WO2016131456A1 - Transmission à roulement planétaire et procédé de fabrication de ladite transmission - Google Patents

Transmission à roulement planétaire et procédé de fabrication de ladite transmission Download PDF

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Publication number
WO2016131456A1
WO2016131456A1 PCT/DE2016/200087 DE2016200087W WO2016131456A1 WO 2016131456 A1 WO2016131456 A1 WO 2016131456A1 DE 2016200087 W DE2016200087 W DE 2016200087W WO 2016131456 A1 WO2016131456 A1 WO 2016131456A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
spindle shaft
spindle
collar
rolling
Prior art date
Application number
PCT/DE2016/200087
Other languages
German (de)
English (en)
Inventor
Dieter Stoll
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2016131456A1 publication Critical patent/WO2016131456A1/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
    • 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
    • F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
    • F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
    • F16H25/2252—Planetary rollers between nut and screw
    • 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
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/063—Fixing them on the shaft
    • 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
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/064—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end non-disconnectable
    • F16D1/072—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end non-disconnectable involving plastic deformation
    • 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
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/40—Shaping by deformation without removing material
    • F16C2220/44—Shaping by deformation without removing material by rolling
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings

Definitions

  • the invention relates to a Planetenskylzgetriebe with a mounted by means of a support bearing, preferably rotatably driven by an electric drive spindle shaft, an axially displaceable by the spindle shaft, rotatably mounted spindle nut and a plurality of arranged between spindle nut and spindle shaft and abisselz zenden planetary rolling elements.
  • planetary gearboxes convert an axial into a rotary motion or vice versa.
  • a spindle nut and a spindle shaft are provided with an internal thread or an external thread on which planetary rolling bodies provided with different borrowed, complementarily provided to these threaded portions.
  • a gear ratio is achieved.
  • Such Planetenskye be used in a variety of applications. An example is the motor vehicle sector, where such transmissions z. B. are used for actuation or power assistance of friction clutches, steering linkages, brakes, sunroofs or suspension adjustments.
  • the invention is therefore based on the problem of specifying a planetary roller gear that is improved in comparison.
  • a bearing collar formed by rolling is formed on the spindle shaft for a support bearing.
  • At the bearing collar can bear a bearing ring of the support bearing, or a locking ring on which a bearing ring of the support bearing is mounted.
  • the invention proposes in an alternative embodiment to form the bearing collar in one piece by rolling using a corresponding roller burnishing device.
  • a non-cutting processing method that expresses
  • the bearing collar is formed, that is dimensioned in diameter, that it can be used directly as a seat for the bearing ring of the respective bearing supporting the spindle shaft bearing.
  • a bearing collar is also formed by rolling, which serves as a bearing seat for an axial locking ring on which a bearing ring of the support bearing is mounted.
  • a bearing collar is formed, which does not directly auflagert the bearing ring of the support bearing, but a locking ring, which is then designed in diameter so that it provides the axial bearing surface for the bearing ring of the support bearing. The formation of this, compared with the bearing collar according to the first alternative in diameter smaller, Lagerbundes
  • the training can also be done by machining, in which case, since the bearing collar is indeed significantly reduced in diameter, the resulting chip volume is relatively low, so that a spindle blank can be used whose output diameter is not excessively larger than the nominal diameter of finished spindle shaft is.
  • the bearing collar on the bearing ring or the circlip bearing side has a tapered to the shaft core bevel on which the bearing ring or the circlip rests with a complementary oblique surface.
  • a centering of the bearing or locking ring is achieved.
  • a slight radial widening of the securing ring can also be achieved by the applied axial load and, in turn, the contour of the retaining ring.
  • the bearing collar preferably has on the bearing ring or the retaining ring auflagernden side to a shaft core tapering slope, abuts the in the mounting position of the bearing ring or the retaining ring with a complementary inclined surface.
  • the invention further relates to a method for producing a Planetenannalzgetriebes of the type described.
  • the method is inventively characterized by the fact that a radially projecting bearing collar for a support bearing or a locking ring is formed by rolling by means of a roller burnishing device.
  • one or more holding rollers which support the spindle shaft and one or more profile rollers rolling the bearing collar are preferably used for this purpose.
  • About the retaining roller is a corresponding fixation respectively support, while ensuring the profile role that the bearing collar also receives the desired shape.
  • the machining is carried out in such a way that the bearing collar is rolled with a bevel tapering to the shaft core, against which the bearing ring or the locking ring, depending on the configuration of the Planetenxxlzgetriebes, with a corresponding complementary inclined surface.
  • FIG. 1 shows a schematic representation of a Planetenxxlzgetriebes invention
  • 7 shows a schematic diagram of a spindle shaft produced by a method according to the invention according to a second variant
  • FIG. 8 is a schematic diagram of a spindle shaft according to the invention for a planetary roller support according to the invention
  • FIG. 9 shows a third embodiment of a spindle shaft produced according to a third variant of the method according to the invention.
  • Figure 1 shows in the form of a schematic diagram of a Planetenxxlzgetriebe 1, comprising a spindle shaft 2 with an outer profile 3 in the form of an external thread.
  • a spindle nut 4 which has an inner profile 5 which is not shown in greater detail. Furthermore, a plurality of roller bodies 6 functioning as planets are provided, which have an external profiling 7. With the one outer profiling section 7a, each rolling element 6 cooperates with the outer profiling 3 of the spindle shaft 2. With the outer profiling sections 7b, each rolling element interacts with the inner profiling 5 of the spindle nut. At least the external profile 3 has a pitch.
  • the spindle shaft 2 has a spindle shaft section 8, with which it is coupled, for example, with an electric motor not shown in detail, so that the threaded spindle 2 can be rotationally driven. However, it is arranged axially fixed position, so that in a spindle shaft nrotation the spindle nut 4, guided over the rolling body 6, travels along the spindle shaft 2.
  • the spindle nut 4 is rotatably guided in a guide not shown in detail.
  • At least one bearing collar 21 is provided on which a support bearing (not shown here in detail), usually a deep groove ball bearing, is mounted.
  • a support bearing usually a deep groove ball bearing
  • FIGS. 2-7 show, in individual steps, the manufacture of the bearing collar 21 on the spindle shaft 2.
  • FIG. 2 shows the spindle shaft blank from which the spindle shaft 2 is to be manufactured. Trained already is the external profiling 3, so the external thread.
  • the spindle shaft portion 8 is still undeformed, but it corresponds in diameter to the nominal diameter or the outer diameter of the outer profile 3.
  • the support bearing 9 can be pushed onto the spindle shaft section 8, it is fixed there with the inner ring 10, as Figure 3 shows.
  • a bearing collar 21 is now formed on which the inner ring 10 is axially supported. This is illustrated in the steps according to FIGS. 4 and 5.
  • this roller burnishing apparatus comprises two retaining rollers 13 which receive the spindle shaft 2 respectively the spindle shaft section 8 between them. It also includes two profile rollers 14, which cause the shaping. As can be seen, the profile rollers 14 are provided on their outer circumference with a profiling 15, which is form-forming for the bearing collar 21.
  • the profile rollers 14 are now pressed with high force against the spindle shaft 2. This results in a pressure-related flow of the material of the spindle shaft 2, so the steel. This is shown in Figure 5, in which the situation is shown towards the end of the rolling process.
  • the bearing collar 21 forms on the one hand, and on the other hand an annular groove 16 from which the material has "flowed" into the bearing collar 21.
  • the bearing collar 21 has an oblique surface 17 on its end directed towards the support bearing 9, ie a slightly conical one Surface which is directed to the inner ring 10 of the support bearing Inner ring 10 itself has a complementary inclined surface 18, so also a conical surface.
  • FIG. 8 shows a further example of a spindle shaft 2 produced using a second method variant according to the invention, the bearing collar 21 there being likewise produced by rolling.
  • the bearing collar 21 is here designed significantly smaller than in the embodiment according to FIG 7.
  • the bearing collar 21 has also in this embodiment, the inclined surface 17 on.
  • the locking ring 19 is provided with a complementary inclined surface 20, so that it again comes to the force distribution already described with reference to FIG.
  • the locking ring 19 now forms the entire support diameter for the support bearing 9, the inner ring 10 rests against the retaining ring 19.
  • An embodiment of the support bearing 9 with a corresponding inclined surface on the inner ring 10 is not required, but can be provided.
  • FIG. 9 shows an embodiment of a spindle shaft 2, which was produced according to a third variant of the method according to the invention.
  • a spindle blank is used, the output diameter and also the diameter in the region of the spindle shaft portion 8 is slightly larger than the target diameter or outer diameter, which has the outer profile 3 after completion.
  • the spindle blank is slightly machined down to the nominal size, that is, machined. is processed.
  • the bearing collar 21 and the spindle shaft portion 8 is to be machined accordingly, so therefore remove some material.
  • This bearing collar 21 is, comparably with the bearing collar 21 of Figure 8, seen radially relatively low.
  • the bearing collar 21 likewise has an oblique surface 17, just as the securing ring 19 has a complementary inclined surface 20, so that it in turn results in radial expansion of the securing ring resulting from the axial load comes as well as to a radial pressing of the bearing collar against the spindle shaft 2. Then on the axial circlip 19 again supports the support bearing 9 with the inner ring 10 from.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

Transmission à roulement planétaire (1) qui comporte un arbre (2) pouvant être entraîné en rotation et supporté au moyen d'un palier d'appui (9), un écrou (4) pouvant être déplacé axialement par l'arbre et solidaire en rotation, et plusieurs corps de roulement planétaires (6) situés et pouvant rouler entre l'écrou (4) et l'arbre (2), au moins un collet de butée (21) pour le palier d'appui (9) étant formé par galetage sur l'arbre (2).
PCT/DE2016/200087 2015-02-20 2016-02-12 Transmission à roulement planétaire et procédé de fabrication de ladite transmission WO2016131456A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015203086.5 2015-02-20
DE102015203086.5A DE102015203086A1 (de) 2015-02-20 2015-02-20 Planetenwälzgetriebe sowie Verfahren zur Herstellung einer Spindelwelle für ein Planetenwälzgetriebe

Publications (1)

Publication Number Publication Date
WO2016131456A1 true WO2016131456A1 (fr) 2016-08-25

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ID=55802133

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2016/200087 WO2016131456A1 (fr) 2015-02-20 2016-02-12 Transmission à roulement planétaire et procédé de fabrication de ladite transmission

Country Status (2)

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DE (1) DE102015203086A1 (fr)
WO (1) WO2016131456A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020215271A1 (de) 2020-12-03 2022-06-09 Volkswagen Aktiengesellschaft Verfahren zur Befestigung eines geteilten Innenringes auf einer Welle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017108475A1 (de) * 2017-04-21 2018-10-25 Schaeffler Technologies AG & Co. KG Gewindespindel und Verfahren zur Herstellung einer Gewindespindel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755091A1 (de) * 1997-12-11 1999-06-17 Bosch Gmbh Robert Wellen-Naben-Verbindung sowie Verfahren zum Herstellen einer solchen
WO2002093716A1 (fr) * 2001-05-16 2002-11-21 Power Jacks Limited Dispositif de commande lineaire electromecanique ameliore
JP2011085169A (ja) * 2009-10-14 2011-04-28 Mitsuba Corp 回転軸およびその製造方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075889A1 (de) * 2011-05-16 2012-11-22 Schaeffler Technologies AG & Co. KG Rollengewindespindel eines Planetenwälzgewindetriebes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19755091A1 (de) * 1997-12-11 1999-06-17 Bosch Gmbh Robert Wellen-Naben-Verbindung sowie Verfahren zum Herstellen einer solchen
WO2002093716A1 (fr) * 2001-05-16 2002-11-21 Power Jacks Limited Dispositif de commande lineaire electromecanique ameliore
JP2011085169A (ja) * 2009-10-14 2011-04-28 Mitsuba Corp 回転軸およびその製造方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020215271A1 (de) 2020-12-03 2022-06-09 Volkswagen Aktiengesellschaft Verfahren zur Befestigung eines geteilten Innenringes auf einer Welle

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