EP1427568B1 - Procede et dispositif pour polir des points d'appui centraux de vilebrequins - Google Patents

Procede et dispositif pour polir des points d'appui centraux de vilebrequins Download PDF

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Publication number
EP1427568B1
EP1427568B1 EP02777056A EP02777056A EP1427568B1 EP 1427568 B1 EP1427568 B1 EP 1427568B1 EP 02777056 A EP02777056 A EP 02777056A EP 02777056 A EP02777056 A EP 02777056A EP 1427568 B1 EP1427568 B1 EP 1427568B1
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EP
European Patent Office
Prior art keywords
grinding
crankshaft
bearing
bearings
center
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.)
Expired - Fee Related
Application number
EP02777056A
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German (de)
English (en)
Other versions
EP1427568A1 (fr
Inventor
Erwin Junker
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.)
BSH Holice AS
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Erwin Junker Maschinenfabrik GmbH
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 Erwin Junker Maschinenfabrik GmbH filed Critical Erwin Junker Maschinenfabrik GmbH
Publication of EP1427568A1 publication Critical patent/EP1427568A1/fr
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Publication of EP1427568B1 publication Critical patent/EP1427568B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/04—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces externally
    • 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
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B24B41/065—Steady rests
    • 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
    • B24B5/421—Supports therefor

Definitions

  • the present invention relates to a device and a procedure for grinding centric bearings of crankshafts (see, for example, FR-A-1 487 669).
  • the centric bearing points for example, by means of individual grinding wheels be finished, but with a significantly higher grinding time goes hand in hand, since each main warehouse is processed individually.
  • the method most widely used in terms of mass production concerns the so-called multi-bearing grinding, in which several grinding wheels of a grinding spindle simultaneously engaged with the crankshaft at said locations of the respective Main camp come.
  • the machines used for this purpose are Well known and have such a structure that on a machine bed a feed unit by means of a grinding spindle and a dressing device is constructed.
  • the dressing device is preferably linear in direction delivered to an axis transverse to the main axis or center axis of the Rotation of the crankshaft runs.
  • a sanding table In the front area of such a grinding machine is arranged a sanding table, which either fixed on the machine bed is constructed or by means of a CNC axis in the direction of an axis which is transverse to Zustellachse and parallel to the axis of rotation runs, can be moved.
  • This grinding table is made up of a workpiece headstock and a tailstock. wherein the workpiece headstock includes the workpiece spindle.
  • the workpiece spindle is known to be the inclusion of a chuck or a Driver for the crankshaft.
  • the tailstock is also on the grinding table constructed and manually to adjust different lengths of the crankshaft displaceable.
  • a tailstock quill can be used to load and unload the crankshaft automatically advanced and retracted, as is conventional Cylindrical grinding machines is well known.
  • crankshaft For the clamping of the crankshaft, which is done on the headstock side, are offered the possibilities of either a floating entrainment system or of centrically exciting chucks.
  • a motor By means of a motor, the workpiece headstock and thus the crankshaft rotated.
  • the tailstock quill is provided with a corresponding counter-tip, which is generally referred to as so-called. standing tip is executed.
  • Between the workpiece headstock and the Tailstock is then inserted between the respective tips of the crankshaft their centers, thereby ensuring that the central axes the workpiece spindle on the one hand and the tailstock quill on the other hand with the central Axis or rotation axis of the crankshaft is exactly aligned.
  • the workpiece is during the grinding by means of two measuring devices automatically in real time and measured Corrected the machine accordingly.
  • the lateral undercuts have, i. No plan pages are ground here.
  • main bearings with lateral radius transitions to this plan side and the plan side of this main bearing with a height of about 4 to 5 mm mitschleleifen.
  • CBN grinding wheels in appearance since With them increased metal removal services must be driven, in general to make the grinding process economical. This is not only in the required cycle time, which should be achieved desirably, but also in the properties of the CBN grinding wheel itself.
  • CBN grinding wheels preferably those which are ceramically bonded and have a lining height of about 5 mm, on the one hand have the advantage that with them On the other hand, however, an increased cutting volume can be driven associated with the disadvantage that the cutting forces due to the specification The grinding wheels are higher, resulting in the entire grinding process technically made considerably more difficult.
  • the device is characterized by the fact that an additional processing unit for preparing at least one centric Bearing point of the crankshaft is provided for the final operation of the multi-bearing grinding is provided as a bearing seat for hiring a steady rest.
  • the processing unit is preferably an additional one Grinding unit with at least one grinding wheel for grinding the intended for the Lünettenlagersitz centric bearing of the crankshaft.
  • the at least one grinding wheel of the processing unit has a narrower width than the width of the central bearing point, so a wide ground track for the bezel on the main bearing is generated, that the lunette jaws can be easily recognized.
  • the ground track must pass through the narrow grinding wheel is generated, be at least about 2 mm wider than the Lünettenbacken itself.
  • the additional processing unit is the crankshaft either fed or swiveled to this when the grinding spindle for final multi-stage grinding of the crankshaft in disengaged position located with the crankshaft.
  • the multi-bearing grinding is performed so that before the Grinding the centric bearing points to final dimensions at least pre-ground the bearing point which is to serve as a bearing seat for a bezel. That is, all Processing steps are carried out at a clamping of the workpiece.
  • Another possibility is as previously related to described the device to grind the Lünettensitz by means of a grinding wheel, with an additional grinder inside the grinder is used.
  • FIG. 1 shows a simplified representation in the form of a plan view, wherein a crankshaft 1 with the clamping situation and the grinding wheel set 12, 13 is shown.
  • the crankshaft 1 is in a floating chuck 6 is recorded with a tip 8 in the center of the crankshaft 1 and is positioned by a longitudinal stop 7 in its length.
  • the floating jaws of the chuck 6 span the Crankshaft 1 at its flange, so that the Radialmitvia ensures grinding is.
  • crankshaft 1 On the side of the tailstock, the crankshaft 1 is also through a centering tip 9, so that the crankshaft 1 at both ends in their already machined centerings is added and tensioned, causing them in their position and tension is precisely positioned for grinding.
  • measuring devices 4 and 5 constructed on the grinding table are shown, However, when grinding the bezel seat not on the crankshaft attack.
  • the bezel 3 is also built on the grinding table, but is located when grinding the bezel seat inevitably not with their jaws on the workpiece created.
  • the crankshaft 1 has a plurality of main bearings 15, namely in the present Example I, II, III and IV.
  • the grinding of the Lünettensitzes takes place in the in Figure 1 shown representation on the centrally rotating main bearing II.
  • a processing unit 11 in the form of an additional grinding device For use, preferably with a spindle unit in the form of a Motor spindle is formed.
  • This motor spindle increases in the front area her spindle nose a grinding wheel 10 on.
  • these additional grinding device 11 are pivoted to the crankshaft can, it must be parallel to the Z-axis, which is the CNC-axis represents the grinding table, and the grinding wheels 13 must by means of the X-axis, which serves for the feed movement of the grinding headstock 12, cleared become.
  • FIG. 1 further shows the grinding spindle 12, which is exactly parallel to the crankshaft extending central axis 14 around which the grinding wheels 13, for processing the main bearing I to IV, are rotatable.
  • the main bearings to be ground on the crankshaft 1 are denoted by the reference numeral 15 marked.
  • the grinding wheel 10 has a width of about 10 to 12 mm, wherein the Lunette jaws, for example, about 8 mm wide
  • a grinding wheel made of corundum or a CBN grinding wheel are used.
  • the auxiliary grinding device 11 is as einschwenkbare Unit described. However, it is also possible to use this additional grinding device 11 either at any position within the grinder or retract to swing.
  • FIG. 2 shows a greatly simplified side view in the region of the main bearing II of Figure 1 shown.
  • the grinding wheel 10 for grinding the Lünettensitzes is arranged in front of a grinding wheel 13 of the grinding spindle 12.
  • the Crankshaft 1 shown.
  • the center axes are all Grinding wheels 10 and 13 and the center axis of the crankshaft 1 aligned in parallel, these central axes preferably lie in a horizontal plane.
  • the corrections then take place via the CNC control of the Machine, the measuring devices continuously the actual values at the diameter of the Main camp I and IV record. Once at one of the main bearings of the crankshaft 1 has reached the desired level during grinding, the grinding cycle is then ended and the grinding spindle 12 cleared.
  • FIG. 4 shows a simplified side view of that shown in FIG Top view in the area of the working space of the main warehouse II on it can be seen that then the additional grinding device 11 with the grinding wheel 10 upwards is swung out, but it is also conceivable that they are after construction of the Grinder and the available space in any other arbitrary Position can be pivoted in or out or moved.
  • Figure 5 shows in detail the process of grinding with the grinding wheel 13 am
  • Main bearing of the crankshaft 1 wherein the main body of the grinding wheel 13A and the CBN pad is designated 14.
  • the lining height is generally about 5 mm.
  • On the main bearing of the crankshaft 1 shown here are also the lateral radii 15, as can be seen mitgeschliffen. At the radius transition in relation on the flat surfaces, for example, a Planschulterière of about 4 grinded to 5 mm.
  • FIG 6 is shown as a simplified representation, as with the grinding wheel 13 is ground at the main bearing.
  • the main bearing has an elevation 16 on, by pre-processing, such as whirling or turning on one separate device was applied. It is clear that the Grinding wheel 13 only at the elevation 16 at this main bearing in schleifendem Engage, however, the side zones 17 and the other main bearings the crankshaft 1 when grinding the Lünettensitzes not be mitgeschliffen. After the lunette seat is sanded on the circumference of the elevation 16, is employed the bezel.
  • the grinding wheel set is delivered further, so that the crankshaft 1 can be ground to the finished final size.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Claims (10)

  1. Dispositif permettant le meulage de points d'appui centrés de vilebrequins, présentant une unité de serrage pour le serrage et l'entraínement du vilebrequin sur leur axe de rotation, une unité de broche porte-meule comportant une broche porte-meule dont l'axe de rotation est parallèle à l'axe de rotation du vilebrequin et qui peut être déplacée perpendiculairement à ce vilebrequin, la broche porte-meule portant un nombre de meules correspondant aux points d'appui centrés à meuler et au moins une lunette opposée à la broche porte-meule destinée au positionnement du vilebrequin dans la région d'au moins un point d'appui centré, caractérisé en ce qu'une unité d'usinage supplémentaire (11) est prévue pour ébaucher au moins un point d'appui (2) centré du vilebrequin (1) pour former un siège de palier pour les lunettes (3), rehaussé par rapport au point d'appui, et la lunette (3) étant configurée de manière à pouvoir être toujours asservie pendant le meulage des paliers vers le positionnement opposé jusqu'à leur cote finie.
  2. Dispositif selon la revendication 1, dans lequel l'unité d'usinage (11) est une unité de meulage comportant au moins une meule (10).
  3. Dispositif selon la revendication 2, dans lequel la meule (10) a une largeur plus faible que la largeur du point d'appui centré (2).
  4. Dispositif selon la revendication 2, dans lequel l'unité d'usinage (11), pour qu'elle entre en prise avec le vilebrequin (1) entre le vilebrequin (1) et la broche porte-meule (12) si celle-ci n'est pas en position d'entrée en prise, peut être déplacée ou pivotée vers l'intérieur par rapport à la broche porte-meule (12).
  5. Dispositif selon la revendication 4, dans lequel l'entraínement de l'unité d'usinage (11 ) est formé séparément.
  6. Dispositif selon l'une quelconque des revendications 1 à 5, dans lequel la lunette (3) est réglée automatiquement sur le point d'appui centré correspondant du vilebrequin (1).
  7. Dispositif selon l'une quelconque des revendications 1 à 6, dans lequel les meules (10, 13) sont des meules CBN.
  8. Procédé de meulage de points d'appui centrés de vilebrequins dans lequel les points d'appui centrés sont meulés simultanément au moyen d'un jeu de meules dans une opération de meulage multipaliers, caractérisé en ce que, avant la finition des points d'appui (2) centrés à la cote finale au moins sur un point d'appui, un siège de palier, au moins avec une cote rehaussée par rapport au point d'appui, est meulé pour une lunette (3) et asservi pendant le meulage des sièges de palier à la cote finale de la lunette (3) jusqu'à la cote finale du siège de palier.
  9. Procédé selon la revendication 8, dans lequel le siège de palier est meulé avec une première meule (10) puis, après le réglage de la lunette (3) les points d'appui (2) centrés du vilebrequin (1) sont finis avec le jeu de meules.
  10. Procédé selon la revendication 8, dans lequel le siège de palier est ébauché avec une meule (13) du jeu de meules à un contour (16) rehaussé du palier principal puis, après le réglage de la lunette (3) les points d'appui centrés du vilebrequin (1) finis avec le jeu de meules.
EP02777056A 2001-09-11 2002-09-10 Procede et dispositif pour polir des points d'appui centraux de vilebrequins Expired - Fee Related EP1427568B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10144644 2001-09-11
DE10144644A DE10144644B4 (de) 2001-09-11 2001-09-11 Verfahren und Vorrichtung zum Schleifen von zentrischen Lagerstellen von Kurbelwellen
PCT/EP2002/010135 WO2003022521A1 (fr) 2001-09-11 2002-09-10 Procede et dispositif pour polir des points d'appui centraux de vilebrequins

Publications (2)

Publication Number Publication Date
EP1427568A1 EP1427568A1 (fr) 2004-06-16
EP1427568B1 true EP1427568B1 (fr) 2005-01-19

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EP02777056A Expired - Fee Related EP1427568B1 (fr) 2001-09-11 2002-09-10 Procede et dispositif pour polir des points d'appui centraux de vilebrequins

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Country Link
US (1) US6913522B2 (fr)
EP (1) EP1427568B1 (fr)
JP (1) JP4047277B2 (fr)
KR (1) KR100820985B1 (fr)
CN (1) CN100343017C (fr)
CZ (1) CZ304903B6 (fr)
DE (2) DE10144644B4 (fr)
ES (1) ES2235096T3 (fr)
RU (1) RU2303510C2 (fr)
WO (1) WO2003022521A1 (fr)

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JP4730944B2 (ja) * 2004-06-04 2011-07-20 コマツＮｔｃ株式会社 多頭研削盤及び多頭研削盤を用いた研削方法
DE102004043404A1 (de) * 2004-09-08 2006-03-09 Volkswagen Ag Verfahren zur Bearbeitung von Rotationsteilen
DE102005024389B4 (de) * 2005-05-27 2016-03-31 Schaeffler Technologies AG & Co. KG Verfahren und Vorrichtung zum Schleifen der Außenumfangsfläche eines wellen- bzw. walzenförmigen Werkstückes
DE102007009843B4 (de) 2007-02-28 2010-04-08 Erwin Junker Maschinenfabrik Gmbh Verfahren zur Schleifbearbeitung eines Maschinenbauteils und Schleifmaschine zur Durchführung des Verfahrens
DE102007026562B4 (de) 2007-06-08 2010-08-26 Erwin Junker Maschinenfabrik Gmbh Schleifzentrum und Verfahren zum gleichzeitigen Schleifen mehrerer Lager von Kurbelwellen
DE102007034706B3 (de) 2007-07-25 2008-09-11 Erwin Junker Maschinenfabrik Gmbh Schleifzentrum und Verfahren zum gleichzeitigen Schleifen mehrerer Lager und endseitigen Flächen von Kurbelwellen
KR200449624Y1 (ko) * 2007-11-16 2010-07-23 주식회사 세기텍 도로 경계석용 커버
CN101214627B (zh) * 2008-01-18 2010-08-11 潘旭华 一种曲轴连杆颈的磨削加工方法
DE102008007175B4 (de) * 2008-02-01 2010-06-02 Erwin Junker Maschinenfabrik Gmbh Verfahren zum Schleifen der Haupt- und Hublager einer Kurbelwelle durch Außenrundschleifen und Vorrichtung zur Durchführung des Verfahrens
DE102009024209B4 (de) * 2009-06-08 2012-12-06 Erwin Junker Maschinenfabrik Gmbh Verfahren und vorrichtung zum mehrlagenschleifen von werkstücken
WO2011010528A1 (fr) * 2009-07-22 2011-01-27 株式会社ジェイテクト Procédé et dispositif permettant d'empêcher le glissement d'une pièce
DE102009051737B3 (de) * 2009-11-03 2010-10-07 Erwin Junker Maschinenfabrik Gmbh Verfahren zum Schleifen der Haupt- und Hublager einer Kurbelwelle durch Aussenrundschleifen und Schleifmaschine zum Durchführen des Verfahrens
JP5505099B2 (ja) * 2010-06-04 2014-05-28 株式会社ジェイテクト 複合研削盤による研削方法
JP5577166B2 (ja) * 2010-06-24 2014-08-20 コマツＮｔｃ株式会社 工作機械
DE102010036065B4 (de) * 2010-09-01 2014-02-06 Erwin Junker Grinding Technology A.S. Verfahren zum Rundschleifen eines Werkstücks, das Werkstück enthaltendes System und Vorrichtung zum spitzenlosen Rundschleifen des Systems
IT1403602B1 (it) * 2010-12-22 2013-10-31 Tenova Spa Metodo per il posizionamento di cilindri operativi su di una macchina rettificatrice e macchina rettificatrice che attua tale metodo
DE102011076809B4 (de) 2011-05-17 2014-06-26 Erwin Junker Maschinenfabrik Gmbh Verfahren zur komplettbearbeitung zumindest von unbearbeiteten zapfen und planschultern geschmiedeter oder gegossener rohlinge einer kurbelwelle sowie zur durchführung des verfahrens vorgesehene fertigungslinie
CN103464803A (zh) * 2013-08-24 2013-12-25 中国北车集团大同电力机车有限责任公司 工件端面螺纹孔的加工方法及设备
CN105829021B (zh) * 2014-02-21 2018-06-01 德国索菲纳有限公司 用于加工轴止推轴承的精加工装置和方法
CN106687252B (zh) * 2014-08-06 2019-07-09 德国索菲纳有限公司 精加工装置及其配置方法和操作方法
DE102015206082A1 (de) * 2015-04-02 2016-10-06 Mahle International Gmbh Schleifmaschine
CN106112731A (zh) * 2016-07-01 2016-11-16 无锡康柏斯机械科技有限公司 一种轮胎表面糙刺打磨装置
CN107336121B (zh) * 2017-09-05 2019-02-19 湖州吴兴华隆机械有限公司 一种汽车曲轴加工用抛光机
CN110238711B (zh) * 2019-07-11 2020-03-24 杭州之江磁业有限公司 铸造铝镍钴磁钢磨加工工艺
CN110774066B (zh) * 2019-11-05 2020-12-01 平湖市超越时空图文设计有限公司 一种金属异形件定位夹紧打磨设备
CN110842705B (zh) * 2019-11-22 2021-03-19 安徽鼎恒实业集团有限公司 一种曲轴再制造用打磨装置

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Publication number Publication date
JP2005501754A (ja) 2005-01-20
CZ304903B6 (cs) 2015-01-14
DE10144644A1 (de) 2003-04-10
CN100343017C (zh) 2007-10-17
RU2004110944A (ru) 2005-06-10
KR20040030974A (ko) 2004-04-09
US20040248502A1 (en) 2004-12-09
EP1427568A1 (fr) 2004-06-16
KR100820985B1 (ko) 2008-04-10
JP4047277B2 (ja) 2008-02-13
ES2235096T3 (es) 2005-07-01
RU2303510C2 (ru) 2007-07-27
DE50202079D1 (de) 2005-02-24
WO2003022521A1 (fr) 2003-03-20
CZ2004346A3 (cs) 2004-08-18
CN1541150A (zh) 2004-10-27
DE10144644B4 (de) 2006-07-13
US6913522B2 (en) 2005-07-05

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