EP1017518A1 - Dispositif de fluotournage et procede pour la fabrication d'engrenages a deux dentures interieures - Google Patents

Dispositif de fluotournage et procede pour la fabrication d'engrenages a deux dentures interieures

Info

Publication number
EP1017518A1
EP1017518A1 EP98925614A EP98925614A EP1017518A1 EP 1017518 A1 EP1017518 A1 EP 1017518A1 EP 98925614 A EP98925614 A EP 98925614A EP 98925614 A EP98925614 A EP 98925614A EP 1017518 A1 EP1017518 A1 EP 1017518A1
Authority
EP
European Patent Office
Prior art keywords
molding tool
mold
workpiece
ring gear
toothing
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
EP98925614A
Other languages
German (de)
English (en)
Other versions
EP1017518B1 (fr
Inventor
Karl Heinz PÜTZ
Bernd Stein
Heinz Steinhauer
Wilhelm Zimmermann
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.)
Dynaform GmbH
Original Assignee
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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 Dynamit Nobel AG, Dynamit Nobel GmbH Explosivstoff und Systemtechnik filed Critical Dynamit Nobel AG
Publication of EP1017518A1 publication Critical patent/EP1017518A1/fr
Application granted granted Critical
Publication of EP1017518B1 publication Critical patent/EP1017518B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/187—Rolling helical or rectilinear grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
    • B21H5/025—Internally geared wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/02—Making articles shaped as bodies of revolution discs; disc wheels
    • B21H1/04—Making articles shaped as bodies of revolution discs; disc wheels with rim, e.g. railways wheels or pulleys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/08—Making helical bodies or bodies having parts of helical shape internal screw-threads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • Y10T29/49471—Roll forming

Definitions

  • the invention relates to a pressure rolling device and a method for producing ring gears with two internal toothings arranged axially one behind the other, at least one of which is a helical toothing.
  • a helical tooth is also to be understood as a thread.
  • Ring gears with internal gears made of steel alloys and other metallic materials are used in particular for power transmission in driven wheels of, for example, trucks or tractors.
  • Ring gears of this type have internal gears that are accessible from the outside at their open ends at the front.
  • the two internal gears can have a different diameter if the ring gear is used, for example, in a transmission.
  • the ring gear can be a spur gear in which the teeth
  • ERS ⁇ ZBLA ⁇ (RULE 26) run parallel to the axis of rotation, or have a helical toothing or a thread.
  • WO 96/20050 describes a process for the production of internally toothed parts, in which ring gears with two internal toothings are produced by spinning rollers pressing the workpiece over molding tools. However, only ring gears with straight toothing on both sides can be produced.
  • the invention has for its object to improve the production of internally toothed parts in such a way that parts with two internal toothings, at least one of which is a helical toothing, are easy to manufacture.
  • the invention proposes a pressure rolling device which has a first and a second molding tool, each with external teeth, pressure rollers for pressing a workpiece seated on the interconnected molding tools, and a holding means which secures the workpiece against rotation during the pressure rolling of the first internal teeth on the first molding tool, having.
  • At least one of the molding tools has helical teeth, in which the individual teeth run in the manner of a thread at an angle to the longitudinal axis of the molding tool.
  • At least one scraper element is provided, which pushes the finished ring gear off the molding tool or tools with helical teeth with relative rotation between the molding tool and the ring gear.
  • ERS ⁇ ZBL ⁇ T (RULE 26)
  • the two molds are non-rotatably coupled. After manufacture, this rotationally fixed coupling is released, so that the one molding tool rotates together with the ring gear, while the ring gear is released from the other molding tool with the aid of the stripping element. It is thereby achieved that one-piece ring gears with two internal gears, at least one of which is helical, can be produced in one operation, ie without having to reclamp the workpiece.
  • the holding means can be a displaceable sleeve surrounding the second molding tool.
  • the sleeve presses the workpiece against the first mold while the first internal gear is being formed.
  • the sleeve holds the workpiece on the molds and at the same time secures it against twisting.
  • the sleeve is then withdrawn in order to be able to form the second internal toothing.
  • the workpiece is then held on the mold by the first toothing.
  • the holding means can also be an embossing element of the first molding tool, e.g. a spur toothing.
  • a spur toothing At the beginning of the forming process, the workpiece is pressed onto this spur toothing by the pressure of the pressure rollers, so that rotation of the workpiece is prevented without further holding means.
  • one of the molding tools protrudes from a tool holder, which is displaceably guided in the other molding tool and can act on the latter for rotational driving.
  • the two molds are therefore freely accessible from one side, so that the workpiece is simple
  • SPARE BLADE (RULE 26) can be pushed onto the two molds and the finished ring gear can simply be pushed off the two molds. In this way, ring gears can also be produced that have a shoulder behind a toothing that has a smaller diameter than the toothing, because the ring gear is stripped off by the molding tools. The mold does not have to be pulled out through the smaller diameter heel.
  • the end of the second mold facing the first mold has a smaller diameter than the external toothing of the second mold.
  • Fig. 4 shows a second embodiment.
  • the pressure-rolling device 1 has a first molding tool 2 in the form of a hollow mandrel. This is rotatably attached to the shaft of a machine. The machine is not shown in the figures; it is located on the left next to the pressure rolling device 1.
  • the molding tool 2 has helical teeth 3 at its end facing away from the machine.
  • a second mold 4 runs in the central cavity of the first mold 2 and protrudes from an end opening of the first mold 2. It is attached to a shaft-side tool holder 5, which is located in the central cavity and can be rotated and axially moved by the machine.
  • the displaceable tool holder 5 engages with a conical surface 7 in a corresponding inner cone of the first molding tool 2 for rotary driving.
  • a hollow mandrel 8 operated by the machine is pressed against the first molding tool 2.
  • the second molding tool 4 has parallel teeth 6 at its projecting end, which has a smaller diameter than the helical teeth 3.
  • the two molding tools 2, 4 consist of materials containing chromium or molybdenum, which are tempered and surface-hardened.
  • the workpiece 9 to be formed into a ring gear is already pre-shaped such that each
  • ERSATZBLA ⁇ RULE 26 a short tubular circumferential region 9a or 9b is located above the start of the toothing 3 or 6. These tubular areas 9a, 9b have a greater wall thickness than the ring gear to be produced, since the tubular areas 9a, 9b are pressed to a greater length and a smaller wall thickness.
  • the radial region 9c of the workpiece 9 connecting the two tube regions 9a, 9b already has the desired wall thickness, since it is not subject to any deformation.
  • Pressure rollers 10 made of hard metal or HSS steel form the workpiece 9 on the shaping tools 2, 4.
  • the pressure rollers 10 are arranged in a radial plane and rotate about their central axis 11 with simultaneous feed.
  • the pressure rollers 10 are pressed against the workpiece 9 with a radial force.
  • the pressure applied in this way can be, for example,> 35 t. So that the pressure rollers 10 process the entire circumference of the workpiece 9 uniformly, a rotary relative movement between the workpiece 9 and the pressure rollers 10 must take place.
  • either the shaping tools 2, 4 with the workpiece 9 held thereon can be rotated, or the pressure rollers 10 can be moved around the workpiece 9.
  • a tailstock-side mandrel 12 of the machine has a spring assembly 13 which is arranged around a centering pin 12a of the tailstock-side mandrel 12.
  • the centering pin 12 engages in an end centering opening 14 of the second mold 4.
  • the mandrel 12 is axially movable. This structure forms an ejection device 15 which can release the tool holder 5 from the conical pressing with the first mold 2.
  • ERS ⁇ ZBL ⁇ T (RULE 26) tion 6 of the second mold 4 are surrounded by a displaceable holding sleeve 16 which holds the workpiece 9 on the molds 2.4 rotatably.
  • the workpiece 9 is pushed onto the two molds 2, 4 from the tailstock side, the ejection device 15 and the holding sleeve 16 being retracted, that is to say separated from the second mold 4.
  • the holding sleeve 16 is then moved forward to fix the workpiece 9. It presses the workpiece 9 against the end face of the first molding tool 2.
  • the hollow mandrel 8 on the machine side is advanced until the spring assembly 13 bears against the mandrel 12 mandrel 12, which has been moved into position, in a compressed state. This has the effect that the tool holder 5 enters into a conical clamping with the first mold 2, which leads to a rotationally fixed coupling of the two molds 2 and 4.
  • the spring assembly 13 of the ejection device 15 is pressurized.
  • the first molding tool 2, the tool holder 5 with the second molding tool 4, the hollow mandrel 8, the ejection device 15 and the holding sleeve 16 thus form a rotating unit together with the workpiece 9.
  • the pressure rollers 10 are now moved up to the tubular region 9a of the workpiece 9, which surrounds the beginning of the helical toothing 3 of the first molding tool. Each pressure roller 10 rotates about its axis 11. The pressure rollers 10 are moved together towards the machine, whereby they push the material of the workpiece 9 in front of them and at the same time press into the helical teeth 3 of the first molding tool 2, so that in the workpiece 9 a Ent toothing ent
  • SPARE BLADE (RULE 26) stands.
  • a pressure roller 10a in the end position is shown at the bottom in FIG. 1, as well as the completed first internal toothing of the workpiece 9.
  • Figures 1 and 2 each show two processing steps. In the upper half of the figures, the pressure roller 10 and the workpiece 9 are shown at the beginning of the forming process and in the lower half of each figure at the end of the forming process.
  • a stripping sleeve 18, which surrounds the first shaping tool 2 is pressed against the end face of the ring gear 17.
  • the scraper sleeve 18 has an axial bearing 19 on its end face pressing against the ring gear 17, so that translatory, but no rotational, movements are transmitted.
  • the stripping sleeve 18 is pressed against the end face of the ring gear 17, so that it is pushed off the first mold 2 in a rotating manner.
  • the ring gear 17 slides in the direction of the tailstock and is thus rotated by the first molding tool 42.
  • the loosened ring gear 17 ′ which is shown here in dashed lines, can be removed from the pressure rolling device 1 as soon as the ejection device 15 is moved to the tailstock side and is thus separated from the second molding tool 4.
  • the second toothing 6 is also a helical toothing
  • a second scraper sleeve is provided which runs on the ejection device 15 in order to detach the ring gear 17 from the second toothing in the same way.
  • the first molding tool 102 also has helical teeth 3. However, it is not designed as a hollow mandrel, but rather as a tube with an end-side central opening into which the second mold 104 engages.
  • the second molding tool 104 has a parallel toothing 6 and is firmly connected to the tailstock-side tool mandrel 12.
  • the tailstock-side tool mandrel with the second molding tool 104 is first pulled out of the first molding tool 102 and the workpiece is positioned on the first molding tool 102 and then the second molding tool 104 through the workpiece into the opening of the first molding tool 102 inserted.
  • the two molding tools 102, 104 can be coupled in a rotationally fixed manner by pressing the two molding tools 102, 104 together or, for example, by means of securing pawls (not shown).
  • the first internal toothing is then shaped as described above.
  • a holding sleeve is not absolutely necessary, since the first molding tool 102 has an end toothing 116 against which the workpiece is pressed by the pressure rollers at the beginning of the forming process, so that the workpiece and the first molding tool 102 enter into a rotationally fixed connection. In addition, however, can still a holding sleeve may be provided.
  • the second internal toothing is also shaped as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Gears, Cams (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Forging (AREA)

Abstract

L'invention concerne un dispositif de fluotournage (1; 101) pour la fabrication d'un engrenage (17) à dentures intérieures dont au moins une est une denture hélicoïdale. La pièce (9) est maintenue par un organe de retenue (16; 116) pendant le formage de la première denture intérieure. Pendant le formage de la deuxième denture intérieure, la pièce (9) est maintenue sur le premier outil de formage (2; 102) par la première denture. Après finissage de l'engrenage (17), le blocage en rotation entre les deux outils de formage (2, 4; 102, 104) est desserré. L'engrenage (17) est désolidarisé du ou des outils de formage à l'aide d'au moins un organe d'enlèvement (18).
EP98925614A 1997-05-28 1998-05-14 Dispositif de fluotournage et procede pour la fabrication d'engrenages a deux dentures interieures Expired - Lifetime EP1017518B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19722359 1997-05-28
DE19722359A DE19722359A1 (de) 1997-05-28 1997-05-28 Drückwalzvorrichtung und Verfahren zur Herstellung von Hohlrädern mit zwei Innenverzahnungen
PCT/EP1998/002922 WO1998053934A1 (fr) 1997-05-28 1998-05-14 Dispositif de fluotournage et procede pour la fabrication d'engrenages a deux dentures interieures

Publications (2)

Publication Number Publication Date
EP1017518A1 true EP1017518A1 (fr) 2000-07-12
EP1017518B1 EP1017518B1 (fr) 2002-03-27

Family

ID=7830762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98925614A Expired - Lifetime EP1017518B1 (fr) 1997-05-28 1998-05-14 Dispositif de fluotournage et procede pour la fabrication d'engrenages a deux dentures interieures

Country Status (6)

Country Link
US (1) US6253589B1 (fr)
EP (1) EP1017518B1 (fr)
JP (1) JP2002500564A (fr)
AT (1) ATE214987T1 (fr)
DE (2) DE19722359A1 (fr)
WO (1) WO1998053934A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19810265A1 (de) * 1998-03-10 1999-09-16 Dynamit Nobel Ag Verfahren zur Herstellung einer metallischen Zylinderlaufbuchse
JP4568962B2 (ja) * 1999-06-30 2010-10-27 アイシン・エィ・ダブリュ株式会社 クラッチのドラム及び内歯部材の成形装置
EP1285183B1 (fr) * 2000-05-27 2004-08-04 Alpha Getriebebau GmbH Engrenage planetaire a jeu tres faible
JP4069735B2 (ja) * 2002-02-21 2008-04-02 株式会社ジェイテクト 内歯車の成形方法
US7191626B2 (en) * 2005-06-07 2007-03-20 Profiroll Technologies Gmbh Method for producing an inner contour with an internal arbor acting on the inside wall of a workpiece
US20080105021A1 (en) * 2006-11-07 2008-05-08 Yahya Hodjat Method of forming a gear
US7487656B2 (en) * 2007-03-30 2009-02-10 The Gates Corporation Method of spinning multiple parts
WO2010012457A1 (fr) * 2008-07-29 2010-02-04 Repkon Machine And Tool Industry & Trade Ltd. Dispositif et procédé de fabrication ou d'usinage de pièces à partir d'une préforme, en particulier pour le formage de profilés intérieurs ou de dentures intérieures
ES2341683T3 (es) * 2008-05-26 2010-06-24 REPKON MACHINE AND TOOL INDUSTRY & TRADE LTD. Procedimiento para la fabricacion de piezas de trabajo y maquina de laminacion a presion para ello.
US20100083502A1 (en) * 2008-10-03 2010-04-08 Joseph Szuba Method of forming a one piece component
DE102012105958A1 (de) 2012-07-04 2014-01-23 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung eines Verbindungselements zur Übertragung von Drehbewegungen
US9393604B2 (en) * 2012-07-05 2016-07-19 Magna Powertrain Inc. Helical spline forming
US10433965B2 (en) 2015-06-17 2019-10-08 Joint Purification Systems Llc Total joint replacement infection control devices and methods
EP3159068B1 (fr) * 2015-10-20 2018-02-14 Leifeld Metal Spinning AG Banc de formage de pression/d'emboutissage et procede de pression/d'emboutissage
DE102022121959A1 (de) 2022-08-31 2024-02-29 Audi Aktiengesellschaft Verfahren zur Herstellung einer Gelenkwellenanordnung sowie eine Gelenkwellenanordnung

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Publication number Priority date Publication date Assignee Title
AT296118B (de) * 1969-02-27 1972-01-25 Soerensen & Koester Leichtmetallhülse mit schraubenförmigen Innenzügen, sowie Verfahren und Vorrichtung zur Herstellung derselben
JPS63149034A (ja) * 1986-12-15 1988-06-21 Hitachi Ltd インターナルギヤの製造方法
DE4446919A1 (de) * 1994-12-28 1996-07-04 Dynamit Nobel Ag Verfahren zur Herstellung von innenverzahnten Teilen

Non-Patent Citations (1)

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Title
See references of WO9853934A1 *

Also Published As

Publication number Publication date
EP1017518B1 (fr) 2002-03-27
DE19722359A1 (de) 1998-12-03
ATE214987T1 (de) 2002-04-15
JP2002500564A (ja) 2002-01-08
DE59803553D1 (de) 2002-05-02
US6253589B1 (en) 2001-07-03
WO1998053934A1 (fr) 1998-12-03

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