EP0253857A1 - Injection-moulded cage for roller bearings - Google Patents
Injection-moulded cage for roller bearingsInfo
- Publication number
- EP0253857A1 EP0253857A1 EP19870900797 EP87900797A EP0253857A1 EP 0253857 A1 EP0253857 A1 EP 0253857A1 EP 19870900797 EP19870900797 EP 19870900797 EP 87900797 A EP87900797 A EP 87900797A EP 0253857 A1 EP0253857 A1 EP 0253857A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- cage according
- cage
- rolling elements
- piece
- 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.)
- Withdrawn
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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3825—Ball cages formed as a flexible belt, e.g. spacers connected by a thin film
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/3831—Ball cages with hybrid structure, i.e. with parts made of distinct materials
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4611—Cages for rollers or needles with hybrid structure, i.e. with parts made of distinct materials
-
- 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
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/50—Cages for rollers or needles formed of interconnected members, e.g. chains
- F16C33/506—Cages for rollers or needles formed of interconnected members, e.g. chains formed as a flexible belt
-
- 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
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7893—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a cage or integral therewith
-
- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/10—Application independent of particular apparatuses related to size
- F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm
Definitions
- the invention relates to a cage for rolling bearings, which consists of a sprayable material.
- the object of the invention is to create a cage principle which makes it possible to produce cages in one tool or in one and the same production run, which can be used for bearings of different diameters, ie large and small bearings, with the same and the same size rolling elements .
- the aim is to design this cage principle in such a way that cages can also be formed which can be bent into a ring either in their plane or in the vertical direction thereto and which are ultimately also suitable for linear bearings.
- the task is to use a tool set to also produce cages which are suitable for small or large identical bodies or for dissimilar rolling bodies.
- the cage consists in one piece of an endless band which is injection molded in a single tool in a manner known per se, which has recesses for receiving rolling elements and which in the area of the recesses form one has a small part covering and protruding from the plane of the band holder for the rolling elements, which can be displaced by the rolling elements to be pressed.
- the cage can be produced as an endless band and cut off in the appropriate length, and the rolling elements can be pressed in from at least one side in such a way that they are held on both sides.
- the band can then either serve for a linear bearing or can be bent together to form ring bearings of large and small diameters.
- the holders on their inside are preferably adapted to the contour of the rolling elements, so that they are already guided by the rolling elements.
- the holders on one side of the cage strip can be displaced by the rolling elements to be pressed in, whereas the holders on the other side of the strip, which narrow the recess, are designed as continuous rigid edges, so that they Contour of the rolling elements adapted e .. result in an even better rolling element guidance.
- good rolling element guidance ensures smooth rolling of the rolling elements, increases the load capacity and reduces bearing noise.
- the relationship between material properties and strip thickness can be adapted to the respective application. If the Eand has a greater thickness, then thin points and / or slots can be provided in the webs between the cutouts, so that cage strips of this type can also be bent out of their plane to form a ring.
- the cage band in its plane to form a ring band if the slots open outward in a wedge shape.
- German PS 804 737 proposed to produce a cage for rolling elements from a plastic by pressing or casting.
- the one- or two-part cage is made as a ring, so that if you put this proposal into practice, different tools would be required for each type of bearing and size.
- This template is therefore not suitable for even solving the objects of the invention even approximately.
- DE AS 1 shows that it is just as common in the plastics industry to manufacture complicated and endless parts (by the meter) in tools with sliders of all kinds. 198 990.
- the procedure is such that part of a band or the like. pre-injected and the next part is injected in the same tool.
- This DE-AS thus does not disclose a cage for - in the sense of this word - bearing, but rather a cage for sliding bodies, in which neither precision nor low noise are important.
- the invention also opens up the possibility of producing different types of bearings in a basic tool by using different tools, and exchanging the matrix and patrix of one cage strip for another, so that, in particular in the case of smaller series, only some of the tools have to be replaced.
- 1 is a cage belt for a ball bearing
- FIG. 1a is a section along a-a of Fig. 1,
- FIG. 1b shows a section according to b-b of FIG. 1,
- FIG. 3 is a perspective view of the tape of FIG. 1st
- All cage belts are manufactured by the meter so that the respective tool is not completely filled with sprayable material at the start of production, so that during the first spraying operation only about a part of the cage belt, for example four fifths of the tool length, is discharged for spraying. Precautions are taken to ensure that the rear part (fifth) in the production process remains below the required cage strip thickness so that the next spraying process is carried out on this strip. piece of molding compound can be sprayed on. Every further spraying process takes place after most of the finished sprayed strip part has been pushed out of the tool.
- FIGS. 1 and 3 An endless ball bearing cage belt produced in this way is shown in FIGS. 1 and 3 in two different versions.
- a cage strip 1 with only limited rolling element guidance is shown in FIGS. 1 a, 1 c and 3 and in FIG. 1 to the right end thereof. It has recesses as ball holders 10 and on both sides beyond its level and beyond the recesses, designed as elastic fingers 11 holders for the balls 2, which nevertheless provide sufficient support and a certain amount of guidance when the balls 2 are inserted while they are running the inner contour of which is adapted to the circumference of the sphere.
- this cage strip 1 can be designed as shown in FIG. 1a and the associated part of FIG. 1.
- the cage strip 1 is particularly suitable for linear bearings.
- grooves 14 are provided in the webs 13, then it is also suitable for ring bearings because it can be bent out of its plane into a ring. In both cases, it is cut from the endless belt to the required length and either stretched inserted in the linear raceways or bent into a ring. In this case, the two opposing ends can be molded together in the tool itself.
- the cage strip can have sufficient rigidity due to the appropriate choice of material and / or wall thickness.
- FIGS. 2 and 2a show a cage strip produced in the same way, which is designed for cylindrical rollers, but is not limited to such rolling elements. In contrast to the example described above, it is designed in such a way that, although it is produced as a linear endless belt, it is bendable in its plane to form a ring.
- slots 16 which, depending on the diameter of the ring to be formed, are more or less open to the outside.
- the recesses 10 are adapted to the contour of cylindrical rollers, the rolling element guides are also denoted by 12. On the opposite side, not recognizable, narrow and slightly arched edges extending into the recesses 10 are provided to press in the cylindrical rollers.
- Grooves 15 can also be provided in this cage belt, into which a wire 3, a spring 30 or a seal 31 can be inserted.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Une bande sans fin (1) pour cages de paliers à roulement de toutes sortes est produite par injection en tant que bande sans fin (1), coupée dans le sens de la longueur et peut être directement utilisée comme palier linéaire ou, après pliage, comme palier annulaire. L'avantage de cette bande réside dans le fait que l'on peut la façonner avec des logements, tels que des dispositifs de fixation, de préférence avec des glissières unilatérales (11) de guidage du corps du palier, et qu'elle s'adapte à des paliers de n'importe quelle grandeur. Pour renforcer la bande à cages, une rainure (15) peut recevoir un fil métallique (3), un ressort (30) ou un bourrage (31).An endless strip (1) for rolling bearing cages of all kinds is produced by injection as an endless strip (1), cut lengthwise and can be directly used as a linear bearing or, after folding, as an annular bearing. The advantage of this strip lies in the fact that it can be shaped with housings, such as fixing devices, preferably with unilateral slides (11) for guiding the bearing body, and that it adapts to bearings of any size. To reinforce the cage strip, a groove (15) can receive a metal wire (3), a spring (30) or a stuffing (31).
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8601058 | 1986-01-17 | ||
DE8601058U | 1986-01-17 | ||
DE3635261 | 1986-10-16 | ||
DE19863635261 DE3635261A1 (en) | 1986-01-17 | 1986-10-16 | FROM A MATERIAL SPRAYABLE CAGE FOR ROLLER BEARINGS |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0253857A1 true EP0253857A1 (en) | 1988-01-27 |
Family
ID=25848509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19870900797 Withdrawn EP0253857A1 (en) | 1986-01-17 | 1987-01-15 | Injection-moulded cage for roller bearings |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0253857A1 (en) |
DE (1) | DE3635261A1 (en) |
WO (1) | WO1987004502A1 (en) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3629173A1 (en) * | 1986-08-28 | 1988-03-10 | Kabus Horst Maschf | CROSS ROLLER BEARING |
DE3722651A1 (en) * | 1987-07-09 | 1989-01-19 | Kugelfischer G Schaefer & Co | ROLLING BEARING CAGE |
DE3824191A1 (en) * | 1988-07-16 | 1990-01-18 | Werner Jacob | CONVERSION FOR ROLLING BODIES |
FR2636689B1 (en) * | 1988-09-21 | 1992-10-16 | Simme | IMPROVEMENTS ON BALL TRANSMISSION DEVICES IN PARTICULAR OF THE FLEXIBLE SHEATH TYPE |
DE3936451A1 (en) * | 1989-11-02 | 1991-05-08 | Skf Gmbh | ROLLING BEARING CAGE |
DE4025011A1 (en) * | 1990-08-07 | 1992-02-13 | Werner Dipl Ing Jacob | BALL GUIDE |
DE4103672C2 (en) * | 1991-02-07 | 1998-11-26 | Schaeffler Waelzlager Ohg | Cage for guiding the rolling elements of a rotating shoe for a linear guide |
DE4229136C1 (en) * | 1992-09-01 | 1994-03-03 | Krupp Ag Hoesch Krupp | Ball- or roller bearing cage - incorporates separate cage segments articulated together on square or circular-section wires |
DE4322761A1 (en) * | 1993-07-08 | 1995-01-12 | Schaeffler Waelzlager Kg | Rolling contact bearing |
NL1001860C2 (en) * | 1995-12-08 | 1997-06-10 | Skf Ind Trading & Dev | Rolling bearing cage. |
JPH1122727A (en) * | 1997-07-01 | 1999-01-26 | Thk Kk | Rolling element coupling body, linear guide device using the body, and rolling body screw device |
DE19824250B4 (en) | 1998-05-29 | 2012-05-03 | Bosch Rexroth Mechatronics Gmbh | A roller chain |
US6364086B1 (en) | 1998-05-29 | 2002-04-02 | Rexroth Star Gmbh | Chain of rolling elements chain arrangement |
DE19901282C1 (en) | 1999-01-15 | 2000-08-03 | Skf Linearsysteme Gmbh | Injection molding tool for molding linear bearing cage has projections on each tool half which form ball or roller holding noses in molded cage |
DE19939920A1 (en) * | 1999-08-23 | 2001-03-01 | Grundig Ag | Bearing element |
DE10054236A1 (en) * | 2000-11-02 | 2002-07-25 | Okin Ges Fuer Antriebstechnik | telescopic arm |
DE20101760U1 (en) | 2001-02-01 | 2002-06-13 | Rexroth Star Gmbh | A roller chain |
DE102004055392A1 (en) * | 2004-11-17 | 2006-05-18 | Schaeffler Kg | Linear roller bearing for e.g. conveyor has housing with inner housing section made of wear-resistant synthetic material and formed with circular groove, and outer housing section made of steel and partially surrounding inner housing |
DE102009006860B4 (en) * | 2009-01-30 | 2011-02-03 | Ab Skf | Rolling bearing cage |
FR2946721B1 (en) * | 2009-06-12 | 2013-07-05 | Skf Ab | STOPPER OF SUSPENSION AND MOTOR VEHICLE EQUIPPED WITH SUCH A FAST. |
EP2659153B1 (en) * | 2010-12-27 | 2017-07-19 | The Timken Company | Cage for a roller bearing assembled from two wire rings and a plurality of stays or pins |
DE102011080167B4 (en) * | 2011-08-01 | 2013-09-19 | Aktiebolaget Skf | Bearing cage segment, bearing cage and method of making same |
DE102011089078B4 (en) * | 2011-12-19 | 2014-11-27 | Aktiebolaget Skf | Bearing cage and method for producing the same |
DE102012223317B4 (en) * | 2012-12-17 | 2015-04-23 | Aktiebolaget Skf | roller bearing |
GB2533555A (en) * | 2014-12-15 | 2016-06-29 | Skf Ab | Seal for a roller bearing having a wire cage |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2729520A (en) * | 1953-01-09 | 1956-01-03 | Smith Bearing Company Inc | Roller bearing assembly |
FR79537E (en) * | 1961-04-12 | 1962-12-14 | Roulements A Aiguilles Sa | Needle bearing cage and its manufacturing process |
DE1234455B (en) * | 1962-11-29 | 1967-02-16 | Eisenwerk Rothe Erde G M B H | Ball cage made of plastic |
DE1198990B (en) * | 1963-03-29 | 1965-08-19 | Werner & Mertz Gmbh | Process for manufacturing by injection molding, processing and, if necessary, attaching plastic parts of comparatively intricate shapes |
GB1084752A (en) * | 1965-06-19 | 1967-09-27 | Wright Howard Clayton Ltd | Improvements relating to roller, ball or the like rotary element bearing assemblies |
US3486212A (en) * | 1966-04-08 | 1969-12-30 | Textron Inc | Method of making a ball-bearing retainer |
DE1575484A1 (en) * | 1966-07-29 | 1970-01-22 | Hummel Plastic Kg | Ball mat or ball tape |
FR1528756A (en) * | 1967-04-25 | 1968-06-14 | Renault | Plastic raceway |
US3436135A (en) * | 1967-08-16 | 1969-04-01 | Nat Bearings Co | Bendable thrust bearing retainer |
DE2123188C2 (en) * | 1971-05-11 | 1982-08-05 | Industriewerk Schaeffler Ohg, 8522 Herzogenaurach | Thrust bearing cage for cylindrical rollers - has additional rings for stiffening bent flat strip in peripheral direction |
IT942964B (en) * | 1971-11-26 | 1973-04-02 | Niv Skf Officine Di Villar Per | ONE-PIECE CAGE WITH ALVEOLUS FOR ROLLER BEARINGS |
GB1404361A (en) * | 1972-01-15 | 1975-08-28 | Wireglide Bearings Ltd | Ball or roller bearings and spacing means therefor |
DE2753340A1 (en) * | 1977-11-30 | 1979-05-31 | Daimler Benz Ag | Ball or roller bearing - has seal and cage formed as separate components which may be clipped together |
-
1986
- 1986-10-16 DE DE19863635261 patent/DE3635261A1/en not_active Ceased
-
1987
- 1987-01-15 WO PCT/DE1987/000022 patent/WO1987004502A1/en not_active Application Discontinuation
- 1987-01-15 EP EP19870900797 patent/EP0253857A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO8704502A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE3635261A1 (en) | 1987-07-30 |
WO1987004502A1 (en) | 1987-07-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19870915 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17Q | First examination report despatched |
Effective date: 19880919 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19910219 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HERRMANN, ALFONS Inventor name: NICKLAS, GEORG |