US1531426A

US1531426A - Method of spinning stepped flanges and apparatus therefor

Info

Publication number: US1531426A
Application number: US704895A
Authority: US
Inventors: Struchen Fred
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-04-07
Filing date: 1924-04-07
Publication date: 1925-03-31
Anticipated expiration: 1942-03-31

Description

March 31. 1925. 1,531,426

- F. STRUCHEN METHOD OF SPINNING STEPPED FLANGES AND APPARATUS THEREFOR Filed April 7, 1924 quent operation.

Patented Mar. 31, 1925.

UNITED STATES PATENT OFFICE.

FRED STRUQHEN, OF ERIE, PENNSYLVANIA.

METHOD OF SPINNING STEPPED FLANGES AND APPARATUS THEREFOR.

Application filed April 7,

To all whom it may concern:

Be it known that I, FRED STRUOHEN, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented new and useful Improvements in Methods of Spinning Stepped Flanges and Apparatus Therefor, of which the following is a specification.

The invention is designed to facilitate the forming of receptacles having stepped flanges. Ordinarily this is accomplished by a stamping operation, the initial flange being formed in one stamping operation and the stepped flange being formed in a subse- Ordinarily the flange is then trimmed and beaded by a spinning operation.

With my method and apparatus one flange is formed by stamping with the receptacle and the stepped flange is formed by spinning so that the trimming, offset flanging and beading may be done in a sequence of operations on the spinning machine, thus reducing the operations and the time and expense in forming such offset flanges. Features and details of the invention will appear from the specification and claims.

The apparatus forming the subject-matter of the invention and by which the method may be practiced is shown in the accompanying drawings as follows a Fig. 1 shows a plan view of the spinnin machine.

Fig. 2 a cross section.

Fig. 3 a sectional view in perspective of the flanged receptacle as it comes from. a stamping operation.

Fig. 4. a sectional view in perspective of the receptacle formed with the stepped flange.

Fig. 5 a sectional view in perspective of the completed article.

Fig. 6 a plan view of the flange deflecting tool.

Fig. 7 a side elevation of the same.

Fig. 8 an end View of the tool.

1 marks the bed of the machine, 2 the spinning head spindle, 3 the spinning head, 4 the flanged article as it comes from the stamping operation and as it is placed on the head, 5 the follower plate for holding the article on the spinning head, 6 the tail spindle for holding the head 5 in place. This apparatus is common with spinning tools.

A tool holding base 7 is mounted on the 1924:. Serial No. 704,895.

frame 1 and a swinging tool frame 8 is mounted on a pin 9 carried by the base 7. A lever 10 is fulcrumed on a pin 11 on the base 7 and has a. pin and slot connection with the frame 8 whereby the frame may be swung to bring the tools into operative position with the fl'ange- 7 Cutting disks 13 are mounted on a post 13 at the rear end of the frame 8 and are brought into cutting position with relation to the flange 4 in the initial operation on the machine. This trimming is very rapidly done by these disks-in fact, completed practically in a single rotation. The stepped flange forming tool is then thrown into 0 era-tion. It comprises a tool 14 pivotaly mounted on a pin 15, the pin being carried by a bracket 15 on an adjustable base 15". The base 15 is adjustably mounted. The tool base 7 is adjustably mounted on the frame 8. The tool 14 is adapted to be swung by a lever 16, this lever being mounted on a pin 17. The pin 17 is secured in a post 18 and the lever is connected with the tool 14 by a pin and slot connection 19. By pulling SOv the lever up with the frame in the position shown in Fig. 8 the front end of the tool is swung up into position to operate on the flange 4:.

After the forming of the stepped flange a bead is formed on the stepped flange by means of a beading wheel 20 mounted on the post 18. This is swung into operation as the tool 14: drops back from engaging position by throwing the end of the lever 10 downwardly.

The effect of the stepped flanging tool on the flange 4 is to form an offset step 21 with a flange 22 extending outwardly from the stepped portion 21, these parts being formed of the metal previously in the flange 4. The edge of the flange is beaded forming a bead" 23 as shown in Fig. 5 by the beaded wheel 20. I

The stepped flangeforming tool is shown in detail in Figs. 6, 7 and 8. It has the camming and deflecting surface 24 which engages the edge of the flange 45 crowds it over to the offset position, and into a slit 25 which straightens up the deflected portion of metal to the plane of the final flange 22 and the end of the tool operating against the intervening metal between the base of the flange 4; and the metal of the flange 22 forms the step 21 through the spinning action of these two surfaces. Thisitool spins downthe:metal'yery rapidly and leaves finished edge.

What I claim as new is 1. The method of forming stepped "flanged .througl1 the actionzof a camming and .de-

,fiectiii g surface fforced i-ntospinning rela- .t1 on .hy a thrust exerted in adirection .at .r ght angles .to the axis of the-(cylinder.

2. I111 eilnethiodof forming :step p e d flange-d cyhnd which consists in ;rotating a flanged cylinder, trimming the flange ivvhile so rotated spinning the flangezan'dstep by r gijng: opposite sides. 01f fthe flange and "ting the. flange sidewise through the agctionof: a camming'; and deflecting jsur-face ,forced into spinning relati0n:by-a thrustex- Vertedgin atdirection ,at right angles ItO the axis qoflthfe cylinder, saidytrinnning ,and spinning operations being successive but .Withia continuous rotation of the cylinder.

3. In' ti-spinning imachine, the combina- 1tion.offa ,head, a vfiangedeflecting. and spinning tool in operative vrelation tothe head and having a z-fla-nge Ie'ceiving slit having walls adapted toxengageuopposi'ng surfaces ofagflangeand a flange deflecting surface leadingatoithe .slitanfd a step iorming face x1e ailing 1 vfrom ;'the-1-Slit.

;;In--;a spinning machine, the combinamingvtool in operative relation rtowthenhead hingrtothesslit and 1 a-step forming face leading from theslit, and ,meansforinoving the tool @toward and from the. head icomprising a swinging mounting;

In a spln'ning anachine, the combina tion of a head, a. cuttenffor cutting vai'flanged cylinder gm ounted .onzth'e he ad; a flange spinning {tool .inoperativerelation to the head ha-f, n g a Jflange -re cei-vin g.,s1it having Walls adapted to,1engage opposing .surtaces of a flange, anda flange deflecting'snrface leading ,to .the slitiand a step forming .face lead ing fronrthe slit. p

.7. In aspinning"machine,the zcembination of a head, a cutter for cutting a-fianged cylindermounted onthe :head, a flangespim .ning .toollin operative relation ate the head having a-Vflange .receivingslit liaving-walls adapted to (engage opposing sufitaees-ofa flange, a flange deflecting -suri"ace-::leadingato the slit and a :step -.for1nin-gw face --leading {from :the slit, and means cperatingthe cutter andsstcp flange'zformingitcolwin sequence.

In testimony \iiheireoff :I' hae exincreuirtio set my hand. p

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