetrieben wird. Das Antriebszahnrad wird beispielsweise direkt durch einen vorstehend genannten Drehantrieb angetrieben oder durch Eingriff in eine sich parallel zu der Bewegungsachse der Trenneinrichtung erstreckende Zahnstange. In beiden Fällen geht eine Vorschubbewegung der Trenneinrichtung mit einer Drehbewegung des Trennelements einher. Somit wirkt die Antriebseinrichtung der Vorschubeinrichtung als motorischer Antrieb für das Trennelement.Finally, it is preferred if a transmission device is provided for translating a feed movement of the separating device into a drive movement of the separating element. In this way can be dispensed with an additional motor drive for the separator. The transmission device comprises, for example, a non-rotatably coupled to a separator gear, which is driven by a drive gear. The drive gear is for example driven directly by an aforementioned rotary drive or by engagement in a parallel to the axis of movement of the separator extending rack. In both cases, an advancing movement of the separating device is accompanied by a rotational movement of the separating element. Thus, the effect Drive device of the feed device as a motor drive for the separating element.

Weitere Merkmale und Vorteile der Erfindung sind Gegenstand der nachfolgenden Beschreibung und der zeichnerischen Darstellung bevorzugter Ausführungsbeispiele.Further features and advantages of the invention are the subject of the following description and the drawings of preferred embodiments.

In den Zeichnungen zeigen:

Fig. 1
eine perspektivische Ansicht einer Ausführungsform einer Bandfinishvorrichtung;
Fig. 2
eine perspektivische Ansicht einer Trenneinrichtung der Bandfinishvorrichtung gemäß Fig. 1;
Fig. 3
eine Seitenansicht der Trenneinrichtung der Bandfinishvorrichtung gemäß Fig. 1;
Fig. 4
eine Schnittansicht der Trenneinrichtung der Bandfinishvorrichtung gemäß Fig. 1;
Fig. 5
eine Rückansicht einer weiteren Ausführungsform einer Trenneinrichtung;
Fig. 6
eine Draufsicht der Trenneinrichtung gemäß Fig. 5; und
Fig. 7
eine Schnittansicht der Trenneinrichtung der Bandfinishvorrichtung gemäß Fig. 6.
In the drawings show:
Fig. 1
a perspective view of an embodiment of a belt finishing device;
Fig. 2
a perspective view of a separator of the belt finishing device according to Fig. 1 ;
Fig. 3
a side view of the separator of the belt finishing device according to Fig. 1 ;
Fig. 4
a sectional view of the separator of the belt finishing device according to Fig. 1 ;
Fig. 5
a rear view of another embodiment of a separating device;
Fig. 6
a plan view of the separator according to Fig. 5 ; and
Fig. 7
a sectional view of the separator of the belt finishing device according to Fig. 6 ,

Eine Ausführungsform einer Bandfinishvorrichtung ist in der Zeichnung insgesamt mit dem Bezugszeichen 10 bezeichnet. Die Vorrichtung 10 umfasst ein Maschinengestell 12 zur Anordnung eines Rotationsantriebs 14 und eines Oszillationsantriebs 16.An embodiment of a belt finishing device is indicated generally by the reference numeral 10 in the drawing. The device 10 comprises a machine frame 12 for Arrangement of a rotary drive 14 and an oscillation drive 16.

Der Rotationsantrieb 14 dient dazu, ein Werkstück 18 um eine Werkstückachse 20 rotatorisch anzutreiben. Der Oszillationsantrieb 16 dient dazu, dieser Rotationsbewegung des Werkstücks 18 eine Oszillationsbewegung zu überlagern. Bei dieser Oszillationsbewegung bewegt sich das Werkstück 18 in zu der Werkstückachse 20 paralleler Richtung hin und her.The rotary drive 14 serves to rotatably drive a workpiece 18 about a workpiece axis 20. The oscillation drive 16 serves to superimpose an oscillatory movement on this rotational movement of the workpiece 18. During this oscillation movement, the workpiece 18 reciprocates in a direction parallel to the workpiece axis 20.

Bei der finishend zu bearbeitenden Werkstückoberfläche kann es beispielsweise um die Umfangsfläche eines Hubzapfens 22 handeln.The workpiece surface to be machined finishend may be, for example, the circumferential surface of a crank pin 22.

Zur finishenden Bearbeitung einer Werkstückoberfläche umfasst die Bandfinishvorrichtung 10 ein Finishband 24, welches aus einem Finishbandvorrat 26, beispielsweise einer Vorratsrolle, zugeführt wird. Zur Führung des Finishbands 24 ist eine Führungseinrichtung 28 vorgesehen. Diese umfasst in an sich bekannter Weise Andrückelemente, welche das Finishband 24 in einem Arbeitsbereich 30 gegen die finishend zu bearbeitende Werkstückoberfläche andrücken.For finishing machining of a workpiece surface, the belt finishing device 10 comprises a finishing belt 24 which is fed from a finishing belt supply 26, for example a supply roll. To guide the finishing tape 24, a guide device 28 is provided. This includes in a conventional manner pressing elements which press the finishing belt 24 in a work area 30 against the finish end to be machined workpiece surface.

Aus dem Arbeitsbereich 30 heraus gelangt verbrauchtes Finishband zu einem Sammelbereich 32. In diesem Sammelbereich ist eine Trenneinrichtung 34 angeordnet.From the working area 30, spent finishing tape reaches a collecting area 32. A separating device 34 is arranged in this collecting area.

Es ist möglich, dass die Trenneinrichtung 34 bezogen auf das Maschinengestell 12 stationär angeordnet ist. In diesem Fall kann ein Vorschub des Finishbands 24 quer zu dessen Verlaufsrichtung (also in Breitenrichtung des Finishbands) im Bereich der Trenneinrichtung 34 dadurch erreicht werden, dass die Führungseinrichtungen 28 parallel zur Werkstückachse 20 verfahren werden, beispielsweise mittels eines Schlittens 36.It is possible that the separating device 34 is arranged stationary with respect to the machine frame 12. In this case, a feed of the finishing tape 24 transversely to its direction (ie in the width direction of the finishing tape) in the region of the separating device 34 can be achieved in that the guide means 28 parallel to Workpiece axis 20 are moved, for example by means of a carriage 36th

Es versteht sich, dass eine Bandfinishvorrichtung 10 üblicherweise eine Mehrzahl von Führungseinrichtungen 28 aufweist, welche parallel zueinander angeordnet sind, sodass entlang der Werkstückachse 20 gesehen gleichzeitig mehrere Finishbänder 24 mit unterschiedlichen Werkstückoberflächen eines Werkstücks 18 in Eingriff gebracht werden können.It is understood that a band finishing device 10 typically has a plurality of guide means 28 which are arranged parallel to each other, so that viewed along the workpiece axis 20 at the same time a plurality of finishing tapes 24 with different workpiece surfaces of a workpiece 18 can be engaged.

Zur nachfolgenden Erläuterung des Aufbaus und der Funktionsweise der Trenneinrichtung 34 wird auf die Figuren 2 bis 4 verwiesen. Die Trenneinrichtung 34 ist entlang einer Führungseinrichtung 38 längs einer Bewegungsachse 40 geführt und bewegbar. Die Bewegungsachse 40 erstreckt sich parallel zu der Werkstückachse 20. Die Führungseinrichtung 38 weist einen schienenförmigen Grundkörper 42 auf. Der Grundkörper 42 dient zur Anordnung einer Vorschubeinrichtung 44 in Form eines Linearantriebs 46. Der Linearantrieb 46 dient dazu, einen Läufer 48, welcher die Trenneinrichtung 34 trägt, entlang der Bewegungsachse 40 anzutreiben.For the following explanation of the structure and operation of the separator 34 is on the FIGS. 2 to 4 directed. The separating device 34 is guided along a guide device 38 along a movement axis 40 and movable. The movement axis 40 extends parallel to the workpiece axis 20. The guide device 38 has a rail-shaped main body 42. The base body 42 serves to arrange a feed device 44 in the form of a linear drive 46. The linear drive 46 serves to drive a rotor 48, which carries the separating device 34, along the movement axis 40.

Die Trenneinrichtung 34 weist zwei Trennelemente 50 und 52 auf, welche in Form von zwei Trennscheiben 54 und 56 ausgebildet sind. Die Trennscheiben 54 und 56 wirken mit jeweiligen Schneidkanten in einem Trennbereich 58 zusammen. Eine der Schneidkanten wird dadurch gebildet, dass die Trennscheibe 54 als Tellermesserscheibe ausgebildet ist. Die andere Schneidkante wird dadurch gebildet, dass die Trennscheibe 56 als Nutmesserscheibe ausgebildet ist.The separating device 34 has two separating elements 50 and 52, which are designed in the form of two cutting discs 54 and 56. The cutting discs 54 and 56 cooperate with respective cutting edges in a separation area 58. One of the cutting edges is formed in that the cutting disk 54 is formed as a disc knife disc. The other cutting edge is formed by the fact that the cutting disc 56 is formed as Nutmesserscheibe.

Die Trennscheiben 50 und 52 rotieren um zueinander parallele Rotationsachsen 64 und 66, die parallel zu einer Verlaufsrichtung 68 des Finishband 24 in dem Sammelbereich 32 orientiert sind. Zur Erzeugung einer Andrückkraft in zu der Verlaufsrichtung 68 paralleler Richtung ist eine Druckfeder 70 vorgesehen. Diese drückt die Schneidkante der Trennscheibe 54 gegen die Schneidkante der Trennscheibe 56.The cutting discs 50 and 52 rotate about mutually parallel axes of rotation 64 and 66, which are oriented parallel to a course 68 of the finishing belt 24 in the collecting region 32. To generate a pressing force in parallel to the direction 68 direction a compression spring 70 is provided. This presses the cutting edge of the cutting disc 54 against the cutting edge of the cutting disc 56th

Zur Drehlagerung der Trennscheiben 54, 56 um die Drehachsen 64, 66 sind Lagerkörper 72, 74 vorgesehen. Diese sind jeweils mit Schlitten 76, 78 verbunden, welche relativ zu Schlittenträgern 80, 82 entlang von Schlittenachsen 84, 86 verfahrbar sind. Die Schlittenachsen 84, 86 sind parallel zueinander ausgerichtet; insbesondere fluchten die Achsen 84 und 86 miteinander. Die Achsen 84 und 86 sind senkrecht zu den Drehachsen 64 und 66 und senkrecht zu der Werkstückachse 20 orientiert.For pivotal mounting of the cutting wheels 54, 56 about the axes of rotation 64, 66 bearing body 72, 74 are provided. These are each connected to carriages 76, 78, which are movable relative to slide carriers 80, 82 along carriage axes 84, 86. The carriage axes 84, 86 are aligned parallel to each other; in particular, the axes 84 and 86 are aligned with each other. The axes 84 and 86 are oriented perpendicular to the axes of rotation 64 and 66 and perpendicular to the workpiece axis 20.

Die Schlitten 76, 78 sind parallel zu den Schlittenachsen 84, 86 mittels Zugfedern 88 in Richtung aufeinander zu kraftbeaufschlagt. Eine entsprechende Gegenkraft wird in einem Bereich 90 erzeugt, in welchem zwei Reibschlusselemente 91 und 92 reibschlüssig aneinander anliegen. Die Reibschlusselemente 91 und 92 sind jeweils drehfest mit einer der Trennscheiben 54, 56 gekoppelt. Die Reibschlusselemente 91, 92 weisen zylindrische Reibschlussflächen 94, 96 auf, die in dem Bereich 90 miteinander reibschlüssig in Kontakt stehen. Die Reibschlussflächen 94, 96 sind beispielsweise aus einem Kunststoff hergestellt, insbesondere aus Vulkollan®.The carriages 76, 78 are force-urged parallel to the carriage axes 84, 86 by means of tension springs 88 in the direction of one another. A corresponding opposing force is generated in a region 90 in which two frictional engagement elements 91 and 92 abut each other in a friction-locked manner. The frictional engagement elements 91 and 92 are each rotatably coupled to one of the cutting wheels 54, 56. The frictional engagement elements 91, 92 have cylindrical frictional surfaces 94, 96, which are in frictional engagement with each other in the region 90. The frictional surfaces 94, 96 are made for example of a plastic, in particular of Vulkollan®.

Der Bereich 90 ist entlang der Verlaufsrichtung 68 des Finishbands 24 gesehen unmittelbar benachbart zu dem Trennbereich 58 angeordnet.The region 90 is arranged along the course 68 of the finishing tape 24 immediately adjacent to the separation region 58.

Zur Erzeugung einer Drehbewegung der Trennscheiben 54 und 56 ist eine Getriebeeinrichtung 98 vorgesehen, die eine Bewegung der Trenneinrichtung 34 entlang der Bewegungsachse 40 in eine Antriebsbewegung der Trennscheiben 54, 56 übersetzt. Die Getriebeeinrichtung 98 umfasst eine mit dem Grundkörper 42 fest verbundene und sich längs der Schiene erstreckende Zahnstange 100. Die Zahnstange 100 wirkt mit einem Zahnrad 102 zusammen, welches um eine Rotationsachse 104 drehbar an der Trenneinrichtung 34 gelagert ist. Eine Drehbewegung des Zahnrads 102 wird durch kämmenden Eingriff auf ein weiteres Zahnrad 106 übertragen, welches drehfest mit dem Reibschlusselement 92 und der Trennscheibe 56 verbunden ist.To generate a rotational movement of the cutting discs 54 and 56, a transmission device 98 is provided, which translates a movement of the separating device 34 along the movement axis 40 into a drive movement of the cutting discs 54, 56. The gear mechanism 98 comprises a toothed rod 100 fixedly connected to the main body 42 and extending along the rail. The toothed rack 100 cooperates with a toothed wheel 102, which is rotatably mounted on the separating device 34 about a rotation axis 104. A rotational movement of the gear 102 is transmitted by meshing engagement on a further gear 106 which is non-rotatably connected to the frictional engagement element 92 and the cutting disc 56.

Eine Bewegung der Trenneinrichtung 34 längs der Bewegungsachse 40 mittels der Vorschubeinrichtung 44 führt dazu, dass das Zahnrad 102 auf der Zahnstange 100 abwälzt. Die daraus entstehende Drehbewegung des Zahnrads 102 wird in gegensinniger Rotationsrichtung auf das Zahnrad 106 übertragen, welches somit um die Rotationsachse 66 rotiert, und zwar gemeinsam mit dem Reibschlusselement 92 und der Trennscheibe 56.A movement of the separating device 34 along the movement axis 40 by means of the feed device 44 causes the gear wheel 102 rolls on the rack 100. The resulting rotational movement of the gear 102 is transmitted in the opposite direction of rotation to the gear 106, which thus rotates about the rotation axis 66, together with the frictionally engaging element 92 and the cutting disc 56th

Mittels des Reibschlusses zwischen dem Reibschlusselement 92 und dem Reibschlusselement 91 wird die Drehbewegung der Trennscheibe 56 in eine gegenläufige Drehbewegung um die Achse 64 übertragen, bei welcher die Trennscheibe 54 rotiert.By means of the frictional engagement between the frictional engagement element 92 and the frictional engagement element 91, the rotational movement of the cutting disc 56 is transmitted in an opposite rotational movement about the axis 64, in which the cutting disc 54 rotates.

In Figur 2 ist beispielhaft eine Vorschubrichtung 108 der Vorschubeinrichtung 44 eingezeichnet, welche in eine Drehbewegung 110 des Zahnrads 102 übersetzt wird. Bezogen auf die Drehrichtung 110 rotiert das Zahnrad 106 gegensinnig um die Achse 66; die Trennscheibe 54 rotiert bezogen auf die Drehrichtung 110 gleichsinnig um die Achse 64.In FIG. 2 For example, a feed direction 108 of the feed device 44 is shown, which is translated into a rotational movement 110 of the gear 102. Based on the direction of rotation 110, the gear 106 rotates in opposite directions about the axis 66; the cutting wheel 54 rotates relative to the direction of rotation 110 in the same direction about the axis 64th

Wenn die Trenneinrichtung 34 in Vorschubrichtung 108 in Richtung auf das Finishband 24 verfahren wird, gelangt das Finishband 24 in dem Eingriffbereich 90 zwischen den Reibschlussflächen 91 und 92 und wird aus Sicht des Finishbands 24 in den Eingriffsbereich 90 hineingezogen, sodass die Reibschlussflächen 94, 96 als Klemmflächen für das Finishband 24 wirksam sind. Auf diese Weise ist das zu durchtrennende Finishband 24 in dem Bereich 90 fixiert und kann unmittelbar benachbart dazu in dem Trennbereich 58 durchtrennt werden. Da die Schneidkanten der Trennscheiben 54, 56 im Wesentlichen denselben Durchmesser aufweisen wie die zylindrischen Reibschlussflächen 94, 96, ist die über die Breite des Finishbands 24 anliegende Schnittgeschwindigkeit zumindest in etwa gleich der Umfangsgeschwindigkeit der Reibschlussflächen 94, 96 in dem Bereich 90. Auf diese Weise kann das Finishband 24 weitestgehend querkraftfrei durchtrennt werden.When the separating device 34 is moved in the direction of advance 108 in the direction of the finishing belt 24, the finishing belt 24 arrives in the engagement region 90 between the frictional surfaces 91 and 92 and is drawn into the engagement region 90 from the viewpoint of the finishing belt 24, so that the frictional surfaces 94, 96 as Clamping surfaces for the finishing belt 24 are effective. In this way, the finishing belt 24 to be cut is fixed in the region 90 and can be severed immediately adjacent thereto in the separation region 58. Since the cutting edges of the cutting wheels 54, 56 have substantially the same diameter as the cylindrical frictional surfaces 94, 96, the cutting speed across the width of the finishing belt 24 is at least approximately equal to the peripheral speed of the frictional surfaces 94, 96 in the region 90. In this way the finishing belt 24 can be severed as far as possible without transverse force.

Von dem Finishband 24 abgetrennte Abschnitte können in einem Sammelbehälter 112 gesammelt werden. Bei dem Sammelbehälter 112 handelt es sich beispielsweise um eine Sammelrinne 114, welche gemeinsam mit der Trenneinrichtung 34 entlang der Bewegungsachse 40 bewegbar ist. In der Sammelrinne 114 gesammelte Finishbandabschnitte können von dort aus entsorgt werden oder aber in der Sammelrinne 114 lediglich zwischengespeichert und von dort einem stationären Zusatzsammelbehälter 116 zugeführt werden. Für die Überführung von Finishbandabschnitten aus der Sammelrinne 114 in den Zusatzsammelbehälter 116 können beispielsweise Schieber oder Gebläse verwendet werden. Es ist auch denkbar, dass sich die Sammelrinne 114 entlang der gesamten Länge der Schiene 42 erstreckt.Portions separated from the finishing belt 24 may be collected in a sump 112. The collecting container 112 is, for example, a collecting trough 114, which is movable together with the separating device 34 along the movement axis 40. Finishing belt sections collected in the collection trough 114 can be disposed of from there or else merely temporarily stored in the collecting trough 114 and fed from there to a stationary additional collecting tank 116. For the transfer of finishing tape sections from the collecting channel 114 in the additional collecting container 116, for example, slide or blower can be used. It It is also conceivable that the collecting channel 114 extends along the entire length of the rail 42.

Eine Entsorgung der Sammelrinne 114 kann mittels eines Förderbands. Ein solches Förderband erstreckt sich vorzugsweise entlang eines Bodens der Sammelrinne 114.Disposal of the collecting channel 114 can by means of a conveyor belt. Such a conveyor belt preferably extends along a bottom of the collecting trough 114.

Auch eine manuelle Entsorgung der Sammelrinne 114 ist möglich.A manual disposal of the collecting channel 114 is possible.

Nachfolgend wird unter Bezugnahme auf Figuren 5 bis 7 eine weitere Ausführungsform einer Trenneinrichtung 34 beschrieben. Bei dieser Trenneinrichtung 34 handelt es sich um eine stationäre Trenneinrichtung, welche also nicht entlang einer Bewegungsachse 40 parallel zu der Werkstückachse 20 in einer Vorschubrichtung bewegbar ist. Die Trenneinrichtung 34 gemäß Figuren 5 bis 7 weist einen Antriebsmotor 118 auf, der eine Trennscheibe 56 um eine Drehachse 66 in Drehrichtung antreibt. Eine Übertragung der Drehbewegung auf eine weitere Trennscheibe 54 um eine Achse 64 erfolgt mittels Reibschlusselementen 91 und 92, wie vorstehend unter Bezugnahme auf Figuren 2 bis 4 beschrieben.The following is with reference to FIGS. 5 to 7 Another embodiment of a separator 34 described. This separating device 34 is a stationary separating device, which therefore can not be moved along a movement axis 40 parallel to the workpiece axis 20 in a feed direction. The separator 34 according to FIGS. 5 to 7 has a drive motor 118 which drives a cutting disc 56 about a rotation axis 66 in the direction of rotation. A transmission of the rotational movement to a further cutting disc 54 about an axis 64 by means of frictional engagement elements 91 and 92, as described above with reference to FIGS. 2 to 4 described.

Die Achsen 64 und 66 sind jeweils an etwa parallel zu der Werkstückachse 20 erstreckenden Trägern 120, 122 angeordnet. Die Träger 120, 122 sind in einander zugewandte Richtungen mit Zugfedern 88 beaufschlagt. Die entsprechende Gegenkraft entsteht in dem Eingriffsbereich 90 durch Druckkontakt der Reibschlusselemente 90 und 92.The axes 64 and 66 are each arranged on approximately parallel to the workpiece axis 20 extending beams 120, 122. The carriers 120, 122 are acted upon in directions facing each other with tension springs 88. The corresponding counterforce is created in the engagement region 90 by pressure contact of the friction engagement elements 90 and 92.

Um im Wartungsfall die Trennscheiben 54 und 56 in einer zu der Werkstückachse 20 senkrechten Richtung voneinander entfernen zu können, ist eine Abstandseinrichtung 124 vorgesehen. Diese weist eine Spindelachse 126 auf, die sich an dem Träger 120 abstützt und gegen den Träger 122 wirksam ist, sodass die Träger 120 und 122 entgegen der der Kraft der Zugfedern 88 auseinander gedrückt werden können. Vorzugsweise ist einer der Träger ortsfest, beispielsweise der Träger 120, während der andere Träger beweglich ist, beispielsweise der Träger 122.In order to be able to remove the cutting discs 54 and 56 from one another in a direction perpendicular to the workpiece axis 20 in the maintenance case, a spacing device 124 is provided intended. This has a spindle axis 126 which is supported on the carrier 120 and is effective against the carrier 122, so that the carriers 120 and 122 against the force of the tension springs 88 can be pressed apart. Preferably, one of the carriers is stationary, for example the carrier 120, while the other carrier is movable, for example the carrier 122.

Zur Vereinfachung der Zuführung von Finishband 24 in den Trennbereich 58 hinein umfasst die Trenneinrichtung 34 gemäß Figuren 5 bis 7 Führungselemente 126, 128, welche in einer Führungsebene wirksam sind, die senkrecht zu der Verlaufsrichtung des Finishbands 24 orientiert ist. Die Führungselemente 126, 128 definieren einen sich V-förmig verjüngenden Führungsraum (vgl. Figur 6).To simplify the feeding of finishing tape 24 into the separating region 58, the separating device 34 comprises according to FIG FIGS. 5 to 7 Guide elements 126, 128, which are effective in a guide plane, which is oriented perpendicular to the running direction of the finishing tape 24. The guide elements 126, 128 define a V-shaped tapered guide space (see. FIG. 6 ).

Im Übrigen wird hinsichtlich des Aufbaus und der Funktionsweise der Trenneinrichtung 34 gemäß Figuren 5 bis 7 auf die vorstehende Beschreibung zu Figuren 1 bis 4 Bezug genommen.Incidentally, with respect to the structure and operation of the separator 34 according to FIGS. 5 to 7 to the above description FIGS. 1 to 4 Referenced.

Claims (12)

  1. Belt finishing device (10), comprising a guiding device (28) for guiding a finishing belt (24), a rotational drive (14) for driving a workpiece (18) to be machine-finished in rotation about its workpiece axis (20), and an oscillating drive (16) by means of which the finishing belt (24) and the workpiece (18) can be driven oscillating relative to each other in a direction parallel to the workpiece axis (20), wherein a finishing belt store (26) is provided for the finishing belt (24), from which store the finishing belt (24) can be supplied to a working region (30) and from there to a collecting region (32), characterised in that a separating device (34) is arranged in the collecting region (32) for severing finishing belt portions and has at least one motor-driven separating element (50, 52).
  2. Belt finishing device (10) according to claim 1, characterised in that the separating device (34) has two separating elements (50, 52) in the form of cutting discs (54, 56) which cooperate in a cutting region (58).
  3. Belt finishing device (10) according to claim 2, characterised in that the cutting discs (54, 56) comprise a grooved cutter disc and a plate cutter disc.
  4. Belt finishing device (10) according to claim 2 or 3, characterised in that the cutting discs (54, 56) are each movably coupled to a friction element (91, 92) and that the friction elements (91, 92) stand in frictional engagement with each other in order to transmit a rotational movement of the cutting discs (54, 56).
  5. Belt finishing device (10) according to claim 4, characterised in that the friction elements (91, 92) are arranged adjacent to the cutting region (58) viewed in the running direction (68) of the finishing belt (24).
  6. Belt finishing device (10) according to claim 4 or 5, characterised in that the friction elements (91, 92) have friction surfaces (94, 96) which act as clamping faces for the finishing belt (24).
  7. Belt finishing device (10) according to any of the preceding claims, characterised in that a collecting container (112) is arranged in the collection region (32) for collecting severed finishing belt portions.
  8. Belt finishing device (10) according to any of the preceding claims, characterised in that a feed speed of the finishing belt (24) in a direction parallel to the workpiece axis (20) is at least approximately equal to a cutting speed of the separating device (34) lying across the width of the finishing belt (24).
  9. Belt finishing device (10) according to any of the preceding claims, characterised in that a feed device (44) is provided by means of which the separating device (34) can be moved in the direction parallel to the workpiece axis (20).
  10. Belt finishing device (10) according to any of the preceding claims, characterised in that a feed speed of the feed device (44) is at least approximately equal to a cutting speed of the separating device (34) lying across the width of the finishing belt (24).
  11. Belt finishing device (10) according to claim 9 or 10, characterised in that the feed device (44) comprises a stationary drive device or a drive device which is movable together with the separating device (34).
  12. Belt finishing device (10) according to claim 11, characterised in that a gear mechanism (98) is provided for translating a feed movement of the separating device (39) into a drive movement of the separating element (50, 52).
EP17714442.5A 2016-04-29 2017-03-30 Belt finishing device Active EP3294494B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016107965.0A DE102016107965A1 (en) 2016-04-29 2016-04-29 Belt finishing device
PCT/EP2017/057510 WO2017186446A1 (en) 2016-04-29 2017-03-30 Belt finishing device

Publications (3)

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EP3294494A1 EP3294494A1 (en) 2018-03-21
EP3294494B1 true EP3294494B1 (en) 2019-01-02
EP3294494B2 EP3294494B2 (en) 2021-03-10

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EP17714442.5A Active EP3294494B2 (en) 2016-04-29 2017-03-30 Belt finishing device

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EP (1) EP3294494B2 (en)
KR (1) KR102186634B1 (en)
CN (1) CN109153103B (en)
DE (1) DE102016107965A1 (en)
WO (1) WO2017186446A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018101339B4 (en) 2018-01-22 2024-02-08 Supfina Grieshaber Gmbh & Co. Kg Belt finishing device
CN110666710A (en) * 2019-09-25 2020-01-10 温州市强达表业有限公司 Wire drawing polisher for watch straps

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3927085A1 (en) 1989-08-17 1991-02-21 Krupp Maschinentechnik DEBURRING DEVICE FOR PLASTIC WORKPIECES
DE102014213194A1 (en) 2014-07-08 2016-01-28 Supfina Grieshaber Gmbh & Co. Kg Pressing device for pressing a Finisbands against a workpiece surface

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4478011A (en) * 1981-08-03 1984-10-23 Norton Co. Hand sander
WO1994027780A1 (en) * 1993-05-26 1994-12-08 Minnesota Mining And Manufacturing Company Method of providing a smooth surface on a substrate
SE509840C2 (en) * 1995-11-06 1999-03-15 Straalfors Ab Cutting device for cutting continuous webs
US6083091A (en) * 1998-10-19 2000-07-04 Jack W. Anderson Machine for continuously advancing sandpaper on a palm sander
DE102011081918A1 (en) * 2011-08-31 2013-02-28 Nagel Maschinen- Und Werkzeugfabrik Gmbh Finishing machine for finishing curved workpiece surfaces on workpieces

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3927085A1 (en) 1989-08-17 1991-02-21 Krupp Maschinentechnik DEBURRING DEVICE FOR PLASTIC WORKPIECES
DE102014213194A1 (en) 2014-07-08 2016-01-28 Supfina Grieshaber Gmbh & Co. Kg Pressing device for pressing a Finisbands against a workpiece surface

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KR102186634B1 (en) 2020-12-04
DE102016107965A1 (en) 2017-11-02
EP3294494A1 (en) 2018-03-21
CN109153103B (en) 2019-12-24
CN109153103A (en) 2019-01-04
WO2017186446A1 (en) 2017-11-02
EP3294494B2 (en) 2021-03-10
KR20190002445A (en) 2019-01-08

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