EP0624431A1 - Bandschleifmaschine für zylindrische Werkstücke - Google Patents

Bandschleifmaschine für zylindrische Werkstücke Download PDF

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Publication number
EP0624431A1
EP0624431A1 EP94400578A EP94400578A EP0624431A1 EP 0624431 A1 EP0624431 A1 EP 0624431A1 EP 94400578 A EP94400578 A EP 94400578A EP 94400578 A EP94400578 A EP 94400578A EP 0624431 A1 EP0624431 A1 EP 0624431A1
Authority
EP
European Patent Office
Prior art keywords
pads
arm
machined
lining
abrasive cloth
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
EP94400578A
Other languages
English (en)
French (fr)
Other versions
EP0624431B1 (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
Original Assignee
Procedes Machines Speciales S P M S Ste
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 Procedes Machines Speciales S P M S Ste filed Critical Procedes Machines Speciales S P M S Ste
Publication of EP0624431A1 publication Critical patent/EP0624431A1/de
Application granted granted Critical
Publication of EP0624431B1 publication Critical patent/EP0624431B1/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
    • 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
    • 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 present invention relates to a tool for applying abrasive cloth on a machine tool by grinding cylindrical surfaces on parts, in particular pins and crank pins on crankshafts.
  • Machines of this type known for example from patent application EP-A-0 366 506 by the applicant include, for each bearing to be machined on a workpiece, a pivoting and movable arm vertically carrying three pads for applying abrasive cloth arranged substantially at the three angles of an equilateral triangle.
  • a first of these three pads is mounted in the upper middle position on the arm and the other two in the lower lateral position on two jaws articulated on the arm and coupled so as to be able to be clamped one against the other by synchronous pivoting in opposition , under the action of a common maneuver.
  • the arm is movable vertically under the action of a balancing cylinder with controlled supply pressure.
  • the abrasive cloth application pads have an application surface in a circular arc extending over a relatively small angle, generally less than 30 °. These tools give good results with regard to the surface condition of the spans.
  • the present invention relates to a tool for the application of abrasive cloth allowing machining by grooming with greater precision on the cylindrical bearing surfaces of parts, in particular the journals and the crankshaft crank pins.
  • the abrasive cloth application tool which is the subject of the present invention is intended for a machine for the machining by grinding of cylindrical bearings on parts, in particular journals and crankshaft pins, machine of the type comprising, for each bearing to machining, a pivoting and vertically movable arm carrying three pads for applying abrasive cloth disposed substantially at the three angles of an equilateral triangle.
  • each of said pads has a concave application surface in an arc extending over an angle greater than 60 ° and less than 120 ° so that the three pads virtually completely enclose the surface to be machined.
  • the three pads apply the abrasive cloth against the surface to be machined, not only each with the same pressure, but also with a practically uniform pressure over their entire angular length. This ensures optimal compensation for any shape defects (ovalization, runout, etc.) of the litter.
  • this shoe is advantageously mounted with limited mobility in horizontal translation perpendicular to the axis of the bearing surface to be machined.
  • each lateral shoe is advantageously mounted with limited mobility in oscillation perpendicular to the axis of the bearing to be machined.
  • each skate comprises a rigid base carrying a lining made of more flexible material, with a low coefficient of fiction.
  • This lining may for example be made of vulcanized synthetic rubber on the base.
  • the lining can advantageously have, along its axis of curvature, a hardness which increases from the middle towards the two ends of the width of the lining.
  • the lining can comprise five sections, namely a middle section of low hardness followed towards each end by an intermediate section of medium hardness itself followed by an end section of high hardness .
  • these three hardnesses can correspond to 90, 95 and 98 Shore.
  • the grinding tool according to the invention is used on a machine according to patent application EP-A-0366 506 for the abrasive machining of cylindrical surfaces on parts, in particular for the machining of crankshaft journals and crank pins.
  • an arm 1 mounted freely pivoting about a horizontal axis on a slide not shown vertically movable.
  • the arm 1 carries two jaws 2a and 2b articulated by horizontal axes 3a and 3b on the arm 1 and coupled by toothed segments 4a, 4b so as to be able to be clamped one against the other by synchronous pivoting in opposition with respect on arm 1, under the action of a common actuating cylinder 5.
  • a first shoe 7 is mounted in the middle position on the arm 1 and two other shoes 8a and 8b are mounted in the lateral position on the two jaws 2a and 2b so that when the three pads 7, 8a and 8b are tightened, under the action of the jack 5, against the cylindrical surface 6 to be machined, with a view to applying an abrasive cloth 9 against this surface 6, the three pads 7, 8a and 8b are arranged substantially at the three angles of an equilateral triangle and, due to the balancing of the mass of the arm 1 by a balancing means not shown, for example a jack with controlled supply pressure, the three pads are applied with uniform pressure against the surface 6 to be machined.
  • a balancing means not shown, for example a jack with controlled supply pressure
  • each shoe 7, 8a, 8b extends over an angle slightly less than 120 °, so that the three shoes almost completely envelop the surface 6 to be machined.
  • the upper median shoe 7 is mounted on the arm 1 with limited mobility in horizontal translation perpendicular to the axis of the bearing 6.
  • the two lower lateral pads 8a, 8b are mounted on the jaws 2a and 2b by horizontal axes 12a and 12b with limited mobility in oscillation perpendicular to the axis of the bearing surface 6 to be machined.
  • the mobility of the three pads 7, 8a and 8b ensures optimal adaptation of the pads to the surface of the bearing surface 6 to be machined, independently of the tolerances of the structure of the arm 1 and in particular of the clearances which may occur at the toothed segments 4a, 4b coupling the two jaws 2a and 2b.
  • the upper shoe 7 comprises a rigid base 13, in this case metallic, whose concave inner surface in an arc of a circle carries a lining 14 in a more flexible material, with a low coefficient of fiction, for example vulcanized synthetic rubber.
  • a dovetail profiling 15 improves the connection of the lining 14 with the base 13.
  • the lining 14 can advantageously comprise, along its axis of curvature, several sections of different hardnesses, increasing from the middle of the width towards the two ends. In FIG. 2, these differences in hardness are symbolized by a subdivision of the lining 14 into five sections, namely a middle section 14a, two intermediate sections 14b and two end sections 14c, these sections possibly having hardnesses of 90, 95 and 98 Shore, respectively.
  • the tooling according to the invention could also be used on machines other than those corresponding to patent application EP-A-0366 506, although the latter, due to their structure, lead to machining results. particularly favorable.
  • the pads can have an angular length greater than 60 and less than 120 °, preferably between approximately 90 and 110 °.

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)
  • Polishing Bodies And Polishing Tools (AREA)
EP94400578A 1993-03-18 1994-03-17 Bandschleifmaschine für zylindrische Werkstücke Expired - Lifetime EP0624431B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9303156A FR2702693B1 (fr) 1993-03-18 1993-03-18 Outillage pour l'application de toile abrasive sur une machine d'usinage par toilage de portées cylindriques sur des pièces.
FR9303156 1993-03-18

Publications (2)

Publication Number Publication Date
EP0624431A1 true EP0624431A1 (de) 1994-11-17
EP0624431B1 EP0624431B1 (de) 1998-05-27

Family

ID=9445126

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94400578A Expired - Lifetime EP0624431B1 (de) 1993-03-18 1994-03-17 Bandschleifmaschine für zylindrische Werkstücke

Country Status (6)

Country Link
US (1) US5522762A (de)
EP (1) EP0624431B1 (de)
JP (1) JPH0752005A (de)
DE (1) DE69410527T2 (de)
ES (1) ES2116549T3 (de)
FR (1) FR2702693B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN111496637A (zh) * 2019-01-30 2020-08-07 辽宁五一八内燃机配件有限公司 一种可降低曲轴轴颈圆角粗糙度值的装置及方法

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE19850216A1 (de) * 1998-10-31 2000-05-04 Nagel Masch Werkzeug Verfahren und Vorrichtung zur Feinbearbeitung von im wesentlichen zylindrischen Werkstückoberflächen
FR2808463B1 (fr) * 2000-05-04 2002-09-13 Procedes Et Machines Speciales Machine d'usinage par bande abrasive de portees cylindriques sur des pieces
DE602004001467T2 (de) 2003-02-12 2006-11-16 Nissan Motor Co., Ltd., Yokohama Vorrichtung und Verfahren zur Oberflächen-Endbearbeitung
FR2872726B1 (fr) * 2004-07-08 2007-11-23 Societes Des Procedes Et Machi Dispositif de superfinition et procede associe
US7169028B1 (en) * 2005-11-02 2007-01-30 Barton Ii Kenneth A Flexible finishing shoe
EP2399706B9 (de) * 2010-06-22 2013-10-02 Supfina Grieshaber GmbH & Co. KG Finishvorrichtung zur finishenden Bearbeitung von Werkstückoberflächen
EP2650081B1 (de) * 2012-04-13 2013-11-27 Supfina Grieshaber GmbH & Co. KG Verfahren und Vorrichtung zur Finishbearbeitung einer Werkstückoberfläche
JP6037510B2 (ja) * 2013-04-09 2016-12-07 尚一 島田 加工装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8602817U1 (de) * 1986-02-04 1986-04-10 Maschinenbau Grieshaber GmbH & Co, 77709 Wolfach Vorrichtung für die Bearbeitung von Lagerzapfen von Kurbelwellen od. dgl.
EP0219301A2 (de) * 1985-10-08 1987-04-22 Industrial Metal Products Corporation Feinstbearbeitungsvorrichtung und Verfahren
EP0338224A2 (de) * 1988-04-21 1989-10-25 Ford-Werke Aktiengesellschaft Vorrichtung zur Feinbearbeitung der Hubzapfen von Kurbelwellen
EP0366506A1 (de) * 1988-09-27 1990-05-02 Societe Des Procedes Machines Speciales Zur Schleifbearbeitung von zylindrischen Lagerflächen von Werkstücken, insbesondere für die Bearbeitung von Kurbelwellen- und Kurbelzapfen mittels Bandschleifer
US4993191A (en) * 1989-04-28 1991-02-19 Industrial Metal Products Corporation Roller cam microfinishing tooling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219301A2 (de) * 1985-10-08 1987-04-22 Industrial Metal Products Corporation Feinstbearbeitungsvorrichtung und Verfahren
DE8602817U1 (de) * 1986-02-04 1986-04-10 Maschinenbau Grieshaber GmbH & Co, 77709 Wolfach Vorrichtung für die Bearbeitung von Lagerzapfen von Kurbelwellen od. dgl.
EP0338224A2 (de) * 1988-04-21 1989-10-25 Ford-Werke Aktiengesellschaft Vorrichtung zur Feinbearbeitung der Hubzapfen von Kurbelwellen
EP0366506A1 (de) * 1988-09-27 1990-05-02 Societe Des Procedes Machines Speciales Zur Schleifbearbeitung von zylindrischen Lagerflächen von Werkstücken, insbesondere für die Bearbeitung von Kurbelwellen- und Kurbelzapfen mittels Bandschleifer
US4993191A (en) * 1989-04-28 1991-02-19 Industrial Metal Products Corporation Roller cam microfinishing tooling

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN111496637A (zh) * 2019-01-30 2020-08-07 辽宁五一八内燃机配件有限公司 一种可降低曲轴轴颈圆角粗糙度值的装置及方法
CN111496637B (zh) * 2019-01-30 2022-04-05 辽宁五一八内燃机配件有限公司 一种可降低曲轴轴颈圆角粗糙度值的装置及方法

Also Published As

Publication number Publication date
DE69410527T2 (de) 1998-09-17
EP0624431B1 (de) 1998-05-27
DE69410527D1 (de) 1998-07-02
US5522762A (en) 1996-06-04
FR2702693A1 (fr) 1994-09-23
JPH0752005A (ja) 1995-02-28
FR2702693B1 (fr) 1995-05-24
ES2116549T3 (es) 1998-07-16

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