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WO2006004391A1 - Procede de formation d'une bague, outil de forme et machine a former utilises dans ce procede et courroie de poussee dotee d'une telle bague - Google Patents

Procede de formation d'une bague, outil de forme et machine a former utilises dans ce procede et courroie de poussee dotee d'une telle bague Download PDF

Info

Publication number
WO2006004391A1
WO2006004391A1 PCT/NL2004/000461 NL2004000461W WO2006004391A1 WO 2006004391 A1 WO2006004391 A1 WO 2006004391A1 NL 2004000461 W NL2004000461 W NL 2004000461W WO 2006004391 A1 WO2006004391 A1 WO 2006004391A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
tool
tube
forming
forming tool
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.)
Ceased
Application number
PCT/NL2004/000461
Other languages
English (en)
Inventor
Gaëlle Annick CARRIO
Andreas Joseph Hamann
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to PCT/NL2004/000461 priority Critical patent/WO2006004391A1/fr
Priority to JP2007519140A priority patent/JP4857266B2/ja
Publication of WO2006004391A1 publication Critical patent/WO2006004391A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/04—Cutting-off tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/06—Profile cutting tools, i.e. forming-tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/40—Expansion mandrels
    • B23B31/4006—Gripping the work or tool by a split sleeve
    • B23B31/4013—Details of the jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
    • B23B5/16—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G5/00—V-belts, i.e. belts of tapered cross-section
    • F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts

Definitions

  • the present invention relates to a push belt for a continuously variable transmission and to a method of manufacturing a ring for such a push belt.
  • bands In final form -where these are denoted "bands"- and in nested combination with one another such rings constitute an endless tensile means for a push belt.
  • the rings are in the known manufacturing process for push belts obtained by slitting, i.e. cutting them from a tube, normally prepared from plate shaped metal material, usually maraging steel. This and subsequent process steps for preparing a band to be used in the tensile means of a push belt are generally discussed in, for instance, the European patent publication EP-A-1055738.
  • a ring After that a ring has been slit, it is usually (stone) tumbled together with many other rings for the removal of burrs created in the slitting process, as well as for the shaping the lateral side faces of the rings by rounding off at least the edges thereof.
  • a ring is first separated by forcing a cutting tool part of the forming tool through the wall of the tube whilst it is turning and, subsequently, the lateral side faces of the separated ring are treated by bringing them into abrasive contact with a shaping tool part of the forming tool such that burrs are removed and, moreover, the side face are provided with a defined shape.
  • the ring is cut-off and its lateral side faces are treated, i.e. deburred and shaped, in the same position and in a single machine.
  • An additional advantage gained with the invention is that the cutting edge of the cutting tool parts and that of the shaping tool part are favourably integrated into one combined forming tool and, moreover, that a single machine may be applied, as compared to the known combination of the slitting and tumbling machines and tools. Also, in the proposed method neither the problem of ring to ring contact nor that of contamination will occur, because the tumbling process may be completely obviated.
  • Figure 1 schematically shows the existing process for slitting rings from a tube
  • Figure 2 is a photographic representation of a cross section of a ring part typically obtained by the known slitting process
  • Figure 3 schematically shows the existing process for tumbling rings
  • Figure 4 is a photographic representation of a cross section of a ring part typically obtained by the known slitting and tumbling processes
  • Figure 5 is a principle scheme illustrating the improvement effect in manufacturing of rings according to the invention.
  • Figure 6 illustrates a forming tool proposed by the invention, implicitly indicating the process proposed by the present invention
  • a push belt generally known per se, comprises an endless tensile means and a plurality of transverse elements, which are accommodated freely slidable along the longitudinal circumference of the tensile means.
  • the endless tensile means consists of one or more sets of mutually nested metal bands that are prepared from relatively thin -i.e. typically about 0.2 mm thick- metal rings 10 by means of a/o rolling, annealing, calibrating, hardening and nitriding processes.
  • the rings 10 themselves are often obtained by cutting, i.e. slitting from a tube-like base part 1 , or tube 1 for short that is usually made of sheet metal material -i.e.
  • FIG 1 a tube 1 is represented along which the circles 2 indicate radial positions of an essentially cylindrical and rotatable cutting tool 2 relative to the tube 1 during the cutting process.
  • the cutting tool 2 in fact has a fixed radial position, whereas the tube 1 is rotated with respect thereto.
  • a counter tool 3 provides a support for the tube 1 when the cutting tool 2 moves radially inward during the cutting process.
  • the tube is mounted on a rotatable holder, which is not represented. During the cutting, both the tube and the two knifes rotate, however only one of these elements is rotatably driven.
  • the arrows provide the relative rotational movement of the components.
  • radial position I the cutting tool 2 is positioned in contact with the outer surface of the tube 1.
  • the cutting tool 2 is in a initial cutting phase, at which the tube 1 , in this example, is rotated over about 90 degrees and at which the cutting tool 2 has cut up to about two thirds of the wall thickness of the tube 1 in radial direction.
  • the cutting tool 2 has cut over the entire wall thickness up to the inner surface of the tube 1 , at which it is rotated over about one- half of its circumference.
  • the initial cutting phase is thereby completed.
  • the cutting tool 2 causes a spiral-like cutting line S in the material of the tube 1 , of which line S two examples are provided in figure 1.
  • a ring 10 is fully separated from the tube 1 in a final cutting phase, wherein the cutting tool 2 is taken through the material of the tube 1 over the full circumference thereof, i.e. one full rotation of the tube 1 , whilst it is in the radial position III in which it partly projects beyond the inner surface of the tube 1.
  • Figure 2 is a photographic representation of a typical cross section of a part of a ring 10 including a lateral side face 11 thereof, which ring 10 is obtained along the above-described cutting process and includes a clearly recognisable burr 4 that is created as a consequence of such known process.
  • the ring ,10 is subsequently treated in a tumbling process also known per se, which process is schematically illustrated by figure 3 in a figurative cross-section of a tumbling machine.
  • a number of rings 10 are put into a vessel 50 with more or less cone-shaped tumbling stones 51, which vessel is made to shake w.r.t. the floor 52 as indicated by the arrows in figure 3.
  • the stones 51 impacting the rings 10 not only the burr 4 is removed but also the lateral side faces 11 of the ring 10 are shaped by a rounding-off of the edges thereof to a certain extent, which a/o depends on the intensity of the tumbling process.
  • Figure 4 is a photographic representation of a typical cross section of a part of a ring 10 including a lateral side face 11 thereof, which ring 10 is obtained along the above-described cutting and tumbling processes.
  • the general shape of the lateral side faces 11 after tumbling is essentially parabolic.
  • Figure 5 is a principle scheme illustrating the process flow for the separating of a ring 10 from a tube 1 of base material and subsequently shaping the lateral side faces 11 thereof to form a "shaped ring” in accordance with the invention and in comparison with the above process steps. It illustrates that the novel manufacturing process denoted as "ring forming process" is significantly simplified in that only one treatment instead of two is required.
  • a major advantage of the novel process is that the lesser-defined process of random tumbling is replace by a more defined one.
  • Figure 6 by way of a front elevation of a combined cutting and forming tool 20, denoted forming tool 20 for short, illustrates the principle of the novel manner of separating a ring 10 from a tube 1.
  • the front elevation shows a lower most cutting edge 30 of a base part 21 of the tool 20, which is preferably shaped very slightly concave.
  • This base part 21 serves as the cutting tool part 21 , which during use in a turning machine -depicted in figure 7- is moved in radial direction M through the material of the tube 1 to separate a ring 10 therefrom, as illustrated by step I in figure 6.
  • the moving direction M extends parallel to a central axis A of the tool 20.
  • the width of the cutting edge 30 is preferably as small as possible without compromising the strength of the tool 20, because at separating the ring 1 from the tube 1 the material 5 below the tool 20 is cut up by the cutting edge 30.
  • the base part 21 is provided with side walls 22, extending essentially straight, and square to the cutting edge 30, i.e. parallel to the central axis A.
  • the front elevation further shows an intermediate 23 part of the tool 20.
  • This intermediate part 23 serves as the shaping tool part 23, which during use in a turning machine is moved in axial direction X towards one of the lateral side faces 11 of the ring 10 and/or of the tube 1 until it engages the material thereof, thereby machining and shaping it towards a desired shape, as illustrated by step Il in figure 6.
  • the intermediate part 23 is provided with two laterally opening slots 24.
  • the shape of the slots 24 as seen in the front elevation determines the shape that will be provided to the lateral side faces 11 as a result of machining during which the ring 10 or tube is rotated, whereby the front edge 31 of each slot 24 sets forth a further cutting edge 31.
  • the slot 24 is provided with generally converging, i.e. inwardly tapered shape that is smoothly rounded where its lower edge 25 and its upper edge 25 merge.
  • Figure 7 illustrates the relevant parts of a typical kind of turning machine 40 used for moving and positioning the forming tool 20.
  • the tube 1 is clamped to a rotating head 41 of an industrial machine by means of a clamp 42 in a manner that is known per se.
  • a support 43 is used at inserting the tube 1 , which support 43 rotates with the tube 1 and provides a clamping mechanism for clamping the rings 10 to be separated from the tube 1 , as well as, preferably, an axial end of the tube 1 from the inside.
  • the support 43 is provided with one or more circumferential grooves 44, each for allowing a tool 20 to penetrate through the tube 1.
  • a groove 44 is dimensioned somewhat wider than the forming tool 20, so as to allow the tool 20 to move axially for shaping the lateral side faces 11 once the ring 10 has been cut off.
  • the turning machine 40 further comprises a pusher-element 45 for removing the ring once it is formed, i.e. after it has been separated from the tube 1 and its lateral side faces 11 have subsequently been shaped.
  • the forming tool 20 is provided in a holder 46 of the machine 40 that is vertically downward movable, or put alternatively in radially inward direction with respect to the tube 1 , to engage the material of the tube 1 by the cutting edge 30 of its base part 21 and separate a ring 10 therefrom in the step I of the ring forming process according to the invention.
  • step Il of the holder 46 is moved downward even further so that the slots 24 of the forming tool 20 are positioned essentially in the same horizontal plane as a lateral side face 11 of the tube 1 or ring 10. Subsequently, the holder 46 is moved horizontally, i.e. axially with respect to the tube 1 or ring 10, so that the tool 20 engages the relevant side face 11 by the further cutting edge 31 of the relevant slot 24. As mentioned, during the two steps of the ring forming process both the tube 1 and any rings 10 separated therefrom are rotated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turning (AREA)

Abstract

Procédé de formation d'une bague (10), sous forme finale, à mettre en oeuvre dans une courroie de poussée dotée d'un moyen de tension sans fin, composé d'un certain nombre de bagues (10), et une pluralité d'éléments transversaux montés sur le moyen de tension sans fin. La bague (10) est séparée d'une tube métallique (10) serré et tournant dans un tour (40). La surface latérale (11) d'une telle bague (10) est ainsi façonnée. Lors d'un tel procédé, dans la première étape (étape I), un outil de forme (20) du tour (40) est plaqué dans le sens radial par rapport au tube (1), la matière du tube (5) est coupée et la bague (10) est séparée, l'outil de forme (20) est doté d'un premier bord de coupe (30). Lors d'une seconde étape de traitement (étape II), l'outil de forme (20) est plaqué dans le sens axial par rapport à la bague (10), la face latérale (11) de la bague (10) est façonnée, l'outil de forme (20) est doté d'un autre bord de coupe (31).
PCT/NL2004/000461 2004-06-30 2004-06-30 Procede de formation d'une bague, outil de forme et machine a former utilises dans ce procede et courroie de poussee dotee d'une telle bague Ceased WO2006004391A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/NL2004/000461 WO2006004391A1 (fr) 2004-06-30 2004-06-30 Procede de formation d'une bague, outil de forme et machine a former utilises dans ce procede et courroie de poussee dotee d'une telle bague
JP2007519140A JP4857266B2 (ja) 2004-06-30 2004-06-30 リングを形成する工程

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NL2004/000461 WO2006004391A1 (fr) 2004-06-30 2004-06-30 Procede de formation d'une bague, outil de forme et machine a former utilises dans ce procede et courroie de poussee dotee d'une telle bague

Publications (1)

Publication Number Publication Date
WO2006004391A1 true WO2006004391A1 (fr) 2006-01-12

Family

ID=34958151

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2004/000461 Ceased WO2006004391A1 (fr) 2004-06-30 2004-06-30 Procede de formation d'une bague, outil de forme et machine a former utilises dans ce procede et courroie de poussee dotee d'une telle bague

Country Status (2)

Country Link
JP (1) JP4857266B2 (fr)
WO (1) WO2006004391A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1939488A1 (fr) * 2006-12-28 2008-07-02 Robert Bosch Gmbh Méthode de fabrication d'une bande métallique, bande métallique sans fin et courroie d'entrainement dans laquelle la bande métallique est utilisée
CN119388054A (zh) * 2024-10-16 2025-02-07 东莞市添丰盛家具配件有限公司 一种椅脚边管加工方法及组合椅脚

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB828596A (en) * 1958-04-02 1960-02-17 Etna Machine Company Mechanism for end cropping and producing test samples from welded seam tubing
US2984493A (en) * 1957-05-21 1961-05-16 Th Calow & Co Maschinenfabrik Pipe clamping fixture
US3563119A (en) * 1969-04-03 1971-02-16 Fairfield Machine Co Inc Method for cutting tube members and finishing selected of the cut tube edges at a single station
GB1576284A (en) * 1976-07-10 1980-10-08 Freudenberg Carl Collet chucks
GB2176140A (en) * 1985-04-27 1986-12-17 Reika Werk Gmbh Maschf A machine for cutting and chamfering pipes
US4698050A (en) * 1985-05-18 1987-10-06 Honda Giken Kogyo, K.K. Laminated metallic belt for torque transmission device and method of manufacture thereof
EP0425994A2 (fr) * 1989-10-31 1991-05-08 MASCHINENFABRIK REIKA-WERK GmbH Méthode et machine à tronçonner des tubes et à chamfreiner les extrémités ainsi obtenues
US5471900A (en) * 1994-04-25 1995-12-05 Cincinnati Milacron Inc. Method for turning a workpiece
DE19526900A1 (de) * 1995-07-22 1997-01-23 Univ Dresden Tech Verfahren zur kombinierten spanenden und umformenden Fertigung von Ringen und Maschinen hierzu
EP0888840A1 (fr) * 1997-06-12 1999-01-07 Star Micronics Co., Ltd. Procédé de décolletage et tour automatique
DE19844858C1 (de) * 1998-09-30 1999-09-16 Karl Heinz Arnold Gmbh Wendeschneidplatte
EP1055738A2 (fr) * 1999-05-28 2000-11-29 Honda Giken Kogyo Kabushiki Kaisha Procédé de fabrication des anneaux laminés et dispositif de traitment thermique utilisé dans ce procédé

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60242905A (ja) * 1984-05-17 1985-12-02 Mitsubishi Heavy Ind Ltd 管端部切断時の残材保持装置
JPH01199712A (ja) * 1988-02-02 1989-08-11 Sumitomo Heavy Ind Ltd ミーリング式パイプ切断装置
JPH05318009A (ja) * 1992-05-14 1993-12-03 Seiko Instr Inc 装飾部品の製造方法

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984493A (en) * 1957-05-21 1961-05-16 Th Calow & Co Maschinenfabrik Pipe clamping fixture
GB828596A (en) * 1958-04-02 1960-02-17 Etna Machine Company Mechanism for end cropping and producing test samples from welded seam tubing
US3563119A (en) * 1969-04-03 1971-02-16 Fairfield Machine Co Inc Method for cutting tube members and finishing selected of the cut tube edges at a single station
GB1576284A (en) * 1976-07-10 1980-10-08 Freudenberg Carl Collet chucks
GB2176140A (en) * 1985-04-27 1986-12-17 Reika Werk Gmbh Maschf A machine for cutting and chamfering pipes
US4698050A (en) * 1985-05-18 1987-10-06 Honda Giken Kogyo, K.K. Laminated metallic belt for torque transmission device and method of manufacture thereof
EP0425994A2 (fr) * 1989-10-31 1991-05-08 MASCHINENFABRIK REIKA-WERK GmbH Méthode et machine à tronçonner des tubes et à chamfreiner les extrémités ainsi obtenues
US5471900A (en) * 1994-04-25 1995-12-05 Cincinnati Milacron Inc. Method for turning a workpiece
DE19526900A1 (de) * 1995-07-22 1997-01-23 Univ Dresden Tech Verfahren zur kombinierten spanenden und umformenden Fertigung von Ringen und Maschinen hierzu
EP0888840A1 (fr) * 1997-06-12 1999-01-07 Star Micronics Co., Ltd. Procédé de décolletage et tour automatique
DE19844858C1 (de) * 1998-09-30 1999-09-16 Karl Heinz Arnold Gmbh Wendeschneidplatte
EP1055738A2 (fr) * 1999-05-28 2000-11-29 Honda Giken Kogyo Kabushiki Kaisha Procédé de fabrication des anneaux laminés et dispositif de traitment thermique utilisé dans ce procédé

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1939488A1 (fr) * 2006-12-28 2008-07-02 Robert Bosch Gmbh Méthode de fabrication d'une bande métallique, bande métallique sans fin et courroie d'entrainement dans laquelle la bande métallique est utilisée
WO2008080910A1 (fr) * 2006-12-28 2008-07-10 Robert Bosch Gmbh Procédé de traitement d'une bande métallique, bande métallique continue et courroie de poussée dans laquelle la bande métallique est utilisée
CN119388054A (zh) * 2024-10-16 2025-02-07 东莞市添丰盛家具配件有限公司 一种椅脚边管加工方法及组合椅脚

Also Published As

Publication number Publication date
JP2008504973A (ja) 2008-02-21
JP4857266B2 (ja) 2012-01-18

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