GB2288444A - Production of plain bearing bushes - Google Patents
Production of plain bearing bushes Download PDFInfo
- Publication number
- GB2288444A GB2288444A GB9503654A GB9503654A GB2288444A GB 2288444 A GB2288444 A GB 2288444A GB 9503654 A GB9503654 A GB 9503654A GB 9503654 A GB9503654 A GB 9503654A GB 2288444 A GB2288444 A GB 2288444A
- Authority
- GB
- United Kingdom
- Prior art keywords
- winding
- plain bearing
- shaped
- fibres
- bearing bushes
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000004804 winding Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 7
- 239000011265 semifinished product Substances 0.000 claims description 4
- 239000007767 bonding agent Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 14
- 239000012791 sliding layer Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/04—Bearings
- B29L2031/045—Bushes therefor
Description
- -. 'I 1 2288444 PROCESS FOR THE PRODUCTION OF PLAIN BEARING BUSHES The
invention relates to a process for the production of bonded-fibre plain bearing bushes.
US 3.361.502 discloses a plain bearing bush which can be loaded both radially and axially. Plain bearing layers are applied to a supporting material which is at first flat, the layers then being processed and moved into their operational configuration by the deformation of the supporting material. That process is expensive and it must be expected that the plain bearing layers will be damaged during deformation.
It is also known to produce preferably radially loaded plain bearing bushes by the winding of plastics fibres which are impregnated with bonding agent and then cured.
It is an object of the invention to provide a process for the production of plain bearing bushes by which the bushes can be cheaply provided with radially- and axially-facing bearing surfaces without excessive rejects during manufacture.
According to the invention there is provided a process for the production of bonded-fibre plain bearing bushes having a bearing layer with radiallyand axially-facing bearing surfaces and a supporting structure bonded to the bearing layer, characterised by - winding fibres for the bearing layer so as to form an axiallyextending sleeve-shaped winding for providing the radially-facing surface; winding said fibres so as to form a flange-shaped winding for providing the axially-facing surface; winding fibres for the supporting structure over the bearing layer fibres; and curing the whole winding, impregnated with a bonding agent.
Production is performed, for example, on a mandrel having the diameter of the subsequent sliding surface. An axially extending sleeve-shaped winding of a sliding fibre impregnated with epoxy resin is applied to the mandrel, whereafter a narrow axial zone of the same fibre is wound rising radially 2 upwards, the immediate result being a sleeve-shaped winding having a flange attachment. Then in the same manner the supporting layer of a resinimpregnated glass fibre is wound which supports both the radial and the axial sliding layer. The sliding layer and supporting layer can be further processed after curing.
Advantageously, the plain bearing bush according to the invention need no longer be deformed, so that the sliding layers remain undamaged. The steady transition between the axial and radial sliding layers and the uniform transition-free connections to the supporting layer produce an overall stable and particularly durable construction.
These and further features will now be described merely by way of example with reference to the embodiment illustrated in the drawings, which show:
Fig. 1 - the winding of a semi-finished product of a number of succeeding plain bearing bushes having axial and radial sliding layers; and Fig. 2 a separated plain bearing bush as shown in Fig. 1.
Fig. 1 shows a mandrel 1 on to which a two-layer composite fibre tube is wound which in a further step is divided into individual plain bearing bushes, as shown in Fig. 2.
First of all an axially continuous winding 2, 3 of epoxy-impregnated sliding fibre is applied to the mandrel 1. The winding consists of sleeveshaped portions 2 of small wall thickness and flange-shaped portions 3 of small axial width. The entire winding is continuously wound on to the entire length of the mandrel 1. The flange-shaped portions are of tapering or beadshaped cross-section having a relatively wide base so as to give satisfactory support to the radially-outer windings of the flange-shaped portions.
In a further operational step a supporting layer 4 of epoxy-impregnated glass fibre is wound on. The winding technique is so controlled that more material is applied to the sleeve-shaped portions 2 than to the flangeshaped portions 3. In this case also winding is continuous.
The result is an intimate bonding of the layers 1, 2, 3 which, more particularly in the transition zone 5 to the flange-shaped portions 3, forms the C_ 3 necessary stability for the subsequent axial sliding layer.
When the semiAnished product has cured, individual plain bearing bushes are separated at the places 6 bound by chain lines. The result is an axial sliding layer in the form of a radial end face 7 of the individual plain bearing bushes which remains after separation, as shown in Fig. 2. The remainder 6 of the flange-shaped portion between the chain lines is removed by machining.
As shown in Fig. 2, the supporting layer has also been removed, the overall result being an L-shaped cross-section.
Each feature disclosed in this specification (which term includes the claims) andlor shown in the drawings may be incorporated in the invention independently of other disclosed andlor illustrated features.
The appended abstract as filed herewith is included in the specification by reference.
4
Claims (4)
1. A process for the production of bonded-fibre plain bearing bushes having a bearing layer with radially- and axially-facing bearing surfaces and a supporting structure bonded to the bearing layer, characterised by winding fibres for the bearing layer so as to form an axiallyextending sleeve-shaped winding for providing the radially-facing surface; winding said fibres so as to form a flange-shaped winding for providing the axially-facing surface; winding fibres for the supporting structure over the bearing layer fibres; and - curing the whole winding, impregnated with a bonding agent.
2. A process according to Claim 1, characterised by making a semi-finished product having a number of axially succeeding plain bearing bushes; separating the semi-finished product into individual plain bearing bushes at the flange-shaped windings.
3. A process according to Claims 1 or 2, characterised by the endless winding of the semi-finished product over the whole axial length, with continuous transitions between the sleeve-shaped and the flange-shaped portions.
4. A process for the production of plain bearing bushes substantially as herein described with reference to the accompanying drawings.
w, 1.
op
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4412716A DE4412716A1 (en) | 1994-04-13 | 1994-04-13 | Process for the production of plain bearing bushes |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9503654D0 GB9503654D0 (en) | 1995-04-12 |
| GB2288444A true GB2288444A (en) | 1995-10-18 |
| GB2288444B GB2288444B (en) | 1997-07-16 |
Family
ID=6515289
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9502896.5A Pending GB9502896D0 (en) | 1994-04-13 | 1995-02-15 | Process for the production of plain bearing bushes |
| GB9503654A Expired - Fee Related GB2288444B (en) | 1994-04-13 | 1995-02-23 | Process for the production of plain bearing bushes |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9502896.5A Pending GB9502896D0 (en) | 1994-04-13 | 1995-02-15 | Process for the production of plain bearing bushes |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE4412716A1 (en) |
| FR (1) | FR2718804B1 (en) |
| GB (2) | GB9502896D0 (en) |
| IT (1) | IT1281302B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010051840A1 (en) * | 2010-11-18 | 2012-05-24 | Schaeffler Technologies Gmbh & Co. Kg | bearing ring |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0307112A2 (en) * | 1987-09-11 | 1989-03-15 | Kamatics Corporation | Braided bearing and method for making a braided bearing |
| WO1994000290A1 (en) * | 1992-06-22 | 1994-01-06 | Glacier Gmbh - Deva Werke | Process for producing fibre-reinforced synthetic resin mouldings |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3873168A (en) * | 1972-12-18 | 1975-03-25 | Gen Electric | Laminated composite article with improved bearing portion |
| DE3827947A1 (en) * | 1988-08-17 | 1990-02-22 | Eagle Picher Espana | Bearing bush |
| DE4140424A1 (en) * | 1991-12-07 | 1993-06-09 | Skf Gleitlager Gmbh, 6625 Puettlingen, De | Low friction FRP bearing with seal - has outer ring, and inner low friction liner with annular concave parts, each contg. liner and fitted with before receiving shaft |
| US5288354A (en) * | 1992-08-26 | 1994-02-22 | Rexnord Corporation | Method of bonding self-lubricating fibers to an external surface of a substratum |
-
1994
- 1994-04-13 DE DE4412716A patent/DE4412716A1/en not_active Withdrawn
-
1995
- 1995-02-15 GB GBGB9502896.5A patent/GB9502896D0/en active Pending
- 1995-02-23 GB GB9503654A patent/GB2288444B/en not_active Expired - Fee Related
- 1995-03-28 IT IT95TO000239A patent/IT1281302B1/en active IP Right Grant
- 1995-03-29 FR FR9503669A patent/FR2718804B1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0307112A2 (en) * | 1987-09-11 | 1989-03-15 | Kamatics Corporation | Braided bearing and method for making a braided bearing |
| WO1994000290A1 (en) * | 1992-06-22 | 1994-01-06 | Glacier Gmbh - Deva Werke | Process for producing fibre-reinforced synthetic resin mouldings |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2288444B (en) | 1997-07-16 |
| GB9503654D0 (en) | 1995-04-12 |
| IT1281302B1 (en) | 1998-02-17 |
| ITTO950239A0 (en) | 1995-03-28 |
| DE4412716A1 (en) | 1995-10-19 |
| ITTO950239A1 (en) | 1996-09-28 |
| FR2718804A1 (en) | 1995-10-20 |
| GB9502896D0 (en) | 1995-04-05 |
| FR2718804B1 (en) | 1997-05-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19990223 |