US3221390A - Method and apparatus for forming cages for roller bearings - Google Patents

Method and apparatus for forming cages for roller bearings Download PDF

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Publication number
US3221390A
US3221390A US427031A US42703165A US3221390A US 3221390 A US3221390 A US 3221390A US 427031 A US427031 A US 427031A US 42703165 A US42703165 A US 42703165A US 3221390 A US3221390 A US 3221390A
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US
United States
Prior art keywords
punch
projections
strip
die
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.)
Expired - Lifetime
Application number
US427031A
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English (en)
Inventor
Pitner Alfred
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.)
Timken France SAS
Original Assignee
Nadella SA
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 Nadella SA filed Critical Nadella SA
Application granted granted Critical
Publication of US3221390A publication Critical patent/US3221390A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • 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
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • 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
    • Y10T29/496—Multiperforated metal article making
    • 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
    • Y10T29/49691—Cage making

Definitions

  • the present invention relates to cages or cage segments for roller or needle bearings, a method and an apparatus for forming said cages being produced by blanking and bending flat strip.
  • the object of the present invention is to provide a method for forming retaining projections which is devoid of the aforementioned drawbacks owing to the fact that a die is employed in which cavities are formed in the shape of grooves which communicate with the corresponding punch-receiving openings in the die in the direction perpendicular to the edge of said openings.
  • the width and depth of said grooves are so chosen, as a function of the thickness and nature of the metal to be pierced, that as the punch passes through the plane on which the strip is supported during the piercing operation and enters the punch-receiving opening in the die, it upsets into the bottom of the grooves a portion of the strip which is thereafter cut or pierced during the downward stroke of the punch as the latter passes through the level of the bottom of the groove.
  • FIG. 1 is a vertical sectional view of a punch and die assembly for piercing apertures in a fiat strip
  • FIG. 2 is a plan view of the die shown in FIG. 1;
  • FIG. 3 is a sectional view taken along line 33 of FIG. 2;
  • FIG. 4 is a longitudinal sectional view of the cage blank obtained by means of the assembly shown in FIG. 1;
  • FIG. 5 is a diagrammatic sectional view of the final stage of the formation of the retaining projections.
  • FIG. 6 is a longitudinal sectional view of the finished cage.
  • FIG. 1 shows an aperture-piercing press tool assembly comprising a die A and punches B for piercing a flat strip C adapted to form a blank for a cylindrical cage or cage segment.
  • the die comprises rectangular-shaped punchreceiving openings 2. Grooves 3 which are perpendicular to the large sides 2a of these openings communicate with the latter. According to the invention, these grooves serve to form on one of the faces of the pierced strip and along the large sides 1a, projections 4 which are perpendicular to the plane of the strip.
  • the projections 4 of the blank shown in FIG. 4 are upset or urged back into the plane of the corresponding face, for example in accordance with FIG.
  • FIG. 5 shows the action of a forming punch D which co-operates with an anvil E for converting a radial projection into a tangential projection.
  • Retaining projections 6 can also be provided on the other face of the blank (FIG. 6), for example by forming, by means of tools in the form of centre punches, depressions 7 so that the material is upset or urged inwardly of the apertures, the projections thus formed being, if desired, axially offset relative to the projections 5.
  • Projections 4 could also be provided along the small sides I! of the apertures for the purpose of exerting a retaining action on the ends of the needles or rollers. In this case, grooves 3' perpendicular to the small sides 2]) of the punch-receiving openings 2 in the die would be provided in the latter.
  • FIG. 2 shows two groups of grooves 3 which are in the prolongation of each other in each groupthat the sharpening can be obtained by merely passing over the die top a narrow shaping grinding wheel which is fed radially into the die metal. This is an inexpensive operation.
  • a method for forming rolling element retaining projections in the sides of apertures in a flat strip adapted to form a cage structure for bearings having rolling elements comprising piercing each rolling element receiving aperture in the strip by means of a punch and a die having a punch-receiving opening, upsetting portions of the material of the strip by the action of the punch as it pierces the aperture, the punch upsetting said portions into grooves provided in the top face of the die and cornmunicating with the wall defining said opening so as to form depending projections in the strip, and thereafter urging the depending projections laterally inwardly of the aperture by means of a forming punch and an anvil, the depending projections being placed against the anvil and the forming punch having rounded edges in the region of said projections.
  • each aperture is elongated and extends transversely of the strip, said grooves communicating with the large sides of the die opening forming the aperture.
  • each aperture is elongated and extends transversely of the strip, said grooves communicating with the small sides of the die opening forming the aperture.
  • a method for forming rolling element retaining projections in the sides of apertures in a flat strip adapted to form a cage structure for bearings having rolling elements comprising piercing each rolling element receiving aperture in the strip by means of a punch and a die having a punch-receiving opening, upsetting portions of the material of the strip by the action of the punch as it pierces the aperture, the punch upsetting said portions into grooves provided in the top face of the die and communicating with the wall defining said opening so as to form depending projections in the strip, and thereafter urging the depending projections laterally inwardly of the aperture by means of a forming punch and an anvil, the depending projections being placed against the anvil and the forming punch having rounded edges in the region of said projections, said method further comprising forming second rolling element retaining projections on the face of the strip opposed to the face on which the firstrnentioned projections are formed, said second projections being formed by striking the strip in close vicinity to the sides of each aperture by center-punches so
  • a press tool assembly for forming rolling element projections in the sides of apertures in a flat strip adapted to form a cage structure for bearings having rolling elements, said assembly comprising punches and a die having punch-receiving openings, and grooves in the top face of the die which communicate with the walls defining said openings, whereby a portion of the material of the strip are upset into said grooves and form depending projections as the punches pierce said apertures.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sliding-Contact Bearings (AREA)
  • Punching Or Piercing (AREA)
US427031A 1964-02-19 1965-01-21 Method and apparatus for forming cages for roller bearings Expired - Lifetime US3221390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR964324A FR1394203A (fr) 1964-02-19 1964-02-19 Perfectionnement aux cages de roulement à aiguilles ou à rouleaux

Publications (1)

Publication Number Publication Date
US3221390A true US3221390A (en) 1965-12-07

Family

ID=8823519

Family Applications (1)

Application Number Title Priority Date Filing Date
US427031A Expired - Lifetime US3221390A (en) 1964-02-19 1965-01-21 Method and apparatus for forming cages for roller bearings

Country Status (8)

Country Link
US (1) US3221390A (da)
AT (1) AT262032B (da)
BE (1) BE658196A (da)
CH (1) CH436865A (da)
DE (1) DE1452825C3 (da)
ES (1) ES309222A1 (da)
FR (1) FR1394203A (da)
GB (1) GB1079432A (da)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482297A (en) * 1966-04-08 1969-12-09 Textron Inc Method of making a bearing retainer
US20110023304A1 (en) * 2004-11-16 2011-02-03 Jtket Corporation Roller thrust bearing cage and manufacturing method thereof
US20150147015A1 (en) * 2013-11-25 2015-05-28 Jtekt Corporation Split cage and roller bearing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA980555A (en) * 1972-05-01 1975-12-30 Torrington Company (The) Bearing cage and method for producing a bearing cage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998635A (en) * 1959-01-22 1961-09-05 Oscar C Rixson Co Method of making roller bearings
US3138849A (en) * 1962-02-20 1964-06-30 Federal Mogul Bower Bearings Method of making a bearing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2998635A (en) * 1959-01-22 1961-09-05 Oscar C Rixson Co Method of making roller bearings
US3138849A (en) * 1962-02-20 1964-06-30 Federal Mogul Bower Bearings Method of making a bearing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482297A (en) * 1966-04-08 1969-12-09 Textron Inc Method of making a bearing retainer
US20110023304A1 (en) * 2004-11-16 2011-02-03 Jtket Corporation Roller thrust bearing cage and manufacturing method thereof
US8627570B2 (en) * 2004-11-16 2014-01-14 Jtekt Corporation Roller thrust bearing cage and manufacturing method thereof
US20150147015A1 (en) * 2013-11-25 2015-05-28 Jtekt Corporation Split cage and roller bearing
US9194430B2 (en) * 2013-11-25 2015-11-24 Jtekt Corporation Split cage and roller bearing

Also Published As

Publication number Publication date
BE658196A (da) 1965-04-30
GB1079432A (en) 1967-08-16
DE1452825A1 (de) 1969-11-06
AT262032B (de) 1968-05-27
DE1452825C3 (de) 1974-12-05
CH436865A (fr) 1967-05-31
ES309222A1 (es) 1965-06-01
FR1394203A (fr) 1965-04-02

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