EP2928644B1 - Finishvorrichtung und verfahren zur bearbeitung von wellenaxiallagern - Google Patents

Finishvorrichtung und verfahren zur bearbeitung von wellenaxiallagern Download PDF

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Publication number
EP2928644B1
EP2928644B1 EP14706034.7A EP14706034A EP2928644B1 EP 2928644 B1 EP2928644 B1 EP 2928644B1 EP 14706034 A EP14706034 A EP 14706034A EP 2928644 B1 EP2928644 B1 EP 2928644B1
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EP
European Patent Office
Prior art keywords
machining
finishing
finishing apparatus
bearing surface
unit
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.)
Active
Application number
EP14706034.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2928644A1 (de
Inventor
Martin Seger
Dieter LAUBLE
Jürgen HEIZMANN
Bernd DEGNER
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
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Publication date
Application filed by Supfina Grieshaber GmbH and Co KG filed Critical Supfina Grieshaber GmbH and Co KG
Publication of EP2928644A1 publication Critical patent/EP2928644A1/de
Application granted granted Critical
Publication of EP2928644B1 publication Critical patent/EP2928644B1/de
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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
    • B24B35/00—Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency
    • 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
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces

Definitions

  • the invention relates to a finishing device for machining shaft bearings, in particular crankshaft bearings, comprising a holder which can be arranged or arranged on a machine frame, on which a processing unit is movably mounted with a finishing tool, wherein a movement of the processing unit with an adjustment of a diameter to be machined by means of the finishing tool associated with a Wellenaxiallagers.
  • finishing devices are used for example for machining crankshaft journal bearings. These bearings have mutually facing thrust bearing surfaces, which are radially inwardly adjacent to a peripheral surface of a crankshaft main bearing. To adapt at least to the inner diameter of the thrust bearing surfaces, it is necessary to adjust the position of the finishing tool so that the finishing tool does not fall below this minimum diameter. For this purpose, the processing unit must be brought with the finishing tool in a corresponding relative position to the workpiece to be machined.
  • the present invention has the object to provide an apparatus and a method with which the processing of Wellenaxiallagern is simplified across different sizes over batch sizes.
  • a motor drive unit which drives the processing unit along a feed axis.
  • the finishing device allows a precise Delivery of the processing unit and the finishing tool relative to a workpiece to be machined. In this way, the effort to set up a new lot size can be significantly reduced.
  • a further reduction of secondary sides is made possible by the fact that a control device is provided for controlling the drive unit. This allows the specification of target positions, which can be specified depending on the geometry of a workpiece to be machined.
  • a sensor device for detecting the position of the processing unit along the feed axis. This allows a comparison between a target position and an actual position of the processing unit and thus a target position and an actual position of a finishing tool relative to a workpiece to be machined.
  • the sensor device comprises a first sensor part, which is arranged on the holder, and a second sensor part, which is arranged on the processing unit, wherein the sensor device detects the relative position of the two sensor parts. This allows the detection of the position of the processing unit relative to the holder, regardless of the geometry of a workpiece to be machined.
  • the sensor device comprises a distance sensor for detecting a distance between the processing unit and a reference surface of the workpiece to be machined, in particular the circumferential bearing surface of a main bearing of a crankshaft. This allows a precise positioning of the processing unit relative to a workpiece to be machined.
  • the sensor device comprises a measuring device for measuring an operating variable of the drive unit.
  • a variable required for operating the drive unit can be detected, which corresponds to the energy requirement of the drive unit. That's the way it is possible to detect a "driving" of the processing unit on the workpiece to be machined;
  • Such a "start-up" is accompanied by an increase in the energy requirement of the drive unit, for example with an increase in the current in an electric drive unit or with an increase in the pressure of an operating medium of a pneumatic or hydraulic drive unit.
  • the finishing device comprises a regulating device for regulating the position of the processing unit along the feed axis. This allows a simple comparison of target positions and actual position of the processing unit.
  • the finishing device comprises an oscillating drive, by means of which the processing unit can be driven in an oscillating manner in an angle to the feed axis, in particular a vertical direction.
  • the processing unit can be driven in an oscillating manner in an angle to the feed axis, in particular a vertical direction.
  • the finishing tool is advantageously a finishing belt.
  • Such a finishing belt is preferably guided in such a way that it has a first active surface section in the region of two mutually facing axial bearing surfaces, which faces a first axial bearing surface and has a second active surface section which faces a second axial bearing surface.
  • the finishing device comprises two processing units, each having a finishing tool, wherein the two finishing tools for processing circumferentially offset from each other surface portions of the same shaft thrust bearing are formed. In this way, within a Maschinen Swisseintim a material removal rate can be doubled.
  • two processing units are independently movable. As a result, further degrees of freedom for machining thrust bearing surfaces are created.
  • two processing units are movably mounted on the same holder, whereby a relative positioning of two processing units is simplified.
  • a separate drive unit for driving along a separate feed axis is provided for each of the processing units. This allows maximum flexibility for machining varying thrust bearing surface diameters.
  • a separate sensor device for detecting the respective positions along the feed axis is provided for each of the processing units. This allows a simple comparison of different target and actual positions of different machining units.
  • the above-mentioned object is achieved in a method for machining Wellenaxiallagern, in particular of crankshaft journal bearings, according to the invention by using a finishing device described above, the processing unit is moved by means of the drive unit along the feed axis, during machining of the shaft thrust bearing by means of the finishing tool ,
  • the above method makes it possible to machine thrust bearing surfaces whose ring width is greater than the radially effective width of the finishing tool, which is determined for example by the width of the finishing tape. Moreover, it is advantageous that a compensation of varying in the radial direction cutting speeds is possible; The finishing tool can therefore be longer, for example, in a radially further inward position stay as in a radially outward position in which higher cutting speeds occur during rotation of the workpiece to be machined.
  • the finishing tool is moved back and forth in the radial direction of the axial bearing surface to be machined, for example in order to achieve a desired desired geometry and / or to produce an axial bearing surface with a cross-cut structure.
  • FIGS. 1 and 2 An embodiment of a finishing device is in the FIGS. 1 and 2 shown from different perspectives and generally designated by the reference numeral 10.
  • the finishing devices 10 are used for finish machining of axial bearing surfaces of a workpiece 12, which is designed in particular as a crankshaft.
  • the workpiece 12 has a shaft axis 14. During the machining of the workpiece 12, this is driven by means of a schematically represent rotary drive 16, so that the workpiece 12 rotates about the workpiece axis 14.
  • the workpiece 12 has at least one, preferably two axial bearing surfaces 18, 20 to be machined.
  • the thrust bearing surfaces 18 and 20 together form a crankshaft journal bearing which, when installed in an internal combustion engine, serves for the axial bearing of the crankshaft.
  • the finishing device 10 is arranged on a known machine frame 22, which is therefore not shown. It is possible that the finishing device 10 is fixedly connected to the machine frame 22 or by means of a known and shown schematically Oscillation drive 24 along an oscillation axis 26 is driven to oscillate.
  • the oscillation axis 26 preferably runs perpendicular to the workpiece axis 14.
  • the finishing device 10 comprises a holder designated overall by the reference numeral 28.
  • the holder 28 includes a horizontal plate 30 which is fixedly connected to a vertical plate 32.
  • the holder 28 further comprises a horizontal holding portion 34 for arrangement with respect to the holder 28 stationary first sensor parts 36 and 38, which are each part of a sensor device 40 and 41, respectively.
  • the finishing device 10 comprises an upper processing unit 42 and a lower processing unit 44.
  • the upper processing unit 42 serves to guide a first finishing belt 46, which is guided on the upper processing unit 42 in such a way that it engages with the workpiece 12 with a first operative portion 48 with the thrust bearing surface 20 and with a second operative portion 50 with the thrust bearing surface 18 is engaged.
  • the second finishing belt 56 is guided on the lower processing unit 44.
  • the first finishing belt 46 has a vertically measured distance 58 from the workpiece axis 14.
  • the second finishing belt 56 has a distance 60 measured in the vertical direction to the workpiece axis 14. It is possible that the distances 58 and 60 are set identically, so that the active surfaces 48 and 52 and the active surfaces 50 and 54, the thrust bearing surfaces 18 and 20 in an identical radius region, which corresponds to the width of the finishing tapes 46 and 56 processed. However, it is also conceivable to set the distances 58 and 60 different from each other.
  • the finishing device 10 comprises drive units described below.
  • a first drive unit 62 is the upper processing unit 42 assigned.
  • a second processing unit 64 is assigned to the lower processing unit 44.
  • the drive units 62 and 64 each include a drive housing 66, 68 and drive elements 70 and 72 movable relative to the drive housings 66, 68, respectively.
  • the drive elements 70, 72 are each movable along vertical feed axes 74, 76.
  • the free ends of the drive elements 70 and 72 are each connected via a hinge eye 78 and 80 with the vertical plate 32 of the holder 28.
  • the drive housings 66 and 68 of the drive units 62 and 64 are connected to one of the processing units 42 and 44, respectively.
  • the drive housing 66 of the drive unit 62 is connected to a vertical plate 84 of the upper processing unit 42 by means of a connecting element 82 extending substantially parallel to the drive element 70.
  • the vertical plate 84 merges into an arm 86 of the upper processing unit 42 or is fixedly connected to the arm 86.
  • the drive housing 68 of the drive unit 64 is connected via a connecting element 88 to a vertical plate 90 of the lower processing unit 44.
  • the vertical plate 90 merges into an arm 92 of the lower processing unit 44 or is connected to the arm 92.
  • second sensor parts 94, 96 are provided whose position varies depending on the position of the processing units 42, 44 relative to the first sensor parts 36, 38.
  • a control unit 98 is provided for controlling the drive units 62, 64.
  • the drive units 62, 64 set position of the upper processing unit or the lower processing unit 44 along the respective feed axes 74, 76 can be specified.
  • the actual positions of the processing units 42, 44 along the feed axes 74, 76 can be detected with the sensor devices 40, 41.
  • the drive unit 62 of the upper processing unit 42 is driven so that the drive member 70 is moved out of the drive housing 66.
  • the drive housing 66 is raised relative to the drive element 70, and the upper processing unit 42 is also raised via the connecting element 82 and the vertical plate 84.
  • the lower processing unit 44 is moved downward by the drive element 72 is further moved into the drive housing 68 of the second drive unit 64.
  • the drive housing 68 of the second drive unit 64 is moved downward and this movement is transmitted via the connecting element 88 to the vertical plate 90 and to the lower processing unit 44.
  • the drive units 62 and 64 are arranged within a vertical plane which runs perpendicular to the workpiece axis 14. This makes it possible to create a finishing device 10 which is very narrow overall, whereby a plurality of finishing devices 10 can be arranged next to each other in a small space. This leaves laterally adjacent to the finishing device 10 space for other machine tool parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
EP14706034.7A 2014-02-21 2014-02-21 Finishvorrichtung und verfahren zur bearbeitung von wellenaxiallagern Active EP2928644B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/053455 WO2015124204A1 (de) 2014-02-21 2014-02-21 Finishvorrichtung und verfahren zur bearbeitung von wellenaxiallagern

Publications (2)

Publication Number Publication Date
EP2928644A1 EP2928644A1 (de) 2015-10-14
EP2928644B1 true EP2928644B1 (de) 2016-04-13

Family

ID=50156769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14706034.7A Active EP2928644B1 (de) 2014-02-21 2014-02-21 Finishvorrichtung und verfahren zur bearbeitung von wellenaxiallagern

Country Status (3)

Country Link
EP (1) EP2928644B1 (zh)
CN (1) CN105829021B (zh)
WO (1) WO2015124204A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9987717B2 (en) 2016-02-24 2018-06-05 Supfina Grieshaber Gmbh & Co. Kg Finishing device
CN116690363B (zh) * 2023-05-26 2024-01-05 杭州顺豪金属制品有限公司 表壳端口自动磨口机及其加工方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19714677C5 (de) * 1997-04-09 2010-12-02 Boehringer Werkzeugmaschinen Gmbh Verfahren zur verwendungsfähigen Fertigbearbeitung von Rotationsteilen, insbesondere der Lagerstellen von Kurbelwellen
CN2287070Y (zh) * 1997-06-19 1998-08-05 上海浦东汉华科技工程公司 一种曲轴轴颈修磨装置
WO2001071171A2 (en) * 2000-03-21 2001-09-27 General Electric Company In place superfinishing of crankshaft thrust bearing faces
DE10144644B4 (de) * 2001-09-11 2006-07-13 Bsh Holice A.S. Verfahren und Vorrichtung zum Schleifen von zentrischen Lagerstellen von Kurbelwellen
CN200957519Y (zh) * 2006-09-28 2007-10-10 刘学贵 数控曲轴磨床砂轮圆弧修整器
DE102011087252B3 (de) * 2011-11-28 2013-01-17 Supfina Grieshaber Gmbh & Co. Kg Vorrichtung zur Finishbearbeitung eines insbesondere ringförmigen Werkstücks
EP2617522B1 (de) * 2012-01-23 2014-01-15 Supfina Grieshaber GmbH & Co. KG Vorrichtung zur Feinbearbeitung einer bezogen auf eine Werkstückachse eines Werkstücks exzentrisch angeordneten Werkstückumfangsfläche
EP2676770B1 (de) * 2012-06-18 2014-06-11 Supfina Grieshaber GmbH & Co. KG Vorrichtung zur Fein- oder Feinstbearbeitung einer rotationssymmetrischen Werkstückfläche eines Werkstücks

Also Published As

Publication number Publication date
WO2015124204A1 (de) 2015-08-27
EP2928644A1 (de) 2015-10-14
CN105829021A (zh) 2016-08-03
CN105829021B (zh) 2018-06-01

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