US1760558A - Method of making cylindrical articles from flat blanks - Google Patents

Method of making cylindrical articles from flat blanks Download PDF

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Publication number
US1760558A
US1760558A US152159A US15215926A US1760558A US 1760558 A US1760558 A US 1760558A US 152159 A US152159 A US 152159A US 15215926 A US15215926 A US 15215926A US 1760558 A US1760558 A US 1760558A
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United States
Prior art keywords
channel
cylindrical
blank
flat
cylinder
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Expired - Lifetime
Application number
US152159A
Inventor
William H Klocke
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Cleveland Graphite Bronze Co
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Cleveland Graphite Bronze Co
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Publication date
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Priority to US152159A priority Critical patent/US1760558A/en
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Publication of US1760558A publication Critical patent/US1760558A/en
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    • 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
    • B21K1/76Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/761Making machine elements elements not mentioned in one of the preceding groups rings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • B21D5/015Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes
    • 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
    • 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
    • Y10T16/00Miscellaneous hardware [e.g., bushing, carpet fastener, caster, door closer, panel hanger, attachable or adjunct handle, hinge, window sash balance, etc.]
    • Y10T16/39Ferrules, rings, and thimbles
    • Y10T16/42Ring ferrules
    • 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
    • Y10T24/00Buckles, buttons, clasps, etc.
    • Y10T24/39Cord and rope holders
    • Y10T24/398Bendable, ductible
    • 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
    • Y10T29/49673Die-press shaping

Description

y 1930- w. H. KLOCKE 1,760,558
Patented May 27, 1,930
UNIi-TED s'r-A'ras PATENT orrlca WILLIAM H. xnocxn, or woonnavmq, NEW YORK, ASSIGNOB To run cLnvELANIJ omrn'rn nnoNzEcomrANY, or CLEVELAND, OHIO, A CORPORATION or OHIO unrnon or MAKING OYLINDRIGAL ARTICLES anon: FLAT BLANKS Application filed December 2, 1926. Serial No. 152,159.
7 The present invention, relating, as indicated, to a method of making bearings, is particularly directed to an improved method of forming flat strips into cylindrical bear-.
ings or other articles and to producing a finished cylindrical article in this general man:
the means hereinafter fully described and particularly pointed out in the claims; the I annexed drawing and the following description'setting forth in detail one approved method of car ing out the invention, such disclosed mode, owever, constituting but one of the various ways in which the principle of the invention may be used.
. In said annexed drawing:
Fig. 1 is a view in perspective of a strip of flat stock; Fig. 2 is a transverse sectional view of the stock after the first step or operation of my improved method; Fig. 3 is a view of. the
partly formed article of Fig. 2 when placed in position for the finishing operation between dies formed for that purpose; Fig. 4 is a transverse sectional view of the completed cylinder; and Fig. 5 is aview similar to Fig. 3, but illustrating a further stage in the manufacture of the bearing shown in Fig; 3.
p In forming flat stock into cylindrical articles it is customary to first form a strip of flat stock into a U-shaped piece between male and female dies having the contour and dimensions ofthe finished cylinder. In other words, the strip of flat stock is forced into a semi-cylindrical die which has a diameter equivalent to the finished outside diameter of the cylinder'to be produced b means of a cylindrical punch w ich has a iameter equal to the finished inside diameter of the cylinder to be produced. The result of this operation is the formation of a U-shaped strip, the bot-.
tom portion of which is of the finished size and shape. The following operations consist in flowing the upwardly projecting and parallel sides of the U over a cylindrical mandrel-until the edges of the two sides meet.
1 It is then necessary to again work the cylin-' der between dies to force the two abutting edges into contact and this last operation is really'a swaging operation made necessary because otherwise the two edges of the metal will project tangentially upwardly and outwardly away from the-mandrel due to the in herent resiliency of the metal. The, final forming operation invariably results in either a thickening of the strip adjacent to the seam,
that is the abutting edges, or to the formation of a flattened portion along this seam, so that the resulting cylinder is not accurate in thickness nd is not truly cylindrical.
T e present invention is directed to a method of producing bearings to avoid this lack of uniformity in the thickness of the metal and to secure a perfect abutment of the meeting edges of the stock and a truly cylindrical contour in the finished article.
, Referring now to Fig. 1 there is shown a blank of flat stock 1 of suitable material, such,
for: example 'as bearing brass. This blank is.
first placed over a semi-cylindrical die, into which it is pressed by means of a cylindrical punch of suitable form and bent and worked into the channel form 2, which is shown in Fig. 2. The form which is given to the curved bottom portion 3 of the blank 2 can be seen by reference to the circle 14 shown in dotted lines within the channel, which represents the finished inside diameter and form of. the cylinder to be. produced, and by reference to this it will be seen that the blank has been formed with its corners 4 bent about a shorterradius than the radius of the circle 14, that is a radius that is shorter than the finished inslde' radius of the cylinder. The upper edges 5 of the channel are bent inwardly out of parallelism so that they incline toward each other.
The preliminarily formed-channel 2 is next finished in a similar operation-in the manner having a semi-cylindrical recess therein having a diameter equal to the outside diameter of the cylinder tobe produced. The channel initially rests upon the edges or corners of this recess 9 in the die 8, and the channel is worked into its finished form by means of a die 10 having a semi-cylindrical recess 11 therein of diameter equal to the finished outside diameter of the cylinder, which is moved toward the die 8, en gin over the u per ed es or portions 50 the c annel blan 2. The action of these dies as they approach each other i is of course to force toward each other and die -8 an the mandrel 7, and in the other case of the upper die 10 and the mandrel 7, and this action is entirely different from the folding of the projecting u per ed of the blank, which is the action e ected uring the corres'vpgnding o ration of the present meth- 'f mm b ksl b1 u h ito courses rings ac i ty, uetot e inherent redfiencqbut whe metal is forced between dies it is caused to flow and retain the sha into which it is flowed, and that is the action which is produced on the channel blank du the forming operation just'descri Hi the result t at the upper edges of the lank abut against each other and retain the true cylindrical sha into which they as have been caused flow uring opera:
tion.
Thefinished cylinder is of absolutely 1111-.
form thickness and is a true cylinder, as shownin Fig. 4. The chief difierence between the presentmethodandthe one now in neral use is that in the present method parts of the blank are worked and caused to fiow dur' both the: orming and .the finishmg operat1ons,'and.because-of this action the blank in the formwhich it is'given between the dies. In the method now in generaluse changed during the operation, the
operation'merely causing the upper portions, or the sides of the channel, to b folded over against eachothenjthat is, first one-half of the cylinder is formed and then the other half, and in case is any portion of the blank caused to. flow dies.
In the present method. all portions of the blank are at some time during the formation is bent over a die or article" ,tion formed 0 a pluralit of radii and then desired finished article and then e'firstoperation forms.- the-lower half of the cylinder and-this portion of' the blank is not operated upon or ofradii 'difiemnt'from that o the d I resu tin pro not is suitable for uses to which the pro net of the previous process could not be appliedat all. I v
Other modes of applying-the prmclple of my invention may be employed instead of the one explained, change being made as regards the process herein disclosed, provided thestep or steps stated by any of the following claims or the equivalent of such stated step or be employed. v 4 s I therefore particularly point out andd rectly claim as'my invention 1. In a method of making cylindrical articles from flat blanks, the steps which consist in first forming a fiat blank into a U- shaped channel of which the base of the U has a plurality of radii diflerent from that of the desired-finished cylinder, and then causing the metal in the side walls and bottom of the U-shaped channel to flow into true cylin-f I drical shape. 1
2. In a method of making cylindrical articles from flat blanks, the steps which con-' sist in forming a flat blank into a U-shaped channel havin a non-cylindrical base porfo rming such non-c rical base, portioninto truly c lindrica form and forcing the side walls 0 said channel into circular form I with abutting edges. I
- 3. In a -method of making cylindrical articles fromfflat blanks, the steps which consist in forming a flat blank into a u-shll-ped channel, the base of which is larger than the" channel into 0 lindrical form while causingv all ofthe meta in said blankto flowbetween 4. In a'metnod of makingcylindrical articles from flat blanks, the steps which consist in forming a flat blank into a U-shaped channel, the base of which is'lar rthan the desired finished article and then channel into cylindrical form while-mul taneously flo the metal of-the channel and changing t e] curvature of. the base thereof. i
a 'method' of making cylindrical articles from flat blanks, the steps which conforming a flat blank into a Ursha'ped channel having convergently directedupper arms and a base portion havin a plurali cylinder, and-then causin the metal in sa d arms toflow' into cylindri thereby acquire a permanent set.
an. er cylindrical ormmgsaid Y formandf articles from flat blanks, the steps which consist in fbrming a flat blank inte a. U-shaped channel having convergently directed upper arms, and a base portion of a plurality of radii different from the desired finalradius, and then forming said channel into a c'ylinder while causing all of the metal in said channel to flow between dies and thereby acquire a permanent set.
Signed by me this 19 day of November,
WILLIAM H. KLOGKE.
US152159A 1926-12-02 1926-12-02 Method of making cylindrical articles from flat blanks Expired - Lifetime US1760558A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609861A (en) * 1950-01-28 1952-09-09 Schaefer Equip Dies for making truck lever connections
US2883738A (en) * 1955-03-09 1959-04-28 Diamond Chain Company Inc Method of making annular elements for power-transmission chains
US3277561A (en) * 1964-02-10 1966-10-11 Dodge Mfg Corp Method of making crowned pulleys
US3418706A (en) * 1967-09-25 1968-12-31 Charles S. White Method and apparatus for making bearings
US4156299A (en) * 1973-11-21 1979-05-29 The Detroit Edison Company Heat exchanger tube ferrule
EP0103044A1 (en) * 1982-09-15 1984-03-21 Breme, Jürgen, Prof. Dr. Method of producing annular bodies, particularly blanks for synchronizing rings
US5357776A (en) * 1993-06-16 1994-10-25 Avibank Mfg., Inc. Method of forming bushing rings
US6401306B1 (en) * 1997-01-11 2002-06-11 Poly-Clip System Gmbh & Co. Kg Sealing clip for bags and tubes, and matrix for sealing the latter
US20170122000A1 (en) * 2015-11-02 2017-05-04 Feral Pty Ltd Wire retaining fence post

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609861A (en) * 1950-01-28 1952-09-09 Schaefer Equip Dies for making truck lever connections
US2883738A (en) * 1955-03-09 1959-04-28 Diamond Chain Company Inc Method of making annular elements for power-transmission chains
US3277561A (en) * 1964-02-10 1966-10-11 Dodge Mfg Corp Method of making crowned pulleys
US3418706A (en) * 1967-09-25 1968-12-31 Charles S. White Method and apparatus for making bearings
US4156299A (en) * 1973-11-21 1979-05-29 The Detroit Edison Company Heat exchanger tube ferrule
EP0103044A1 (en) * 1982-09-15 1984-03-21 Breme, Jürgen, Prof. Dr. Method of producing annular bodies, particularly blanks for synchronizing rings
US5357776A (en) * 1993-06-16 1994-10-25 Avibank Mfg., Inc. Method of forming bushing rings
US6401306B1 (en) * 1997-01-11 2002-06-11 Poly-Clip System Gmbh & Co. Kg Sealing clip for bags and tubes, and matrix for sealing the latter
US20170122000A1 (en) * 2015-11-02 2017-05-04 Feral Pty Ltd Wire retaining fence post
US10329794B2 (en) * 2015-11-02 2019-06-25 Feral Pty Ltd Wire retaining fence post

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