WO2011131432A1 - Production d'une cage de roulement à rouleaux obliques - Google Patents

Production d'une cage de roulement à rouleaux obliques Download PDF

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Publication number
WO2011131432A1
WO2011131432A1 PCT/EP2011/054212 EP2011054212W WO2011131432A1 WO 2011131432 A1 WO2011131432 A1 WO 2011131432A1 EP 2011054212 W EP2011054212 W EP 2011054212W WO 2011131432 A1 WO2011131432 A1 WO 2011131432A1
Authority
WO
WIPO (PCT)
Prior art keywords
longitudinal web
metal strip
longitudinal
forming
sheet metal
Prior art date
Application number
PCT/EP2011/054212
Other languages
German (de)
English (en)
Inventor
Sven Lautner
Stefan Reissberger
Otmar Weber
Johann Kremer
Rudolf BRÜCKNER
Michael Bernutz
Original Assignee
Schaeffler Technologies Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Publication of WO2011131432A1 publication Critical patent/WO2011131432A1/fr

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
    • F16C33/46—Cages for rollers or needles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/10—Making other particular articles parts of bearings; sleeves; valve seats or the like
    • B21D53/12—Making other particular articles parts of bearings; sleeves; valve seats or the like cages for 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/34—Rollers; Needles
    • F16C33/36—Rollers; Needles with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
    • 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
    • F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
    • F16C33/543—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
    • F16C33/545—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part rolled from a band
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers

Definitions

  • the invention relates to a method for producing a cage of a tapered roller bearing.
  • a cage made in accordance with the invention may be stored in a tapered roller bearing, e.g. a tapered roller bearing can be used.
  • the cage holds the rolling elements, e.g. Tapered rollers, which in turn roll between an outer and an inner raceway.
  • Such tapered roller bearings are known in different embodiments, in particular of the tapered rollers receiving and leading cages.
  • cages In order to ensure a good guidance of the tapered rollers, in particular to achieve optimum contact between tapered roller and cage, usually cages are used, whose outer shape is conical. The outer shape of such cages is thus adapted to the orientation of the axis of rotation of the tapered rollers.
  • the invention has for its object to provide a method for producing a cage of a tapered roller bearing, which allows a simple and inexpensive production.
  • the method according to the invention comprises the step of
  • a sheet metal strip having substantially rectangular dimensions, comprising a first longitudinal web and a second longitudinal web and the first and second longitudinal web connecting transverse webs, wherein the first longitudinal web is straight and a length of the second longitudinal web is greater than a length of the first longitudinal web
  • a sheet metal strip can either be designed to be used for producing a single cage.
  • the number of openings formed by the longitudinal webs and transverse webs, ie the later cage pockets for the rolling elements corresponds to the number of rolling elements used later in the cage.
  • a plurality of cages can be produced from a metal strip according to the invention, that is, that the number of openings is greater than the number of rolling elements used later in the cage.
  • the first longitudinal ridge runs straight, that is, its length corresponds to the shortest connection between its starting point and its end point.
  • the first longitudinal web of the sheet metal strip has no curvatures or arcuate areas. It is therefore also like all the flat metal strips forming webs exclusively in the plane of the metal strip.
  • the second longitudinal web should have a length which is greater than the length of the first longitudinal web. Consequently, and because of the rectangular dimensions of the sheet metal strip, the second longitudinal web is not straight, but may include bends, arcs, etc., but also the second longitudinal web lies completely in the plane of the metal strip.
  • the invention is based on the recognition that, on the one hand, due to the greater length of the second longitudinal web, a sheet-metal strip is created, which can be converted into further processing in a simple and cost-effective manner into a cage with a conical shape.
  • the metal strip produced according to the invention can be made extremely simple and inexpensive, since it is a flat body. The production of the sheet metal strip, for example by pressing, thus requires no compression or stretching of the material in one to the plane vertical direction.
  • the longitudinal webs correspond to the later-known cage side disks, ie those annular elements of the cage which are arranged concentrically around a bearing axis.
  • the transverse webs of the metal strip correspond in the cage later the cage webs, which may be in contact with lateral surfaces of the rolling elements.
  • the second longitudinal web has a wave-shaped course, in particular each has an arc lying between two adjacent transverse webs.
  • These bows lying in the plane of the cage increase the length of the second longitudinal web with respect to the length of the first, straight longitudinal web so that the second longitudinal web can be easily formed into a cage side disk with larger diameter compared to the other cage side disk in the further cage production.
  • the wave-shaped course is identical in each case between two adjacent transverse webs, wherein the distance between all adjacent transverse webs is constant. It is possible that an arc lying between two adjacent transverse webs points in the direction of the first longitudinal web.
  • the method comprises the following further method step:
  • the openings between the longitudinal webs and the transverse struts are changed by this method step from a substantially rectangular to a substantially trapezoidal shape. While the transverse webs in the substantially rectangular sheet metal strip ran perpendicular to the first longitudinal web and thus were arranged parallel to one another, the transverse webs are now at an angle to one another.
  • This process step which is carried out by a non-cutting machining, can directly follow the process step according to the invention for producing the metal strip and provides a crescent-shaped sheet metal strip, as already known from the prior art for the production of cages with a conical shape.
  • both the expense and the cost of providing this crescent-shaped sheet metal strip are substantially lower, as it is e.g. can be made from a strip material.
  • the wave-shaped course of the second longitudinal web of the planar sheet metal strip is formed before forming each by an arc lying between two adjacent transverse webs and the deformation by a sequential straightening each sheet by means of a against the Bow pressing stamp is done.
  • straightening is to be understood here that the wave-shaped course is in each case eliminated in the area between two adjacent transverse webs, so that the longitudinal web has only a single, essentially constant curvature after the straightening.
  • a corresponding stamp can already at this later Curvature of the longitudinal web to be adjusted or even, so that the corresponding region of the crossbar is straight.
  • the method comprises the following further method steps:
  • the method starting from the production of the substantially rectangular sheet-metal strip, comprises the following further method steps:
  • This cylindrical body which, depending on the configuration of the second longitudinal web, would in principle already be suitable as a cage blank for a cylindrical roller bearing can now be brought into a conical shape in a simple and cost-effective manner in different ways. It should be noted that although the first longitudinal web and the second longitudinal web have the same diameter wise, the length of the second longitudinal ridge is still greater than the length of the first longitudinal ridge.
  • the method starting from this cylindrical body, comprises the following further method step:
  • the second longitudinal web is radially expanded, i. the diameter of the second longitudinal web is increased. It is not necessary to stretch the second longitudinal ridge in such a way that its length will increase. Rather, the enlargement of the diameter of the second longitudinal web can be achieved exclusively by straightening the e.g. Wavy course done. Under straightening is again to understand that the undulating course, which has, for example, a plurality of sheets, is eliminated, and the second longitudinal web after straightening has a constant curvature. Of course, in addition, an extension of the second longitudinal web could also take place, so that its length is likewise increased.
  • the forming takes place by means of an axial relative movement between the cylindrical body and a conical section-shaped punch contacting the second longitudinal web.
  • the second longitudinal web is thus expanded radially outward by the punch pushes them radially outward and thereby transforms an example waveform in a course with constant curvature.
  • the undulating course of the second longitudinal web of the planar sheet-metal strip before forming by a respective one between two adjacent transverse webs lying sheet is formed and the reshaping is done by a sequential straightening each sheet by means of a punch pressing against the sheet.
  • the wave-shaped course of the second longitudinal web of the flat sheet metal strip is formed before forming each by a lying between two adjacent transverse webs sheets and reshaping is carried out by a simultaneous straightening all sheets by pressing against the sheets punch ,
  • the production according to the invention of the flat, essentially rectangular sheet-metal strip can take place, for example, by producing the same sheet-metal strip by pressing, milling and / or laser cutting from a sheet metal or a metal strip.
  • the sheet metal strip according to the invention having a rectangular shape substantially in plan view, it can be stamped out of a metal strip in an extremely favorable manner so that the proportion of waste can be reduced to a minimum and continuous processing is possible.
  • the shape according to the invention is advantageous, since compared to a crescent shape less waste is obtained and the production is simplified.
  • the production of the substantially rectangular sheet metal strip may be such that the transverse webs, that is, the later cage webs, already have their final contour for contacting rolling elements.
  • the transverse webs can be embossed during a pressing process or subsequent to a pressing process, before the substantially rectangular metal strip is further formed. But it is also possible to produce the required final contour of the transverse webs at a later date or preform only during manufacture of the metal strip.
  • a cage produced according to the invention can be used for guiding and supporting rolling elements in, for example, tapered roller bearings in industrial applications or in automotive applications.
  • the cage thus produced does not require more space compared to conventional cages.
  • FIG. 1 shows a planar sheet metal strip produced by the method according to the invention
  • FIG. 2 shows a planar sheet-metal strip formed into a crescent-shaped shape by the method according to the invention
  • FIG. 3 shows a cage produced by the method according to the invention
  • FIG. 4 shows a cylindrical body made of a flat sheet metal strip produced according to the invention.
  • FIG. 1 shows a planar sheet metal strip 1 produced by the method according to the invention.
  • the sheet metal strip 1 comprises a first longitudinal web 2, a second longitudinal web 3 and a plurality of transverse webs 4 connecting the two longitudinal webs 2, 3.
  • the sheet-metal strip 1 is essentially rectangular, in particular the extent in a longitudinal direction 5 of both the first longitudinal web 2 and the second longitudinal web 3 is substantially the same length. In addition, its extent in a transverse direction 6 is substantially constant over the entire length (measured in the longitudinal direction 5); In particular, all transverse webs 4 are the same length.
  • Figure 1 b) it can be seen that the sheet metal strip 1 in a vertical direction 7 has a constant thickness and lies in a single plane, that is flat. Despite the same extent in the longitudinal direction 5, the two longitudinal webs 2, 3 different lengths. Thus, the second longitudinal web 3 has a wave-shaped course, and is consequently longer than the first longitudinal web 2, which extends straight.
  • the openings 8 formed by the transverse webs 4 and longitudinal webs 2, 3 form the later cage pockets for rolling elements, not shown. In the substantially rectangular sheet metal strip 1, these openings are substantially rectangular, at least with respect to the first longitudinal web 2 and the transverse webs 4.
  • the transverse webs 4 are all arranged at right angles to the first longitudinal web 2.
  • the transverse webs 4 are also in the longitudinal direction 5 equidistant arranged.
  • the undulating course of the second longitudinal web 3 is formed by a respective arc 9 between two adjacent transverse webs 3.
  • the arc 9 is located centrally in an opening 8 and is mirror-symmetrical with respect to a center 8 in the opening 8 arranged symmetry axis.
  • the complete metal strip 1 in the longitudinal direction 5 is mirror-symmetrical.
  • Each sheet 9 points in the transverse direction 6 in the direction of the first longitudinal web. 2
  • the sheet metal strip 1 has been made by pressing from a strip material. Simultaneously with the pressing process (conceivable also in connection), the transverse webs 3 were embossed, so that they have a suitable for contact with rolling elements contour. In particular, four protrusions 1 1 were thus impressed on a transverse web 3.
  • FIG. 2 shows a planar sheet metal strip 1 formed into a crescent shape according to the method of the invention.
  • the transformation was carried out by straightening the arches of the second longitudinal web 3.
  • the part 14 of the second longitudinal web 3 in the region of each opening 8 was thereby formed into a completely straight course.
  • the track portion 15 of the first longitudinal ridge 2 in the region of each opening 8 has been converted to a completely straight course, so that overall a trapezoidal opening 8 was formed.
  • the straightening can be carried out either sequentially, so that from the initially substantially rectangular sheet metal strip 1 gradually a crescent-shaped sheet metal strip 1 is formed. It is also possible to straighten several or all bends at the same time.
  • FIG. 3 shows several views of a method according to the invention. ren produced cage 12.
  • This cage 12 was made of a crescent-shaped sheet metal strip 1 according to Figure 2 by this sheet metal strip 1 was first rolled into a conical body and was then connected to a joint by welding.
  • the two longitudinal webs 2, 3 have different diameters.
  • the length of the longitudinal webs 2, 3 of the substantially rectangular sheet-metal strip 1 corresponds to the unrolled length of the longitudinal webs 2, 3 of the cage 12.
  • Figure 4 shows a cylindrical body 13, made of a flat sheet metal strip produced according to the invention.
  • Both longitudinal webs 2, 3 still have the same diameter, but different lengths.
  • the cylindrical body 13 can now be reshaped by enlarging the diameter of the second longitudinal web 3 into a conical body, that is to say a conical cage, according to FIG. LIST OF REFERENCE NUMBERS

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

Abstract

L'invention concerne un procédé pour produire une cage de roulement à rouleaux obliques, comprenant l'étape consistant à produire un ruban de tôle (1) situé dans un plan, ayant des dimensions sensiblement rectangulaires, comprenant une première arête longitudinale (2) et une deuxième arête longitudinale (3) ainsi que des arêtes transversales (4) reliant les première et deuxième arêtes longitudinales, la première arête longitudinale (2) s'étendant en ligne droite et une longueur de la deuxième arête longitudinale (3) étant plus grande qu'une longueur de la première arête longitudinale (2).
PCT/EP2011/054212 2010-04-24 2011-03-21 Production d'une cage de roulement à rouleaux obliques WO2011131432A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010018112A DE102010018112A1 (de) 2010-04-24 2010-04-24 Herstellung eines Schrägrollenlagerkäfigs
DE102010018112.9 2010-04-24

Publications (1)

Publication Number Publication Date
WO2011131432A1 true WO2011131432A1 (fr) 2011-10-27

Family

ID=44118876

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/054212 WO2011131432A1 (fr) 2010-04-24 2011-03-21 Production d'une cage de roulement à rouleaux obliques

Country Status (2)

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DE (1) DE102010018112A1 (fr)
WO (1) WO2011131432A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015527549A (ja) * 2012-08-31 2015-09-17 アクティエボラゲット・エスコーエッフ 転がり軸受内で内側レースウェイと外側レースウェイとの間の転がり要素の位置を制御するための転がり軸受ケージ及び転がり軸受ケージを製造するための方法
DE102014212752A1 (de) * 2014-07-02 2016-01-07 Schaeffler Technologies AG & Co. KG Verfahren zum Herstellen eines Wälzlagerkäfigs aus einem Blech

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3526026A (en) * 1967-10-30 1970-09-01 Henry T Warchol Method of making a cage for a tapered roller bearing
DE4206861A1 (de) 1991-03-08 1992-09-10 Skf Ind Spa Kegelrollenkaefig fuer kegelrollenlager
JP2007009989A (ja) * 2005-06-29 2007-01-18 Nsk Ltd 円錐ころ軸受用保持器及びその製造方法
DE102009055753A1 (de) 2009-11-25 2011-05-26 Schaeffler Technologies Gmbh & Co. Kg Kegelrollenlager

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3526026A (en) * 1967-10-30 1970-09-01 Henry T Warchol Method of making a cage for a tapered roller bearing
DE4206861A1 (de) 1991-03-08 1992-09-10 Skf Ind Spa Kegelrollenkaefig fuer kegelrollenlager
JP2007009989A (ja) * 2005-06-29 2007-01-18 Nsk Ltd 円錐ころ軸受用保持器及びその製造方法
DE102009055753A1 (de) 2009-11-25 2011-05-26 Schaeffler Technologies Gmbh & Co. Kg Kegelrollenlager

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Publication number Publication date
DE102010018112A1 (de) 2011-10-27

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