US866026A - Apparatus for forging car-wheels. - Google Patents

Description

J. M. HAEQSBN.

PATENTED SEPT. 1?, 1907.

APPARATUS FOR PORGING GAB. WHEELS.

FIG, 1

AYPLIOATIOEH FILED KAY 19 19%.

2 SHEETS-BEES? 3.

INVENT R KW/40H. 4E Zmww -t No. 866,026. PATBNTED SEPT. 17, 1907.

J. M. HANSEN. V APPARATUS FOR PORGING GAR WHEELS.

APPLIGATION I'ELED HAY 19* 1906.

2 SHEETS-SHEilT 3.

" FIG. 4

0) WITNESSES. NVENTOR.

* Q li la; w

JOHN M. HANSEN, OF PITTSBURG, PENNSYLV PATENT OFFICE.

ANIA, ASSIGNOR T0 FORGED STEEL WHEEL UOMPANY, 0E PITTSBURG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIAI APPARATUS FOR FOBGIEG OAR-WHEELS.

Specification of Letters Patent;

Patented Sept. 17, 1907.

Application fileel an is, less. Serial lio- 317,739.

To all whom it may concern: Be it known that I, JOHN M. Henson, a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and pseiul Improvement in Apparat'hs for Forging Car-Wheels; and I do hereby declare the following to be a full, clear, and exact description thereof. My invention relates to apparatus for the manufacture of forged steel car and similar wheels. Its obiect is to provide apparatus for the thinning of the web portion, the development of the hub portion and the formation of the tread or rim portion by which wheelscan be formed either from a circular blank or from a. square or other polygonal blank without loss oi metal nd at minimum cost. Y

The apparatus is especially adapted for she practice of the method covered in an application filed by'me of even date herewith, Serial No. 317,738 such being one of tho specific methods set forth in another appli cation filed by me of even date herewith, Serial No.

The apparatus includes the employment of a bowlshaped or female die having a central opening and an annular follower dio arranged within said central opening, a convex or male die adapted to press the blank into the bowlshapod die, and a piercing mandrel centmlof said rnslo die adapted to pierce theblank and force it downwardly into the central opening ofthe icmulc die, so that when the blank is so confined through the annular follower die the rudimentary hub formed by the piercing of the blank may be upset to form the hub of the wheel. Where the apparatus operates on e. square or other polygonal blank 1 form theupper walls 0! the two main dies substantially vertical and providean annular'rim upsetting di e around the upper male die so that after the blank has been our tied down into the lower di'o and its outer edges turned upwardly this annular rim forming ,die'will pass between the two main dies and compress the irregular edge portion of the blank, causing the motel of tho angular or projecting portions thereof to flow letersilly and fill up the depressed portions and thereby bring the, blank to true circular form with an oven top edge.

In the accompanying drawing Figure 1 is a vertical k sectional view pr'rrtly in full lines showing the dies; Fig. 2 i s'a similar view to Fig. 1 showing the upper or male die and piercing punch forced iorwardaso as to forgo the blank, turn it into bowl-shape and pierce it;

FigxS shows the rim forming die depressed and operating upon the upper angular edge portion of the bowlshsped blank; Fig. 4 shows the lower annular die raised to upset the hub portion; Fig. 5 is a perspective View illustrated in full lines of completed blank, and

in dotted lines the condition of the upper edge prior to the action of the annular tread forming die.

The apparatus comprises the lower main -or female die 1 and th'enpper main or male die 2. The lower die is preferably bowl-shaped as shown, the upper wall thereof being vertical as at 3, below which is the curved portion 4 leading down to a central opening 5. In the drawing as shown the die 1 is stationary and passing upwardly through the some is the annular follower die 6 operated in any suitable way, such as by the hydraulic ramv, this die a serving to upset the hub por' tion of the blank after it is pierced and having a central 7 opening8 for the reception of the piercing die 9;

The upper die 2 is provided withthe annular projection 10 corresponding to the interior of the bowlshaped blank as forged and having within the samethe hub recess 11 which, as illustrated, operates in connection with the curved hub forming recess or base 4 of the bowl-shaped die 1. The piercing die 9 is adapted to operate centrally of the upper male die and can bempunted in any suitable way so as to engage with the central portion of the blank, pierce the same and in so doing force the metal of the central or hub forming portion of the blank entirely to one side thereof. I have illustrated this die as secured to the upper or male (lie 2 fitting within the recess 12 thereof and held by a suitable key 13. This mandrel 9 is pro- 7 vidcd with a. piercing punch 14 at its lower end back oiwhich the mandrel is curved or cone-shaped as at 15 to spread the metal after the piercing opemtion.

'It will be noticed that alter the piercing of the blank this mandrel 9 enters within the central recess 8 oi the iol gm when operating upon'a square or other polygonal blank in order to provide for the pressing ofthe upper, edge thereof, to form an even top edge, as above described, I provide the annular rim forming die 16 which is shown as operated by suitable rains 17 and which so closely around the male die 2 and the ring 18 of which, when forced down as shown in Figs. 3 and enters within the space between the dies 1 and 2 fitting closely to theyertical wall 3 of the bowl-shaped die 1 and traveling along the vertical outer face 19 of the male die 2 and acting in its compressing stroke upon the upper edge of the blank when confined between said vertical faces 3 and 19. The ring 18 of the annular die 16 has a flat lower face as shown. Such annular rim forming die. may of course be employed with any form of cliesf to operate upon any rip-turned irregular edge portion in order to cause the lateralor peripheral flow of the metal and even up the top edge thereof.

The operation of forging the blank with the above i brought to aforgin gheat and placed upon the lower. die

blank has beenemplnyed this completes tlwcoperation described set of dies isas follb'wkf The heated hlank 20 ,tial ly' bowl-shlipe,.as shown at '21. .The punchfi ifi. l 'the construction illustrated'descends with Ihis upper and finding it upwardly into. the hub forming space 11 .of the z pper die z the hub thus-being inrrned within pressions shown in dotted lines in mid figures,

This operation of course can be applied to an y polygonal bowl-shaped or concavo-conve; blank. In this way 'into theihub portion of the blank and, where a polygonal blankris employed, utilizing themetal of the coris either a circulnnbhmk or an ordinary square slab such as would he cut frorn'a rolled slab *ol steel, .is.

l,'as illustrated in Fig. l. I The uppendieZ- tll6l1-d9- scends, forcing the blank doyvnwardly into the bowl?- slsapedicavity of the die 1 and forging it inwsubstan" die 2 and engages centrally vitli the bla nk} piercingtlie same by means of; the piercing poil1t 14 'and' their througlf its lower end 15 fo'rcesthe central or.

huhdorhiiug portion l of the blank downwardly and 7 spreadb'it within the central opening 5 of the lo'v ver die, as shownat 22 '2. The steps tocon'iplote the blank svithtlie apparatus above described are to-upset th'erudimentaryhuli 22 and to compress the irregular edge p rti n 23 and these stps can take place simultanews]? or successively in any orderdeeired. To form the hill) the annular io'llovirer ,die6 is ibrcc dnrpwardly as shown-in Fig. 91, upsetting the mdirnemary hnb 22 said hub forming space ll and the curved neck portion 4 at the base oithe bowl-shaped diefl: IN a circular of the apparatus. If, however, a squafe or rther polyg: onal blank is employed it is necessary to wen" up the top edge of theblank-and for that purpose he annular rim forming die 1,6 is forced downwardly Bn lhat its ting 18 enters-between the vertical lipper por m 3 oftlie lower die and the ventical wall 19 of the upper die 2, V and compresses ot'upsets the upper edge 0' the blank; as shown in 3 and 4. As shown in Figs. 2 and 5 tlie'cbrnel' portions 24 of the polygonal blank have by the previous die -forging"operation been turned upwardly leaving the; depressions 25 said projectir us and deand in full lineejin Fig. 3. Under the cwupression of this-tread or. rim forming die the metal ol the projections 24 is caused to flow laterally or peri herally and filling the depressions25 and so complete the blank.

the blank is broiaght'withjn the dies to proper shape for completing the forging of the wheel, as fully described in said applications Serial- Nos. 317,733 and 317 ,738. I am enabled by means of these dies to forge theblank to shape without loss of nietal, utilizing the central portion of the blank for forming the hub, while thinning the iveb portion 26 thereof and forcing the metal thereof ner portions threo'f to fill out the depressions of the blank and'thus enabling me to form a bowl-shaped blank from a square or like polygonal blank, and from a square blanket smaller width than is necessary in "tough, tread portion of the using a circular blank. [am also enabled byso comwork the same and increase its density and toughness 0 throughout the entire t-read iorming portion,- imprsiving such portion for the subsequent formation of a dense,

finished wheel.

What I claim is:

l. -,ln apparatus tor forging virheel blanks. the combine tlon of'a pals of dles each having a central hub.forlnln.- chvltvi piercing mandrel adaptedw to pierce the blank and-force it into one of sald cavltles, and a reclpr'ocatlng annular fpllower dle central of the meld die and adapted to engage wlth the rudlmentnry hub'formd-by the pllclng mandrel and upset the metal wlthln. the hub formlng cs'vltles' of the dles and aroundthe plerclug maudreL v 4 2. In apparaltus for forglng wheel blanks, the combina- Oil of a temale dle and a male die having an annular pcojectlon' and adapted to, compress the blank within the spread it wlthln one-of'sald cavltles, and ab annular foll0Q4'?l d'e adapted to engage with the rudimentary hub so formed and upset it wlthln the die cavities of sold bowl Shaped and male dlei.

' 3. ln apparatus for forming wheel blanks, the combinatlon of an Integral {emale dle having a cavity provlded wlth a substantially concave-convex bottom and substantlnlly vertical walls beyond the same, a male dle adapted to enter the same and compress the blank, and an annular rim forrnlng d1 flttlng around the male die and adapted to enter between it and the outer wall of the female dle and compress the upturned edge of the blank.

' 4. In apparatus for formlng wheel blanks, the con1blnstlon of an'lntegralle'male dlc having a cnvlty with sub-' stantlally vertical virall portions. a male die having a substantially vertical outer face of smaller diameter than the Ieninle dle and arranged toenter, the cavity thereof, and -un annular rllnformlng dle surrounding the male die and Lndependently bistable thereof and-arranged. to enter the ,annulsnapace-betylasn tbe'male and female dies. e .5, In apparatus for formlngvheel'hlanks, the comblnatton of "a f'elnal'dle hairlng a cavlti wltli subsfantlallyglOO vertical wall portlqnqnnd a central opening at the base t ereof, as male having a substantially .vertloal outer face of smaller dlamster thamthe temale dle'snd rallied to enter the may Ibex-sofas central piercing mandrel .arranged to pierce the blank and spmdlbyithln the lower cavity ofthefemale die. and an annular rim formlng die surronndlngmlie male (Head lndpandently movable thereof and arranged to snterltlte nnular space between the male and female dies. I r

6. In apparatus for form] ybeel blanks, the comblnatlon of'a female die having a cavity with substantially vertlcal wall portions and a central. opening at the base thereof, a msledle having a'sublljn'tlally vertlcal outer face of smaller diameter than the .teinale die and arranged to enter the cavity thereof. a central, piercing mandrel arranged toplerce'the blank and spread it within the lower cavlty of the female dle, nn annular rlm fornun die -=nr rounding the male die and Independently movable llr real and arranged to enter the annular space between lh male and female dies, and an annular follower llu opuutlng centrally of sald dies and arranged to upset the metal around the plerclng mandrel.

'In testimony whereof, I the sald JOHN M. HANSEN have hereunto set 'my land.

' JOHN M. HAlfiEN.

- Witnesses:

F. W. WINTER, ROBERT C'. 'ljo'lj'rnn.

Images