WO2016206878A1 - Poulie à courroie et disposition de la poulie à courroie sur un écrou de broche - Google Patents

Poulie à courroie et disposition de la poulie à courroie sur un écrou de broche Download PDF

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Publication number
WO2016206878A1
WO2016206878A1 PCT/EP2016/061519 EP2016061519W WO2016206878A1 WO 2016206878 A1 WO2016206878 A1 WO 2016206878A1 EP 2016061519 W EP2016061519 W EP 2016061519W WO 2016206878 A1 WO2016206878 A1 WO 2016206878A1
Authority
WO
WIPO (PCT)
Prior art keywords
pulley
spindle nut
flange
belt wheel
ring gear
Prior art date
Application number
PCT/EP2016/061519
Other languages
German (de)
English (en)
Inventor
Carsten Stehr
Original Assignee
Zf Friedrichshafen Ag
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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2016206878A1 publication Critical patent/WO2016206878A1/fr

Links

Classifications

    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F16H55/171—Toothed belt pulleys
    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2081—Parallel arrangement of drive motor to screw axis
    • 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
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2096—Arrangements for driving the actuator using endless flexible members
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H2055/363—Pulleys with special means or properties for lateral tracking of the flexible members running on the pulley, e.g. with crowning to keep a belt on track

Definitions

  • the invention relates to a pulley for a toothed belt, comprising a hub with a mounting hole and a ring gear with a peripheral toothing.
  • the invention also relates to an arrangement of the pulley on a spindle nut of a spindle drive.
  • Pulleys also called pulleys, are known as belt or timing belt components.
  • the pulley In the case of a toothed belt drive, the pulley has a ring gear with a special circumferential toothing, which corresponds to the tooth profile of the toothed belt. For reasons of noise, this is
  • the sprocket has lateral edges, so that the toothed belt is guided on the pulley.
  • one of the two boundary edges is connected to the pulley after the production of the toothing, which was effected, for example, by a welded joint.
  • a pulley mounted on a drive shaft by a press fit this is the hub of the pulley heated in order to increase the diameter, so that it can then be joined to the shaft.
  • the belt pulley can be produced from a sintered metal and joined with a flanged wheel by deformation.
  • the advantage of the sintered metal is, inter alia, in the manufacturing process, which allows any shapes, including the production of a circumferential toothing for a toothed belt.
  • the sintered metal has a relatively low specific gravity.
  • the connection with a flange, which is preferably made of a sheet or sheet, is carried out by a transformation of the sintered metal. Such a joint connection is - especially in comparison to the known welded joint - very inexpensive and easy to produce.
  • the flanged wheel is formed annularly and fixed frontally on the sprocket.
  • the flange can fulfill their function, namely the guidance of the toothed belt on the sprocket.
  • a circumferential, axially projecting web is arranged on the sprocket, on which the annular flange is slidable.
  • the flanged wheel on a circumferential inner edge, around which the sintered material of the web is formed, for example by rolling or caulking.
  • the sintered material is thus plastically deformed and forms an edge of an annular groove in which the flange is held.
  • a non-positive and positive connection between the flange and the sprocket respectively the pulley is made.
  • a sintered metal with the designation Sint-D32 or Sint-D39 according to DIN 30910 is preferably provided for the sintering net of the belt wheel. This material meets in particular the requirement of sufficient ductility and ductility.
  • the pulley is arranged on the spindle nut of a spindle drive and connected by a press fit with the spindle nut.
  • a frictional or non-positive connection between the pulley and the spindle nut for transmitting a torque is produced.
  • the spindle nut has a cylindrical outer surface with an outer diameter and the mounting hole of the hub undersized with respect to the outer diameter; by applying an axial force the pulley is pressed onto the spindle nut. This results in a simplified joining process, which does not require thermal treatment of the
  • the aforementioned pulley or the aforementioned arrangement of the pulley on a spindle nut of a spindle drive is preferably used in a servo motor, which is used in a rear axle steering application.
  • the aforementioned advantages are also in the rear axle steering advantage, as this is thus more cost effective and easier to produce.
  • Fig. 4 shows a detail in the region of the flanged wheel before deformation
  • Fig. 4a shows the detail in the region of the flanged wheel after deformation.
  • Fig. 1 shows in an axial section a pulley 1, which has a hub 2 with a mounting hole 3 and a ring gear 4 with a circumferential toothing 5.
  • the hub 2 and the ring gear 4 are by a support plate. 6
  • the ring gear 4 has on its left in the drawing arranged side on a radially outwardly projecting, circumferential edge 4a, which is integrally formed on the ring gear 4 respectively to the pulley 1.
  • the pulley 1 is made of a sintered metal, preferably made of a material called Sint-D32 or Sint-D39 in one piece.
  • the attachment is made by pressing the pulley 1 in the axial direction of the spindle nut 8, the one
  • the mounting hole 3 of the pulley 1 has an undersize relative to the outer diameter 8a, so that an overlap of both diameters results.
  • the selected sintered material is able to absorb the stresses occurring in the hub 2 during and after pressing.
  • Fig. 2 shows the pulley 1 in a view in the axial direction
  • Fig. 3 shows the pulley 1 in a view in the radial direction
  • the peripheral toothing 5, which is formed as a helical toothing, and the protruding edge 4a are clearly visible.
  • annular flanged disk 7 On the right side in Fig. 1 arranged on the front side of the ring gear 4 is an annular flanged disk 7 is arranged, which by
  • Forming of the sintered material is added to the ring gear 4.
  • the sprocket 4 on the front side a circumferential, axially projecting annular web 4b, on soft the flanged wheel 7 is placed.
  • Fig. 4 shows a detail X of Fig. 1 in an enlarged view.
  • the web 4b is slightly conical on its outer circumference, so that the flange 7, which has an inner edge 7a, can be easily mounted and centered with the ring gear 4.
  • FIG. 4a shows the finished connection between the ring gear 4 and the flanged disk 7, wherein the web 4b (FIG. 4) is folded around the inner edge 7a by plastic deformation of the sintered material.
  • This type of deformation can be achieved by rolling by means of a roller tool or caulking.
  • the flange 7 is non-positively (in the circumferential direction) and positively connected (in the axial direction) with the ring gear 4, ie the pulley 1.
  • the selected sintered material has insufficient ductility to allow this deformation and to keep the flange 7 permanently on the pulley 1.

Abstract

L'invention concerne une poulie à courroie, destinée à une transmission à courroie dentée, comportant un moyeu (2) pourvu d'un perçage de fixation (3) et d'une couronne dentée (4). Selon l'invention, la poulie à courroie (1) est fabriquée à partir d'un métal fritté et est assemblée avec une poulie à rebord (7) par formage.
PCT/EP2016/061519 2015-06-24 2016-05-23 Poulie à courroie et disposition de la poulie à courroie sur un écrou de broche WO2016206878A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015211657.3 2015-06-24
DE102015211657.3A DE102015211657B3 (de) 2015-06-24 2015-06-24 Riemenrad und Anordnung des Riemenrades auf einer Spindelmutter

Publications (1)

Publication Number Publication Date
WO2016206878A1 true WO2016206878A1 (fr) 2016-12-29

Family

ID=55975028

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/061519 WO2016206878A1 (fr) 2015-06-24 2016-05-23 Poulie à courroie et disposition de la poulie à courroie sur un écrou de broche

Country Status (2)

Country Link
DE (1) DE102015211657B3 (fr)
WO (1) WO2016206878A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108799459A (zh) * 2018-08-13 2018-11-13 广东盈峰材料技术股份有限公司 一种粉末冶金的皮带轮结构以及制造方法
CN110090962A (zh) * 2018-01-31 2019-08-06 米巴精密零部件（中国）有限公司 用于制造同步毂的方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018201630B4 (de) 2018-02-02 2023-01-19 Zf Friedrichshafen Ag Riemenrad für einen Zahnriementrieb einer steer-by-wire-Lenkung und Verfahren zur Herstellung des Riemenrades sowie Verwendung des Riemenrades
DE102019134153A1 (de) 2019-12-12 2021-06-17 Gkn Sinter Metals Engineering Gmbh Sinterteil und Verfahren zu dessen Herstellung
DE102019134155A1 (de) 2019-12-12 2021-06-17 Gkn Sinter Metals Engineering Gmbh Verfahren zur Herstellung eines Sinterteils

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010026727A1 (en) * 2000-03-29 2001-10-04 Isamu Okabe Caulking roller and sintered flanged pulley caulked by the caulking roller
US20110220432A1 (en) * 2010-03-15 2011-09-15 Trw Automotive U.S. Llc Electric power steering assembly
DE102010054134B3 (de) * 2010-12-10 2012-04-12 Thyssenkrupp Presta Ag Kugelgewindetrieb

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014206934B4 (de) * 2014-04-10 2022-05-12 Zf Friedrichshafen Ag Stellmotor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010026727A1 (en) * 2000-03-29 2001-10-04 Isamu Okabe Caulking roller and sintered flanged pulley caulked by the caulking roller
US20110220432A1 (en) * 2010-03-15 2011-09-15 Trw Automotive U.S. Llc Electric power steering assembly
DE102010054134B3 (de) * 2010-12-10 2012-04-12 Thyssenkrupp Presta Ag Kugelgewindetrieb

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110090962A (zh) * 2018-01-31 2019-08-06 米巴精密零部件（中国）有限公司 用于制造同步毂的方法
CN108799459A (zh) * 2018-08-13 2018-11-13 广东盈峰材料技术股份有限公司 一种粉末冶金的皮带轮结构以及制造方法

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