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
  • F16C33/72—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
  • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
• • 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
  • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
• • 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
  • F16C33/62—Selection of substances
• • 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
• • 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
  • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
  • F16C33/6607—Retaining the grease in or near the bearing
  • F16C33/6618—Retaining the grease in or near the bearing in a reservoir in the sealing means
• • 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
• • 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
  • F16C2202/00—Solid materials defined by their properties
  • F16C2202/30—Electric properties; Magnetic properties
• • 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
  • F16C2361/55—Flywheel systems

Definitions

• the invention relates to a rolling bearing with an outer ring and an inner ring and distributed between these distributed over the circumference and rolling on this rolling elements.
• Such rolling bearings such as deep groove ball bearings and the like have long been known.
• insulating elements made of plastic are introduced between the outer ring and the component to be stored.
• DE 42 14 655 A1 shows, for example, a split flywheel in which the two flywheel masses are rotatably mounted on one another by means of a thermally insulated roller bearing.
• an intermediate layer of plastic is introduced between the outer ring and the second flywheel, which has to be machined consuming to adapt to the contours of the rolling bearing.
• Object of the invention is the advantageous development of generic rolling bearings against the background to achieve an easy-to-use and cost-effective structure, which is thermally and / or electrically insulating.
• the object is achieved by a rolling bearing with an outer ring and an inner ring and distributed between them distributed over the circumference and dissolved on this rolling rolling elements, in which at the outer periphery of the outer ring over at least a portion of its axial width and at least over part of the outer circumference a non-cutting made of a plastic film foil section is attached.
• Plastic films are manufactured in the desired dimension, for example, with a material thickness of less than 1 mm, preferably less than 0.75 mm on an industrial scale and can be obtained inexpensively in the form of prefabricated goods. It can be applied to the outside diameter of flat film material unilaterally open rings. Alternatively, the circumferential ends of such rings can be closed before or after application, for example, by means of a form-fitting clinch connection. Furthermore, the plastic film can be used as a tubular fabric with a predetermined diameter and mounted on the outer diameter. Particularly advantageous is the use of film strips has been found, which are cut to the predetermined length of the outer diameter of the outer ring and adapted to the axial width or the desired axial coverage of the outer ring.
• polyether ketones and preferably polyetheretherketone (PEEK), which has sufficient thermal strength in the range of 300.degree. C., have proven to be suitable as plastic materials.
• the plastic films for the film sections can be mineral-reinforced, whereby partially crystalline or a-morph plastic films are suitable. Further advantages of using PEEK are the low moisture absorption, the high resistance to chemicals, the wear resistance especially at the glass transition temperature. Furthermore, the electrical insulation is sufficient even for low material thicknesses for the intended applications.
• the joining of the foil sections on the outer ring can take place adhesively in a cost-effective manner by means of conventional gluing methods or alternatively by material bonding, for example for highly stressed applications by means of hot lamination.
• heating element, ultrasonic or laser welding methods can be used.
• the surface of the outer ring can be suitably prepared, for example, activated chemically and / or by means of a plasma and / or preheated.
• the surface of the film section can be pretreated, such as cleaned, mechanically and / or chemically activated, in particular when the film section is adhesively bonded to the outer ring.
• plastic films for producing the film sections have proven to be advantageous, which are already prefabricated with an adhesive layer.
• the film section is not necessarily arranged over the entire width of the outer ring. Rather, in particular for thermal insulation already a preferably central axial region of the outer periphery of the outer ring may be covered by the film portion, wherein the or the axially uncovered areas may have an air gap or, depending on the operating medium, a liquid gap such as oil gap. It has proven to be particularly advantageous if the film cut in a introduced into the outer ring, is inserted at least over a partial circumference of the outer ring extending incision.
• the recess may be a flat annular groove or the like, so that the film portion can be fixed axially in a simple manner. In this case, the insertion depth can be greater than or equal to the thickness of the film section, so that the outer ring is centered on the component to be supported, or smaller than the thickness of the film section, so that a better thermal and an electrical insulation is achieved.
• the film section can be extended radially inwards via at least one shoulder of the outer ring.
• the plastic material for the film section may already be prefabricated as an angle profile, for example by means of an extrusion process, which may have corresponding notches for facilitating the formation of a ring shape on the radially inwardly directed leg of the film section.
• a slit of the ring-shaped film section may be adapted to the thermal elongation of the film section. In this way, pre-bent film sections can be attached to achieve an encapsulation of the rolling bearing on both end sides of the outer ring.
• the radially inwardly pointing leg of a film section which is angled in cross-section can be represented as being closed over the circumference by deforming a flat or angled film section thermally or mechanically, for example by means of a deep-drawing process. It can spanlos almost arbitrarily, for example in the form of caps shaped film sections are shown, the radially inwardly directed annular flange axially flush the inner ring radially overlaps and may optionally rest against this at least slightly biased axially.
• the film portion radially surround the inner ring and inserted into an annular groove on the inner circumference of the inner ring be so that a fully enclosed rolling bearing is formed.
• sealing material such as a sealing ring or fleece can be inserted between the film section and the puncture.
• sealing material such as a sealing ring or fleece
• an axially opposite the races expanded and arranged radially in the running diameter of the rolling elements annular lubricant reservoir from the film section may be formed, for example by means of a deep drawing process.
• FIG. 2 shows a section through a rolling bearing slightly modified relative to the rolling bearing of FIG. 1 with a foil section inserted into a recess
• FIG. 3 shows a partial section through a rolling bearing, which is slightly modified relative to the rolling bearing of FIG. 1, with a film section formed radially inward around an end face of the outer ring;
• Figure 4 is a view of the rolling bearing of Figure 3;
• Figure 5 is a partial section through a relative to the rolling bearing of the figure
• Figure 1 shows a section through the about the rotation axis 2 rotationally symmetrical rolling bearing 1 with the outer ring 3 and the inner ring 4 and positioned in the bearing cage 5, formed in this embodiment as balls rolling elements 6.
• the illustrated embodiment shows a deep groove ball bearing.
• the inventive idea includes in the same way other bearings, for example, equipped with needles or ball bearings bearings.
• the film section 8 is prefabricated from a plastic film as a strip and glued or sintered, for example, with the outer periphery. Due to the low thermal conductivity and the high electrical resistance of the film section 8, the outer ring and thus the roller bearing 1 and the bearing mounted on the inner circumference of the bearing component with respect to the part to be stored on the outer circumference 7 component.
• the outer ring 3 has at both end faces 9, 10 via phases 1 1, which serve the better introduction into the component to be supported a projection of the film section 8.
• Figure 2 shows a section through the rolling bearing 1 a, which has a modified outer ring 3a in contrast to the rolling bearing 1 of Figure 1.
• FIG. 3 shows a partial section of the rolling bearing 1 b rotationally symmetrical about the axis of rotation 2.
• the film section 8b is formed in cross-section at an angle to the legs 14, 15, wherein the formed in the form of a Ringab- section leg 14 arranged on the outer circumference 7 of the outer ring 3b, for example below Preload is applied, glued or sintered and the leg 15 is aligned at the end face 10 of the outer ring 3b radially inward.
• the film section 8b is preferably cut from an already pre-fabricated strip material and pre-bent on the outer circumference 7 of the outer ring 3b. For this purpose, 15 notches 16 are provided from the leg.
• FIG. 4 shows the roller bearing 1b in view with the angled film section 8b with the legs 14, 15 applied to the outer ring 3b (FIG. 3).
• the film section formed from a straight strip material produced as semifinished product of a plastic film and pre-bent on the outer circumference 7 8 b are provided in the annular leg 15 notches 16.
• the length of the strip for producing the film section 8b is dimensioned such that a slot 17 is formed between the ends of the film section 8b which takes into account the different expansion coefficients of the plastic material of the film section 8b and the outer ring 3b (FIG. 3).
• Figure 5 shows a partial section through the roller bearing 1 c, which also has an angle in cross-section film section 8c, wherein the leg 14c applied to the outer ring 3c and the leg 15c is extended radially inwardly so far that it is in an end-side, annular recess 18 of the inner ring 4 c can be inserted without additional axial space requirement or against this at least slightly axially clamped.
• the film section 8c is preferably produced by means of a thermoformed plastic film, so that the film section 8c can be produced as a closed ring and the leg 15c as a continuous ring board 20. The resulting during thermoforming pot bottom is thereby cut off and the pot wall forms the annular leg 15c of the film section.
• the encircling leg 14c may be provided as a pot wall and the leg 15c may be formed by punching the center out of the pot bottom.
• a circumferential retaining collar 28 can be formed or remain standing during the deep drawing process. After the film section 8c has been pulled on, the retaining collar is cut off. In the same way distributed over the circumference radially expanded tabs on the film section 8c for mounting on the outer ring 3c are suitable.
• Figure 6 shows the rolling bearing 1 d in partial section, which represents a variant of the rolling bearing 1 c of Figure 5.
• the preferably thermoformed film section 8d is radially inwardly widened radially surrounding the inner ring 4d.
• the axial projection 19 of the radially inwardly expanded annular rim 20d extends in the annular recess 21 on the inner circumference 22 of the inner ring 4d.
• a closed lubricant space 25 is formed in connection with the annular seal 24, which is defined by the axial extension 26 of the annular recess 21 Film section 8d to the lubricant reservoir 27 is extended so that the service life of the rolling bearing 1 d is extended by the increased lubricant volume.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rolling Contact Bearings (AREA)
• Mounting Of Bearings Or Others (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=43500402

Family Applications (1)

Country Status (8)

Families Citing this family (23)

Citations (3)

Family Cites Families (16)

• 2009
  • 2009-11-30 DE DE102009056349A patent/DE102009056349A1/de not_active Withdrawn
• 2010
  • 2010-10-27 WO PCT/EP2010/066215 patent/WO2011064061A1/de not_active Ceased
  • 2010-10-27 JP JP2012541374A patent/JP5762433B2/ja not_active Expired - Fee Related
  • 2010-10-27 US US13/512,736 patent/US8764301B2/en not_active Expired - Fee Related
  • 2010-10-27 KR KR1020127013786A patent/KR20120104983A/ko not_active Withdrawn
  • 2010-10-27 CN CN201080054206.2A patent/CN102639887B/zh not_active Expired - Fee Related
  • 2010-10-27 EP EP10773047A patent/EP2507524A1/de not_active Withdrawn
  • 2010-10-27 IN IN2383DEN2012 patent/IN2012DN02383A/en unknown

Patent Citations (3)

Non-Patent Citations (1)

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