GB2076931A - A shaft mounting arrangement particularly for mounting a pinion shaft in a gearbox - Google Patents

A shaft mounting arrangement particularly for mounting a pinion shaft in a gearbox Download PDF

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Publication number
GB2076931A
GB2076931A GB8116066A GB8116066A GB2076931A GB 2076931 A GB2076931 A GB 2076931A GB 8116066 A GB8116066 A GB 8116066A GB 8116066 A GB8116066 A GB 8116066A GB 2076931 A GB2076931 A GB 2076931A
Authority
GB
United Kingdom
Prior art keywords
shaft
bearing
gear
axially
pinion
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.)
Granted
Application number
GB8116066A
Other versions
GB2076931B (en
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.)
SKF Nova AB
Original Assignee
SKF Nova AB
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 SKF Nova AB filed Critical SKF Nova AB
Publication of GB2076931A publication Critical patent/GB2076931A/en
Application granted granted Critical
Publication of GB2076931B publication Critical patent/GB2076931B/en
Expired legal-status Critical Current

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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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
    • F16H1/14—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising conical gears only
    • 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
    • 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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/06—Ball or roller 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • General Details Of Gearings (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Motor Power Transmission Devices (AREA)
  • Retarders (AREA)

Abstract

A pinion shaft (11) is mounted for rotation in a gear box (10) by two axially spaced bearings (12, 13) and carries a pinion gear (14) at one end. The first bearing (12) is located adjacent to the pinion gear (14) and allows axial movement of the shaft (11) relative to the gear box (10). The second bearing (13) is fixed axially relative to the shaft (11) and is axially movable together with its seat relative to the gear box (10). Means comprising a screw threaded portion (23) actuated by formations (24) are provided accessible from outside of the gear box (10) by which the second bearing (13) and thus the shaft (11) can be axially moved and axially held in position so allowing the pinion gear (14) to be adjusted relative to a crown wheel (15). <IMAGE>

Description

SPECIFICATION A pinion shaft mounted for rotation in a gear box This invention concerns apparatus comprising a pinion shaft mounted for rotation in a gear box.
In modern front wheel drive passenger cars with longitudinally positioned engines, the gear box and the differential gear are normally built together in a common housing. In such a construction the pinion gear, which co-operates with the crown wheel of the differential gear, is mounted directly on the secondary or output shaft of the gear box. For the gear system to function properly, the pinion gear must be correctly positioned in relation to the crown wheel.
The known positioning procedure involving accurate measurements and the use of shims is comparatively complicated, especially in a construction in which the pinion shaft is built into a gear housing and serves as the output shaft of the gear box.
In its broader aspect, the invention provides apparatus comprising a shaft mounted for rotation in an housing by two bearings, the first bearing allowing axial movement of the shaft relative to the housing, and the second bearing being fixed axially with respect to the shaft and being axially movable in a bearing seat provided by or cqnnected to the housing, and means accessible from outside of the housing by which the second bearing and thus the shaft can be axially moved and axially held in position.
In its narrower aspect, the invention provides apparatus comprising a pinion shaft mounted for rotation in a gear box by two axially spaced bearings, the pinion shaft having a pinion gear at one end and carrying one or more gear wheels between the two bearings, the first bearing being located adjacent to the pinion gear between the pinion gear and the one or more gear wheels and allowing axial movement of the pinion shaft relative to the gear box, and the second bearing being fixed axially relative to the pinion shaft and being axially movable with the pinion shaft in a bearing seat connected to or provided by the gear box, and means accessible from outside of the gear box by which the second bearing and thus the pinion shaft can be axially moved and axially held in position.
With such a construction according to the invention, the gear box and the differential gear can be assembled into a unit before adjustment of the pinion gear with respect to the crown wheel is carried out, and the adjustment can be made by simple means and will not be affected by subsequent mounting procedures. Subsequent adjustments, which may be necessary, can also be made without the gear box having to be disassembled.
The second bearing may have an outer race ring with an externally screw-threaded portion cooperating with a correspondingly screw-threaded portion of the bearing seat, and the said means may be accessible from outside of the bearing seat and enable the outer race ring to be rotated relative to the bearing seat.
An embodiment of the invention will now be described by way of example and with reference to the accompanying drawing which is a longitudinal section of the output shaft of a gear box.
The apparatus shown comprises a gear box 10 and a pinion shaft 11 mounted for rotation in the gear box by two axially spaced bearings 12 and 13. A pinion gear 14 is mounted at one end of the shaft 11 and engages the crown-sheel 15 of a differential gear. The shaft 11 is the output shaft of the gear train in the gear box 10 and carries between the two bearings 12 and 13, a number of gear wheels 16 co-operating with other gear wheels on a primary shaft (not shown).
The first bearing 12 is located adjacent to the pinion gear 14 between the pinion gear and the other gear wheels 16 and comprises a cylindrical roller bearing having an outer race ring 17 without flanges, an inner race ring 18 with flanges and secured to or integral with the shaft 11 and an annular row of cylindrical rollers 19. Such a bearing allows the shaft 11 to move axially relative to the outer race ring 17 and thus relative to the gear box 10 and to the crown wheel 15.
The second bearing 13 is a double row angular contact ball bearing having an outer race ring 20, a one piece inner race ring 21 secured to the shaft 11 and two annular rows of balls 22. Such a bearing can transmit axial as well as radial loads. The second bearing 12 is fixed axially relative to the shaft 11 and is axially movable, with the shaft, in the bearing seat.
The outer race ring 20 has an externally screwthreaded portion 23, co-operating with a correspondingly screw-threaded portion of the bearing seat, and has formations 24, for example grooves, disposed outside of the gear box 10 and accessible from outside of the gear box and the bearing seat.
The outer race ring 20 can be engaged by means of the formations 24 by a simple tool and rotated relative to the bearing seat. Rotation of the outer race ring 20 moves the second bearing 13 axially relative to the bearing seat thus causing axial movement of the shaft 11 and thus axial movement of the pinion gear 14 relative to the crown wheel 15.
A locking nut 25 is disposed on the screw-threaded portion 23 of the outer race ring 20 so that the outer race ring can be fixed at a desired position.
The bearings 12 and 13 are mounted in seats provided by the gear box 10, and the gear box and the differential gear housing are integral so that the gear train and differential gear constitute a closed unit.
The seat for the second bearing 13 may be provided by a construction connected to the gear box 10 instead of being provided by the gear box itself.
Bearings other than those described and illustrated can be used to mount the shaft for rotation, and more than two bearings can be used to mount the shaft.
Also instead of having co-operating screw threads on the outer race ring of and the bearing seat for the second bearing for axially moving the second bearing, the outer race ring can be connected to special pushing or pulling member extending through the gear box and accessible from outside of the gear box.

Claims (3)

1. Apparatus comprising a shaft mounted for rotation in an housing bytwo bearings, the first bearing allowing axial movement of the shaft relative to the housing, and the second bearing being fixed axially with respect to the shaft and being axially movable in a bearing seat provided by or connected to the housing, and means accessible from outside of the housing by which the second bearing and thus the shaft can be axially moved and axially held in position.
2. Apparatus comprising a pinion shaft mounted for rotation in a gear box by two axially spaced bearings, the pinion shaft having a pinion gear at one end and carrying one or more gear wheels between the two bearings, the first bearing being located adjacent to the pinion gear between the pinion gear and the one or more gear wheels and allowing axial movement of the pinion shaft relative to the gear box, and the second bearing being fixed axially relative to the pinion shaft and being axially movable with the pinion shaft in a bearing seat connected to or provided by the gear box, and means accessible from outside of the gear box by which the second bearing and thus the pinion shaft can be axially moved and axially held in position.
3. Apparatus substantially as herein described with reference to and as shown in the accompanying drawing.
3. Apparatus as claimed in claim 2, wherein the second bearing has an outer race ring with an externally screw-threaded portion co-operating with a correspondingly screw-threaded portion of the bearing seat, and the said means is accessible from outside of the bearing seat and enables the outer race ring to be rotated relative to the bearing seat.
GB8116066A 1980-06-03 1981-05-26 A shaft mounting arrangement particularly for mounting a pinion shaft in a gearbox Expired GB2076931B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8004118A SE8004118L (en) 1980-06-03 1980-06-03 DEVICE FOR STORAGE, SETTING AND LOADING A PIN SHIFT IN AN EXCHANGE LOAD

Publications (2)

Publication Number Publication Date
GB2076931A true GB2076931A (en) 1981-12-09
GB2076931B GB2076931B (en) 1983-10-26

Family

ID=20341115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8116066A Expired GB2076931B (en) 1980-06-03 1981-05-26 A shaft mounting arrangement particularly for mounting a pinion shaft in a gearbox

Country Status (6)

Country Link
JP (2) JPS5722444A (en)
DE (2) DE3120262A1 (en)
FR (1) FR2483555A1 (en)
GB (1) GB2076931B (en)
IT (1) IT1138366B (en)
SE (1) SE8004118L (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003054A1 (en) * 1985-11-16 1987-05-21 Zahnradfabrik Friedrichshafen Ag Process and device for setting and adjusting gear elements
US4976165A (en) * 1989-07-14 1990-12-11 Kabushiki Kaisha Kobe Seiko Sho Backlash removing mechanism for industrial robot
FR2840657A1 (en) * 2002-06-05 2003-12-12 Roulements Soc Nouvelle Bearing, e.g. for aircraft wing flap, has integral gear on outer surface of inner ring between bearing races
DE10336741B4 (en) * 2002-08-14 2005-12-29 General Motors Corp. (N.D.Ges.D. Staates Delaware), Detroit Arrangement of a continuously variable transmission (CVT) and method for axially positioning pulley elements of a CVT
WO2020053163A1 (en) * 2018-09-11 2020-03-19 Kuka Deutschland Gmbh Transmission

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3721064A1 (en) * 1987-06-26 1989-01-05 Wittenstein Manfred GAME-FREE PLANETARY GEARBOX
DE102004047534A1 (en) * 2004-09-30 2006-04-06 Adam Opel Ag gear transmission
DE102016209201A1 (en) * 2016-05-27 2017-11-30 Schaeffler Technologies AG & Co. KG Double row angular contact ball bearing, in particular for an intermediate shaft of a vehicle transmission

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE402333B (en) * 1976-12-01 1978-06-26 Skf Nova Ab DEVICE FOR AXIAL ADJUSTMENT OF A ROTARY BODY

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987003054A1 (en) * 1985-11-16 1987-05-21 Zahnradfabrik Friedrichshafen Ag Process and device for setting and adjusting gear elements
US4976165A (en) * 1989-07-14 1990-12-11 Kabushiki Kaisha Kobe Seiko Sho Backlash removing mechanism for industrial robot
FR2840657A1 (en) * 2002-06-05 2003-12-12 Roulements Soc Nouvelle Bearing, e.g. for aircraft wing flap, has integral gear on outer surface of inner ring between bearing races
DE10336741B4 (en) * 2002-08-14 2005-12-29 General Motors Corp. (N.D.Ges.D. Staates Delaware), Detroit Arrangement of a continuously variable transmission (CVT) and method for axially positioning pulley elements of a CVT
WO2020053163A1 (en) * 2018-09-11 2020-03-19 Kuka Deutschland Gmbh Transmission
CN113167370A (en) * 2018-09-11 2021-07-23 库卡德国有限公司 Transmission mechanism

Also Published As

Publication number Publication date
SE8004118L (en) 1981-12-04
JPS602044U (en) 1985-01-09
DE3120262A1 (en) 1982-04-01
GB2076931B (en) 1983-10-26
FR2483555B1 (en) 1985-03-01
FR2483555A1 (en) 1981-12-04
JPS5722444A (en) 1982-02-05
IT8121834A0 (en) 1981-05-19
DE8115175U1 (en) 1982-10-28
IT1138366B (en) 1986-09-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee