EP0366506A1 - Zur Schleifbearbeitung von zylindrischen Lagerflächen von Werkstücken, insbesondere für die Bearbeitung von Kurbelwellen- und Kurbelzapfen mittels Bandschleifer - Google Patents

Zur Schleifbearbeitung von zylindrischen Lagerflächen von Werkstücken, insbesondere für die Bearbeitung von Kurbelwellen- und Kurbelzapfen mittels Bandschleifer Download PDF

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Publication number
EP0366506A1
EP0366506A1 EP89402555A EP89402555A EP0366506A1 EP 0366506 A1 EP0366506 A1 EP 0366506A1 EP 89402555 A EP89402555 A EP 89402555A EP 89402555 A EP89402555 A EP 89402555A EP 0366506 A1 EP0366506 A1 EP 0366506A1
Authority
EP
European Patent Office
Prior art keywords
arm
jaws
machined
abrasive
guide
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
EP89402555A
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English (en)
French (fr)
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EP0366506B1 (de
Inventor
Jean-Claude Pineau
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.)
Procedes Machines Speciales S P M S Ste
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Procedes Machines Speciales S P M S Ste
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Publication date
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Application filed by Procedes Machines Speciales S P M S Ste filed Critical Procedes Machines Speciales S P M S Ste
Publication of EP0366506A1 publication Critical patent/EP0366506A1/de
Application granted granted Critical
Publication of EP0366506B1 publication Critical patent/EP0366506B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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

Definitions

  • the present invention relates to a device for the abrasive machining of cylindrical bearings on parts, in particular for the machining by grooming (using an abrasive strip) of the pins and crank pins on crankshafts, comprising, for the machining of each bearing, an arm which is mounted freely pivoting about a horizontal axis on a vertically movable slide and which comprises, at its lower part, two jaws which can be clamped one against the other and carrying means of applying the abrasive against the surface to be machined when tightening the jaws.
  • the two jaws of each arm each have two pads for applying the abrasive strip to the surface to be machined, this application being effected by the clamping effect produced by spring washers fixed on one of the two jaws.
  • the subject of the present invention is a machining device of the type defined above, designed so as to allow a tightening providing uniformly controllable application pressures on the surfaces to be machined.
  • the invention also relates to a device of the type defined above, allowing balancing of the arm (s) during the machining of spans eccentric.
  • the invention relates to a device of the type defined above, allowing each arm to center itself on the surface to be machined on the workpiece, even in the case of eccentric ranges, whatever the position. angular of these eccentric bearings relative to the axis of rotation, thus eliminating the need for angular indexing of the workpiece.
  • each arm comprises three means for applying the abrasive against the surface to be machined, a first in a fixed central position on the arm for applying the abrasive from the top to the surface to be machined and the other two in lateral position on the two jaws to apply the abrasive from two sides and from below against the surface to be machined, when clamping the jaws, which allows isostatic clamping (3 points).
  • the two jaws articulated on the arm are coupled so as to pivot synchronously in opposition with respect to the arm, under the action of a common operating means with controlled clamping force.
  • said common operating means is constituted by a jack with controlled supply pressure.
  • the two jaws are coupled by gears, each arm carrying a pinion engaged with the pinion of the other jaw.
  • the arm With a view to balancing the arm, even in the case of machining of eccentric spans, it is advantageous for the arm to be movable relative to the slide under the action of a jack with controlled supply pressure.
  • Each arm of the machine conforms to the invention advantageously comprises guide means allowing the arm to be centered on the bearing surface to be machined when the arm descends on the latter.
  • These guide means may comprise on each jaw a first guide which is located below the abrasive application means provided on this jaw and which has a guide surface arranged so that on the jaws open, that is to say -display apart, the two guide surfaces of the first two guides of each arm converge upwards, the reciprocal distance of said guide surfaces, at the bottom of the latter, being greater than twice the maximum eccentricity of the eccentric bearings.
  • the guide means further comprise two second guides arranged on the arm, on either side and below the abrasive application means provided on the arm, the two second guides also having surfaces guide converging upwards.
  • the grinding machining arm is part of a superfinishing machine by grooming, making it possible to machine all or part of the cylindrical bearings of a crankshaft 1 of which the trunnions 2 and the crank pins 3 are shown diagrammatically.
  • the machine comprises, for this purpose, an arm support slide 4 mounted vertically movable on a frame 5 under the action of a control not shown.
  • the slide 4 carries, between each two flanges 6, floating arms 7, that is to say mounted freely pivoting about a horizontal axis 8.
  • the horizontal axis 8 is integral with a slide 9 mounted movable under the action of a jack 10 in a slide 11 provided at the upper end of the arm 7.
  • the arm 7 carries a support 12 provided with an application pad 13 whose function will appear later. Furthermore, the arm 7 carries, near its lower end, two jaws 14a, 14b each of which is provided with a support 15a, 15b equipped with an application pad 16a, 16b,
  • the two jaws 14a, 14b are articulated by axes 17a, 17b on the arm 7 and are coupled by two pinions 18a, 18b engaged with one another.
  • a jack 19 mounted between the arm 7 and the jaw 14a makes it possible to pivot the latter around the axis 17a and, due to the coupling of the two jaws 14a, 14b by the pinions 18a, 18b, to pivot the other simultaneously jaw 14b in synchronism in opposite directions.
  • the articulation of the jaws 14a, 14b on the arm 7 and the arrangement of the supports 15a, 15b on the jaws 14a, 14b are chosen so that when the arm 7 is lowered on the workpiece and the jaws 14a, 14b are tightened around this part by the jack 19, as shown in FIG. 3, the three supports 12, 15a, 15b and the application pads 13, 16a and 16b of these supports, are arranged substantially at the angles of an equilateral triangle, the shoe 13 fixed to the arm 7 being in abutment from the top on the part and the two shoes 16a, 16b fixed to the two jaws 14a, 14b being pressed from the bottom and from the two opposite sides against the workpiece.
  • the arm 7 also carries two guides 20a, 20b arranged on either side of the support 12, the two guides having guide surfaces 21a, 21b located below the shoe 13 and converging upwards, such that the guides 20a, 20b ensure, during the lowering of the arm 7 on the part 1 to be machined, self-centering of the arm 7, therefore of the shoe 13, relative to the part 1.
  • each of the two jaws 14a, 14b carries, below its support 15a, 15b, a guide 22a, 22b having a guide surface 23a, 23b.
  • the guides 22a, 22b are shaped and arranged so that when the two jaws 14a, 14b are open ( Figures 1 and 2), the guide surfaces 23a, 23b converge upwards, their maximum reciprocal spacing at the lower span being greater than twice the maximum eccentricity of the crank pins of the part 1 to be machined and their minimum reciprocal spacing being substantially equal to the maximum reciprocal distance of the guide surfaces 21a, 21b of the two fixed guides 20a, 20b.
  • Each arm 7 is, moreover, equipped with a guide and tensioning assembly for an abrasive strip 24.
  • This assembly is designed so as to pass the abrasive strip 24 over the three pads 13, 16a and 16b and comprises a set guide and deflection rollers, by means of which the abrasive strip 24 circumvents the guide surfaces 21a, 21b, 23a, 23b.
  • This guide and tension assembly is not the subject of the present invention and will not be described in more detail.
  • crankshaft 1 To machine all or part of the cylindrical bearings of a part 1, for example, all or part of the pins 2 and / or crank pins 3 of a crankshaft, using a multiple device comprising, on the same slide 3 , as many arms 7 as the crankshaft 1 has bearing surfaces to be machined simultaneously, the crankshaft 1 is brought below the floating arms 7 of the slide 4 raised in the high position, the jaws 14a, 14b of the arms 7 being open (FIG. 1). The crankshaft 1 is supported, in a manner known per se, for example between points, and is driven in rotation, during the machining of the bearings, around its axis of rotation defined by the axis of the pins 2.
  • the arm 7 illustrated is intended for the machining of a journal 2 of the crankshaft 1.
  • the two jaws 14a, 14b are then clamped by supplying the jack 19, the stroke of which is controlled by two limit switches 25, 26 adjustable as a function of the diameter of the bearing surface to be machined, so that the two pads 16a, 16b are located applied laterally from below against the cylindrical seat 2 to be machined, by coupling the two jaws 14a, 14b by the pinions 18a, 18b.
  • the three pads 13, 16a, 16b are thus supported with a uniform pressure against the surface 2 to be machined, substantially at the three angles of an equilateral triangle, and thus apply the abrasive strip 24 with a uniform pressure against the surface 2 (FIG. 3). It then suffices to rotate the part 1 around its axis of rotation, to ensure uniform machining of the bearing 2.
  • crank pins 3 of a crankshaft 1 It is not the same when machining eccentric cylindrical bearings, for example crank pins 3 of a crankshaft 1.
  • these crank pins 3 eccentric with respect to the axis of rotation (axis of the trunnions) carry out a circular trajectory eccentric with respect to the axis of rotation. It is therefore necessary that each arm 7 having to machine such an eccentric bearing, can follow this movement of the bearing to be machined, without this arm being unbalanced by the effects originating from the mass of the arm set in motion by the workpiece 1 during the rotation of the latter.
  • Balancing of the arm 7 of the device according to the invention is ensured by the jack 10 which exerts a constant effect on the arm 7, whatever the position of the latter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
EP89402555A 1988-09-27 1989-09-19 Zur Schleifbearbeitung von zylindrischen Lagerflächen von Werkstücken, insbesondere für die Bearbeitung von Kurbelwellen- und Kurbelzapfen mittels Bandschleifer Expired - Lifetime EP0366506B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR888812622A FR2636877B1 (fr) 1988-09-27 1988-09-27 Machine pour l'usinage par abrasif de portees cylindriques sur des pieces, notamment pour l'usinage par toilage des tourillons et manetons sur des vilebrequins
FR8812622 1988-09-27

Publications (2)

Publication Number Publication Date
EP0366506A1 true EP0366506A1 (de) 1990-05-02
EP0366506B1 EP0366506B1 (de) 1992-06-17

Family

ID=9370448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89402555A Expired - Lifetime EP0366506B1 (de) 1988-09-27 1989-09-19 Zur Schleifbearbeitung von zylindrischen Lagerflächen von Werkstücken, insbesondere für die Bearbeitung von Kurbelwellen- und Kurbelzapfen mittels Bandschleifer

Country Status (6)

Country Link
US (1) US5058325A (de)
EP (1) EP0366506B1 (de)
JP (1) JPH0366553A (de)
DE (1) DE68901850T2 (de)
ES (1) ES2033115T3 (de)
FR (1) FR2636877B1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2702693A1 (fr) * 1993-03-18 1994-09-23 Procedes Machines Speciales Outillage pour l'application de toile abrasive sur une machine d'usinage par toilage de portées cylindriques sur des pièces.
EP0680806A1 (de) * 1994-05-04 1995-11-08 Societe Des Procedes Machines Speciales Werkzeug zum Bandschleifen von zylindrischen Lagerflächen mit Durchmesserkontrole der Lager
EP0733437A1 (de) * 1995-03-24 1996-09-25 Toyota Jidosha Kabushiki Kaisha Gerät zur Schleifbearbeitung, ausgerüstet mit einer Vorrichtung zur Erleichterung des Schleifbandwechsels
DE19602974A1 (de) * 1996-01-27 1997-07-31 Thielenhaus Ernst Kg Maschine für die Feinschleifbearbeitung einer zylindrischen Lagerfläche an einer Welle mit Hilfe eines Schleifbandes
US5755615A (en) * 1995-11-13 1998-05-26 Toyota Jidosha Kabushiki Kaisha Lapping apparatus
US6383063B1 (en) 1998-04-03 2002-05-07 Toyota Jidosha Kabushiki Kaisha Polishing apparatus and polishing method
EP2324955A1 (de) 2009-11-24 2011-05-25 Renault s.a.s. Maschine zum Finishen

Families Citing this family (22)

* 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
DE4320945C2 (de) * 1993-06-24 1996-05-23 Grieshaber Masch Bandschleifmaschine
DE4328006C1 (de) * 1993-08-20 1994-08-04 Thielenhaus Ernst Kg Maschine für die zweistufige Bearbeitung von vorgeschliffenen Wellen, insbesondere von Kraftfahrzeug-Nockenwellen, durch Finishschleifen
DE4426923A1 (de) * 1994-07-29 1996-02-01 Grieshaber Masch Vorrichtung zur Oberflächenbearbeitung von Werkstücken
IT1279641B1 (it) * 1995-10-03 1997-12-16 Marposs Spa Apparecchio per il controllo del diametro di perni di biella in moto orbitale
US5951377A (en) * 1996-08-01 1999-09-14 Radtec, Inc. Microfinishing machine
US5803796A (en) * 1996-12-18 1998-09-08 Barton, Ii; Kenneth A. Microfinishing machine
FR2758756B1 (fr) * 1997-01-30 1999-02-26 Procede Machines Speciales Spm Ensemble d'usinage par bande abrasive d'une portee cylindrique d'une piece
GB9810771D0 (en) * 1998-05-19 1998-07-15 Active Silicon Limited Method of detecting colours
FR2808463B1 (fr) * 2000-05-04 2002-09-13 Procedes Et Machines Speciales Machine d'usinage par bande abrasive de portees cylindriques sur des pieces
US7169028B1 (en) * 2005-11-02 2007-01-30 Barton Ii Kenneth A Flexible finishing shoe
DE102009032353A1 (de) * 2009-07-08 2011-09-08 Hommel-Etamic Gmbh Verfahren zur Ermittlung der Form eines Werkstücks
DE102009042252B4 (de) 2009-09-22 2014-03-06 Jenoptik Industrial Metrology Germany Gmbh Meßvorrichtung
DE102010013069B4 (de) 2010-03-26 2012-12-06 Hommel-Etamic Gmbh Meßvorrichtung
DE102010035147B4 (de) 2010-08-23 2016-07-28 Jenoptik Industrial Metrology Germany Gmbh Meßvorrichtung
DE102011104010A1 (de) * 2011-06-10 2012-12-13 Gerd Eisenblätter Gmbh Bandschleifvorrichtung
DE102012018580B4 (de) 2012-09-20 2015-06-11 Jenoptik Industrial Metrology Germany Gmbh Messvorrichtung und Messverfahren zur Inprozess-Messung an Prüflingen während eines Bearbeitungsvorganges an einer Bearbeitungsmaschine, insbesondere einer Schleifmaschine
US10505412B2 (en) 2013-01-24 2019-12-10 Clearwater Holdings, Ltd. Flux machine
DE102016111155B4 (de) * 2016-06-17 2024-02-29 Supfina Grieshaber Gmbh & Co. Kg Finishband-Klemmeinrichtung und Finishvorrichtung
WO2019050772A1 (en) 2017-09-08 2019-03-14 Clearwater Holdings, Ltd. SYSTEMS AND METHODS FOR ENHANCING ELECTRICITY STORAGE
EP3695493B1 (de) 2017-10-29 2024-03-20 Clearwater Holdings, Ltd. Modulare elektromagnetische maschine
CN107953209B (zh) * 2018-01-03 2019-04-19 重庆大学 一种用于高表面完整性加工的高效砂带磨削专用磨具

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1334361A (en) * 1969-12-06 1973-10-17 Bremer Vulkan Schiffbau Apparatus for superfinishing rotating crankpins of crankshafts
DE8602817U1 (de) * 1986-02-04 1986-04-10 Maschinenbau Grieshaber GmbH & Co, 77709 Wolfach Vorrichtung für die Bearbeitung von Lagerzapfen von Kurbelwellen od. dgl.

Family Cites Families (6)

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US1493543A (en) * 1923-03-29 1924-05-13 Hight William Monion Bottle-cap remover
US3041792A (en) * 1959-09-14 1962-07-03 Norton Co Lapping machine
US4402239A (en) * 1979-04-30 1983-09-06 Eckel Manufacturing Company, Inc. Back-up power tongs and method
US4682444A (en) * 1984-05-07 1987-07-28 Industrial Metal Products Corporation Microfinishing apparatus and method
JPS61244461A (ja) * 1985-04-22 1986-10-30 Honda Motor Co Ltd 工具の位置調整装置
DE8616462U1 (de) * 1986-06-20 1987-10-22 Maschinenbau Grieshaber Gmbh & Co, 7620 Wolfach, De

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1334361A (en) * 1969-12-06 1973-10-17 Bremer Vulkan Schiffbau Apparatus for superfinishing rotating crankpins of crankshafts
DE8602817U1 (de) * 1986-02-04 1986-04-10 Maschinenbau Grieshaber GmbH & Co, 77709 Wolfach Vorrichtung für die Bearbeitung von Lagerzapfen von Kurbelwellen od. dgl.

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624431A1 (de) * 1993-03-18 1994-11-17 Societe Des Procedes Machines Speciales Bandschleifmaschine für zylindrische Werkstücke
US5522762A (en) * 1993-03-18 1996-06-04 Societe Procedes Machines Speciales S.P.M.S. Tool for applying surface coated abrasives for use on a machine for abrasion machining of cylindrical surfaces on workpieces
FR2702693A1 (fr) * 1993-03-18 1994-09-23 Procedes Machines Speciales Outillage pour l'application de toile abrasive sur une machine d'usinage par toilage de portées cylindriques sur des pièces.
US5651719A (en) * 1994-05-04 1997-07-29 Societe Procedes Machines Speciales S.P.M.S. Tooling for abrasive belt machining of cylindrical bearing surfaces with provision for monitoring bearing surface diameter
EP0680806A1 (de) * 1994-05-04 1995-11-08 Societe Des Procedes Machines Speciales Werkzeug zum Bandschleifen von zylindrischen Lagerflächen mit Durchmesserkontrole der Lager
FR2719516A1 (fr) * 1994-05-04 1995-11-10 Procedes Machines Speciales Outillage pour le toilage de portées cylindriques avec contrôle de diamètre des portées.
EP1022092A1 (de) * 1995-03-24 2000-07-26 Toyota Jidosha Kabushiki Kaisha Gerät zur Schleifbearbeitung, ausgerüstet mit einer Vorrichtung zur Erleichterung des Schleifbandwechsels
US5865669A (en) * 1995-03-24 1999-02-02 Toyota Jidosha Kabushiki Kaisha Abrasive machining apparatus equipped with a device for facilitating replacement of abrasive tape
EP0950467A2 (de) * 1995-03-24 1999-10-20 Toyota Jidosha Kabushiki Kaisha Gerät zur Schleifbearbeitung, ausgerüstet mit einer Vorrichtung zur Erleichterung des Schleifbandwechsels
EP0950467A3 (de) * 1995-03-24 1999-11-03 Toyota Jidosha Kabushiki Kaisha Gerät zur Schleifbearbeitung, ausgerüstet mit einer Vorrichtung zur Erleichterung des Schleifbandwechsels
EP0733437A1 (de) * 1995-03-24 1996-09-25 Toyota Jidosha Kabushiki Kaisha Gerät zur Schleifbearbeitung, ausgerüstet mit einer Vorrichtung zur Erleichterung des Schleifbandwechsels
US5755615A (en) * 1995-11-13 1998-05-26 Toyota Jidosha Kabushiki Kaisha Lapping apparatus
DE19602974A1 (de) * 1996-01-27 1997-07-31 Thielenhaus Ernst Kg Maschine für die Feinschleifbearbeitung einer zylindrischen Lagerfläche an einer Welle mit Hilfe eines Schleifbandes
US6383063B1 (en) 1998-04-03 2002-05-07 Toyota Jidosha Kabushiki Kaisha Polishing apparatus and polishing method
EP2324955A1 (de) 2009-11-24 2011-05-25 Renault s.a.s. Maschine zum Finishen
FR2952845A1 (fr) * 2009-11-24 2011-05-27 Renault Sa Machine de toilage

Also Published As

Publication number Publication date
US5058325A (en) 1991-10-22
JPH0366553A (ja) 1991-03-22
DE68901850T2 (de) 1993-02-04
EP0366506B1 (de) 1992-06-17
ES2033115T3 (es) 1993-03-01
FR2636877B1 (fr) 1994-07-01
DE68901850D1 (de) 1992-07-23
FR2636877A1 (fr) 1990-03-30

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