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
  • F16C33/42—Ball cages made from wire or sheet metal strips
  • F16C33/422—Ball cages made from wire or sheet metal strips made from sheet metal
  • F16C33/425—Ball cages made from wire or sheet metal strips made from sheet metal from a single part, e.g. ribbon cages with one corrugated annular part
• • 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
  • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
  • F16C19/16—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
  • F16C19/163—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls with angular contact
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49636—Process for making bearing or component thereof
  • Y10T29/49643—Rotary bearing
  • Y10T29/49679—Anti-friction bearing or component thereof
  • Y10T29/49686—Assembling of cage and rolling anti-friction members

Definitions

• the invention relates to a WälzMechhimfig for a ball bearing in the form of a ring with distributed over the circumference receptacles for holding and guiding the rolling elements.
• the invention is therefore based on the object to simplify a WälzMechhimfig of the aforementioned type with regard to its structure, its manufacture and the assembly of the rolling elements and to make cost-effective. Description of the invention
• a WälzSystem sympathomimetic for a ball bearing in which the receptacles for holding and guiding the rolling elements are designed as recesses or recesses, each forming at least one adapted to the spherical surface of the rolling elements spherical curved retaining edge on which the rolling elements in the recess or Recess are resiliently snapped.
• the rolling elements of the retaining edge along a closed line that exceeds the Kugeläquator several times,sschmternd umschmiegbar of the retaining edge, wherein the rolling elements in the recess can come into contact with the raceway of the bearing ring without the WälzConsequently tanninfig touched.
• the WälzShArchitectmaschinefig is carried out in sheet metal and cost-effectively produced by sheet metal processing process without cutting.
• the recesses for receiving the rolling elements can be simply punched out of the sheet metal.
• the design in sheet steel ensures high temperature resistance.
• a further preferred embodiment of the invention provides to form the ring in the axial direction with a substantially omega-shaped profile.
• this has a substantially omega-shaped curvature between the rims.
• the omega-shaped arched between the Borden ring mold encloses the ball surface of the rolling elements along the closed edges of the retaining edges of the recesses.
• the omega-shaped, radially curved ring shape enables maular- tig open side a particularly simple installation of the rolling elements.
• the omega-shaped profile can also be easily adapted to the space requirements of the bearing and to the dimensions of the rolling elements. In a design in sheet metal, the profiling of the ring is particularly easy to produce by rolling.
• the retaining edge preferably has the spherically curved, substantially circumferentially extending circumferential arc sections facing the ribs. These are connected to one another in a closed line by spherically curved longitudinal arc sections extending substantially in the axial longitudinal direction. In this way, the retaining edge is adapted to the ball surface of the rolling elements, wherein the rolling elements are guided and held at the spherically curved peripheral arc sections and longitudinal arc sections, respectively. As a result, a so-called four-point mounting and guiding the rolling elements is achieved at the retaining edge.
• high-strength material in particular sheet steel
• WälzSystems with a smaller material cross-section, in particular a reduction of the cross-sectional profile of the webs to a square or approximately square cross-section in the circumferential direction is possible.
• a larger number of rolling elements can be arranged in the WälzSystemurafig, whereby the load rating is increased and the life of the bearing is extended.
• the low material cross-section also offers the possibility of using more lubricant in grease-lubricated bearings and increasing the grease chamber rate, which can further increase the service life of the bearing.
• a special wear protection of WälzMechshifigs can be achieved by a surface treatment, in particular by a surface hardening of the steel sheet, such as nitrocarbonating.
• a wear-resistant coating of the ring in particular as a steel coating such as Korotex, possible.
• the ring has a radially inwardly curved omega-shaped profile, the open omega side pointing radially outward.
• the rolling elements can be pushed on the radially outer side of the ring from radially outward to radially inward into the recesses on the roller body cage.
• the ring is made in one piece.
• the structure of the rolling element cage is further simplified and the assembly costs and the manufacturing costs are further reduced.
• the ribs of the ring are adapted to adapt the Wälz stresses greatfigs to an angular contact ball bearings with different diameters.
• the ring, in particular on the ribs can easily be adapted to the elevations on the bearing rings required for the design of the oblique grooves in angular contact ball bearings and the different diameters resulting therefrom.
• a method for producing distributed over the circumference receptacles for supporting and guiding the rolling elements on a Wälz stresses greatfig for a ball bearing in the form of a ring in which in a sheet steel plate or in a sheet steel strip one of the later rolling elements of the ball bearing corresponding number of elliptical recesses are punched out.
• the sheet steel plate or the sheet steel strip are brought by a forming process in a substantially omega-shaped longitudinally profiled ring shape, so that at the recesses each at least one adapted to the spherical surface of the rolling elements, spherically curved peripheral retaining edge is formed.
• the recesses can be punched in a ring corresponding to the later ring of the WälzSystemkarfigs area lying behind each other lying.
• a continuous punching in the longitudinal direction is possible.
• the profiling of the sheet steel plate and the sheet steel strip preferably takes place in one or more bending steps, in particular by profile rolling.
• the sheet steel disk can be profiled annularly with the desired profile in an annular region corresponding to the later ring, which is punched out before or after profiling.
• the profiling of the sheet steel strip can be carried along its width, wherein the cut sheet steel strip is brought by a round bending in the desired longitudinally profiled ring shape and welded at its ends or connectable by a form-fitting or form / frictional connection.
• annular profiling of the sheet steel plate or by the profiling and the round bending of the sheet steel strip is formed on the originally elliptical recesses each one adapted to the spherical surface of the rolling elements spherical curved retaining edge.
• the punching of the recesses in the sheet steel plate or in the steel strip even after the profiling of the same or the profiling of the sheet steel plate or the sheet steel strip can be carried out before said punching.
• the aforementioned method steps can be carried out with a so-called follow-up tool in succession in a machine.
• a follow-up tool in succession in a machine.
• the production of Wälz stresses hifigs can be made of a thin-walled endless steel strip.
• the production can be further simplified if a omega-shaped profile of the later ring according to its width pre-profiled steel strip is used. It is also conceivable that an at least partially corresponding to the omega-shaped profile of the later ring pre-bent sheet steel plate is used for the production. In this way, a one-piece Kugelschnappharifig chipless thin-walled steel sheet is inexpensive to produce.
• a method for mounting rolling elements in a rolling element cage for a ball bearing in the form of a ring with distributed over the circumference receptacles for supporting and guiding the rolling elements is proposed, wherein the rolling elements on the radially open side of the substantially omega-shaped longitudinally profiled ring shape by an elastic opening of the rims of the same in the recess designed as receptacles are snapped self-latching.
• the radially curved ring shape allows on its mouth-like open side between the Borden a particularly simple assembly of the rolling elements.
• Figure 1 is a perspective view of an inventive
• FIG. 2 is a side view of the rolling element cage
• FIG. 4 shows an enlarged detail of the roller body cage from FIG.
• FIG. 5 is a perspective view of the rolling element cage with fitted rolling elements
• Figure 6 is a side view of the rolling element cage with stocked rolling elements
• Figure 7 shows a section of the WälzMechhimfig with stocked
• FIG. 8 shows an enlarged section of the rolling element cage with assembled rolling bodies from FIG. 3,
• FIG. 9 shows a section along the line X-X from FIG. 8,
• FIG. 10 shows a longitudinal section of the rolling element cage arranged in an angular contact ball bearing
• FIG. 11 shows an enlarged detail from FIG. 10.
• FIG. 1 is a perspective view of a rolling element cage according to the invention designed as a ball and socket cage for an angular contact ball bearing.
• the Kugelschnappkarfig is integrally formed in a thin-walled steel sheet in the form of a ring and has a substantially omega-shaped longitudinal profile, which is directed with its open omega side radially outward. This creates a between its rims 2, 3 radially inwardly curved ring.
• the distributed over the circumference of the ring arranged recesses for receiving the rolling elements have in plan view an elliptical shape and form at their edges each holding edges 1, where the rolling elements received in the recesses are held.
• the retaining edges 1 each extend along a closed line. This line runs between the rims 2, 3 of the ring along a on the one hand by its omega-shaped longitudinal profile and on the other hand mediated by its annular curvature spherical curvature.
• the annular shape between the shelves 2, 3 is curved significantly radially inward (Figure 2).
• the recesses are separated from each other by the ribs 4 connecting the ribs 2, 3 of the ring and form on their borders 2, 3 facing each circumferentially extending in the circumferential direction of the ring adapted to the spherical surface, spherically curved peripheral arc sections 5 of the retaining edge. 1
• the ribs 2, 3 of the ring are designed with different diameters.
• FIG. 3 is a perspective view of a detail of the rolling element cage from the inside.
• the originally flat elliptical basic shape of the recesses which form by the radially inwardly curved omega-shaped profiling and the round bending in the ring shape each one along a spherical curved line extending retaining edge 1.
• This has in each case the ribs 2, 3 facing, spherically curved peripheral arc sections 5, 6, which are connected by the along the webs 4 in the axial direction extending adapted to the spherical surface, spherically curved longitudinal arc sections 7, 8 to a closed line.
• FIG. 4 shows the substantially omega-shaped longitudinal profile of the ring.
• This forms in the region of the shelves 2, 3 approximately in the axial direction extending edge portions 9, 10, as omega feet, wherein formed with the larger diameter board 2 has a radially outwardly extending end portion 1 1.
• the lying between the omega feet radially outwardly opened omega-belly is formed by two each extending from the omega feet converging obliquely radially inwardly extending approximately equal length flanks 12, 13 formed by an axial to the smaller diameter having board 3 towards slightly obliquely inclined longitudinal portion 14 are interconnected.
• the omega-belly unlike the ordinary shape of the omega, is slightly stretched in the axial direction and inclined slightly obliquely towards the smaller-diameter rim 3.
• Figures 5, 6 and 7 of the pre-assembled with rolling elements Kugelschnappkarfig is shown in perspective.
• the rolling elements are each surrounded by the spherically curved holding edges 1 umschmiegt.
• the rolling elements can be pressed from radially outward to radially inward into the recesses by elastic opening of the shelves 2, 3 and by elastic snap-fastening of the holding edges 1.
• the retaining edge 1 snaps back elastically, whereby the ball is heldshalternd in the recess.
• the radially inward arched retaining edge 1 nestles spherically curved on the spherical surface of the rolling elements and covers or exceeds at its peripheral arc sections 5, 6 and the longitudinal arc sections 7, 8 the ball equator 15 clearly.
• a so-called four-point support and guidance of the rolling elements is achieved on the retaining edge 1 of the recess.
• the overlapping or exceeding of the ball equator 15 at the peripheral arc sections 5, 6 of the retaining edge 1 in the region of the ribs 2, 3 of the ring is again clarified.
• the Wälz stresseshanfig is shown cut on the webs 4 each in the circumferential direction along the line XX.
• the longitudinal profile of the ring and the following this holding edges 1 of the recesses on the flank 13 to the smaller diameter having the board 3 in the radially outward direction increases.
• the rolling elements are held and guided in the recesses on the longitudinal arc section 7 of the retaining edge 1 in the circumferential direction.
• the retaining edge 1 at its peripheral arc section 6 exceeds the ball equator 15.
• the material cross section in the circumferential direction of the webs 4 can optionally be reduced to a square cross section, to increase the number of rolling elements with the same space requirements.
• FIG. 10 shows a longitudinal section of the ball snap cage which is premounted with rolling elements arranged in an angular contact ball bearing.
• the balls run along the inclined grooves formed on elevations on the bearing rings.
• the rolling elements received in the recesses of the ring have play in all directions. As a result, they can adjust themselves in the oblique grooves.
• the ball snap cage is designed in an adapted to the shape of the elevations on the bearing rings ring shape and is supported by rolling bodies completely on the rolling elements from.
• the rolling elements enclosed in the recesses of the ring by the holding edges 1 are radially outward and radially inward in contact with the oblique grooves of the bearing rings of the angular contact ball bearing, without these contacting the rolling element cage.
• the diameter of the shelf 2 is adapted to the larger diameter of the non-exaggerated side 16 of the outer bearing ring and arranged with its radial end portion 1 1 of this page 16 with radial clearance, while the diameter of the board 3 to the smaller diameter of the superelevation adapted page 17 adapted to the outer bearing ring and arranged at approximately axially extending edge portion 10 of this page 17 with radial clearance ( Figure 1 1).
• the circumferential arc sections 5, 6 of the retaining edge 1 in the region of the ribs 2, 3 are guided radially outwards at the recesses, so that they overlap or exceed the ball equator 15 and surround the rolling element in the recess in a self-supporting manner.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rolling Contact Bearings (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=43065728

Family Applications (1)

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Family Cites Families (25)

• 2009
  • 2009-10-09 DE DE102009048875A patent/DE102009048875A1/de not_active Withdrawn
• 2010
  • 2010-09-06 US US13/500,949 patent/US20120207419A1/en not_active Abandoned
  • 2010-09-06 IN IN2841DEN2012 patent/IN2012DN02841A/en unknown
  • 2010-09-06 CN CN2010800454485A patent/CN102575710A/zh active Pending
  • 2010-09-06 WO PCT/EP2010/063004 patent/WO2011042270A1/de active Application Filing
  • 2010-09-06 EP EP10752774A patent/EP2486294A1/de not_active Withdrawn
  • 2010-09-06 JP JP2012532521A patent/JP5661780B2/ja not_active Expired - Fee Related

Non-Patent Citations (1)

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