EP3942191A1 - VERFAHREN ZUM HERSTELLEN EINER DICHTUNGSLAUFFLÄCHE AN EINEM LAGERRING SOWIE GROßWÄLZLAGER - Google Patents
VERFAHREN ZUM HERSTELLEN EINER DICHTUNGSLAUFFLÄCHE AN EINEM LAGERRING SOWIE GROßWÄLZLAGERInfo
- Publication number
- EP3942191A1 EP3942191A1 EP20710943.0A EP20710943A EP3942191A1 EP 3942191 A1 EP3942191 A1 EP 3942191A1 EP 20710943 A EP20710943 A EP 20710943A EP 3942191 A1 EP3942191 A1 EP 3942191A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bearing
- running surface
- seal running
- seal
- grinding wheel
- 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.)
- Ceased
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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
- B24B19/06—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for grinding races, e.g. roller races
-
- 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
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
-
- 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
- F16C33/58—Raceways; Race rings
- F16C33/64—Special methods of manufacture
-
- 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
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6681—Details of distribution or circulation inside the bearing, e.g. grooves on the cage or passages in the rolling elements
-
- 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
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7826—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of the opposing surface cooperating with the seal, e.g. a shoulder surface of a bearing ring
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3244—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
-
- 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
- F16C2220/00—Shaping
- F16C2220/60—Shaping by removing material, e.g. machining
- F16C2220/62—Shaping by removing material, e.g. machining by turning, boring, drilling
-
- 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
- F16C2220/00—Shaping
- F16C2220/60—Shaping by removing material, e.g. machining
- F16C2220/70—Shaping by removing material, e.g. machining by grinding
-
- 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 method for producing a circumferential seal running surface on a bearing ring of a large roller bearing, the seal running surface being machined by turning in a first work step and the machined surface then being given a predetermined surface roughness by grinding using a grinding wheel.
- a sealed roller bearing is known from DE 10 2017 107 005 B3, in which the problem of leakage of lubricants, such as bearing grease, is addressed. From this publication it is known that the sealing running surfaces of a bearing ring of a large roller bearing are produced by a machining production process and a subsequent surface treatment, in particular in the form of loops.
- DE 10 2017 107 005 B3 proposes a structural design through which a comparatively large distance is achieved between the radial shaft sealing ring and the rolling elements of the roller bearing, so that the pressure load on the sealing lip of the radial shaft sealing ring is caused by hydraulic displacement effects of the Lubricant is comparatively small as a result of the rolling elements and a tendency to leak there is reduced.
- solutions have also been developed in which the lubricant is transported away from the seal towards the interior of the bearing.
- One example of such a solution approach is DE 10 2015 102 867 A1. In these solutions, the seal or seal running surface itself is not acted on, but the amount of lubricant that is present on the seal is reduced.
- the present invention is concerned with a different technical reason for the occurrence of leaks in large roller bearings than DE 10 2017 107 005 B3 and pursues a completely different approach than DE 10 2015 102 867 A1.
- the rotation of the bearing can exert a conveying effect on the lubricant when the seal running surface has a certain surface structure which, when the bearing rotates, produces a conveying effect on the lubricant from the inside of the bearing outwards. Recognizing this hitherto unrecognized problem is an essential contribution to the present invention.
- the seal running surface is first machined by turning.
- a surface structure can be introduced into the seal running surface via the rotating tool, which surface structure promotes or causes an escape of lubricant from the bearing when the bearing is rotating.
- a helical surface structure can be formed which, when the bearing is rotating, acts like a kind of screw conveyor on the lubricant and conveys it against the seal and out of the bearing.
- the object of the invention is to provide a manufacturing method for a circumferential seal running surface on a bearing ring of a large roller bearing that leads to large roller bearings with improved tightness.
- the object of the invention is also to specify a large roller bearing that has improved tightness.
- An essential part of the realization of the present invention lies in the knowledge that by machining the seal running surface by turning, a certain surface structure can be introduced into the seal running surface, through which a conveying effect is exerted on the lubricant when the bearing rotates.
- a further important finding when the present invention came about is that the conveying effect of the seal running surface is not or at least not completely canceled by the grinding that follows the turning. It is true that the surface treatment of the seal running surface by grinding following the machining by turning can bring its surface roughness to the required values, which are necessary for problem-free interaction with the seal. However, even with permissible roughness values of the seal running surface that are within the tolerance values, the above-described conveying effect on the lubricant can be maintained.
- the grinding wheel to be used for grinding executes an oscillating movement relative to the seal running surface during grinding, the oscillating movement covering the entire width of the seal running surface, and wherein the oscillating movement of the grinding wheel takes place in such a way that a surface structure introduced into the seal running surface by the rotation, through which lubricant escapes from the interior of the bearing during the rotation of the bearing, is at least neutralized.
- the inventive oscillation movement of the grinding wheel takes place alternately with a feed movement of the grinding wheel.
- the grinding wheel is fed to the surface to be ground (feed movement), then the grinding wheel is moved in an oscillating manner transversely to the direction of the feed movement, in particular perpendicular to the direction of the feed movement.
- the grinding wheel is then advanced in a further infeed movement in the direction of the surface to be ground, and then moved again in an oscillating manner.
- the feed movement takes place in the range of 1 / 1000-10 / 1000 mm, ideally in the range of 2 / 1000-5 / 1000 mm.
- the oscillation movement takes place transversely to the direction of the infeed movement, preferably perpendicular to the direction of the infeed movement of the grinding wheel.
- a surface structure is introduced into the seal running surface by grinding with the grinding wheel, which counteracts any leakage of lubricant from the interior of the bearing during the rotation of the bearing. In this way, leakage of lubricant is actively counteracted.
- a diffuse surface can be ground for a clean seal between the surface and the sealing lip. This is particularly possible with pivot bearings.
- an angle enclosed between an axis of rotation of the grinding wheel and a plane containing the seal running surface can be changed.
- different surface structures can be introduced into the seal running surface by grinding.
- the invention is based on a large roller bearing with a first bearing ring, a second bearing ring, a seal which is effective between the first and the second bearing ring and seals the bearing from the environment, with a seal running surface being formed on the bearing ring which cooperates with a sealing lip of the seal, the seal running surface having a predetermined surface roughness, and a lubricant being provided in the interior of the bearing.
- the seal running surface has a surface structure which, when the bearing rotates, exerts a conveying effect on the lubricant that is directed away from the seal towards the interior of the bearing.
- FIG 3 shows the grinding method according to the invention in a third embodiment of the invention.
- FIG. 1 shows schematically, according to a first embodiment of the invention, the arrangement of the grinding wheel 2 relative to a sealing running surface 1.
- the grinding wheel 2 rotates about an axis of rotation R.
- the oscillatory movement according to the invention of the grinding wheel 2 relative to the seal running surface 1 is indicated by the double arrow 5.
- the infeed of the grinding wheel 2 takes place in the horizontal direction and thus in a direction perpendicular to the perpendicularly aligned seal running surface 1.
- the angle enclosed between the axis of rotation R of the grinding wheel 2 and the plane E containing the seal running surface 1 is infinite in the illustrated embodiment of FIG. 1, ie the axis of rotation R and the plane E are parallel to one another.
- the orientation of the grinding wheel 2 and / or the sealing running surface 1 can be changed in such a way that the angle enclosed by the axis of rotation R and the plane E is changed.
- this angle By changing this angle, different surface structures can be introduced into the seal running surface 1 by grinding with the grinding wheel 2.
- the seal running surface can also be ground in the area of its edges in this way.
- Fig. 2 shows schematically a second embodiment of the invention.
- a profiled grinding wheel 2 is used.
- the double arrow 3 indicates the infeed movement of the grinding wheel 2 towards the workpiece 4.
- the double arrow 5 also indicates the oscillating movement of the grinding wheel 2, which it executes relative to the seal running surface 1.
- the angle enclosed between the axis of rotation R and the plane E is 45 °. This angle can be changed by changing the orientation or adjustment of the grinding wheel 2 and / or changing the orientation of the seal running surface 1. By changing this angle, different surface structures can be introduced into the seal running surface 1 by grinding with the grinding wheel 2.
- Fig. 3 shows a third embodiment of the invention.
- the surface of the seal running surface 1 to be ground is oriented horizontally here, not vertically as in FIG. 1 and 2.
- the comparison of the embodiment according to FIG. 3 with the embodiments according to FIGS. 1 and 2 shows that the seal running surface 1 can have different spatial positions.
- the grinding wheel 2 can also be wider than the surface to be ground.
- the grinding wheel 2 is wider than the surface to be ground itself, particularly in the case of narrower sealing surfaces 1.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Manufacturing & Machinery (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019203602.3A DE102019203602A1 (de) | 2019-03-18 | 2019-03-18 | Verfahren zum Herstellen einer Dichtungslauffläche an einem Lagerring sowie Großwälzlager |
BE20195164A BE1027126B1 (de) | 2019-03-18 | 2019-03-18 | Verfahren zum Herstellen einer Dichtungslauffläche an einem Lagerring sowie Großwälzlager |
PCT/EP2020/056974 WO2020187793A1 (de) | 2019-03-18 | 2020-03-13 | VERFAHREN ZUM HERSTELLEN EINER DICHTUNGSLAUFFLÄCHE AN EINEM LAGERRING SOWIE GROßWÄLZLAGER |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3942191A1 true EP3942191A1 (de) | 2022-01-26 |
Family
ID=69804915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20710943.0A Ceased EP3942191A1 (de) | 2019-03-18 | 2020-03-13 | VERFAHREN ZUM HERSTELLEN EINER DICHTUNGSLAUFFLÄCHE AN EINEM LAGERRING SOWIE GROßWÄLZLAGER |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3942191A1 (de) |
CN (1) | CN113597517A (de) |
WO (1) | WO2020187793A1 (de) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2488178A1 (fr) * | 1980-08-07 | 1982-02-12 | Procedes Machines Speciales | Dispositif de superfinition de pieces cylindriques par pierrage pour la realisation de rainures helicoidales microscopiques appelees microturbines |
JPS61500538A (ja) * | 1983-11-30 | 1986-03-27 | フエデラル−モガル コ−ポレ−シヨン | いずれの回転方向でも流体流動の方向の実質的に釣合つた軸の製作 |
US4856235A (en) * | 1983-11-30 | 1989-08-15 | Federal-Mogul Corporation | Method of making a bi-directional wear sleeve |
JPH08254213A (ja) * | 1995-03-17 | 1996-10-01 | Koyo Seiko Co Ltd | ウォ−タポンプ用軸受の密封装置 |
CN1223609A (zh) * | 1996-05-23 | 1999-07-21 | 欧文军克机械工厂有限公司 | 对具有凹腹的凸轮进行非圆形磨削的方法和装置 |
JPH10128647A (ja) * | 1996-10-29 | 1998-05-19 | Toyo A Tec Kk | バリ取り方法及び該バリ取り方法に使用する研削砥石のバリ取り構造 |
JP2000153435A (ja) * | 1998-11-16 | 2000-06-06 | Kawasaki Steel Corp | 丸棒鋼の手入方法及び装置 |
JP2002301650A (ja) * | 2001-04-02 | 2002-10-15 | Honda Motor Co Ltd | 軸状部材の研削加工方法 |
JP2007162774A (ja) * | 2005-12-12 | 2007-06-28 | Nsk Ltd | 密封軸受 |
DE102015102867A1 (de) | 2015-02-27 | 2016-09-01 | Thyssenkrupp Ag | Wälzlager |
JP6991210B2 (ja) * | 2016-11-10 | 2022-01-12 | ユチンソン | シール組立体、当該組立体を備えるころ軸受及び当該組立体を製造するための方法 |
DE102017107005B3 (de) | 2017-03-31 | 2018-09-13 | Schaeffler Technologies AG & Co. KG | Abgedichtetes Wälzlager |
-
2020
- 2020-03-13 WO PCT/EP2020/056974 patent/WO2020187793A1/de unknown
- 2020-03-13 CN CN202080022185.XA patent/CN113597517A/zh active Pending
- 2020-03-13 EP EP20710943.0A patent/EP3942191A1/de not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
WO2020187793A1 (de) | 2020-09-24 |
CN113597517A (zh) | 2021-11-02 |
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