WO2009000596A1 - Flasque de palier et procédé pour sa fabrication - Google Patents

Flasque de palier et procédé pour sa fabrication Download PDF

Info

Publication number
WO2009000596A1
WO2009000596A1 PCT/EP2008/055886 EP2008055886W WO2009000596A1 WO 2009000596 A1 WO2009000596 A1 WO 2009000596A1 EP 2008055886 W EP2008055886 W EP 2008055886W WO 2009000596 A1 WO2009000596 A1 WO 2009000596A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
bearing flange
contour
flange
edge
Prior art date
Application number
PCT/EP2008/055886
Other languages
German (de)
English (en)
Inventor
Marcel Fankhauser
Gerhard Oberli
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 WO2009000596A1 publication Critical patent/WO2009000596A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • F16C35/042—Housings for rolling element bearings for rotary movement
    • F16C35/045—Housings for rolling element bearings for rotary movement with a radial flange to mount the housing
    • 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
    • F16C35/067—Fixing them in a housing
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • 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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

Definitions

  • the invention relates to a bearing flange and a method for producing a bearing flange according to the preambles of the independent claims.
  • a floating bearing can be provided from two floating bearings or storage with fixed storage and floating storage.
  • storage with fixed storage and floating storage is preferred.
  • Contrary to a widespread assumption, in particular the realization of the fixed bearing side is challenging, because the sum tolerances in industrially manufactured engines can easily lead to an imbalance of the sensitive ball bearings. This can lead to a deterioration of the efficiency of the electric motor due to the higher rotational resistance up to excessive bearing wear.
  • the invention is based on a bearing flange with a bearing seat arranged in a bearing seat and a rotation axis.
  • the bearing is overlapped on the edge by a flanged contour on its side facing away from the flange, warping or tilting of the bearing when connecting to the bearing flange is avoided.
  • the contour is preferably formed by tangential rivets until it rests positively on the edge of the bearing.
  • the bearing is held so that mechanical stresses or tilting can be avoided.
  • the bearing wear can be reduced.
  • a smooth running of the bearing can be achieved even with de caused by usual sum tolerances slight misalignment of a bearing inner ring.
  • the bearing is smooth over a wide operating range in the operational use of the bearing flange, such as in an electric motor. Over the entire temperature range, a high axial strength can be maintained.
  • the compound bearing bearing flange can be manufactured very inexpensively.
  • a bearing can be used in the bearing flange and from a bearing flange averted side of the bearing forth a punch on a bowling alley over a contour rolled and a part of the contour are radially inwardly folded so that the bearing flange is overlapped by the contour.
  • the bearing is exposed during connection to the bearing flange only low loads.
  • a bearing outer ring does not have to apply any counterforce to the forming force during the connection.
  • the bearing flange may have an outer peripheral contour, which tapers in the axial direction, starting from an edge of greater circumference. It is favorable if the contour can be rounded in the axial direction.
  • the bearing flange can be connected for example with a motor housing by the edge of the motor housing is also connected with tangential rivets form-fitting with the bearing flange. The rounded contour forms the riveting surface. For a tight encapsulation of the motor housing is possible.
  • a shoulder can be arranged concentrically to the axis of rotation, this can advantageously serve as a bearing for the motor housing.
  • the tightness of the encapsulation can be further improved.
  • the bearing is inserted into the bearing flange and a Nietstempel on a bowling alley from a Lagerflanschabgewandten side rolls over a contour and a part of the contour is radially inwardly folded so that the bearing flange is overlapped edge of the contour , Since the connection from bearing to bearing flange is achieved by a form-fit produced by tangential rivets, only a minimal axial bearing load during the Tangentialnietens.
  • a good process control is possible if the riveting tool can continuously drive on the contour with controlled feed and contact pressure.
  • the compound itself has a small length, since the contour in the final state protrudes only slightly from the camp.
  • Electric machine tool in particular a power tool with a striking and / or rotationally driven insert tool. Due to the design-related temperature resistance of the bearing-Lagerflanschforestry the high-quality electric motor has properties that are superior to other electric motors. The preferred power tool is correspondingly robust and reliable. Of course, conceivable are other uses of the bearing flange. - A -
  • Fig. 1a is a longitudinal section through a preferred bearing flange for a fixed bearing prior to insertion of a bearing;
  • Fig. 1b is a plan view of the bearing flange of Fig. 1a;
  • Figure 2 is a longitudinal section through a preferred bearing flange for a fixed bearing after the inclusion of the bearing in the bearing flange.
  • Fig. 3 is a longitudinal section through another preferred bearing flange for a
  • FIG. 4 shows a preferred power tool.
  • FIGS. 1 a and 1 b show a longitudinal section through and a plan view of a first preferred bearing flange 10, wherein the bearing flange 10 is designed for a fixed bearing.
  • the bearing flange 10 has a first side 12, which faces in the mounted state, for example, an electric motor and a second side 14, which faces outward in the mounted state.
  • a bearing with a rotation axis 50 can be used in a bearing seat 16.
  • the bearing seat 16 is open to the first side 12.
  • a nozzle 28 extends away, which can preferably serve to guide a shaft.
  • the bearing flange 10 has a rounded contour 24, which tapers towards the second side 14 and ends in a shoulder 26. This can for example serve as a stop in the preparation of a connection between a housing, not shown, and the bearing flange 10.
  • connection can preferably be effected by means of tangential rivets.
  • other connection methods are also conceivable.
  • Diametrically opposite two edge notches 30 are arranged.
  • the notches 30 are advantageously used for torque transmission between the bearing flange 10 and a motor housing of the electric motor, which is connected to the bearing flange 10.
  • a gearbox can be flanged to the bearing flange 10 by means of face screws, which can be introduced into unspecified holes in the bearing flange 10.
  • the notches 30 advantageously increase the holding force, which is applied without notches 30 in a preferred Tangentialniettress between the motor housing and bearing flange 10 by means of frictional engagement.
  • a ring 20 outwardly away, which has at its free end a contour 22 which tapers in the longitudinal direction from the outside inwards.
  • FIG. 2 shows the bearing flange 10 of Fig. 1a with now inserted bearing 40 having an axis of rotation 50.
  • FIG. 2 shows the bearing flange and
  • FIG. 3 shows an alternative embodiment of the bearing flange 10 without sockets on the second side 14.
  • One side 42 of the bearing 40 has outwardly out of the bearing seat 16 in the direction of the ring 20th
  • the contour 22 of the ring 20 is now folded radially inwards and engages over the bearing 40 on its outer side 42 edge side, in particular a bearing outer ring.
  • the bearing 40 is held securely and distortion-free in the bearing seat.
  • the forming process follows the contour 22 of the ring 20.
  • the forming process is preferably a tangential riveting.
  • tangential riveting a flat riveting punch rotates on the side 12 of the bearing flange 10 on a bowling alley whose cone tip is located on the axis of rotation 50 of the bearing 40. By means of a controlled feed the riveting punch is continuously moved to the bearing flange 10 and thus to the contour 22.
  • the contour 22 is thereby "pushed in” continuously into the bearing seat 16.
  • the contour 22 encompasses the bearing 40 in a form-fitting manner The reshaping is continued until the previously projecting contour 22 no longer protrudes substantially from the end face of the bearing flange 10 set the exact end point of the forming.
  • FIG. 4 shows a preferred power tool 1 10 for battery or mains operation in the form of a power tool 110 with a striking and / or rotationally drivable insert tool 1 12.
  • the power tool 1 10 has a preferred electric motor 100 with an air gap winding, wherein a bearing flange with a Fixed bearing of the electric motor 100 was prepared in the manner described.
  • the bearing thus produced is characterized above all by a low rotational resistance and a low bearing wear, since the bearing can be connected by tangential rivets without tension or tilting with the bearing flange.
  • the electric machine tool 1 10 may in particular be a highly stressable power tool 1 10, such as an industrial screwdriver, a cordless screwdriver or a hammer drill.
  • bearing flange can also be used for other components.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Mounting Of Bearings Or Others (AREA)

Abstract

L'invention concerne un flasque de palier présentant un palier (40) disposé dans un siège de palier (16) et un axe de rotation (50). Selon l'invention, le palier (40) est recouvert en bordure, sur sa face (42) opposé eau flasque de palier, par le matériau du flasque de palier (10).
PCT/EP2008/055886 2007-06-27 2008-05-14 Flasque de palier et procédé pour sa fabrication WO2009000596A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007029742A DE102007029742A1 (de) 2007-06-27 2007-06-27 Lagerflansch und Verfahren zur Herstellung eines Lagerflanschs
DE102007029742.6 2007-06-27

Publications (1)

Publication Number Publication Date
WO2009000596A1 true WO2009000596A1 (fr) 2008-12-31

Family

ID=39713929

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/055886 WO2009000596A1 (fr) 2007-06-27 2008-05-14 Flasque de palier et procédé pour sa fabrication

Country Status (2)

Country Link
DE (1) DE102007029742A1 (fr)
WO (1) WO2009000596A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015220052A1 (de) * 2015-10-15 2017-04-20 Continental Automotive Gmbh Abstützanordnung eines Lagerelements an einem Bauteil einer elektrischen Maschine sowie Verfahren zum Herstellen einer solchen Abstützanordnung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3913176A1 (de) * 1989-04-21 1990-10-25 Licentia Gmbh Arbeitsverfahren zur axialen und radialen fixierung von kugellagern
WO2003056197A1 (fr) * 2001-12-21 2003-07-10 Robert Bosch Gmbh Flasque pour moteur electrique, et moteur electrique correspondant
WO2006111657A1 (fr) * 2005-04-22 2006-10-26 S.N.R. Roulements Alternateur comprenant un roulement à bride de fixation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3913176A1 (de) * 1989-04-21 1990-10-25 Licentia Gmbh Arbeitsverfahren zur axialen und radialen fixierung von kugellagern
WO2003056197A1 (fr) * 2001-12-21 2003-07-10 Robert Bosch Gmbh Flasque pour moteur electrique, et moteur electrique correspondant
WO2006111657A1 (fr) * 2005-04-22 2006-10-26 S.N.R. Roulements Alternateur comprenant un roulement à bride de fixation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015220052A1 (de) * 2015-10-15 2017-04-20 Continental Automotive Gmbh Abstützanordnung eines Lagerelements an einem Bauteil einer elektrischen Maschine sowie Verfahren zum Herstellen einer solchen Abstützanordnung

Also Published As

Publication number Publication date
DE102007029742A1 (de) 2009-01-08

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