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WO2011064098A1 - Coussinet de palier réalisé sans enlèvement de matière - Google Patents

Coussinet de palier réalisé sans enlèvement de matière Download PDF

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Publication number
WO2011064098A1
WO2011064098A1 PCT/EP2010/067253 EP2010067253W WO2011064098A1 WO 2011064098 A1 WO2011064098 A1 WO 2011064098A1 EP 2010067253 W EP2010067253 W EP 2010067253W WO 2011064098 A1 WO2011064098 A1 WO 2011064098A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearing shell
shaped body
cup
bearing
forming
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
Application number
PCT/EP2010/067253
Other languages
German (de)
English (en)
Inventor
Richard Baier
Sven Hofmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and 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 AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of WO2011064098A1 publication Critical patent/WO2011064098A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • 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
    • 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
    • F16C19/50—Other types of ball or roller bearings
    • F16C19/502—Other types of ball or roller bearings with rolling elements in rows not forming a full circle
    • 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

Definitions

  • the invention relates to a method for producing a bearing shell as well as a pivoting-pivot bearing, in particular for an axial-piston hydraulic unit.
  • a pivoting pivot bearing is used for example in axial piston hydraulic units with variable displacement.
  • a rotating swash plate In axial piston hydraulic units with variable flow rate, a rotating swash plate is used, the inclination angle relative to a rotation axis of the swash plate can be changed. By this change in the inclination angle, the displacement in individual pistons of the axial piston hydraulic units can be changed, so that the stroke volume can be adjusted.
  • the change in this angle of inclination can for example be done by a pivoting pivot bearing, ie the swash plate is pivotally mounted on arcuate rolling bearing segments.
  • a pivotal pivot bearing usually comprises two arcuate, ie circular ring segment-shaped, bearing shells, which have raceways for mostly roller-shaped rolling elements on mutually facing lateral surfaces.
  • DE 10 2005 043 032 A1 discloses a pivotal rolling bearing is known, comprising a metallic, circular segment-shaped bearing shell with a arranged about a bearing axis career on a variety of Rolling a cage guided rolling elements, wherein the track is bounded axially by a respective board.
  • DE 10 2005 043 032 A1 proposes bending the bearing shell from a metal strip and, following this shaping, hardening it in order to provide sufficient surface hardness for the raceway.
  • bearing shells can also be produced by machining.
  • a machining production can for example be made of pipe sections.
  • a disadvantage of a machining production is the high production costs, due to the high loss of material and due to the complex processing.
  • the invention has for its object to provide a method of the type mentioned, which allows a simple and inexpensive production without special requirements must be addressed to the geometry of the bearing shell to be produced and the occurrence of a hardening distortion should be avoided.
  • the invention is further based on the object to provide a pivotal rolling bearing, which can be made easier and cheaper. Summary of the invention
  • a method for manufacturing a bearing shell is characterized by the steps:
  • a pivotal rolling bearing in particular for an axial piston hydraulic unit, comprising at least one bearing shell and a plurality of rolling on a raceway of the bearing shell rolling elements, wherein the bearing shell was produced by the inventive method.
  • the method according to the invention thus consists of two successive steps, namely a first step for forming a pot-like body and a second step for separating a bearing shell from this cup-shaped body.
  • the forming of the first step begins with a sheet-like body, ie a body whose thickness is substantially smaller than its width and length.
  • it may be a metal plate or a metallic (flat) band.
  • the cup-shaped body resulting from the forming essentially corresponds to a hollow-cylindrical body whose one end is closed.
  • the pot-shaped body thus has a circular bottom plate and a hollow cylindrical side wall. If changes in the thickness of the starting material are possible during the forming, the thickness preferably remains substantially constant during the forming.
  • a bearing shell is cut out of the side wall of the cup-shaped body. Comprehensively, the bearing shell extends only over part of the side wall, ie, the bearing shell corresponds to a segment of the hollow cylindrical side wall.
  • the inventive method has the advantage that the basic geometry of the bearing shell can be provided in a simple and cost-effective manner by the transformation of a sheet-like body into a cup-shaped body. Thus, for example, not only the curvature of the bearing shell can be achieved by the forming process, but at the same time an aboard and / or further functional elements of the later bearing shell are also formed at the same time.
  • the inventive method thus proposes a completely different way, as well as the prior art known.
  • the method according to the invention simplifies an optional hardening of the bearing shell after forming, since the bottom of the hollow cylindrical body already acts as a cuff during hardening and thus prevents hardening distortion.
  • a shackle corresponds to an element which fixes the shape of the machine part to be hardened.
  • the forming of the sheet-like material takes place by deep drawing or pressing.
  • the sheet-like material is disc-shaped or annular.
  • the method thus comprises the transformation of a disc-shaped or annular, sheet-like body into a substantially cup-shaped body.
  • the cup-shaped body can in this case be formed such that it consists only of a hollow cylindrical side wall and a bottom, i. in particular, has no flange at an end opposite the bottom.
  • the bearing shell axially substantially comprises a complete side wall of the cup-shaped body. An axial extension of the bearing shell thus corresponds to an axial extent of the side wall of the hollow cylindrical body. This eliminates post-processing steps to increase the width of the bearing shell, i. their axial extent, to reduce to the desired level.
  • the bearing shell circumferentially comprises a maximum of half the circumference of the cup-shaped body.
  • the proportion of the circumference of the cup-shaped body is determined by the application in a pivoting pivot bearing; As a rule, such bearing shells enclose about 180 degrees, ie approximately semicircular ring segments. A semicircular ring segment has a center angle of 180 degrees.
  • the use of bearing shells having a maximum center angle of 180 degrees has the advantage that more than one bearing shell can be separated from a pot-shaped body.
  • the bearing shell preferably comprises less than half of the circumference. fangs the cup-shaped body, further preferably corresponds to the center angle of the bearing shell 160 to 175 degrees. In this case, two cups can be cut out.
  • the bearing shell comprises more than half of the circumference of the pot-shaped body.
  • forming the sheet-like body comprises forming at least one at least partially circumferential rim and / or at least one radial projection.
  • the inventive method allows the shaping of a board as an axial run-up for rolling elements in the same step in which the curvature of the bearing shell is generated around the bearing axis.
  • the resulting asymmetry with respect to a plane perpendicular to the bearing axis does not present any problems in a subsequent hardening process.
  • a hardening distortion is prevented by the base plate connected to the side wall.
  • a radial projection can be introduced as a further functional element of the bearing shell and e.g. serve as an end stop for a cage guiding the rolling bodies.
  • the pot-shaped body is heat-treated prior to the separation of the bearing shell.
  • a heat treatment for example a surface hardening, is useful in order to achieve a sufficient hardness of a raceway on the bearing shell.
  • a hardening distortion is minimized or completely prevented.
  • the structure of the hollow cylindrical body not belonging to the (later) bearing shell for example the base plate or the remaining areas of the side wall, acts as a tether.
  • at least one predetermined breaking point for separating out the bearing shell by means of blasting is introduced by the forming.
  • the separation of the bearing shell can also be done by machining, eg sawing or cutting loops.
  • the bearing shell can be very easily separated from the cup-shaped body by blasting.
  • the first step of forming for this purpose comprises the introduction of a circumferentially extending predetermined breaking point and / or the introduction of at least one axially extending predetermined breaking point.
  • two axially extending predetermined breaking points at the respective desired circumferential ends of the bearing shell and a circumferentially extending predetermined breaking point at the bottom of the cup-shaped body facing the axial end of the bearing shell are introduced.
  • predetermined breaking points can be introduced, for example, directly by a correspondingly shaped deep-drawing tool in the first step of the forming. It is also possible, of course, the subsequent introduction of the predetermined breaking points after the first step of the transformation to a cup-shaped body.
  • the separation of the bearing shell and / or the soil is carried out by blasting. It is also conceivable that the separation of the bearing shell and / or the floor is done by punching. For example, in a first step, the bottom of the pot-shaped body can be separated out and then the bearing shell can be separated out of the resulting hollow-cylindrical body.
  • the ratio of sheet thickness to diameter of the hollow cylindrical body is in the range from 1:10 to 1: 100, preferably in the range from 1:20 to 1:75, more preferably in the range from 1:30 to 1:50. It turned out that such conditions on the one hand permit good production by, for example, deep-drawing or pressing, and on the other hand, that a sufficient stability of the resulting provide bearing cups.
  • the sheet-like body substantially has a constant sheet thickness.
  • FIG. 1 shows a cup-shaped body produced by the first method step
  • FIG. 2 shows a pivoting-wobble bearing comprising a bearing shell produced by the method according to the invention.
  • FIG. 1 shows a cup-shaped body 1 which is made of a sheet-like body by forming, e.g. Deep drawing, was made.
  • the cup-shaped body 1 has a circular base plate 2 and a side wall 3 connected in a materially bonded manner to the base plate.
  • the bottom plate 2 extends perpendicular to a bearing axis 4.
  • the side wall 3 is arranged concentrically to the bearing axis 4.
  • This circumferentially extending predetermined breaking point 5 was positioned so that when separating the bottom 2 and side wall 3, a circumferential flange 7 stops at the side wall 3.
  • This board 7 is used during operation of the later bearing shell as a start for WälzSystemstirn beaurn beau, whereby they are held axially.
  • the board 7 thus represents an axial boundary of a track of the later bearing shell.
  • predetermined breaking points 6 are axially extending in the side wall 3 and were also introduced in the forming step. These predetermined breaking points simplify the separation of the bearing shell and the remaining side wall by blasting.
  • radial projections 12 were also introduced into the side wall 3. These are, for example, pimple-shaped or wedge-shaped elements, ie molds which can be produced by the forming step.
  • FIG. 2 shows a pivoting-wobble bearing 13 comprising a bearing shell 8 produced by the method according to the invention. Shown is the bearing shell 8 and on a track 9 of the bearing shell 8 rolling and guided in a cage 10, roller-shaped rolling elements 1. 1 The located at one axial end of the bearing shell 8 board 7 extends circumferentially almost over the entire bearing shell 8. Only at the two circumferential end of the bearing shell 8 of the board 7 ends a little earlier.

Landscapes

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

Abstract

La présente invention concerne un procédé pour réaliser un coussinet de palier (8) ainsi qu'un palier à balancier, notamment pour une unité hydraulique à pistons axiaux. Un tel palier à balancier est employé par exemple dans des unités hydrauliques à pistons axiaux à refoulement variable. Le procédé selon l'invention consiste à déformer un corps en forme de tôle pour donner un corps sensiblement cupuliforme (8) et à séparer le coussinet de palier (8) du corps cupuliforme (1), le coussinet de palier (8) comprenant en périphérie uniquement une partie d'une paroi latérale (3) du corps cupuliforme (1).
PCT/EP2010/067253 2009-11-27 2010-11-11 Coussinet de palier réalisé sans enlèvement de matière Ceased WO2011064098A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009056142.0 2009-11-27
DE102009056142A DE102009056142A1 (de) 2009-11-27 2009-11-27 Spanlos hergestellte Lagerschale

Publications (1)

Publication Number Publication Date
WO2011064098A1 true WO2011064098A1 (fr) 2011-06-03

Family

ID=43530130

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/067253 Ceased WO2011064098A1 (fr) 2009-11-27 2010-11-11 Coussinet de palier réalisé sans enlèvement de matière

Country Status (2)

Country Link
DE (1) DE102009056142A1 (fr)
WO (1) WO2011064098A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102626741A (zh) * 2012-04-10 2012-08-08 上海交通大学 用于侧壁带齿形壳体的拉深复合成形模具
EP4231509A1 (fr) * 2022-02-18 2023-08-23 Fischer & Kaufmann GmbH & Co. KG Carter de stator

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB240608A (en) * 1924-08-25 1925-10-08 Wolseley Motors Ltd Improvements in, and in the manufacture of, races for roller bearings
US1759906A (en) * 1928-12-19 1930-05-27 Cleveland Graphite Bronze Co Method of making bearings
US1867412A (en) * 1928-12-28 1932-07-12 Cleveland Graphite Bronze Co Method of making bearings
GB1172567A (en) * 1966-04-01 1969-12-03 Schaeffler Wilhelm Hardened Raceway for Sliding or Roller Bearing
DE2439096A1 (de) * 1973-08-15 1975-02-27 Glacier Metal Co Ltd Lagerbuechse sowie verfahren und vorrichtung zu ihrer herstellung
DE19513668A1 (de) * 1995-04-11 1996-10-17 Schaeffler Waelzlager Kg Nadellager und Verfahren zu seiner Herstellung
US5630352A (en) * 1996-03-08 1997-05-20 Vickers, Incorporated Variable displacement hydrualic piston machine saddle bearing
US20020094143A1 (en) * 2001-01-16 2002-07-18 Federal-Mogul World Wide, Inc. Flange bearing
JP2003004051A (ja) * 2001-06-25 2003-01-08 Ntn Corp シェル形針状ころ軸受用軌道輪およびその製造方法
DE102004040341A1 (de) * 2004-08-20 2006-02-23 Ina-Schaeffler Kg Wälzlager umfassend wenigstens ein präzisions-tiefgezogenes Bauteil mit einer Lauf- oder Führungsfläche für Wälzkörper, sowie Verfahren zur Herstellung eines solchen Bauteils
EP1666745A1 (fr) * 2003-09-16 2006-06-07 Ntn Corporation Roulement a aiguilles du type coque, structure de support pour arbre principal de compresseur, et structure de support pour section d'entrainement d'une pompe a piston
DE102005043032A1 (de) 2005-09-10 2007-03-15 Schaeffler Kg Schrägscheiben-Schwenklager

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB240608A (en) * 1924-08-25 1925-10-08 Wolseley Motors Ltd Improvements in, and in the manufacture of, races for roller bearings
US1759906A (en) * 1928-12-19 1930-05-27 Cleveland Graphite Bronze Co Method of making bearings
US1867412A (en) * 1928-12-28 1932-07-12 Cleveland Graphite Bronze Co Method of making bearings
GB1172567A (en) * 1966-04-01 1969-12-03 Schaeffler Wilhelm Hardened Raceway for Sliding or Roller Bearing
DE2439096A1 (de) * 1973-08-15 1975-02-27 Glacier Metal Co Ltd Lagerbuechse sowie verfahren und vorrichtung zu ihrer herstellung
DE19513668A1 (de) * 1995-04-11 1996-10-17 Schaeffler Waelzlager Kg Nadellager und Verfahren zu seiner Herstellung
US5630352A (en) * 1996-03-08 1997-05-20 Vickers, Incorporated Variable displacement hydrualic piston machine saddle bearing
US20020094143A1 (en) * 2001-01-16 2002-07-18 Federal-Mogul World Wide, Inc. Flange bearing
JP2003004051A (ja) * 2001-06-25 2003-01-08 Ntn Corp シェル形針状ころ軸受用軌道輪およびその製造方法
EP1666745A1 (fr) * 2003-09-16 2006-06-07 Ntn Corporation Roulement a aiguilles du type coque, structure de support pour arbre principal de compresseur, et structure de support pour section d'entrainement d'une pompe a piston
DE102004040341A1 (de) * 2004-08-20 2006-02-23 Ina-Schaeffler Kg Wälzlager umfassend wenigstens ein präzisions-tiefgezogenes Bauteil mit einer Lauf- oder Führungsfläche für Wälzkörper, sowie Verfahren zur Herstellung eines solchen Bauteils
DE102005043032A1 (de) 2005-09-10 2007-03-15 Schaeffler Kg Schrägscheiben-Schwenklager

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102626741A (zh) * 2012-04-10 2012-08-08 上海交通大学 用于侧壁带齿形壳体的拉深复合成形模具
EP4231509A1 (fr) * 2022-02-18 2023-08-23 Fischer & Kaufmann GmbH & Co. KG Carter de stator

Also Published As

Publication number Publication date
DE102009056142A1 (de) 2011-06-01

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