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WO2000057077A1 - Element d'accouplement d'une unite d'accouplement pour une boite de vitesses - Google Patents

Element d'accouplement d'une unite d'accouplement pour une boite de vitesses Download PDF

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Publication number
WO2000057077A1
WO2000057077A1 PCT/EP2000/001596 EP0001596W WO0057077A1 WO 2000057077 A1 WO2000057077 A1 WO 2000057077A1 EP 0001596 W EP0001596 W EP 0001596W WO 0057077 A1 WO0057077 A1 WO 0057077A1
Authority
WO
WIPO (PCT)
Prior art keywords
teeth
coupling element
toothing
web
coupling
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/EP2000/001596
Other languages
German (de)
English (en)
Inventor
Rudolf Sinner
Hartwig Waldert
Josef Schwuger
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.)
INA Waelzlager Schaeffler OHG
Original Assignee
INA Waelzlager Schaeffler OHG
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 INA Waelzlager Schaeffler OHG filed Critical INA Waelzlager Schaeffler OHG
Priority to DE10080705T priority Critical patent/DE10080705D2/de
Priority to BR0009070-0A priority patent/BR0009070A/pt
Publication of WO2000057077A1 publication Critical patent/WO2000057077A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D11/08—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially
    • F16D11/10—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially with clutching members movable only axially
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/02—Arrangements for synchronisation, also for power-operated clutches
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D2011/002—Clutches in which the members have interengaging parts using an external and axially slidable sleeve for coupling the teeth of both coupling components together
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
    • F16D23/02—Arrangements for synchronisation, also for power-operated clutches
    • F16D23/04—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch
    • F16D23/06—Arrangements for synchronisation, also for power-operated clutches with an additional friction clutch and a blocking mechanism preventing the engagement of the main clutch prior to synchronisation
    • F16D2023/0631—Sliding sleeves; Details thereof

Definitions

  • the invention relates to a coupling element of a clutch unit for manual transmissions for the rotationally fixed connection of a transmission shaft to a gearwheel rotatable relative to the transmission shaft, the coupling element having a toothing and the coupling element being formed at least in two parts from a first element and a second element, and at least the first Element is manufactured by a non-cutting shaping process and is connected to the second element.
  • Coupling elements of this type can be found in coupling units of manually shiftable transmissions.
  • the coupling units are used both in unsynchronized circuits and in synchronized circuits.
  • Claw clutches are used as clutch units in the unsynchronized circuits.
  • the clutch units in synchronized gears are designed as synchronous clutches, also called synchronizers. Both in the unsynchronized gearboxes and in the synchronized gearboxes, such a clutch unit can be used to positively couple a gear shaft with a gear wheel of a gear pair that is constantly meshing with one another.
  • the coupling unit is usually made up of three coupling elements.
  • a first coupling element sits on the transmission shaft in a rotationally fixed manner and is in engagement with a second coupling element via a toothing.
  • the second coupling element is arranged so as to be longitudinally displaceable relative to the first coupling element and is provided with a coupling toothing which is provided for engaging in a third coupling element.
  • the best-known examples of such coupling elements are the synchronizer body, the sliding sleeve and the coupling teeth of a gear wheel of a synchronizing device.
  • the coupling elements are made according to the prior art from a blank by machining or are non-cutting, z. B. manufactured by reshaping.
  • the toothing is formed from teeth which have a wide variety of design forms and which can generally only be designed with great effort.
  • z. B. the contours of recesses on the tooth flanks or locking grooves in the machining direction so-called undercuts.
  • These undercut contours or undercuts are not to be introduced in the preferred machining and demolding direction or stand in the way of machining. Such contours can usually only be introduced by additional and complex operations. Undercuts should therefore be largely avoided when designing machined coupling elements. In the interest of an optimal mode of operation of the coupling element in the synchronizing unit, however, such undercuts cannot generally be completely dispensed with. Additional and complex work steps cause additional and correspondingly high costs in the manufacture of coupling elements.
  • the manufacturing costs of the coupling element can be reduced by machining without cutting in comparison to machining.
  • the locking grooves and recesses mentioned, for example, are likewise not to be incorporated in one-piece coupling elements in a non-cutting production, since these generally have undercuts in the demolding direction, e.g. B. a drawing die. For this reason, coupling elements made from individually manufactured components are put together.
  • the joining plane runs through the parting plane of the undercuts of the finished part, so that no undercut is formed on the component.
  • a coupling element of the generic type designed as a sliding sleeve is known for example from DE 39 08 989 C2.
  • This sliding sleeve is formed from two symmetrical or approximately symmetrical, annular and one-piece components. On a half sleeve body, each half of the symmetry has half of a toothing formed on the inner circumference and part of the shift fork guide.
  • the components are free of undercuts and are manufactured using a uniform, casting or sintering process. Following their individual production, the components are connected to one another at the end by joining and form the sliding sleeve.
  • a disadvantage of coupling elements designed in this way is that a plurality of undercuts arranged one behind the other in the demolding direction, if at all, can only be achieved by dividing the coupling element into a corresponding number of separately manufactured components arranged one behind the other. The components as individual parts are then no longer symmetrical to one another. The accuracy of the individual elements, in particular the toothing, suffers from such joints.
  • the production of a coupling element designed in this way requires a large number of tools, is complicated and therefore expensive.
  • Coupling elements according to the prior art are with their individual functional elements such. B. the sleeve body, the shift fork guide and the teeth of a sliding sleeve, made of one material.
  • the requirements for such functional elements such as. B. the strength, hardness and processing status of the surface, but are different from functional element to functional element.
  • the choice of material is therefore usually made as a compromise between the requirements imposed by the most stressed functional element and the machinability of the material.
  • the object of the invention is therefore to provide a coupling element which allows any number and arrangement of undercut contours on the toothing in its design, allows a selection of materials adapted to the different requirements of the individual elements of the coupling element and which is inexpensive in particular in mass production can be made.
  • an element of the coupling element formed from at least two elements is formed by the toothing and that the toothing is formed from teeth produced in a non-cutting shaping process.
  • the teeth are connected to one another at least in sections on the circumference in succession by at least one connecting element.
  • the toothing is therefore manufactured separately and, depending on the design, is fastened to the one or more elements of the coupling element of the coupling unit in the form of sections, that is to say segments, or as an integral, at least annular element.
  • the separate design of the toothing makes their manufacture easier.
  • the teeth of the toothing can be individually shaped and therefore easily provided with complex contours.
  • the choice of materials, the processing status and the hardness status are exclusively adapted to the stresses on the gearing and their manufacturability.
  • the tools for producing such gearing can be designed simply and inexpensively.
  • the modification of the toothing on otherwise identical coupling elements is possible through the use of e.g. B. easy to implement different gear sections.
  • the weight of such components and the material costs for their manufacture are low, since the essential portion of the material used for their manufacture is also used for their actual shaping and design. There is little waste.
  • Coupling elements according to the invention are inexpensive to manufacture, particularly in mass production.
  • the teeth are accessible from practically all directions for the introduction of complicated undercut contours and for fine finishing.
  • the connecting elements are preferably formed from sheet metal by a forming process such as pressing, rolling, stamping and embossing.
  • a common, ie one-piece design of teeth and their connecting elements and a production of the teeth and their connecting elements as individual parts. If teeth and connecting elements of the toothing are formed in one piece with one another, a toothing formed from a sheet metal strip is provided in a preferred embodiment.
  • the teeth as individual parts are designed from a wire or sheet metal profile by embossing or pressing or by z. B. shaped a sintering process.
  • Teeth of this type are then to be connected to their connecting elements with an inseparable connection, preferably a weld.
  • an inseparable connection preferably a weld.
  • one or more webs or one or more circumferential rims are provided.
  • the webs or rims are either formed in one piece on the teeth or manufactured as individual parts.
  • the webs are preferably used for the formation of tooth segments.
  • the machining of the teeth from all directions is simplified if, as the further embodiment of the invention provides, the rims or webs are arranged at both ends of the adjacent teeth in the axial direction and the webs or ridges are connected to the teeth via a web-shaped connection are.
  • the webs and ridges block the machining of the teeth only slightly, particularly in the case of toothings formed in one piece.
  • such a configuration of the teeth with their connecting elements is advantageous because they are e.g. B. from an endless material by punching and forming. Teeth and ridges or ridges are worked out together from the continuous material, the ridges or ridges serve as production aids and hold the teeth in position until they are finished, including their fine machining.
  • a special embodiment of the invention provides for the toothing to be designed with one or more ribs from a sheet metal strip cut to length.
  • the sheet metal strip is formed by punching and reshaping it with its teeth and rims in an elongated form.
  • the length of the sheet metal strip corresponds to the circumferential length of the finished toothing.
  • the coupling elements are designed as a sliding sleeve or synchronizer body.
  • a special design of a sliding sleeve is formed by a shift fork guide to which the teeth are attached as a single part. Such a sliding sleeve is light in weight.
  • the shift fork guide is preferably aligned on the toothing on a shelf, or the toothing or teeth and the shift fork guide interlock positively. Such a form fit is such.
  • a synchronizer body can be designed similarly.
  • the toothing is fastened to the outer diameter of a wall of a synchronizer body provided with at least one shaft seat or a hub. It is conceivable to fasten the teeth as individual parts but also a connection of teeth and connecting elements. Finally, it is provided in a further embodiment to form the individual elements of a coupling element from different materials.
  • As a material for the teeth z. B. Provide steels for case hardening.
  • FIG. 1 shows an exemplary embodiment of a sliding sleeve according to the invention in the main view
  • FIG. 2 shows a partial view of the sliding sleeve according to FIG. 2 in section along the line II-II,
  • FIG. 3 segment of a piece of toothing, the connecting element of which is formed by a web, in its extended initial state
  • FIG. 4 shows a sectional view through the segment according to FIG. 3 along the line IV-IV,
  • FIG. 5 shows a segment of a toothing whose teeth and connecting element are inseparably connected to one another, in its extended initial state
  • FIG. 6 shows a partial view of an embodiment of a toothing of a sliding sleeve, with two shelves and teeth permanently attached to the shelves,
  • FIG. 7 shows a partial view of the toothing according to FIG. 6 in section along line VII,
  • Figure 8 shows a portion of a toothing with two rims that a cut and profiled sheet metal strip is formed, in its extended initial state
  • Figure 9 shows an embodiment of a toothing made of a cut, profiled and circularly curved
  • FIG. 10 shows an exemplary embodiment of a sliding sleeve which, with its shift fork guide, forms two ridges of a toothing
  • FIG. 11 a shows a partial view of the sliding sleeve according to FIG. 10, in section along the line XI-XI,
  • 11b shows a further partial view of the sliding sleeve according to FIG. 10, in section along the line Xl-Xl in an alternative embodiment
  • Figure 12 shows an embodiment of a toothed segment
  • Figure 13 shows an embodiment of a synchronizer body with toothing segments arranged on its outer circumference.
  • the sliding sleeve 1 shows, as an exemplary embodiment of a coupling element 30, a sliding sleeve 1 of a synchronizing device, not shown.
  • the sliding sleeve 1 is composed of a first element 31 and a second element 32.
  • the second element 32 of the sliding sleeve 1 is formed by a ring-shaped shift fork guide 2 which is U-shaped in cross section.
  • the first element 31 is fastened in the form of individual teeth 3.
  • the teeth 3 are each permanently welded 4 to the shift fork guide 2.
  • toothed segment 5 denotes a toothed segment.
  • the toothed segment 5 is formed from teeth 6, which are each connected to one another by a connecting element 33 designed as a web 7.
  • a sectional view of the toothed segment 5, the webs 7 and the teeth 6 are integrally formed with each other.
  • FIG. 5 shows a toothed segment 8 in its extended initial state, which is formed in several parts from at least one flange 9 as a connecting element 33 and individual teeth 10.
  • the rim 9 and each tooth 10 are permanently connected to one another by at least one weld 11.
  • FIG. 6 An embodiment of a toothing 12 of a coupling element 30 is shown in Figures 6 and 7.
  • the connecting elements 33 of the toothing 12 are formed from two rims 13.
  • the rims 13 are aligned with stops 14a of individual teeth 14 and are each secured to each tooth 14 by a weld 15.
  • FIG. 8 shows a section of a preferred embodiment of a toothing 16 in its extended initial state.
  • the toothing 16 is formed from a sheet metal strip cut to length.
  • Individual teeth 17 are formed from the sheet metal strip.
  • the teeth 17 are connected in one piece via web-shaped connections 18 to two rims 19 arranged at both ends of the toothing 16 in the axial direction.
  • FIG. 9 shows an example of a toothing 20 which is made from a sheet metal strip as described in FIG. 8.
  • the toothing 20 has welds 21, with which the cut edges 20a of the sheet metal strip of the toothing 20 are connected to one another.
  • a coupling element 30 is shown as an example as a sliding sleeve 22.
  • the second element 32 of the sliding sleeve 22 is formed from two rims 23 of a shift fork guide 23a and the first element 31 from a toothing 24.
  • the toothing 24 is either formed from individual teeth or from teeth formed in one piece with another rim.
  • the rims 23 according to FIG. 11b are aligned with the toothing 24 and are permanently connected to this toothing 24 and form the shift fork guide 23a with sections of the toothing 24.
  • FIG. 11 a alternatively shows how the rims 23 positively engage in recesses 24 a.
  • FIG. 12 shows another exemplary embodiment of a toothing element.
  • the toothing segment 37 is formed from teeth 35 and webs 34.
  • the webs 34 are arranged at both ends of the teeth 35 in the axial direction and are connected to the teeth 35 via connections 36.
  • FIG. 13 shows an exemplary embodiment of a coupling element in the form of a synchronizer body 25.
  • the synchronizer body 25 is formed from a hub 26, a wall 27 and toothed segments 28 arranged on its outer circumference.
  • the toothed segments 28 are connected to the wall 27 by welds 29.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

Elément (30) d'accouplement d'une unité d'accouplement pour une boîte de vitesses, destiné à coupler solidaires en rotation un arbre de transmission et une roue de vitesse rotative par rapport à l'arbre de transmission. Ledit élément d'accouplement est constitué d'au moins un premier élément (31) et d'un second élément (32), le premier élément constituant la denture (12) composée de dents (14) fabriquées lors d'un processus de formage sans enlèvement de copeaux.
PCT/EP2000/001596 1999-03-18 2000-02-25 Element d'accouplement d'une unite d'accouplement pour une boite de vitesses Ceased WO2000057077A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10080705T DE10080705D2 (de) 1999-03-18 2000-02-25 Kupplungselement einer Kupplungseinheit für Schaltgetriebe
BR0009070-0A BR0009070A (pt) 1999-03-18 2000-02-25 Elemento de embreagem de um conjunto deembreagem para caixas de câmbio

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999112133 DE19912133A1 (de) 1999-03-18 1999-03-18 Kupplungselement einer Kupplungseinheit für Schaltgetriebe
DE19912133.8 1999-03-18

Publications (1)

Publication Number Publication Date
WO2000057077A1 true WO2000057077A1 (fr) 2000-09-28

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ID=7901457

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/001596 Ceased WO2000057077A1 (fr) 1999-03-18 2000-02-25 Element d'accouplement d'une unite d'accouplement pour une boite de vitesses

Country Status (3)

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BR (1) BR0009070A (fr)
DE (2) DE19912133A1 (fr)
WO (1) WO2000057077A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10320949A1 (de) * 2003-05-09 2004-11-25 Ina-Schaeffler Kg Schiebemuffe für ein Schaltgetriebe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20011450A1 (it) * 2000-07-12 2003-01-06 Schaeffler Waelzlager Ohg Elemento di accoppiamento di una unita' di accoppiamento per cambio di velocita'
DE10149845B4 (de) * 2001-10-10 2009-01-15 Schaeffler Kg Grundkörper einer Schaltmuffe
DE10247953A1 (de) * 2002-10-15 2004-04-29 Ina-Schaeffler Kg Schiebemuffe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013153A (en) * 1974-09-06 1977-03-22 Toyota Jidosha Kogyo Kabushiki Kaisha Clutch hub for transmission
US4070920A (en) * 1976-12-09 1978-01-31 The Horsburgh And Scott Company Composite gear having carburized teeth and method of making same
JPS57195547A (en) * 1981-05-29 1982-12-01 Kawasaki Heavy Ind Ltd Production for sprocket
DE4028876A1 (de) * 1990-04-04 1991-10-10 Guenter Uebelein Vorrichtung zum reibschweissen von zahnraedern
DE3908989C2 (fr) 1989-03-18 1993-04-29 Sinterstahl Gmbh, 8958 Fuessen, De
DE19821565A1 (de) * 1998-05-14 1999-11-18 Schaeffler Waelzlager Ohg Synchronkörper einer Synchronisiereinrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE544027C (de) * 1927-05-21 1932-02-12 Sim Frey Dr Ing Zahnrad
GB2123317A (en) * 1982-05-11 1984-02-01 Christopher Davis Lloyd Bimetallic sprocket
DE19718905B4 (de) * 1997-05-05 2005-08-25 Ina-Schaeffler Kg Synchronring mit angeschweißten Mitnehmernasen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013153A (en) * 1974-09-06 1977-03-22 Toyota Jidosha Kogyo Kabushiki Kaisha Clutch hub for transmission
US4070920A (en) * 1976-12-09 1978-01-31 The Horsburgh And Scott Company Composite gear having carburized teeth and method of making same
JPS57195547A (en) * 1981-05-29 1982-12-01 Kawasaki Heavy Ind Ltd Production for sprocket
DE3908989C2 (fr) 1989-03-18 1993-04-29 Sinterstahl Gmbh, 8958 Fuessen, De
DE4028876A1 (de) * 1990-04-04 1991-10-10 Guenter Uebelein Vorrichtung zum reibschweissen von zahnraedern
DE19821565A1 (de) * 1998-05-14 1999-11-18 Schaeffler Waelzlager Ohg Synchronkörper einer Synchronisiereinrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 047 (M - 196) 24 February 1983 (1983-02-24) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10320949A1 (de) * 2003-05-09 2004-11-25 Ina-Schaeffler Kg Schiebemuffe für ein Schaltgetriebe

Also Published As

Publication number Publication date
DE19912133A1 (de) 2000-09-21
BR0009070A (pt) 2001-12-26
DE10080705D2 (de) 2002-02-14

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