EP2674248A1 - Dispositif de finition - Google Patents

Dispositif de finition Download PDF

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Publication number
EP2674248A1
EP2674248A1 EP12172206.0A EP12172206A EP2674248A1 EP 2674248 A1 EP2674248 A1 EP 2674248A1 EP 12172206 A EP12172206 A EP 12172206A EP 2674248 A1 EP2674248 A1 EP 2674248A1
Authority
EP
European Patent Office
Prior art keywords
finishing
pressing
guide
elements
adjusting
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
EP12172206.0A
Other languages
German (de)
English (en)
Other versions
EP2674248B1 (fr
Inventor
Rainer Waltersbacher
Oliver Hildebrandt
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 EP20120172206 priority Critical patent/EP2674248B1/fr
Publication of EP2674248A1 publication Critical patent/EP2674248A1/fr
Application granted granted Critical
Publication of EP2674248B1 publication Critical patent/EP2674248B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/36—Single-purpose machines or devices
    • B24B5/42—Single-purpose machines or devices for grinding crankshafts or crankpins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
    • B24B19/12—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding cams or camshafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
    • B24B21/004—Machines or devices using grinding or polishing belts; Accessories therefor using abrasive rolled strips

Definitions

  • the invention relates to a finishing device, comprising a pressing device with a curved pressing surface, along which a finishing belt between a finishing tape insertion end and a finishing belt performer can be pressed against a finish to be machined workpiece.
  • a finishing belt is pressed against a surface section to be machined, so that an abrasive layer of the finishing belt works finishing on a workpiece surface.
  • Particularly good surface qualities are achieved, making the finishing process particularly suitable for machining main bearings and connecting rod bearings of a crankshaft.
  • the finishing method has the further advantage that it can be used for a large number of different shapes and sizes of workpiece surfaces.
  • the disadvantage here that depending on the shape and size of a workpiece surface to be machined in each case this form and size specially adapted pressure devices must be kept, which must also have only very low tolerances and are correspondingly expensive to manufacture.
  • the conversion effort when replacing a pressing device can be relatively high.
  • the object of the present invention is to provide a finishing device which makes it possible to reduce the number of pressing devices to be provided for different workpieces.
  • the pressing device has a first pressing element with a first Andschreib Structureabêt and a second pressing element with a second Andschreibcolourabrough, and that an adjusting device is provided for adjusting a distance of the pressing elements in a width direction of the finishing strip.
  • the pressing surface has at least two pressing surface sections which can be moved relative to one another.
  • the Andschreib vomabitese are each by different pressure elements whose Distance in a width direction of the finishing tape is adjustable by means of an adjusting formed.
  • the width direction of the finish tape is a direction transverse to the running direction of the finish tape, in particular, a direction perpendicular to the running direction of the finish tape.
  • the adjustability of the spacing of the pressing elements also has the advantage that a fine adjustment of a working width with which the finishing strip is pressed against this workpiece surface can take place for a specific workpiece surface having a certain surface width. In this way, in a manufacturing environment, it is possible to react very flexibly to problems that might occur which were not yet foreseeable in the design phase of the workpiece to be machined and / or the pressing device intended for such a workpiece.
  • the pressing device advantageously comprises exactly two (that is to say only two, not more than two) pressing elements each having a pressing surface section.
  • the pressing device comprises at least three (that is three or more than three) pressing elements each having a Andschreib vomabites.
  • at least two (that is, only two or more or all) of the at least three pressing elements are movable relative to each other.
  • a finishing belt is not pressed along the entire width against a workpiece surface.
  • the Andschreibviddusabitese overlap in a direction of the finish strip at least partially, so that the finishing belt is supported along its entire width and pressed against the workpiece surface.
  • mutually facing boundaries of the pressing surface sections extend in a direction which is inclined to a running direction of the finishing tape.
  • an angle of inclination of the facing boundaries relative to the running direction of the finishing tape is between about 10 ° and 90 °, preferably between about 20 ° and 70 °.
  • At least one pressing surface section preferably both pressing surface sections, extend or extend between the finishing tape insertion end and the finishing tape executor.
  • the position of only one of the pressing elements is adjustable by means of the adjusting device.
  • one may be mounted on a first, stationary pressing an adjusting device which cooperates by means of an adjusting element with the second pressing element and moves it upon movement of the adjusting element in a corresponding manner, so that a total adjustment of the relative position between the pressing elements and thus the distance of the pressing elements in Width direction of the finishing tape is made possible.
  • the positions of both pressing elements can be changed by means of the adjusting device. This makes it possible to provide a stationary adjusting device, which simultaneously acts on both pressing elements and, viewed in the width direction of the finishing strip, moves them toward or away from each other.
  • a guide means be provided for guiding the pressing members in the width direction of the finishing tape. This makes it possible to provide a guide of the pressing elements separately by means of a guide device, without this function (which is also conceivable) being provided simultaneously by the adjusting device.
  • a movable adjusting element is provided, which cooperates via first operative portions with associated second active portions of the pressing elements. This allows a particularly simple motion coupling of a Adjustment device, which cooperates with at least two pressing elements.
  • the first active sections or the second active sections are designed as sliding blocks and that the second active sections or the first active sections are formed as slotted guides for guiding the sliding blocks.
  • This allows a particularly torsionally rigid translation of the movement of the adjusting element in a movement of the pressing elements.
  • a translation has the advantage of a relatively fast adjustability of the distance of the pressing elements.
  • a reduction has the advantage of a particularly good Feinjustageberichtkeit the distance of the pressing elements.
  • the adjustment can also be realized with other components.
  • eccentrics, wedges, threads, rack drives or other adjusting drives can be used.
  • the adjusting device may have a self-locking, so that it is possible that the adjusting device simultaneously forms a bearing device for supporting the pressing elements.
  • a pressure element holder is provided for holding the pressure elements and if a fastening device is provided for releasably securing the pressure elements to the pressure element holder.
  • the attachment device may be, for example to act a clamping or clamping device.
  • finishing device has a known swivel arm, by means of which the pressing device is pivotable in the direction of a workpiece and opposite thereto, it is preferred if the Andrückelementhalter connected by means of a resilient connection means with this swivel arm and / or with a carrier connected to the pivot arm is.
  • This mounting of the pressure element holder has the advantage that a compensation of at least smaller position tolerances between the workpiece and the pressure surface is made possible. This is particularly advantageous in view of the adjustability of the invention resulting width of the pressure surface.
  • the guide means comprises a first guide member having a first guide surface portion and a second guide member having a second guide surface portion and when an adjusting means for adjusting a distance of the guide elements in the width direction of the finishing tape is provided.
  • the adjusting device for adjusting the spacing of the guide elements can be provided in the form of a second adjusting device.
  • the first pressure element and the first guide element are immovably connected to each other when the second pressure element and the second guide member are immovably connected to each other and if a common adjustment is provided to adjust the distance of the pressing of our setting the distance of the guide elements.
  • this adjustment device may have a construction already explained above with reference to the adjustment device for setting the spacing of the pressure elements.
  • the finishing device 10 comprises a first pivot arm 12, which is pivotable about a first pivot axis 14.
  • a pivot drive 16 is provided for pivoting the pivot arm 12 about the pivot axis 14.
  • the finishing device 10 has a second pivot arm 18, which is pivotable about a second pivot axis 20.
  • the pivot arms 12 and 18 are coupled in motion by means of an intermediate gear 22, for example in the form of a coupling member, so that a pivoting movement of the first pivot arm in a certain pivoting direction about the pivot axis 14 in a pivoting movement of the pivot arm of the second pivot arm 18 about the second pivot axis 20 is transmitted.
  • the pivot arms 12 and 18 each serve to arrange a pressure device 24 described in detail below.
  • pivot arms 12 and 18 also serve for fastening a finishing band guide 26 for guiding a finishing belt 28, respectively.
  • the finishing belt 28 is fed by means of a first guide device 26 to a first pressing device 24, deflected in the region of a deflection device 29 arranged, for example, on the pivoting arms 12 and / or 18, and from there fed to a second pressing device 24 and finally to a second finishing belt guide 26.
  • the first pressing means 24 and the second pressing means 24 are identical to each other, so that a high number of identical parts can be used.
  • FIG. 2 the arranged on the second pivot arm 18 Andrück pain 24 is shown in perspective.
  • the pressing device 24 has a carrier 30 for rigid connection with the swivel arm 18.
  • a pressure element holder 32 is mounted in particular elastically.
  • the pressing element holder 32 serves to hold a first pressing element 34 and a second pressing element 36.
  • the pressing element 34 has a first, curved pressing surface section 38.
  • the second pressing element has a second, curved pressing surface section 40.
  • the Andschreibdonabête 38 and 40 together form a curved pressing surface 42nd
  • Both press surface portions 38 and 40 extend between a finish tape inserter 44 and a finish belt performer 46.
  • roll-shaped wear elements 48, 50 are provided on which the back side of a finishing tape (not shown) slides.
  • Each of the pressing elements 34, 36 has in each case a short wear element 48 and a long wear element 50.
  • a course of the finishing tape is in FIG. 2 shown schematically and designated by the reference numeral 52.
  • a first guide means 54 In the direction 52 upstream of the finishing tape insertion end 44 is a first guide means 54 and in the direction 52 after the finishing belt-Ausquestde 46 is a second guide means 56 for guiding the finishing tape 28 is provided.
  • the guide devices 54, 56 are each in two parts and each have a first guide element 58 and a second guide element 60.
  • the first guide element 58 has a particularly curved first guide surface section 62, which in particular faces the second guide element 60.
  • the second guide element 60 has a second guide surface section 64, which is in particular curved and in particular faces the first guide element 58.
  • the first guide elements 58 of a guide device 54, 56 are each by means of a holder 68 with the first Pressing element 34 connected.
  • the second guide elements 60 are each connected to the second pressure element 36 by means of a holder 70.
  • the distance of the pressing elements 34 and 36 is adjustable in a direction indicated by the reference numeral 72 width direction of the finishing tape 28, which extends transversely, in particular perpendicular, to the running direction 52 of the finishing tape 28.
  • FIG. 2 a relative position of the pressing elements 34 and 36 is shown, in which the pressing elements 34 and 36 have a smallest possible distance of "zero".
  • the pressing elements 34 and 36 abut each other and form with their Andschreibdonabismeen 38 and 40, a closed pressing surface 42nd
  • the distance between the pressing elements 34 and 36 in the width direction 72 of the finishing belt 28 is adjustable.
  • FIG. 3 shows a relative position of the pressing members 34 and 36, wherein the pressing members 34 and 36 are not abutting each other, but are relatively spaced so that between the Andschreibdonabitesen 38 and 40, a gap 73 is present, which seen the guide surface 42 in the width direction 72 of the finishing belt 28 interrupts.
  • the gap 73 preferably extends between the finish tape inserter 44 and the finish belt performer 46.
  • a boundary of the first pressing element 34 facing the second pressing surface section 40 of the second pressing element 36 is designated by the reference numeral 74.
  • a boundary of the second pressing surface section 40 facing the first pressing surface section 38 of the first pressing element 34 is designated by the reference numeral 76.
  • the boundaries 74, 76 are complementary to each other, so that in a position in which the Andschreibinciabitese 38 and 40 have a smallest possible distance from each other, abut each other and no gap 73 between the pressing elements 34 and 36 is formed. In this relative position of the pressing elements 38 and 40, a continuous pressing surface 42 is formed with a first guide width 78 measured parallel to the width direction 72.
  • the boundaries 74 and 76 have a measured relative to the direction 52 of the finishing belt 28 angle of inclination 81.
  • This inclination angle 81 is adjusted to the dimensions of the Andschreibdonabête 38 and 40 so small that the Andschreibdonabête 38 and 40 of both Andschreibiata 34 and 36 respectively between the finishing tape insertion end 44 and the finishing tape-Ausendde 46 extend.
  • the inclination angle 81 is so large that a between the finishing tape insertion end 44 and the finishing belt performer 46 arranged portion of a finishing tape 28 along the entire guide width 80 is pressed against a workpiece to be machined. This means that the Andschreibdonabbalde 38 and 40 overlap seen in the direction 52 of the finishing belt 28 at least partially.
  • the pressing elements 34 and 36 are each connected to guide elements 58, 60 of a guide device 54, 56, there is a minimum guide width 82 (see FIG. 6 ), which corresponds to the minimum distance of the guide surface portions 62 and 64, then on, although the Andrückbreite 78 (see FIG. 4 ) is minimal.
  • FIGS. 8 and 9 is the pressing device 24 according to section VIII (see FIG. 1 ), each with the in FIGS. 4 and 5 shown relative positions of the pressing elements 34 and 36, wherein additionally shown in dashed lines parts of an adjusting device 86 described below, by means of which the distance of the pressing elements 34 and 36 in the width direction 72 is adjustable.
  • the adjusting device 86 comprises an assembly 90 which can be moved along a setting axis 88 (see FIG Figures 10 and 11 ).
  • the assembly 90 comprises an adjusting element 92, which first operative portions 94 (see FIG FIGS. 14 and 15 ), which are formed in particular in the form of sliding blocks 96.
  • the first active sections 94 of the adjusting element 96 cooperate with second active sections 98 of the pressing elements 34 and 36 (see FIG FIGS. 14 and 15 ).
  • the second active sections are designed in particular in the form of slotted guides 100, in which the sliding blocks 96 of the first active sections 94 are displaceably guided and preferably at least largely free of play.
  • the first active portions 96 of the adjusting member 92 have a fixed distance relative to each other. For this reason, a displacement of the adjusting member 92 from the in FIG. 10 illustrated situation (compare also FIG. 14 ) in the in FIG. 11 shown situation (compare also FIG. 15 ) associated with the fact that the distance between the pressing elements 34 and 36 changed (see FIGS. 12 and 13 such as FIGS. 14 and 15 ).
  • the ratio of the movement of the adjustment member 92 along the adjustment axis 88 relative to a change in the spacing of the pressure members 34 and 36 may be affected by the choice of the inclination of the slide guides 100 relative to the adjustment axis 88.
  • relatively low inclination of the slotted guides 100 relative to the adjustment axis 88 allow a particularly good fine adjustment of the relative position of the pressing elements 34 and 36th
  • the assembly 90 cooperates via a pair of threads 102 with an actuating element 104.
  • the actuator 104 has an actuating portion 106 (for example, a hexagon surface) for engaging a hand-operated or motor-operated tool.
  • the actuating element 104 comprises a bearing 108, by means of which the actuating element 104 is rotatably mounted on the Andrückelementhalter 32.
  • a rotation of the actuating element 104 is accompanied by a displacement of the assembly 90 along the adjustment axis 88 without the position of the actuating element 104 changing along the adjustment axis 88.
  • the assembly 90 is provided with a reference element 110 (cf. Figures 2 and 3 ) connected.
  • the reference member 110 moves along the adjustment axis 88 parallel to a display scale 112, which is connected to the Andschreibelementhalter 32 upon movement of the assembly 90.
  • the guide device 114 comprises a plurality of guide pins 116, which are arranged in particular approximately at the level of the finishing tape insertion end 44 and / or approximately at the level of the finishing tape-Ausachedes 46 of the pressing members 34, 36.
  • the fixing of the guide pins takes place in each case to that pressing element 34, 36, which has a narrower width in the fixing region, so that the non-fixed part of the guide pin with a maximum guide path for guiding the respective other pressing element is available.
  • the adjusting device 86 and / or the guide device 114 are self-locking, so that a fastening device described below for fastening the pressing elements 34, 36 to the Andrückelementhalter 32 is not required.
  • a fastening device designated in the following generally by the reference numeral 118, is provided.
  • the fastening device 118 advantageously comprises two clamping elements 120, 122, by means of which the pressing elements 34, 36 can be clamped in a space extending parallel to the course direction 52 of the finishing strip 28.
  • the clamping elements 120, 122 are each braced via a screw 124, 126 with the Andschreibelementhalter 32.
  • At least one of the clamping elements 120, 122 has a wedge surface 128, which cooperates with a corresponding wedge surface of a wedge element 130, which is movable as part of a screw connection 124 and / or 126 in the direction of the carrier 30.
  • the pressing elements 34, 36 are pressed against a contact surface 132 of the Andrückelementhalters 32 and at the same time clamped in a direction parallel to the contact surface 132 direction between the clamping elements 120 and 122.
  • the fastening device 118 is loosened by loosening the threaded connections 124, 126, so that the pressing elements 34, 36 parallel to the contact surface 132 and can be moved transversely to the course direction 52 of the finishing belt and in their distance by means of the adjusting device 86 are adjustable.
  • the pressing elements 34, 36 can be fixed again by actuating the screw connections 124, 126.
  • the connecting device 134 comprises a relative to the pressing surface 42 approximately centrally arranged connecting screw 136 which is mounted for example on the Andschreibelementhalter 32 and bolted to the carrier 30.
  • a clamping portion 138 of the Andschreibelementhalters 32 between spring washers 140 or a package of spring washers 140 and a spherical cap 142 is clamped.
  • the spherical cap 142 interacts with a ball socket 144 mounted on the carrier 30.
  • the pressure element holder 32 is laterally clamped between leaf springs 146 (see FIG FIG. 2 ).
  • the leaf springs 146 are fixed in particular to the carrier 30.
  • the connecting device 134 further comprises elastic shock absorbers 148, which are formed for example in the form of elastomeric buffers.
  • the shock absorbers 148 are arranged spaced relative to the central bearing.
  • a further improved connection between the support 30 and the pressure element holder 32 results when the resilient support means 150 arranged as far as possible and acting between the support 30 and the pressure element holder 32 are provided.
  • These include, for example, springs 152, which are respectively fixed between stops 154, 156.
  • one of the stops 154, 156 is connected to one of the carrier 30 or pressing element holder 32.
  • the stops 154 and 156 may be formed, for example in the form of screws whose shaft are encompassed by a respective free end 158 of the spring 152.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP20120172206 2012-06-15 2012-06-15 Dispositif de finition Not-in-force EP2674248B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20120172206 EP2674248B1 (fr) 2012-06-15 2012-06-15 Dispositif de finition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120172206 EP2674248B1 (fr) 2012-06-15 2012-06-15 Dispositif de finition

Publications (2)

Publication Number Publication Date
EP2674248A1 true EP2674248A1 (fr) 2013-12-18
EP2674248B1 EP2674248B1 (fr) 2014-09-17

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EP20120172206 Not-in-force EP2674248B1 (fr) 2012-06-15 2012-06-15 Dispositif de finition

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015169484A1 (fr) * 2014-05-05 2015-11-12 Supfina Grieshaber Gmbh & Co. Kg Dispositif de finition à bande et procédé permettant de faire fonctionner un dispositif de finition à bande
WO2019115323A1 (fr) * 2017-12-14 2019-06-20 Thielenhaus Technologies Gmbh Sabot de pressage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5311704A (en) * 1992-05-20 1994-05-17 Barton Ii Kenneth A Method and apparatus for correcting diametrical taper on a workpiece
US5437125A (en) * 1992-03-16 1995-08-01 Barton, Ii; Kenneth A. Surface polishing assembly
EP0882549A1 (fr) * 1997-06-06 1998-12-09 Societe Des Procedes Machines Speciales Machine d'usinage par bande abrasive de portées cylindriques d'arbres
US20010041523A1 (en) * 2000-05-04 2001-11-15 Societe Des Procedes Et Machines Speciales Machine for grinding cylindrical bearing surfaces on parts using an abrasive belt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5437125A (en) * 1992-03-16 1995-08-01 Barton, Ii; Kenneth A. Surface polishing assembly
US5311704A (en) * 1992-05-20 1994-05-17 Barton Ii Kenneth A Method and apparatus for correcting diametrical taper on a workpiece
EP0882549A1 (fr) * 1997-06-06 1998-12-09 Societe Des Procedes Machines Speciales Machine d'usinage par bande abrasive de portées cylindriques d'arbres
US20010041523A1 (en) * 2000-05-04 2001-11-15 Societe Des Procedes Et Machines Speciales Machine for grinding cylindrical bearing surfaces on parts using an abrasive belt

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015169484A1 (fr) * 2014-05-05 2015-11-12 Supfina Grieshaber Gmbh & Co. Kg Dispositif de finition à bande et procédé permettant de faire fonctionner un dispositif de finition à bande
GB2539611A (en) * 2014-05-05 2016-12-21 Supfina Grieshaber Gmbh & Co Kg Belt-finishing device and method for operating a belt-finishing device
GB2539611B (en) * 2014-05-05 2017-04-26 Supfina Grieshaber Gmbh & Co Kg Belt-finishing device and method for operating a belt-finishing device
US9802291B2 (en) 2014-05-05 2017-10-31 Supfina Grieshaber Gmbh & Co. Kg Belt-finishing device and method for operating a belt-finishing device
WO2019115323A1 (fr) * 2017-12-14 2019-06-20 Thielenhaus Technologies Gmbh Sabot de pressage

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