GB2118640A - A combination of a support body and a pulley body and a method of assembling them - Google Patents

A combination of a support body and a pulley body and a method of assembling them Download PDF

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Publication number
GB2118640A
GB2118640A GB08310220A GB8310220A GB2118640A GB 2118640 A GB2118640 A GB 2118640A GB 08310220 A GB08310220 A GB 08310220A GB 8310220 A GB8310220 A GB 8310220A GB 2118640 A GB2118640 A GB 2118640A
Authority
GB
United Kingdom
Prior art keywords
support body
ring
bearing
groove
securing ring
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
GB08310220A
Other versions
GB2118640B (en
GB8310220D0 (en
Inventor
Manfred Brandenstein
Rudiger Hans
Herbert Dobhan
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 GmbH
Original Assignee
SKF Kugellagerfabriken 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 SKF Kugellagerfabriken GmbH filed Critical SKF Kugellagerfabriken GmbH
Publication of GB8310220D0 publication Critical patent/GB8310220D0/en
Publication of GB2118640A publication Critical patent/GB2118640A/en
Application granted granted Critical
Publication of GB2118640B publication Critical patent/GB2118640B/en
Expired 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
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
    • 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
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/63—Gears with belts and pulleys
    • 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
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H2055/366—Pulleys with means providing resilience or vibration damping

Abstract

An annular pulley body (13) is mounted on and for rotation relative to a support body (10) by a bearing (11) having a bearing ring (12) seated on the support body. The support body (10) has an abutment (15) and an annular groove (16) at opposite ends of the bearing ring (12). A securing ring (18) is disposed in the groove (16) in a radially expanded form. The securing ring (18) and the groove (16) have co-operating inclined surfaces (17, 19) such that upon contraction of the securing ring it urges the bearing ring towards the abutment. To avoid the disadvantages of a broken or split ring having an inclined surface, the securing ring (18) is endless and contracts or is caused to contract whilst it is in the groove (16). <IMAGE>

Description

SPECIFICATION A combination of a support body and a pulley body and a method of assembling them This invention concerns a combination of a support body and an annular pulley body mounted on and for rotation relative to the support body by a bearing having a bearing ring seated on the support body, and a method of assembling the combination.
Patent Specification U.S. 2509081 discloses the use of a broken or split ring having an inclined or tapered end face. The ring is used to secure axially in one direction a part mounted on a shaft or disposed in a bore. The ring is radially resiliently expanded or contracted and placed in a groove also having an inclined or tapered surface. Upon contraction or expansion of the ring towards the base of the groove, the inclined or tapered surfaces co-coperate to move the ring axially and so secure or hold a part on a shaft or in a bore.
However, the part is securely and reliably held only to the extent allowed by how easily the ring can be resiliently expanded or contracted. Particularly in the case where the part is subject to vibrations and alternating loads, which can act continuously, the part and the ring can become undesirably loosened. Furthermore the part can tilt since the ring yields particularly easily in the vicinity of the free ends. Also the ring can be forced out of the groove by a load acting against the ring and causing it to expand or contract because of the inclined or tapered surfaces.
The subject of this invention is an annular pulley body mounted on and for rotation relative to a support body by a securing ring providing a uniform axial load and which cannot become loose.
In one aspect, the invention provides in a method of assembling a combination of a support body and an annular pulley body mounted on and for rotation relative to the support body by a bearing having a bearing ring seated on the support body, the steps of fixing the bearing ring on the support body by: i) producing the support body having an abutment, a seating surface for the bearing ring and an annular groove, the seating surface being positioned between the abutment and annular groove, and the annular groove having an inclined surface converging with the axis in the direction towards the abutment; (ii) mounting the bearing-ring on the seating surface and against the abutment; and (iii) providing a securing ring in the groove, the securing ring having an inclined surface co-operating with that of the groove such that upon contraction of the securing ring it moves towards the bearing ring, wherein the securing ring is endless and it contracts or is caused to contract whilst it is in the groove.
In another aspect, the invention provides, in combination, a support body, an annular pulley body mounted on and for rotation relative to the support body by a bearing having a bearing ring seated on the support body, the support body having an abutment and an annular groove at opposite ends of the bearing ring, and a securing ring disposed in the groove and being radially expanded, the securing ring and the groove having co-operating inclined surfaces such that upon radial contraction of the securing ring, it urges the bearing ring towards the abutment, wherein the securing ring is endless.
By having an endless securing ring, there is little or no chance of it becoming loose, and the axial load on the bearing ring, caused by contraction of the securing ring and the co-operating inclined or tapered surfaces, is annular and uniform.
The method may include providing the securing ring by injection moulding of plastics into the groove.
After the bearing ring has been seated on the support body against the abutment, a mould is formed with die tools, the support body and the bearing ring about the annular groove. Plastics is injected into the mould and thus into the groove so forming an endless ring having an inclined or tapered surface. Upon cooling and / or curing of the plastics it shrinks causing the endless ring to contract radially. Upon radial contraction of the endless ring, the co-operating inclined or tapered surfaces of the endless ring and the groove cause the endless ring to force the bearing ring axially against the abutment. Moreover, the forces arising upon shrinking of the plastics cause a slight plastic deformation of the cross-section of the securing ring so that the force of the securing ring on the bearing ring is increased.
The method may include making the securing ring from an elastically deformable material, elastically deforming the securing ring and mounting it in the groove and subjecting the securing ring to treatment causing it to contract.
The securing ring is produced separately from the groove in the support body and from a material, such as a plastics, which is still slightly elastic after manufacture. After the bearing ring is seated on the support body, the prefabricated securing ring is expanded elastically, pushed on the support and into the annular groove. The securing ring contracts radially in the groove and iightly urges the bearing ring against the abutment. The securing ring in the groove can then be treated, for example, by being irradiated with ultra-violet light to completely cure the plastics and cause it to shrink and thus force the bearing ring against the abutment because of the inclined or tapered surfaces.
The method may include causing the securing ring to contract by physical, chemical (. rphysicochemical means.
According to the type of material of the securing ring means such as heat, gases and corrosive fluids may be used to cause the material to shrink and the securing ring to contract.
The invention also provides, in combination, a support body and an annular pulley body mounted on and for rotation relative to the support body by a bearing having a bearing ring seated on the support body, in which the bearing ring has been fixed on the support body by a method according to the invention.
An embodiment of the invention will now be described by way of example and with reference to the accompanying drawing which shows half of a longitudinal section through a ball bearing mounted on a support body.
In the drawing a combination is shown of a support body 10 and an annular pulley body mounted on and for rotation relative to the support body by a bearing 11. The bearing 11 comprises inner and outer race rings 12 and 13 respectively and the annular pulley body comprises the outer race ring 13.
The support body 10 has a bore with an inturned flange 14 at one end defining an opening.
At the other end, the support body 10 has an abutment in the form of an outwardly extending flange 1 5. The bearing inner ring 12 abuts the flange 1 5 and sits on a seating surface of the support body 10. The support body 10 has an annular groove 16, the seating surface being disposed between the groove and the flange 13, and the groove has an inclined or tapering conical surface 1 7 which converges with the axis in the direction towards the flange 1 5.
An endless securing ring 1 8 is provided in the groove 1 6 and also has an inclined or tapering conical surface 19, the conical surfaces 1 7 and 19 co-operating such that upon radial contraction of the ring 18 it is moved axially and forces the bearing ring 12 against the flange 1 5. The securing ring 1 8 is made of plastics and is provided by being injection moulded or cast in the groove grove 16, the bearing inner ring 12 and the support body 10 forming part of the surfaces of the mould or die. The plastics of the securing ring :18 shrinks during and/or after cooling and/or curing so that the securing ring radially contracts into the base of the groove 1 6. The endless securing ring 1 8 is not fully contracted into the groove 1 6, that is, is still slightly expanded, so that a force is maintained pressing the bearing ring 12 against the flange 1 5. The axial force is achieved partly by displacement of the securing ring 1 8, partly by plastic deformation of its cross-section as a result of the contraction during shrinking of the plastics.

Claims (8)

1. In a method of assembling a combination of a support body and an annular pulley body mounted on and for rotation relative to the support body by a bearing having a bearing ring seated on the support body, the steps of fixing the bearing ring on the support body by: (i) producing the support body having an abutment, a seating surface for the bearing ring and an annular groove, the seating surface being positioned between the abutment and annular groove, and the annular groove having an inclined surface converging with the axis in the direction towards the abutment; (ii) mounting the bearing ring on the seating surface and against the abutment; and (iii) providing a securing ring in the groove, the securing ring having an inclined surface co-operating with that of the groove such that upon contraction of the securing ring it moves towards the bearing ring, wherein the securing ring is endless and it contracts or is caused to contract whilst it is in the groove.
2. A method as claimed in Claim 1 including providing the securing ring by injection moulding of plastics into the groove.
3. A method as claimed in Claim 1 including making the securing ring from an elastically deformable material, elastically deforming the securing ring and mounting it in the groove and subjecting the securing ring to treatment causing it to contract.
4. A method as claimed in Claim 1, 2 or 3 including causing the securing ring to contract by physical, chemical or physico-chemical means.
5. In a method of assembling a combination of a support body and an annular pulley body mounted on and for rotation relative to the support body by a bearing having a bearing ring seated on the support body, the steps of fixing the bearing ring on the support body substantially as herein described with reference to and as shown in the accompanying drawing.
6. In combination, a support body and an annular pulley body mounted on and for rotation relative to the support body by a bearing having a bearing ring seated on the support body, in which the bearing ring has been fixed on the support body by a method as claimed in any preceding claim.
7. In combination, a support body, an annular pulley body mounted on and for rotation relative to the support body by a bearing having a bearing ring seated ont he support body, the support body having an abutment and an annular groove at opposite ends of the bearing ring, and a securing ring disposed in the groove and being radially expanded, the securing ring and the groove having co-operating inclined surfaces such that upon radial contraction of the securing ring it urges the bearing ring towards the abutment, wherein the securing ring is endless.
8. A combination substantially as herein described with reference to and as shown in the accompanying drawing.
GB08310220A 1982-04-16 1983-04-15 A combination of a support body and a pulley body and a method of assembling them Expired GB2118640B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE8210727 1982-04-16

Publications (3)

Publication Number Publication Date
GB8310220D0 GB8310220D0 (en) 1983-05-18
GB2118640A true GB2118640A (en) 1983-11-02
GB2118640B GB2118640B (en) 1985-10-23

Family

ID=6739091

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08310220A Expired GB2118640B (en) 1982-04-16 1983-04-15 A combination of a support body and a pulley body and a method of assembling them

Country Status (3)

Country Link
FR (1) FR2525302B1 (en)
GB (1) GB2118640B (en)
IT (2) IT1197629B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525303A1 (en) * 1982-04-17 1983-10-21 Skf Kugellagerfabriken Gmbh PEBBLE
FR2571795A1 (en) * 1984-10-11 1986-04-18 Skf Gmbh GALET-TENSIONER FOR BELT CONTROL
DE4013655A1 (en) * 1989-04-28 1990-10-31 Torrington Co SHAFT BEARING
EP1388688A2 (en) * 2002-08-08 2004-02-11 Tsudakoma Kogyo Kabushiki Kaisha rotation transmitting device and textile machinery using it
WO2010142721A1 (en) * 2009-06-12 2010-12-16 Aktiebolaget Skf Preassembled pulley device with elastic ring and method of mounting the device
DE102013102638A1 (en) * 2013-03-14 2014-09-18 Valeo Systèmes d'Essuyage Shaft, shaft assembly, method for axially mounting a bearing device on a shaft and windscreen wiper motor
GB2537378A (en) * 2015-04-14 2016-10-19 Primetals Tech Ltd Bearing system and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19739816B4 (en) * 1997-09-11 2005-07-28 Skf Gmbh Supporting body for clamping devices

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE469107A (en) * 1945-01-25
DE2104452B2 (en) * 1971-01-30 1981-03-12 Siemens AG, 1000 Berlin und 8000 München Shaft-end roller-bearing for miniature motor - has rubber washer in bearing seat pressed against outer bearing ring edge
DE2316746C3 (en) * 1973-04-04 1979-04-26 Fenaro Ferch & Co Kg, 4048 Grevenbroich Elastic roller for the pressure treatment of webs of material, in particular paper webs
DE2529913C2 (en) * 1975-07-04 1985-06-27 SKF GmbH, 8720 Schweinfurt Method for producing rollers or the like. By encapsulating one or more roller bearings with plastic and roller produced according to this method

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525303A1 (en) * 1982-04-17 1983-10-21 Skf Kugellagerfabriken Gmbh PEBBLE
FR2571795A1 (en) * 1984-10-11 1986-04-18 Skf Gmbh GALET-TENSIONER FOR BELT CONTROL
DE4013655A1 (en) * 1989-04-28 1990-10-31 Torrington Co SHAFT BEARING
EP1388688A2 (en) * 2002-08-08 2004-02-11 Tsudakoma Kogyo Kabushiki Kaisha rotation transmitting device and textile machinery using it
EP1388688A3 (en) * 2002-08-08 2005-01-19 Tsudakoma Kogyo Kabushiki Kaisha rotation transmitting device and textile machinery using it
FR2946716A1 (en) * 2009-06-12 2010-12-17 Skf Ab DEVICE FOR PULLEY HAVING PRE - CONTAINED ELASTIC RING AND DEVICE MOUNTING METHOD.
WO2010142721A1 (en) * 2009-06-12 2010-12-16 Aktiebolaget Skf Preassembled pulley device with elastic ring and method of mounting the device
CN102803770A (en) * 2009-06-12 2012-11-28 Skf公司 Preassembled pulley device with elastic ring and method of mounting the device
US9086139B2 (en) 2009-06-12 2015-07-21 Aktiebolaget Skf Preassembled pulley device with elastic ring and method of mounting the device
CN102803770B (en) * 2009-06-12 2015-12-16 Skf公司 There is the pre-assembled pulley arrangement of elastic ring and the method for this device is installed
DE102013102638A1 (en) * 2013-03-14 2014-09-18 Valeo Systèmes d'Essuyage Shaft, shaft assembly, method for axially mounting a bearing device on a shaft and windscreen wiper motor
GB2537378A (en) * 2015-04-14 2016-10-19 Primetals Tech Ltd Bearing system and method
GB2537378B (en) * 2015-04-14 2017-04-26 Primetals Tech Ltd Bearing system and method
US10184516B2 (en) 2015-04-14 2019-01-22 Primetals Technologies, Limited Bearing system and method

Also Published As

Publication number Publication date
GB2118640B (en) 1985-10-23
FR2525302B1 (en) 1986-09-19
IT8348108A0 (en) 1983-04-14
FR2525302A1 (en) 1983-10-21
IT8335749V0 (en) 1983-04-14
GB8310220D0 (en) 1983-05-18
IT1197629B (en) 1988-12-06

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Legal Events

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