EP1429878A1 - Procede permettant de fabriquer un arbre dote d'un manchon et dispositif comportant un arbre de ce type - Google Patents

Procede permettant de fabriquer un arbre dote d'un manchon et dispositif comportant un arbre de ce type

Info

Publication number
EP1429878A1
EP1429878A1 EP02767121A EP02767121A EP1429878A1 EP 1429878 A1 EP1429878 A1 EP 1429878A1 EP 02767121 A EP02767121 A EP 02767121A EP 02767121 A EP02767121 A EP 02767121A EP 1429878 A1 EP1429878 A1 EP 1429878A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
shaft
screw
armature shaft
worm
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.)
Withdrawn
Application number
EP02767121A
Other languages
German (de)
English (en)
Inventor
Ingo Drewe
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1429878A1 publication Critical patent/EP1429878A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • F16H55/22—Toothed members; Worms for transmissions with crossing shafts, especially worms, worm-gears
    • 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
    • B21H5/005—Worms
    • 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

Definitions

  • the invention relates to a method for producing a shaft with a sleeve and a device comprising such a shaft according to the preamble of the independent claims.
  • the German utility model GM 297 02 525.2 has disclosed a device which is used, for example, for moving window panes, sunroofs or seats.
  • a worm is pressed onto an armature shaft of an electric motor and transmits the torque of the electric motor to the worm wheel.
  • the front end of the armature shaft is guided in a rotary bearing bushing. This prevents the worm from evading radially and disrupting the meshing engagement between worm and worm wheel. This is particularly important when strong radial forces occur between the worm and the worm wheel, especially when the actuator moves against a stop.
  • pressing the prefabricated worm onto the armature shaft is a very complex process.
  • the production of the screw for example by means of casting processes or machining, is also quite complex.
  • rolling up the worm directly onto the armature shaft is far less expensive. Due to the process, however, the diameter of the worm is coupled to the diameter of the armature shaft, which means that the worm, due to its small diameter, dodges in the region of the toothing engagement, which necessitates storage at the free end of the worm.
  • a stepped shaft with an enlarged diameter in the could be used Area of the snail - however, this is of no interest from an economic point of view.
  • the method according to the invention with the features of claim 1 has the advantage that the application of a sleeve increases the shaft diameter in the area of the worm, which increases the bending stiffness of the shaft end. An additional bearing of the shaft at the screw end can therefore be dispensed with. Due to the fact that the worm is only formed on the sleeve in a second step, the accuracy requirements when fixing the sleeve to the shaft are very low with regard to its outer diameter, its concentric arrangement and its bending.
  • the sleeve is fixed to the shaft particularly easily and inexpensively by means of material displacement (e.g. squeezing).
  • material displacement e.g. squeezing
  • the both positive and frictional connection between the sleeve and the shaft very securely prevents the sleeve from rotating and shifting.
  • any prefabricated screw can be easily and reliably attached to the shaft without tension occurring in the screw due to an interference fit.
  • the process of material displacement such. B. crushing or rolling can be used locally at one end of the screw and are easy to process.
  • the surface quality of the teeth increases, since 'is compressed, the material at the surface.
  • the material displacement not only reduces the diameter, as is possible with the cutting process, but also fills material gaps. This enables larger screw diameters to be produced.
  • the rolling process is particularly cost-effective for fastening the sleeve to the shaft, in that the rolling tool is only moved radially relative to the rotating sleeve.
  • a feed can also be set in the longitudinal direction of the sleeve, so that annular or spiral roller grooves are created. If the sleeve is thin-walled enough, the deformation of the sleeve also deforms the shaft. This creates a positive connection between the sleeve and shaft in one operation. This fixing of the sleeve can also be done by rolling the worm on the sleeve attached to the shaft.
  • the shaft with the sleeve only has to be clamped once for this process. A complete work step is saved, which enables fast and inexpensive production.
  • a shape of the armature shaft engages in a counter-shape of the Sleeve the screw diameter can be chosen arbitrarily. This makes it possible to provide a large screw diameter in order to increase the bending strength, although the screw can still be easily and securely attached to the armature shaft.
  • the armature shaft has an annular shape which corresponds to a corresponding counter-shape of the sleeve, the sleeve is secured against axial displacement over the entire circumference of the armature shaft.
  • the spiral shape of the roller blind groove also effectively prevents the screw from twisting.
  • the sleeve can favorably have a stepped thin-walled area have on which - simultaneously with the deformation of the sleeve - a deformation of the armature shaft is possible. The sleeve is then securely fixed on the shaft via this additional deformation extending into the shaft.
  • Figure 1 shows a device for adjusting one
  • Figure 2 shows an enlarged section of the screw from Figure
  • FIG. 3 shows a further embodiment according to FIG. 2. description
  • FIG. 1 shows an adjusting drive 10 with a multi-part housing 16 surrounding a motor 12 and a gear 14.
  • the motor 12 is electrically commutated and has an armature 18, a commutator 20 and a multiply mounted armature shaft 22 which extend into the Area of the transmission 14 extends.
  • a worm 26, which communicates with a worm wheel 24, is arranged on the armature shaft 22.
  • the worm 26 is formed on a sleeve 36 which is fixed on the armature shaft 22 by means of material displacement.
  • FIG. 2 shows an enlarged section of the sleeve 36 arranged on the armature shaft 22.
  • a sleeve 36 is pushed over the smooth armature shaft 22 and this is fastened to the armature shaft 22 using the rolling method.
  • the roller burnishing tools consist of circular, rotating disks of a certain thickness, which move radially onto the armature shaft with the sleeve.
  • the material of the sleeve is deformed in such a way that it presses a shape 38 into the armature shaft 22, which is positively enclosed by the counter-shape 40 generated in the sleeve 36.
  • the wall of the sleeve 36 deforms such that a toothing 37 is formed on the outer surface thereof. If the wall of the sleeve 36 is relatively thin, the surface of the armature shaft 22 is deformed at the same time, so that the armature shaft 22 has formations 38 over the entire area of the screw 26, with which the counter-formations 40 of the sleeve 36 or the screw 26 engage in a form-fitting manner.
  • the wall thickness 48 of the original sleeve 36 is so large that when the screw 26 is formed by means of material displacement, no formations 38 v and counter-formations 40 'are produced.
  • this has at its one end 50 a thin-walled area 52 which is offset from the worm and in which the wall thickness 54 is selected such that a shape 38 with a corresponding shape is selected by means of material displacement Counterforming 40 can be generated.
  • the worm 26 is placed on the thick-walled area of the sleeve 36 molded on before the sleeve 36 is arranged on the armature shaft 22. Due to the large wall thickness 48 of the sleeve 36, the sleeve 36 has no counter-formings 40 ′′ on its inside in the area of the screw 26.
  • the sleeve 36 is then applied to the armature shaft 22 and by means of material displacement in the offset, thin-walled area 52, for example by squeezing or rolling, a shape 38 is formed, into which a counter-shape 40 engages in a form-fitting manner.
  • the formation 38 with the counter-formation 40 at the other end of the sleeve 36 towards the end face 29 of the armature shaft 22.
  • Their concrete shape and number are also variable and depend, for example, on the material displacement tool. So z. B. in the crushing process, the counter-formation 40 and the formation 38 are not formed over the entire circumference of the shaft 22.
  • the method according to the invention for producing a shaft 22 is not limited to an electric drive motor (12) for adjusting components in the motor vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gears, Cams (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Gear Transmission (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Procédé permettant de fabriquer un arbre (22) et dispositif comportant un arbre (22) de ce type, en particulier un arbre (22) d'induit d'un entraînement électromoteur (12). Selon la présente invention, ledit arbre (22) d'induit possède, au moins en un site, un évidement (38, 38') dans lequel s'emboîte par liaison de forme une partie saillante complémentaire (40, 40') du manchon qui maintient le manchon (36) axialement et le rend solidaire en rotation.
EP02767121A 2001-09-22 2002-08-23 Procede permettant de fabriquer un arbre dote d'un manchon et dispositif comportant un arbre de ce type Withdrawn EP1429878A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10146748 2001-09-22
DE2001146748 DE10146748B4 (de) 2001-09-22 2001-09-22 Verfahren zum Herstellen einer Ankerwelle eines elektrischen Antriebs
PCT/DE2002/003090 WO2003026814A1 (fr) 2001-09-22 2002-08-23 Procede permettant de fabriquer un arbre dote d'un manchon et dispositif comportant un arbre de ce type

Publications (1)

Publication Number Publication Date
EP1429878A1 true EP1429878A1 (fr) 2004-06-23

Family

ID=7699912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02767121A Withdrawn EP1429878A1 (fr) 2001-09-22 2002-08-23 Procede permettant de fabriquer un arbre dote d'un manchon et dispositif comportant un arbre de ce type

Country Status (3)

Country Link
EP (1) EP1429878A1 (fr)
DE (1) DE10146748B4 (fr)
WO (1) WO2003026814A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101917094B (zh) * 2010-07-20 2013-01-02 上海博泽电机有限公司 转子轴加工方法
DE102017220460A1 (de) * 2017-11-16 2019-05-16 Robert Bosch Gmbh Schnecke bzw. Schraubritzel aus Einzelteilen mit oder ohne globoidischer Verzahnung
DE102018217617A1 (de) * 2018-10-15 2020-04-16 Robert Bosch Gmbh Verfahren zum Herstellen einer Getriebeschnecke, die insbesondere auf einer Ankerwelle angeordnet ist, sowie eine solche Getriebeschnecke
DE102022202822A1 (de) 2022-03-23 2023-09-28 Robert Bosch Gesellschaft mit beschränkter Haftung Getriebeschnecke, eine Getriebe-Antriebseinheit beinhaltend eine Getriebeschnecke, sowie Verfahren zur Herstellung einer solchen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313172A (en) * 1961-11-03 1967-04-11 Ulrich Bros Inc Worms for worm and worm wheel assembly and method of forming the same
DE1575617A1 (de) * 1966-07-28 1972-03-02 Rau Swf Autozubehoer Gewindeschnecke
GB1221321A (en) * 1968-01-10 1971-02-03 Brown Gear Ind An improvement in or relating to worm gearing
DE3411396A1 (de) * 1984-03-28 1985-10-10 Iveco Magirus AG, 7900 Ulm Schneckengetriebe
AT393980B (de) * 1988-06-20 1992-01-10 Boehler Gmbh Verfahren zur herstellung von verbundstahlwerkstuecken und verbundstahlwerkstueck
JP2521403Y2 (ja) * 1991-06-04 1996-12-25 株式会社ミツバ ウオーム減速機付小型モータ
DE4126026A1 (de) * 1991-08-06 1993-02-11 Swf Auto Electric Gmbh Welle mit angeformter schnecke und fraeser zur herstellung der schnecke
DE29702525U1 (de) * 1997-02-14 1998-06-10 Robert Bosch Gmbh, 70469 Stuttgart Vorrichtung zum Verstellen von zu einem Kraftfahrzeug gehörenden Bauteilen
DE19916998A1 (de) * 1999-04-15 2000-10-19 Bosch Gmbh Robert Verfahren zur Anbringung einer Schnecke an einer Ankerwelle eines Ankers eines Elektromotors und mit dem Verfahren hergestellter Anker
DE10030353A1 (de) * 2000-02-28 2001-08-30 Bosch Gmbh Robert Verfahren zum Herstellen einer Welle sowie Vorrichtung beinhaltend eine solche Welle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03026814A1 *

Also Published As

Publication number Publication date
DE10146748A1 (de) 2003-04-10
WO2003026814A1 (fr) 2003-04-03
DE10146748B4 (de) 2014-12-24

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