US20050126240A1 - Method for the production of an internal geared wheel for a planetary carrier - Google Patents

Method for the production of an internal geared wheel for a planetary carrier Download PDF

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Publication number
US20050126240A1
US20050126240A1 US10/506,650 US50665004A US2005126240A1 US 20050126240 A1 US20050126240 A1 US 20050126240A1 US 50665004 A US50665004 A US 50665004A US 2005126240 A1 US2005126240 A1 US 2005126240A1
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US
United States
Prior art keywords
sheet metal
metal strip
additional elements
tooth profile
elements
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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.)
Abandoned
Application number
US10/506,650
Inventor
Hartwig Waldert
Reinhard Kick-Rodenbucher
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IHO Holding GmbH and Co KG
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to INA-SCHAEFFLER KG reassignment INA-SCHAEFFLER KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KICK-RODENBUCHER, REINHARD, WALDERT, HARTWIG
Publication of US20050126240A1 publication Critical patent/US20050126240A1/en
Abandoned legal-status Critical Current

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    • 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
    • B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
    • 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
    • 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
    • F16H2055/176—Ring gears with inner teeth

Definitions

  • the invention concerns a method of making a rotationally symmetric body, particularly an annulus for a planet gear carrier, said annulus comprising a tooth profile and/or additional elements, and said method being a non-cutting shaping method.
  • the object of the invention is therefore to propose a method of making a rotationally symmetric body, particularly an annulus for a planet gear carrier, that is based on shaping without chip removal and thus eliminates the aforesaid drawbacks and permits an economic fabrication.
  • the invention achieves the above object by a method comprising: working the tooth profile and/or the additional elements into a sheet metal strip, cutting the sheet metal strip into desired lengths before or after working in the tooth profile and/or the additional elements, bending round the sheet metal strip to form a rotationally symmetric body and fixing the ends of the sheet metal strip to each other.
  • the tooth profile and/or the additional elements are made without chip removal by rolling, stamping or forming. These are low-cost fabrication methods that, at the same time, provide adequate precision.
  • the rolling, stamping or forming tool so that, after the bending of the sheet metal strip, the tooth profile and/or the additional elements have the desired profile shape and/or the additional elements are in the intended position.
  • the flanks must have a larger or a smaller inclination on the straight sheet metal strip during manufacture.
  • the ends of the sheet metal strip can be joined to each other by welding.
  • the elements are configured as hook-shaped and/or T-shaped projections on one end of the sheet metal strip and as corresponding recesses on the other end (clinch connection).
  • a clinch connection is adequate. It can also be realized in an economic manner because it can be made at the same time as the stamping or shaping of the sheet metal strip or when cutting this into desired lengths.
  • the ends of the sheet metal strip can be additionally welded together, for example in the intermediate spaces of the hook-shaped and/or T-shaped projections and the corresponding recesses.
  • the additional elements may be projections or recesses provided on the sides of the sheet metal strip that, in the finished state of the annulus, are oriented, for example, parallel to the central axis. With the help of these projections and recesses, such an annulus can be located or fixed on a further component, for example, a planet gear carrier.
  • FIG. 1 a perspective view of a finished annulus manufactured according to the method of the invention, for a planet gear carrier,
  • FIG. 2 a detail of a larger sheet metal strip comprising a worked-in tooth profile and additional elements, in a side view, and
  • FIG. 3 a perspective illustration of a sheet metal strip corresponding to FIG. 2 .
  • annulus of a planet gear carrier where shown, is identified at 1 and comprises a tooth profile 2 on its inner side.
  • the tooth profile is configured as a helical gearing.
  • the annulus further comprises additional elements 3 in the form of projections and recesses on one side. With the help of these additional elements, the annulus can be located or fixed on another machine element such as a planet gear carrier and the like. This enables the transmission of any desired torsional forces.
  • the annulus 1 according to FIG. 1 is made out of a sheet metal strip 4 .
  • This sheet metal strip 4 can be endless stock material into which the tooth profile 2 and the additional elements 3 are worked in by rolling, stamping, and/or forming. The required length of the sheet metal strip 4 can then be cut off. However, it is also possible to separate desired lengths from the sheet metal strip beforehand and form the tooth profile and the additional elements in these cut-off lengths.
  • the ends After bending of the appropriately cut-off lengths of the sheet metal strip into a circular shape, the ends can be welded together so that a dimensionally stable annulus is formed.

Abstract

A method of making a rotationally symmetric body, particularly an annulus (1) for a planet gear carrier, said annulus comprising a tooth profile (2) and/or additional elements (3), and said method being a non-cutting shaping method comprising: working the tooth profile (2) and/or the additional elements (3) into a sheet metal strip (4), cutting the strip of sheet metal (4) into desired lengths before or after working in the tooth profile (2) and/or the additional elements (3), bending round the sheet metal strip (4) to form a rotationally symmetric body and fixing the ends of the strip of sheet metal strip(4) to each other.

Description

    FIELD OF THE INVENTION
  • The invention concerns a method of making a rotationally symmetric body, particularly an annulus for a planet gear carrier, said annulus comprising a tooth profile and/or additional elements, and said method being a non-cutting shaping method.
    • BACKGROUND OF THE INVENTION
  • It is common knowledge to make such rotationally symmetric bodies like annuli by turning and milling a blank, that may also be a forged blank.
  • However, due to their complex and work-intensive fabrication, rotationally symmetric bodies of the pre-cited type are very expensive.
  • It is further known, for example from EP-0 639 4135 A2, to make a rotationally symmetric body without chip removal from a blank by cold forming by drawing or deep drawing and ironing, as also by flow turning. As can be seen particularly in FIGS. 1 to 11, such a manufacturing method requires a large number of manufacturing steps that, likewise, are still too cost-intensive. Furthermore, this fabrication method is only suitable for rotationally symmetric bodies comprising at least one radially oriented web region out of which cylindrical regions can be integrally formed without machining.
    • OBJECT OF THE INVENTION
  • The object of the invention is therefore to propose a method of making a rotationally symmetric body, particularly an annulus for a planet gear carrier, that is based on shaping without chip removal and thus eliminates the aforesaid drawbacks and permits an economic fabrication.
    • SUMMARY OF THE INVENTION
  • The invention achieves the above object by a method comprising: working the tooth profile and/or the additional elements into a sheet metal strip, cutting the sheet metal strip into desired lengths before or after working in the tooth profile and/or the additional elements, bending round the sheet metal strip to form a rotationally symmetric body and fixing the ends of the sheet metal strip to each other.
  • It is possible in this way to fabricate rotationally symmetric bodies, particularly annular bodies such as an annulus using non-cutting shaping procedures.
  • Further features of the invention form the subject matter of sub-claims 2 to 8.
  • Advantageously, the tooth profile and/or the additional elements are made without chip removal by rolling, stamping or forming. These are low-cost fabrication methods that, at the same time, provide adequate precision.
  • It is proposed in this connection to design the rolling, stamping or forming tool so that, after the bending of the sheet metal strip, the tooth profile and/or the additional elements have the desired profile shape and/or the additional elements are in the intended position. Depending on whether the tooth profile is subsequently arranged on the inner or on the outer wall, the flanks must have a larger or a smaller inclination on the straight sheet metal strip during manufacture.
  • The ends of the sheet metal strip can be joined to each other by welding.
  • However, it is also possible to form mating elements integrally on the ends of the sheet metal strip and to insert the elements into each other during and/or after the bending step.
  • Advantageously, the elements are configured as hook-shaped and/or T-shaped projections on one end of the sheet metal strip and as corresponding recesses on the other end (clinch connection). This results in a connection of the ends to each other that guarantees a good, stable connection of the ends relative to each other both in tangential direction as well as in a direction parallel to the central axis of the rotationally symmetric body. Depending on the field of use of the rotationally symmetric body, such a clinch connection is adequate. It can also be realized in an economic manner because it can be made at the same time as the stamping or shaping of the sheet metal strip or when cutting this into desired lengths.
  • Depending on the field of use of the rotationally symmetric body and the precision requirements, the ends of the sheet metal strip, even if a clinch connection is provided, can be additionally welded together, for example in the intermediate spaces of the hook-shaped and/or T-shaped projections and the corresponding recesses.
  • It is naturally also possible to provide two weld seams, one, as already described, in the intermediate spaces and the other on the ends of the hook-shaped and/or T-shaped projections and the respective bottom of the recesses.
  • The additional elements may be projections or recesses provided on the sides of the sheet metal strip that, in the finished state of the annulus, are oriented, for example, parallel to the central axis. With the help of these projections and recesses, such an annulus can be located or fixed on a further component, for example, a planet gear carrier.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • For a further explanation of the invention, reference is made to the drawings in which one example of embodiment of the invention is shown in simplified illustrations. The drawings show:
  • FIG. 1, a perspective view of a finished annulus manufactured according to the method of the invention, for a planet gear carrier,
  • FIG. 2, a detail of a larger sheet metal strip comprising a worked-in tooth profile and additional elements, in a side view, and
  • FIG. 3, a perspective illustration of a sheet metal strip corresponding to FIG. 2.
    • DETAILED DESCRIPTION OF THE DRAWINGS
  • In FIGS. 1 to 3, an annulus of a planet gear carrier where shown, is identified at 1 and comprises a tooth profile 2 on its inner side. The tooth profile is configured as a helical gearing. The annulus further comprises additional elements 3 in the form of projections and recesses on one side. With the help of these additional elements, the annulus can be located or fixed on another machine element such as a planet gear carrier and the like. This enables the transmission of any desired torsional forces.
  • The annulus 1 according to FIG. 1 is made out of a sheet metal strip 4. This sheet metal strip 4 can be endless stock material into which the tooth profile 2 and the additional elements 3 are worked in by rolling, stamping, and/or forming. The required length of the sheet metal strip 4 can then be cut off. However, it is also possible to separate desired lengths from the sheet metal strip beforehand and form the tooth profile and the additional elements in these cut-off lengths.
  • After bending of the appropriately cut-off lengths of the sheet metal strip into a circular shape, the ends can be welded together so that a dimensionally stable annulus is formed.
    • List of Reference Numerals
    • 1 Annulus
    • 2 Tooth profile
    • 3 Additional elements
    • 4 Sheet metal strip

Claims (9)

1. A method of making a rotationally symmetric body, particularly an annulus (1) for a planet gear carrier, said annulus comprising a tooth profile (2) and/or additional elements (3), and said method being a non-cutting shaping method comprising: working the tooth profile (2) and/or the additional elements (3) into a metal strip (4), cutting the sheet metal strip (4) into desired lengths before or after working in the tooth profile (2) and/or the additional elements (3), bending round the sheet metal strip (4) to form a rotationally symmetric body and fixing the ends of the sheet metal strip (4) to each other.
2. A method according to claim 1, wherein the tooth profile (2) and/or the additional elements (3) are made by rolling, stamping and/or forming.
3. A method according to claims 1, wherein the rolling, stamping or forming tool is designed so that, after the bending of the sheet metal strip (4), the tooth profile (2) and/or the additional elements (3) have the desired profile shape and/or the additional elements are in the intended position.
4. A method according to claim 1, wherein the ends of the sheet metal strip (4) are welded together.
5. A method according to claim 1 wherein mating elements are formed integrally on the ends of the sheet metal strip (4) and are inserted into each other during and/or after the bending step.
6. A method according to claim 5, wherein the elements on the ends of the sheet metal strip (4) are made at the same time as the stamping or shaping of the sheet metal strip or when cutting the sheet metal strip into desired lengths.
7. A method according to claim 5, wherein the elements are configured as hook-shaped and/or T-shaped projections on one end of the sheet metal strip (4) and as corresponding recesses on the other end (clinch connection).
8. A method according to claim 5 wherein the ends of the sheet metal strip (4) are welded to each other at least between the elements.
9. A method according to claim 6, wherein the elements are configured as hook-shaped and/or T-shaped projections on one end of the sheet metal strip (4) and as corresponding recesses on the other end (clinch connection).
US10/506,650 2002-03-08 2003-01-29 Method for the production of an internal geared wheel for a planetary carrier Abandoned US20050126240A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10210393A DE10210393A1 (en) 2002-03-08 2002-03-08 Method of manufacturing a ring gear for planet carriers
DE10210393.3 2002-03-08
PCT/EP2003/000869 WO2003076124A1 (en) 2002-03-08 2003-01-29 Method for the production of an internal geared wheel for a planetary carrier

Publications (1)

Publication Number Publication Date
US20050126240A1 true US20050126240A1 (en) 2005-06-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10/506,650 Abandoned US20050126240A1 (en) 2002-03-08 2003-01-29 Method for the production of an internal geared wheel for a planetary carrier

Country Status (7)

Country Link
US (1) US20050126240A1 (en)
EP (1) EP1483079A1 (en)
CN (1) CN1638916A (en)
AU (1) AU2003205697A1 (en)
BR (1) BR0303341A (en)
DE (1) DE10210393A1 (en)
WO (1) WO2003076124A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103586632A (en) * 2013-10-29 2014-02-19 内蒙古北方重工业集团有限公司 Production method of inner spiral spline sleeve
US20160201784A1 (en) * 2012-03-30 2016-07-14 Scott L MURRAY Mechanical exfoliation apparatus
WO2023043419A1 (en) * 2021-09-20 2023-03-23 Gaziantep Universitesi Rektorlugu A method for proper mounting grouping of planetary gearbox components with a low backlash value target

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DE102009018409A1 (en) 2009-04-22 2010-10-28 Daimler Ag Hollow wheel has wall with toothing at periphery of wall, where wall of hollow wheel is provided in area by reinforcement material layer
DE102011011438A1 (en) * 2011-02-16 2012-08-16 Form Technology Gmbh Method for manufacturing planetary carrier as part of planetary gear, involves engaging web star pins through recesses in web plate, and connecting star pins with web plate as reshaped pin in form-fit manner by roll forming process
CN102319843A (en) * 2011-07-19 2012-01-18 湖北行星传动设备有限公司 Machining method of internal gear teeth
CN102729004A (en) * 2012-05-24 2012-10-17 池州市邦鼐机电科技有限公司 Annular gear machining technology
CN103624129A (en) * 2012-08-23 2014-03-12 中国航天科技集团公司长征机械厂 Spinning forming new technology of shell part with inner and outer teeth
CN103008513B (en) * 2012-12-24 2015-02-18 吴文海 Production process of ring gear steel and ring gear
DE102014214743B4 (en) * 2014-07-28 2021-12-23 Schaeffler Technologies AG & Co. KG Annular gear component, in particular a ring gear, with running teeth bent in a ring shape
DE102015210935A1 (en) * 2015-06-15 2016-12-15 Schaeffler Technologies AG & Co. KG Ring gear arrangement with two fixed ring gears and method for producing a ring gear arrangement
DE102016107240A1 (en) * 2016-04-19 2017-10-19 Hoerbiger Antriebstechnik Holding Gmbh Method for producing a sliding sleeve for a manual transmission synchronous assembly and produced by the method sliding sleeve
CN105855814A (en) * 2016-05-26 2016-08-17 杭州太普机械科技有限公司 Split type planetary carrier and welding tool and machining technique thereof

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US1508387A (en) * 1923-11-19 1924-09-16 Ford Motor Co Method of forming ring gears
US5551270A (en) * 1994-07-18 1996-09-03 Ford Motor Company Extrusion forming of internal helical splines
US6223574B1 (en) * 1997-05-14 2001-05-01 Suncall Corporation Thin-walled ring-shaped member and method of manufacturing same

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JPS62176624A (en) * 1986-01-28 1987-08-03 Nissan Motor Co Ltd Manufacture of ring gear
JPH07125088A (en) * 1993-11-01 1995-05-16 Chuo Spring Co Ltd Manufacture of gear
DE19518460A1 (en) * 1995-05-19 1996-11-21 Bad Dueben Profilwalzmaschinen Production method for rings with axially parallel profiles
DE19757186A1 (en) * 1997-12-22 1999-06-24 Schaeffler Waelzlager Ohg Manufacturing hollow cylindrical internal and external gears
US6223571B1 (en) * 1999-03-26 2001-05-01 Caterpillar Inc. Magnetically coupled keystart switch
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US1508387A (en) * 1923-11-19 1924-09-16 Ford Motor Co Method of forming ring gears
US5551270A (en) * 1994-07-18 1996-09-03 Ford Motor Company Extrusion forming of internal helical splines
US6223574B1 (en) * 1997-05-14 2001-05-01 Suncall Corporation Thin-walled ring-shaped member and method of manufacturing same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160201784A1 (en) * 2012-03-30 2016-07-14 Scott L MURRAY Mechanical exfoliation apparatus
US10189025B2 (en) 2012-03-30 2019-01-29 Xg Sciences, Inc. Cam assembly comprising cylindrical housing
US10300492B2 (en) 2012-03-30 2019-05-28 Xg Sciences, Inc. Method for mechanical exfoliation of particulate materials
US10322415B2 (en) 2012-03-30 2019-06-18 Xg Sciences, Inc. Process of forming a composition with an apparatus for mechanical exfoliation of particulate materials
US10384211B2 (en) * 2012-03-30 2019-08-20 Xg Sciences, Inc. Ring gear of a mechanical exfoliation apparatus
CN103586632A (en) * 2013-10-29 2014-02-19 内蒙古北方重工业集团有限公司 Production method of inner spiral spline sleeve
WO2023043419A1 (en) * 2021-09-20 2023-03-23 Gaziantep Universitesi Rektorlugu A method for proper mounting grouping of planetary gearbox components with a low backlash value target

Also Published As

Publication number Publication date
BR0303341A (en) 2004-07-06
EP1483079A1 (en) 2004-12-08
WO2003076124A1 (en) 2003-09-18
CN1638916A (en) 2005-07-13
AU2003205697A1 (en) 2003-09-22
DE10210393A1 (en) 2003-09-25

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AS Assignment

Owner name: INA-SCHAEFFLER KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WALDERT, HARTWIG;KICK-RODENBUCHER, REINHARD;REEL/FRAME:016416/0332;SIGNING DATES FROM 20040812 TO 20040826

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION