WO1990016108A1 - Dispositif servant a exercer une precharge sur le roulement a rouleaux d'un moteur - Google Patents

Dispositif servant a exercer une precharge sur le roulement a rouleaux d'un moteur Download PDF

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Publication number
WO1990016108A1
WO1990016108A1 PCT/JP1990/000717 JP9000717W WO9016108A1 WO 1990016108 A1 WO1990016108 A1 WO 1990016108A1 JP 9000717 W JP9000717 W JP 9000717W WO 9016108 A1 WO9016108 A1 WO 9016108A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing
motor
preload
flange
spring
Prior art date
Application number
PCT/JP1990/000717
Other languages
English (en)
Japanese (ja)
Inventor
Kosei Nakamura
Yukio Katsuzawa
Michi Masuya
Yasuyuki Nakazawa
Original Assignee
Fanuc Ltd
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 Fanuc Ltd filed Critical Fanuc Ltd
Publication of WO1990016108A1 publication Critical patent/WO1990016108A1/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
    • F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
    • F16C25/06—Ball or roller bearings
    • F16C25/08—Ball or roller bearings self-adjusting
    • F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
    • 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
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
    • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
    • 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
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
    • F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
    • 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
    • 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
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring

Definitions

  • the present invention relates to a device for applying a preload to a rolling bearing of a motor.
  • the present invention relates to a device for rotating 800,000 or more in D » n value ((bearing inner diameter + bearing outer diameter) Z 2 X rotation speed) by grease lubrication or the like. It can be suitably used for high-speed rotation motors.
  • FIG. 2 is an explanatory view showing one example of a conventional high-speed rotation motor.
  • the overall structure is such that a rotor R is mounted in a main body in which a stator S is sandwiched between a front flange 3 and a bracket 2. fixed to shut off sheet 1 is inserted a shut-off sheet 1 bearing rising roller rear bearing B 2 rolling front B, and is supported by and. F is a cooling fan.
  • preload to the rolling bearing is performed by the end face of the bearing housing 5 in contact with the bearing outer ring 9 and the flange of one sensor 4.
  • a wave washer 6 is sandwiched between the inner surface 41 and the inner surface 42, and the outer ring 9 is pressed in the thrust direction (shaft axis direction) with a set pressure applied from the wave washer, thereby controlling the internal clearance of the rolling bearing. As well as controlling the temperature change, it is also countered by the spring elasticity of the wave washer.
  • the longitudinal accuracy of the motor components is the desired accuracy as a result of accumulating dimensional errors of these components because the longitudinal dimensions of the front flange, case, bracket, sensor base, etc., which are separately processed, are combined. Is difficult to secure.
  • the conventional preloading device in order to make the height of the spring (bending amount) of the wave spring (the amount of flexure) accurate, it is necessary to increase the processing accuracy of the components to be combined in the longitudinal direction or to assemble the component. It is necessary to cut off some of the components to obtain the proper working height or to set a predetermined working height by inserting a spacer. It required a lot of labor and time. Disclosure of the invention
  • the adjusting disc 7 can be freely adjusted in the thrust direction by a set screw 8 which is screwed into and out of the screw hole 43 of the sensor joint 4 supported by the bracket 2 so as to be freely inserted and removed.
  • Bearing and adjusting disc 7 Wave washer, etc. interposed between the spot bearing By means of the spring 6, the bearing preload P can be applied to the bearing outer ring 9 in an adjustable manner.
  • the working length h of the spring 6 can be freely set by adjusting the adjusting disk 7 by operating the set screw 8, so that when setting the preload applying device during motor assembly, the longitudinal dimension of each assembly member According to the measurement error, the spring working height can be set to a desired value as appropriate based on the measurement.
  • the panel working height (preload amount) can be set in accordance with the various operating speed ranges of the motor. is there. In addition, even if the motor is not completely disassembled, it is possible to reset the optimum preload P by turning the set screw while checking the bearing temperature rise.
  • the adjustment of the amount of panel deflection that is, the adjustment of the spring use height h
  • the dimensional accuracy in the longitudinal direction of the motor is not so required, and the manufacturing cost can be streamlined.
  • the spring preload amount P can be set arbitrarily at the time of assembling, it is possible to assemble various motors according to the operating speed range using mass-produced products, thereby streamlining motor manufacturing.
  • the preload amount P can be easily adjusted without completely disassembling the motor during the use process.
  • FIG. 1 is a cross-sectional view of a rolling bearing according to the present invention.
  • FIG. 2 is a schematic cross-sectional view of a motor provided with a conventional preload applying device.
  • the motor shaft 1, the rolling bearings B,, and the bearing box 5 are configured in the same manner as in the prior art, and a sensor unit 4 that slidably supports the bearing box 5 on the inner peripheral surface 40 is provided.
  • a sensor unit 4 that slidably supports the bearing box 5 on the inner peripheral surface 40 is provided.
  • four screw holes 43 are formed at equal intervals on the same circle on the flange 41 protruding in the inner circumferential direction, and the inner circumferential surface 40 is The distance from the flange inner surface 42 is larger than before.
  • the adjusting disk 7 has a sliding flange 71 on the outer periphery, and has an outer diameter dimension that is slidably fitted to the inner peripheral surface 40 of the sensor combination 4 and a wall thickness t 2 of a donut-shaped disk.
  • a sliding flange 71 on the outer periphery, and has an outer diameter dimension that is slidably fitted to the inner peripheral surface 40 of the sensor combination 4 and a wall thickness t 2 of a donut-shaped disk.
  • the preload applying device To assemble the preload applying device, place the conventional wave washer 6 on the end face S of the flange portion 5 'hanging on the bearing outer ring of the bearing box 5, and place the adjusting disc 7 on the washer. After the flange 71 is placed so that the flange 71 faces the bearing box side as shown in the figure, the sensor base 4 supports the inner peripheral surface 40 of the outer peripheral surface of the bearing box and the outer peripheral surface of the adjusting disk. The height h of the spring (wave washer), that is, the dimension L from the outer end surface of the bearing to the outer surface of the adjustment disk (the thickness of the flange of the flange + the thickness of the disk t 2 ) is measured. Then, after setting the set screw 8 in each screw hole 43 of one sensor 4 so as to obtain a predetermined value, the single sensor 4 was fixed to the bracket 2. In the figure, the line A—A is the line of action of the preload on the ball 11 o
  • the wave washer 6 In the obtained preloading device, the wave washer 6 .
  • the height h used by the spring can be set with the setscrew 8 while measuring the dimensions. It is not necessary to perform adjustment, and even if the members that define the longitudinal direction of the motor (the front flange, the case, the bracket, and the sensor base) have small dimensional variations, the adjusting disc 7 can be thrust. By adjusting the gap G between the outer surface of the adjusting circle No. 7 and the inner surface of the single sensor flange 41, these dimensional errors can be absorbed without any trouble. Was.
  • the preload amount P by the spring that is, the spring operating height
  • the preload amount P by the spring can be set according to the operating speed range of the assembled motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Support Of The Bearing (AREA)

Abstract

Dans le dispositif décrit, qui sert à exercer une précharge sur le roulement à rouleaux d'un moteur et qui est particulièrement approprié pour être utilisé avec un moteur à haute vitesse, un ressort (6) destiné à exercer une précharge est disposé entre un palier de tourillon (5) placé en about contre l'anneau extérieur (9) du roulement et un disque de réglage (7), lequel est soutenu sur la bride (41) de la base du capteur au moyen de vis de calage (8), de façon à pouvoir être réglé dans la direction de la poussée, de sorte qu'une quantité P de la précharge peut être facilement réglée par réglage des vis de calage (8).
PCT/JP1990/000717 1989-06-16 1990-06-01 Dispositif servant a exercer une precharge sur le roulement a rouleaux d'un moteur WO1990016108A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1152303A JPH0322843A (ja) 1989-06-16 1989-06-16 モータのころがり軸受の予圧付与装置
JP1/152303 1989-06-16

Publications (1)

Publication Number Publication Date
WO1990016108A1 true WO1990016108A1 (fr) 1990-12-27

Family

ID=15537578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/000717 WO1990016108A1 (fr) 1989-06-16 1990-06-01 Dispositif servant a exercer une precharge sur le roulement a rouleaux d'un moteur

Country Status (2)

Country Link
JP (1) JPH0322843A (fr)
WO (1) WO1990016108A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806831A1 (fr) * 1996-05-06 1997-11-12 Carrier Corporation Dispositif pour limiter la déflexion d'un ressort
EP0777313A3 (fr) * 1995-11-30 1998-03-04 Sanyo Electric Co. Ltd Moteur et appareil électronique de montage de pièces, incorporant le moteur
WO2004040735A1 (fr) * 2002-10-30 2004-05-13 Valeo Wischersysteme Gmbh Dispositif d'entrainement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5801902A (en) * 1994-09-23 1998-09-01 Seagate Technology, Inc. Setting bearing preload utilizing thermal exspansion/contraction
JP6385286B2 (ja) * 2015-01-13 2018-09-05 Ntn株式会社 軸受予圧機構及び軸支持装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0193951U (fr) * 1987-12-15 1989-06-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0193951U (fr) * 1987-12-15 1989-06-21

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0777313A3 (fr) * 1995-11-30 1998-03-04 Sanyo Electric Co. Ltd Moteur et appareil électronique de montage de pièces, incorporant le moteur
EP0806831A1 (fr) * 1996-05-06 1997-11-12 Carrier Corporation Dispositif pour limiter la déflexion d'un ressort
US5719454A (en) * 1996-05-06 1998-02-17 Carrier Corporation Spring life improvement
WO2004040735A1 (fr) * 2002-10-30 2004-05-13 Valeo Wischersysteme Gmbh Dispositif d'entrainement

Also Published As

Publication number Publication date
JPH0322843A (ja) 1991-01-31

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