US2722047A - Production of precision bushings - Google Patents

Production of precision bushings Download PDF

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Publication number
US2722047A
US2722047A US224757A US22475751A US2722047A US 2722047 A US2722047 A US 2722047A US 224757 A US224757 A US 224757A US 22475751 A US22475751 A US 22475751A US 2722047 A US2722047 A US 2722047A
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United States
Prior art keywords
bushing
production
ring
bushings
flange
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Expired - Lifetime
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US224757A
Inventor
Walter F Cousino
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Walter F Cousino
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02Parts of sliding-contact bearings
    • F16C33/04Brasses; Bushes; Linings
    • F16C33/06Sliding surface mainly made of metal
    • F16C33/14Special methods of manufacture; Running-in
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/04Making machine elements ball-races or sliding bearing races
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00Shaping
    • F16C2220/60Shaping by removing material, e.g. machining
    • F16C2220/70Shaping by removing material, e.g. machining by grinding
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00Shaping
    • F16C2220/80Shaping by separating parts, e.g. by severing, cracking
    • F16C2220/82Shaping by separating parts, e.g. by severing, cracking by cutting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00Surface treatments; Hardening; Coating
    • F16C2223/02Mechanical treatment, e.g. finishing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2223/00Surface treatments; Hardening; Coating
    • F16C2223/02Mechanical treatment, e.g. finishing
    • F16C2223/04Mechanical treatment, e.g. finishing by sizing, by shaping to final size by small plastic deformation, e.g. by calibrating or coining
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/30Material joints
    • F16C2226/32Material joints by soldering
    • F16C2226/34Material joints by soldering by brazing
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49636Process for making bearing or component thereof
    • Y10T29/49643Rotary bearing
    • Y10T29/49647Plain bearing
    • Y10T29/49668Sleeve or bushing making
    • Y10T29/49671Strip or blank material shaping

Description

Nov. 1, 1955 w. F. cousmo 2,722,047

PRODUCTION OF PRECISION BUSHINGS Filed May 5, 1951 ll-l United States Patent This invention relates'to the production of bushings. An object of this invention is to provide a methodfor the economical mass production of precision bushings. Another object of this invention is the production "from comparatively heavy steel stock, ,of bushings .of

predetermined dimensions within tolerances limited -.0Ol".

Another object of this invention is the production from strip stock, precision dimensioned bushings, with- .out any scrap resulting therefrom.

And another object of this inventionis themass production of automotive bushings which eliminates major cutting; reaming, grinding and other tool-operations-heretofore'employed in the production of similarelcments and thereby-reduce the cost thereof to a relatively small fraction of previous costs.

Other objects and advantages of this invention willbe apparent to those skilled in therartupon consideration of the following description and appended claims, reference being had to the accompanying drawings forming a part of this specification wherein like reference characters designate corresponding parts in the several views.

Referring to the drawings:

Fig. 1 is a perspective view of a strip of stock employed in the production of the bushings herein, illustrating at least one initial operation thereon, together with a blank severed therefrom;

Fig. 2 is an end elevation of a ring formed from the blank of Fig. 1;

Fig. 3 is a side elevation of the ring of Fig. 2, partly broken away;

Fig. 4 is a cross-section through a form of die arrangement for operating on the ring of Fig. 3, which embodies the method herein;

Fig. 5 is a view similar to Fig. 4, illustrating the completed die operation;

Fig. 6 is a side elevation of a completed bushing, partly broken away;

Fig. 7 is an end view of a stock strip subjected to a modified treatment;

Fig. 8 is a side elevation of another form of a finished bushing; and

Fig. 9 is a cross-section through a modified die arrangement which employs the novel method disclosed herein.

Certain automotive manufacturers demand vast quantitles of flanged bushings including predetermined dimensions within tolerance limits of $001. Heretofore such bushings were comparatively expensive due to the number of operations required for their production which included cutting, grinding and the like, and there was material residual scrap. The method herein disclosed eliminates most of the expensive tool operations and residual scrap.

Strip stock 10 has one of its sides coined to provide a feathered edge 12. Predetermined lengths are progressively sheared therefrom to provide blanks 14. Each of these segregated blanks 14 are, by the novel method here- 2 in, formed'into a completed precision dimensioned bushing, without any scrap therefrom.

The blank 14 is developed or formed into a cylinder or ring .16, by suitable die operations, to include a resultant longitudinal butt seam 18. The abutting faces of this seam are joined, in proper equipment, by a hydrogen copper braze 20.

The ring 16 at this stage is irregular in comparison to any required dimension or the contour of the bushing to be finished therefrom. Tolerance limits are not considered.

The steel cylinder 16 is then placed in a die member'22 with punch portion 24 extending into the feathered end of the ring. Asecond die member26, with punch 28 is then forced against the opposite end of the ring element. The second die member is also provided with flange determining recess 30 as a zone aboutthe punch 28. The diesare axially forced toward each other until the punch portions meet, which determines a space .or clearway 32 between the die members.

The metals in the ring are axially compressed and forced to an accurate diameter as determined by the seat .34 inthe die member 22, the zone recess 30 shapes an endless flange 36, and the bushing body excess metal is allowed to flow into the clearway 32. The volume of the flange 36.

*In this single press operation, a finished bushing 38 is formed, with precision inner and outer diameters, length and flange contour, together witha polished braze seam ,40.

, 'In' the event any slight bulge develop around the plane of punch contact, it is only necessary "to use a simple reamer to remove the same. Even this possibility can be avoided by the use of a punch 42 carried by the die 26, which extends entirely through the bushing, and providing a ring seat 44 in the die 22.

The flanges about the finished bushings 38 can be confined to any cross-sectional shape or the dies can be built to allow the metal to flow into the clearway 32 to fix the flange at any distance intermediate the ends of the bushing. This free flowing flange forming method is particularly useful when portions of the flange dimensions need not be severely accurate.

For some applications, it may be desirable to coin a second feathered edge 48 along the stock 10 opposite the edge 12.

It will now be apparent that the volume of metal within a finished bushing can be calculated and this exact volume supplied by a blank 14. The press forces and confines the bushing to finished form as determined by the dies with the metals flowing from the regions containing more than necessary for that region, into the flange formation, as well as removing the irregularities in the ring and in its brazed seam.

The seam is also finished with the metal flow or internal rearrangement of the fibers which are compressed from all directions throughout the bushing, resulting in a substantial overall increase in strength in the finished bushing. The resultant increase in strength is obtained by the use of compression forces throughout the method from the first coining operation to the finished bushing.

It is to be understood that the above detailed description of the present invention is intended to disclose an embodiment thereof to those skilled in the art, but that the invention is not to be construed as limited in its application by details of construction and arrangement of parts illustrated in the accompanying drawings, since the invention is capable of being practiced and carried out in various ways without departing from the spirit of the invention. The language used in the specification relating to the operation and function of the elements of the invention is employed for purposes of description and not of limitation, and it is not intended to limit the scope of the following claims beyond the requirements of the prior art.

What is claimed and is desired to secure by United States Letters Patent:

1. The method of producing a flanged bushing comprising segregating a blank sheet of metal having a predetermined volume, developing said blank into a cylindrical ring with a longitudinal butt seam, joining the abutting faces of said seam by brazing, and axially compressing said ring while confining portions of the flow of the metal caused by said compression to form the body of said bushing while allowing the remainder including a portion of the brazing to freely cold flow into an integral flange about said bushing including a completely brazed butt seam therein, said flange being in a plane at right angles to said longitudinal butt seam, a portion of the metal in said flange being unrestrained by contact with a rigid surface during said cold flow.

2. The method set forth in claim 1 wherein portions of the metals both from the blank and from the braze are shaped into an endless flange.

3. The method set forth in claim 1 wherein the blank is of steel and the braze a non-ferrous metal, both of which are shaped into said finished bushing body and integral flange.

4. The method set forth in claim 1 wherein said bushcompressing said ring within said dies by pressure sufiicient to cause the cold metals in said blank and braze to be redistributed into a precision dimensioned bushing as determined by said dies, and allowing terminal portions of said metals to freely cold flow into a lateral clearway provided by the dies for that purpose to produce an integral flange of said metals about said bushing body.

6. The method set forth in claim 5 including the step of coining at least one edge of said blank prior to forming the cylindrical ring.

7. The method of producing a bushing to tolerances of at least one-one thousandth of an inch comprising the steps of segregating a blank sheet of metal having a predetermined volume, developing said blank into a cylindrical ring with a substantially longitudinal butt seam, and cold compressing said ring along the longitudinal axis while completely confining the metal ring between die members except for a lateral clearway portion between the die members allowing for free cold flow of the metal into an integral flange about said bushing.

8. The method of claim 7 in which the blank sheet is steel and the substantially longitudinal butt seam is joined by brazing.

References Cited in the file of this patent UNITED STATES PATENTS 652,845 Halifax July 3, 1900 653,900 Bray July 17, 1900 698,214 McKechnie Apr. 22, 1902 1,276,013 Beach Aug. 20, 1918 1,804,237 Steenstrup May 5, 1931 1,959,068 Stoll May 15, 1934 2,177,584 Salansky Oct. 24, 1939 2,269,839 Young Jan. 13, 1942 2,535,013 Freedom Dec. 19, 1950

US224757A 1951-05-05 1951-05-05 Production of precision bushings Expired - Lifetime US2722047A (en)

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2886132A (en) * 1956-12-13 1959-05-12 Gittinger Ted Bearing greaser assembly
US3058202A (en) * 1958-06-27 1962-10-16 Edward A Stalker Method of making hollow blades for compressors, turbines, and the like
US3172304A (en) * 1962-01-31 1965-03-09 Universal American Corp Multiple surface bearing
DE1242077B (en) * 1959-01-05 1967-06-08 Rothe Erde Eisenwerk A method of producing large ball bearing rings
US3367165A (en) * 1965-07-20 1968-02-06 Aldo L. Coen Method for forming a field structure for magnetic loudspeaker
US3831423A (en) * 1973-01-26 1974-08-27 Acushnet Co Method of making golf ball molds
US4048703A (en) * 1975-02-14 1977-09-20 Glyco-Metall-Werke Daelen & Loos Gmbh Collar sleeves and process and tool for the manufacture thereof
DE3431789A1 (en) * 1983-09-01 1985-04-04 Torrington Co BEARING SLEEVE AND METHOD FOR PRODUCING SUCH A BEARING SLEEVE
US4638538A (en) * 1983-04-28 1987-01-27 Oiles Industry Co., Ltd. Method of manufacturing wound bush bearing with notch-free flange and mold assembly for manufacturing the same
US4796457A (en) * 1984-07-26 1989-01-10 Daido Metal Company Ltd. Method and apparatus for producing flanged bush
US5265335A (en) * 1992-01-31 1993-11-30 Daido Metal Company Ltd. Forming method of bushing with inner sliding surface
US5274921A (en) * 1992-02-07 1994-01-04 Daido Metal Company Ltd. Forming method of bushing with outer sliding surface
US5354071A (en) * 1992-02-18 1994-10-11 Federal-Mogul Corporation Welded wear sleeve for lubricant seals
US6145185A (en) * 1997-10-31 2000-11-14 Hwang; Jeng-Yih Method for forming a connecting pipe of a high pressure connector for fluid
DE102004015977A1 (en) * 2004-04-01 2005-10-20 Ks Gleitlager Gmbh Rolled plain bearing bushing
WO2012084059A1 (en) 2010-12-23 2012-06-28 Kongsberg Automotive Ab Motor and pump assembly for mounting in a vehicle seat
CN104607515A (en) * 2015-02-13 2015-05-13 博戈橡胶金属(上海)有限公司 Flanging tool for automotive bushes
US9050639B1 (en) * 2012-08-30 2015-06-09 Middleville Tool & Die Co. Process for making an interlocking flanged bushing and products made by this process
US9908167B1 (en) 2015-03-02 2018-03-06 Western Digital Technologies, Inc. Disk drive tolerance ring with edge rounding from opposite major faces

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US652845A (en) * 1899-11-09 1900-07-03 John B Halifax Method of making semisteel bearings, & c.
US653900A (en) * 1899-10-14 1900-07-17 Nat Tube Co Method of forming welded rings.
US698214A (en) * 1901-07-11 1902-04-22 Norman Mckechnie Process of flanging metallic tubes.
US1276013A (en) * 1916-06-16 1918-08-20 Charles P Beach Process for rendering worn bushings usable.
US1804237A (en) * 1925-10-16 1931-05-05 Gen Electric Composite metal and brazing process therefor
US1959068A (en) * 1932-11-09 1934-05-15 Nat Machine Products Company Method of producing valve seat rings
US2177584A (en) * 1937-03-27 1939-10-24 Salansky Franz Method of making bushings
US2269839A (en) * 1938-10-22 1942-01-13 Leonard A Young Method of forming metallic articles
US2535013A (en) * 1946-03-20 1950-12-19 Aircraft Marine Prod Inc Electrical connector

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US653900A (en) * 1899-10-14 1900-07-17 Nat Tube Co Method of forming welded rings.
US652845A (en) * 1899-11-09 1900-07-03 John B Halifax Method of making semisteel bearings, & c.
US698214A (en) * 1901-07-11 1902-04-22 Norman Mckechnie Process of flanging metallic tubes.
US1276013A (en) * 1916-06-16 1918-08-20 Charles P Beach Process for rendering worn bushings usable.
US1804237A (en) * 1925-10-16 1931-05-05 Gen Electric Composite metal and brazing process therefor
US1959068A (en) * 1932-11-09 1934-05-15 Nat Machine Products Company Method of producing valve seat rings
US2177584A (en) * 1937-03-27 1939-10-24 Salansky Franz Method of making bushings
US2269839A (en) * 1938-10-22 1942-01-13 Leonard A Young Method of forming metallic articles
US2535013A (en) * 1946-03-20 1950-12-19 Aircraft Marine Prod Inc Electrical connector

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2886132A (en) * 1956-12-13 1959-05-12 Gittinger Ted Bearing greaser assembly
US3058202A (en) * 1958-06-27 1962-10-16 Edward A Stalker Method of making hollow blades for compressors, turbines, and the like
DE1242077B (en) * 1959-01-05 1967-06-08 Rothe Erde Eisenwerk A method of producing large ball bearing rings
US3172304A (en) * 1962-01-31 1965-03-09 Universal American Corp Multiple surface bearing
US3367165A (en) * 1965-07-20 1968-02-06 Aldo L. Coen Method for forming a field structure for magnetic loudspeaker
US3831423A (en) * 1973-01-26 1974-08-27 Acushnet Co Method of making golf ball molds
US4048703A (en) * 1975-02-14 1977-09-20 Glyco-Metall-Werke Daelen & Loos Gmbh Collar sleeves and process and tool for the manufacture thereof
US4638538A (en) * 1983-04-28 1987-01-27 Oiles Industry Co., Ltd. Method of manufacturing wound bush bearing with notch-free flange and mold assembly for manufacturing the same
US4693107A (en) * 1983-04-28 1987-09-15 Oils Industry Co., Ltd. Method of manufacturing wound bush bearing with notch-free flange and mold assembly for manufacturing the same
DE3431789A1 (en) * 1983-09-01 1985-04-04 Torrington Co BEARING SLEEVE AND METHOD FOR PRODUCING SUCH A BEARING SLEEVE
US4796457A (en) * 1984-07-26 1989-01-10 Daido Metal Company Ltd. Method and apparatus for producing flanged bush
US5265335A (en) * 1992-01-31 1993-11-30 Daido Metal Company Ltd. Forming method of bushing with inner sliding surface
US5274921A (en) * 1992-02-07 1994-01-04 Daido Metal Company Ltd. Forming method of bushing with outer sliding surface
US5354071A (en) * 1992-02-18 1994-10-11 Federal-Mogul Corporation Welded wear sleeve for lubricant seals
US6145185A (en) * 1997-10-31 2000-11-14 Hwang; Jeng-Yih Method for forming a connecting pipe of a high pressure connector for fluid
DE102004015977A1 (en) * 2004-04-01 2005-10-20 Ks Gleitlager Gmbh Rolled plain bearing bushing
WO2012084059A1 (en) 2010-12-23 2012-06-28 Kongsberg Automotive Ab Motor and pump assembly for mounting in a vehicle seat
US9702377B2 (en) 2010-12-23 2017-07-11 Kongsberg Automotive Ab Motor and pump assembly for mounting in a vehicle seat
US9050639B1 (en) * 2012-08-30 2015-06-09 Middleville Tool & Die Co. Process for making an interlocking flanged bushing and products made by this process
CN104607515A (en) * 2015-02-13 2015-05-13 博戈橡胶金属(上海)有限公司 Flanging tool for automotive bushes
US9908167B1 (en) 2015-03-02 2018-03-06 Western Digital Technologies, Inc. Disk drive tolerance ring with edge rounding from opposite major faces

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