US1007941A - Manufacture of car-wheels. - Google Patents

Description

J1 MLHANSEN. MANUFACTURE. OF GAR WHEELS.

Patented Nov. 7,1911.

APPLICATION FILED 11017.11 1909.,

3 SHEETS'SHEET 1..

FIG. 1

a a Z 2% a 2 1. L B E 7 w 22 J: M. HANSEN. MANUFACTURE OF CAB WHEELS.

APPLICATION FILED N0V 1L 1909.

Patented Nov. 7,1911;

' 3 SHEETS-SHBET 2.

WITNESSES. j. 6?, 7114M.

- J. M. HANSEN. MANUFACTURE OF GAR WHEELS.

APPLICATION FILED NOV. 11, 1909.

3 SHEETS-SHEET 3.

' Patented N 0v. 7, 1911.

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These dies are suitably connected to their die carriers, and itis to be noted that the annular die 22 has an outwardly projecting shoulder 30 while the annular die 26 has a like inwardly projecting shoulder 31 by which the working faces of the two annular dies are held in propenalinement at the completion of the forging operation. Such shoulders 30, 31, also provide for transmitting' the full pressure brought upon the outer'd ie carrier 18 and the outer die 26 h to the inner annular die 22,. sq that the entire power ofthe press can be exerted for confining and condensing the metal of the finished wheel. Suitable clearance for the independent movement of the severalmandrel or die carriers is provided, such as the aoe 33 between the mandrel carrier and t e die 22 and the space 34 between the die :9 carrier 18 and the die carrier 19.

It will be noted that 'the annular die holder 4 has formed on its sides the lugs or hooks 38 and that the annular die carrier .18 has suitable depending swinging hooks 35.39 which are adapted to engage with the ooks 38 when the dies are brought to final :iiositi'on as illustrated in Fig. 3; and: that in this way the annular die holder 4 after the completion of the forging operation is raised as shown in Fig. 4 topermit the withdrawal of the wheel. As above stated, the main feature of my invention consists in first forging the hub and while it is confined in the dies, forging 85 the rim portion of the blank. I may therefore use any suitable blank for this purpose, though I prefer to employ a heavy circular rolled slab as indicated in Fig. 1,

and I will describe the invention as applied 40 to the forging of a wheel therefrom. The

slab is. raised to a suitable forging heat, and is placed upon the rest 2 in position to be operated upon by the dies; and in the usual operation the die 22 is-forced downwardly,

together with the mandrel 21, the firstv operation of the dies being to bend the blank into substantially bowl form forcing it within the annular vertical portion 13 of the ring die 3. As the dies descend fur- 60 therwthe metal is compressed between the die 22 and the die face 9 of the bottom die 7, and this acts to force the metal as so ongaged inwardly into the hub cavity 8, 23, and around the mandrels 14 and 21, as illustrated in Fig. 2, so developing the hub,

which is completely formed b the piercing thereof by the central mane rel. As the blank has thus been forced downwardly from its seat the outer edge 40 of the blank is thrown upwardly and raised within the vertical walls 13 of the female die, as shown in said figure. While the blank is thus confined the die 26 is forced downwardly as shown in Fig. 3 and--it'forges the edge portion 40 f the blank downwardly into the rim and flange forming seat formed by the annular seat 10 of the die 7 and the lower portion-11 of-the' ring die 3, so forging the rim 41 upon the wheel, and if a car wheel is to be formed as illustrated in the drawing, also forging the flange 42 upon the blank; this forging operation thinning the remaining port-ion of the web and forcing the metal thereof so as to fill the cavity between the bottoni' die 7 and the ring die 3 and e dies 22 and 26, so completing the forgin of the web and rim. In this descending stroke the shoulders 30, 31, of the dies 22, 26, engage so as to bring the web forming faces 24 and 27, of said dies into proper alinement, and also to distribute the entire forging pressure upon the blank,

forcing down the inner annular die 22 with the outer' annular die 26, completin the forging of the web and confining the blank for the final piercing of the hub accomplished by the raising of the mandrel 14 by means of the plunger 15. i As the blank is so confined an extremely heavy forging pressure can be brought upon the same so as to condense or compact. the tread and flange and so complete the forging of the wheel.

As the die carrier 18 descends the hooks 39 thereof engage with the hooks 38 of the ring die holder 4, and as the dies are raised as shown in Fig. 4 the die carrier -18 lifts the ring die holder 4 with its ring die, so exposing the forged wheel ready to be withdrawn fromt e press. \v

The operation is largely the same in connection with the apparatus shown in Figs. 5 and 6. In this case the upper annular die 50-is made the full width of the web portion 51 of the blank, while the outer annular die 52 is made of substantiall the width of the rim portion 54 of the finished wheel, the lower die 'i, the mandrel 14, the ring die 3 and its holder 4 and the mandrel 21, together with the die carriers 18 and 19 and the mandrel carrier 20, being the same as in the apparatus illustrated in Figs. 1 and 4. The operation is substantially the same, the annular die 50 descending and bending the blank into substantially bowl shape as shown in Fig. 5 and forcing part or all of the metal of the web portion thereof inwardly toform the hub portion 55, while the edge portion of the blank is turned into upright position as shown at 56. Upon the downward movement of the die carrier 13 the annular die 52 then forces downwardly the edge portions 56 of the blank and so forges the rim portion 54 thereof and compresses the same Within the dies, as

above set forth.

What I claim is:

1. The improvement in the art of forging steel car wheels, consisting in die forging a heated blank to develop the hub portion of the wheel, and then, while confining the form. the axle eye in the blank and at the shape of tread and flange.

heated blank to thin the web portion thereof and develop the hub portion, and then, WllllQ: confining the blank in the dies forming such hub, portion} forging the rim' portion to finished shape'of tread and flange.

3. improvemgnt in'the anrt of forging steelpcarwheels, consistin'glg'nforging a heated blank into bowl-shape, and then While confining the blank in the dies in which it was so for1ned,,forging-the rim portion to finished shape bf tread and flange.

a. The improvement in the art; of forging steel car wheels and the like, consisting in forging a heated blank to partially develop the hub portion. of the wheel and partially same heat forging theflrim portion thereof to finished shape and completingthe forging of the axle eye.

5. The improvement in the art of forging steel car wheels and the like, consisting in so for ing a heated blank as to thin a portion of the web and force the metal inwardly to develop the hub and then while confining the blank in the dies, forging the remainder of the web and forging the rim portion;

6. The improvement in the art of forging Wheels and the like, consisting in .g' a heated blank as to thin a portion the Web and then while confining the blank in the dies, for ing the remainder of the web and forging t e rim. portion.

7. The improvement in the art of forging steel car wheels and the like, consisting in so forging a heated blank as to force a portion of the nietal inwardly in thinning the web, and while confining theblank in the forging dies, by a separate stroke so -forging the remainder of the web as to force the metal outwardly. v

8? The improvement in the art of forging steel car wheels and the like, consisting in forginga heated blank to develop the hub portion ofthe wheel, and while confining it in the for ing dies, so forging the rim portion as to orma flange along the lower edge of the wheel as confined within the dies, and then separating the matrix die to permit the vi ithdrawal of the wheel. 9. .The improvement in the art of forging steel car wheels and the like, consisting in die forging a heated blank to develop the hub thereof, and. while confining it within the dies forcing a loose mandrel practically through the hub cavity to develop the axle eye, and delivering the mandrel from the blank after passing entirely through the same.

In testimony whereof, I the said J OHN M. HANsnN have hereunto set my hand.

JOHN M. HANSEN.

J. F. WILL.

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