US1244741A - Forging-machine. - Google Patents

Description

w. s. JOHNSON.

FURGING MACHINE. 7 APPLICATION FILED SEPT-2!. 1915.

Patented Oct. 30,1917.

4 SHEETSSHEET 1.

W. S. JOHNSON.

FORGING MACHINE.

APPLICATION FILEDSEPT-ZI. 1915 Patented Oct. 30, 1917. 4 SHEETS-SHEET 3.

. UH c X ,w. s. JOHNSON.

FORGING MACHINE.

v APPLICATIONHLED SEPT-21,1915.

1,244,741. Patented 0430,1917.

'4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

WILLIAM 'S. JOHNSON, OF BERWICK, PENNSYLVANIA, ASSIGNOILTO AMERICAN CAR AND FOUNDRY COMPANY, OF ST. LOUIS, MISSOURI, A GORPOBATION OF NEW JERSEY.

FOBGING-IMACHINE.

Specification of Letters Patent.

Patented Oct. 30, 1917.

Application filed September 21, 1915. Serial No. 51,905.

To all whom it may concern:

Be it known that I, WILLIAM S. J OHNSON,

3 residing at Berwick, Columbia county, Pennsylvania, and being a citizen of the United States, have invented certain new anduse ful Improvements in Forging-Machines, of whlch the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and to use the same, reference being had to the accompanying drawings, which illustrate the preferred form of the inventlon, though it 1s to be understood that the 1I1V6I11310I1 is not limited to the exact details of construction shown and described, as it is obvious that various modifications thereof Wlll occur to persons skilled in the art.

In said drawings:.

Figure 1 is an elevation showing myimproved machine for forging, certain parts being broken away for added clearness; a

Fig. 2 1s a horizontal section above that portion of the assembly which is mounted upon the lower table being principally shown in plan;

Fig. .3 is a horizontal section taken along the same plane but looking upwardly showmg the rotatable annulus, the piercers carried thereby, and the other associated parts in inverted plan' view;

F1g. 4 1s a vertical section through the.

upper platen, the rotatable annulus carried treating relation;

Fig. 5 1s a fragmentary sectional view show-mg a modified form of stripper and stripper collar;

7 Fig. 6 is a perspectiveview of the portablebathcontalner; and

F1g. 7 is a perspective view of the stripper illustrated in Fig. 4.

The invention relates to new and useful 7 improvements in apparatus for forming steel tubing, preferably closed at one end and open at the opposite end.

In the drawings, the lnvention is shown 50,. as used at the present time in the manufacture of metal articles of relatively short length, though it is to be understood that tubing of greater length maybe manufactured by thesame apparatus and process.

'Referring to the drawings: 1 indicates the stationary press table; 2 the movable press table; 3 a platen which is secured by means of the clamps 1 to the stationary press table; 5 indicates a stationary guide collar which is secured by means of the vertically extending bolts 6 to the platen 3.

Secured by outstanding flanges 7 to the stationary'guiding collar 5, is a rotatable piercer carrying annulus 8, which for convenience of rotation, is mounted upon ball bearings 9 interposed between the rotatable annulus and said guiding collar.

At intervals, the rotatable annulus 8 is provided with suitable orifices into which are inserted piercer-carrying members 10 which are screw threaded at their open lower sides and received in the screw threaded portions are removable piercers 11 held in position by the screw threads 12, a number k of the piercers 116 in the present instancebeing carried by the rotatable annulus before referred to. l

The platen 3 is provided with a central hub portion 13 pierced to receive therein the guiding pin 14, the purpose of which will be hereinafter explained.

The piercer carriers 10 are provided at their upper portions with outstanding shoulders 10, which fit correspondingly shouldered recesses in the rotatable piercer carrying annulus 8.; the members 10 being formed of sufficient diameter to provide a drive fit which secures themembers 10 in position. Entering the guiding collar 5 at a convenient point with relation to the die hereinafter referred to, is a locking pin 15 held under the influence of thespri ng 16 normally in engagement with the rotatable piercer carrying annulus, which latter is provided at convenient intervals with recesses 16' corresponding in number with the number of piercers so that the locking pin may enter said recesses, holding the piercers against rotation during vertical movement of the parts of the assembly cooperating therewith.

As shown i the drawings, the guiding pin 14 is in register with the pin seat 16" formed in the stationary die-block 17".

Said die-block is also provided with a recess 18 of convenient shape and cross seetion, being circular as shown on the drawing, which recess is seated the die 19" the stripper collar The object of this stripper is to hold the material operated upon during the extraction of the piercers 11, and the guiding pin 14 is seated inthe pin-seat 16 so as to guide the piercers 11 and hold them in proper position so that when the locking pin 15 engages one of the notches 16', piercer 11 will be centered over the bar or section of a billet held in the die 19 to be pierced when said piercer and die 19 are relatively moved together. i

As the metal 23 has a tendency to expand laterally during the piercing operation and fill the die cavity means must be provided for lifting the metal operated upon after the piercer has. performed its function, and this is accomplished by means of the kicking-out pin before referred to cooperating with the stirrup 30 to which are connected a pair of chains 31 and 31 the upper ends of which chains are connected at suitable times to the hooks 32, while the tables 1 and 2 are near together, and when the table 2 descends, the chains 31 and 3P will lift the stirrup 30 and'as said stirrup.30 bears upon the lower end of the pin 21, the pin with its head 22 will be held stationary during descent of the table 2 thereby lifting the work 23 out of the die 19, it being understood of course that the stripper 24: has beenpreviously withdrawn;

Any suitable means to lock the piercer carrying annulus may be employed, as for example, bar 15 may be proJected through the pendant perforated lugs 16" and into suitable registering openings in the hub portion 13, it being understood that the hub portion is stationary.

As the metal to be operated upon is very hot, means must be provided for-cooling the piercers after performing their function, and as water is not suitable for this purpose, a jacketed oil bath is provided as shown in the drawings, in which 40 indicates an outer-shell between which and the shell 41 there is provided a water-oontaining space which is fed through the pipe 42. The water overflows at the topthrough the pipe 43. Between the Wall 41 and the wall 45, there'is provided an oil bath. segmental in form into which one be made rotatable whlle the piercer carrying stationary is a portable receptacle 17 shown in the drawings as provided with an elongated handle 48, the receptaclebeing of sufiicient diameter and length to contain a considerable quantity of oil and permit it to be elevated to inclose practically all of one of the piercers 11. This portable bath 47 is important in that it prolongs the life of the piercers due to the fact that as soon as the last used and hottest piercer is withdrawn from the heated billet, the operator dips the receptacle 47 into the oil bath 4:6 filling it to the right point and at once raises the portable bath to inclose the hottest of the piercers before indicated there by tempering said piercers from time to time during the operation of the machine and I greatly prolonging the life of the piercers. During the operation of the machine in piercing the metal, the die 19 and its base 20 will become very hot. Likewise, the. interior of the die may be more or less coated with scale from the hot metal inserted therein, hence the kicking-out pin with its head 22 is made removable so that a stream of suitable vapor, as for example, steam, may be forced into the ,interior of the die and clean it" out, after which the pin. may be droppedinto position and the operation resumed.

If the piercers were not promptly cooled and tempered in the oil bath before referred to, they would soon cease to be usable due to the heat of the metal operated upon and while various means have been tried to cool the piercers, the oil baths have been found 5 to be the most effective,

In the manufacture of certain products from steel, of which large quantities are now being produced, it has heretofore been the practice to do the forging and afterward draw out the forged product to form a thinner and longer article, but with the method hereinbefore described in connection with the apparatus illustrated in the accompanying drawings, it has ,been found that the forging process is suflicient and with the parts properly proportioned, an article possessing maximum tensile strength has been produced due in'part to the elimination ofthe drawing-out process and to the "condition of the tools performing the work. a

It is obvious that various tools may be employed, modifications of the device herein shown and described within the present invention, as for example, the die-block may member may be held in fixed position, but an essential feature of the invention is that the piercers be carried into alinement with the dies, preferably one at a time, perform the piercers are being withdrawn from the dies, or the dies withdrawn from the piercers, as may be most convenient.

For convenlence of operatlon, 1t 1s desirable that the piercers and the piercer carrying means he held stationary with reference to vertical movement, and be rotatable while thedie-block and its carried die or dies are held stationary on a vertically movable table or platform forming part of a hydraulic press, which press is shown in the drawing only in so far as is necessary to illustrate the operation of the invention. What I claim is: O a 1. In combination in a piercing machine,

a die supporting member, a female die therein, a stripper-holder overlappingsaid female die and locking said die in position in its holder, a fixed platen, a rotatable piercerholder supported thereby, a plurality of piercers carried by said piercer-holder, and

a guide pin entering said die-supporting member.

2. In combination in a device of the character described, a female die and a dieholder, a guide pin adapted to be seated in said die-holder, a piercer-carrying-member rotatable about said uide pin and relatively to said female die an a plurality of piercers carried by said member, each of said piercers being at times adapted to register with said female die.

3. In combination in a forging machine, a die block, a female die therein, a guide pin adapted to be socketed in said die block, a platen supportin said guide pin, a piercersupporting mem' er rotatable about said guide pin and a plurality of piercers held in said piercer-supporting member, each of which is at times adapted to penetrate material in said female die.

4:. In combination in a forging machine, a die block, a die therein, a guiding pin adapted to extend into said die block, a platen supporting said guiding pin, a rotatable piercer-carrying member supported by said platen and rotatable about said pin, and a plurality of piercers, each adapted in turn to penetrate metal held in said die, all car ried by said piercer-carrying member. L

5. In combination in a piercing machine, a die supporting member, a female die therein, a stripper-holder" overlapping said feed to register with said female die.

male die, a rotatable piercer-holder, supporting means therefor, a plurality of piercers carried thereby, and a ide pin held by saidsupporting means an adapted to enter said die-supporting member.

6. In combination in a device of the character described, an upper platen, a lower platen, a female .die and a die-holder held on said lower platen, a guide pin held by said upper platen and adapted to be seated in said die-holder, a piercercarrying annulus supported by the upper platen and rotatable with relation to said female die, and a plurality of piercers carried by said an-- nulus,each of which is adapted to regis ter with said female die.

7. In combination in a forging machine, an upper supporting member, a die block, a female die therein, a guide pin socketed in said upper supporting member and adapted to enter said die block, a piercer-supporting member rotatable about said guide pin and a plurality of piercers held in said piercer-supporting member, each of which is at times adapted to penetrate material in said female die.

8. In combination in a forging machine, a vertically movable die block, a die therein, a relatively fixed guiding pin extendingvinto said die block, a platen. carrying said guidin'g pin, a rotatable piercer-carrying annulus supported by said platen and a plurahty of piercers, each adapted in turn to'pene trate metal held in said die, all carried by said piercer-carrying annulus.

9. In combination in a piercing machine, a die-supporting member, a female die therein, a stripper-holder overlapping said female die, a rotatable piercer-holder, a pluralityof piercers carried thereby, a pin support, a guide pin supported thereby and idapted to enter said die-supporting memer.

10. In combination in a device of;the character described, an upper and a lower platen, ried by the lower platen, a guide pin car ried by the upper platen and adapted to be at times seated in said die-holder, a piercercarrying annulus carried by the upper platen and rotatable With relation to said female die and a plurality of piercers car ried bysaid annulus, each of which is adapt- 11. In combination in a forging machine, a die block, a female die therein, a guide pin adapted to be socketed in said die block, a piercer-supporting member-rotatable about said die pin, a support for said pin and a female die and a die-holder car 7 said member, and a plurality of piercers held in said piercersupporting member, each of which is at times adapted to penetrate material in said female die.

12. In combination in a forging machine,

a die block, a die therein, a guiding pin*13c adapted to extend into said die block, a platen supporting said guiding pin, a rotatable piercer-carrying annulus supported by said platen and a plurality of piercers, each, adapted to turn to enetrate metal held in said die, all carried y said piercer-carrying annulus. v

13. In combination in a'fo-rging machine, male dies, a carrier therefor adapted to move the same in a circular path, a diesocket member, atubular die held thereby opposite a location on the male die circular path, a separate die block positioned so as to substantially close one end of the passage through said tubular die, means of support for said die block, said male dies each being adapted to be moved into and out of alinement with said tubular die and means for moving the dies together when alined.

14:. In combination in a forging machine, male dies, a carrier therefor adapted to move the same in a circuit, a die socket member, a tubular. die held thereby opposite a given location on the male die circuit, a separate die block adapted to shape an end of the work, a support for said die block, said carrier being adapted to move each male die into and out of alinement with said tubular die, means for moving the dies together when alined and'telescoping means for preserving the die-alinement.

15. In combination in a forging machine, a pair of die holding members, a female die in one member and a plurality of maladies carried by the other member, the latter member bein rotatably mounted eccentrically of said emale die and adapted to carry said male dies into alinement with saidfemale die, means for forcing said die-holding members together when one of said male dies and the female die are alined, and guiding means for preserving the alinement of said dies.

16. In combination in a forging machine, a die-socket member, a tubular die carried thereby, a plurality of male piercers, a rotatable support therefor, a work-ejecting device and means for sorelatively moving. said socket member and piercer-support that one of said piercers penetrates work in said tubular die, relative movement of the socket member and piercer-support being also adapted to cause a portion of said ejecting device to travel through said die to drive the work toward an open end thereof.

- 17. In combination in a forging machine, dies of different types adapted to cooperate to form and pierce work, a member carrying one type of said dies and another member carrying a diflerent type thereof, means by which dies of the opposite types are brought from irrelative positions into alinement with each other, said dies being adapted to be brought into cooperative work treating relation, one of said die-carrying ating means adapted to relatively move said socket member and piercer-carrier to cause said piercer to pass through said stripper member and stripper and into work-treat-- ing relation with said die, said actuating means also being adapted to effect the withdrawal of said piercer, and said stripper member and stripper being adapted to cooperate to strip work from said piercer during such withdrawal.

19. In combination in a forging machine, a female die positioned to cooperate with a male die, a plurality of male dies, a dieholder therefor comprising a non-rotatable member having a bearing, a male die-carrier rotatable about and unsupported by said bearing, a supporting retainer for said carrier maintained in fixed relationwith said member, and means by which said carrier may be rotated to bring each of said male dies into alinement with the cooperative female die position, and means for moving alined dies into work-treating relation.

20. In combination in a forging machine,

a female die positioned to cooperate with a.

male die, a die-holder comprising a mainsupporting member, annuli one of which is in fixed relation to said member and another .of which is rotatable and supported by the first mentioned annulus, 'a plurality of'male dies carried by said rotatable annulus, means by which said rotatable annulus may be revolved to bring each of saidmale dies into alinement with the cooperative female die position, and means for moving alined dies into Work-treating relation.

21.. In combination in a forging machine,

a female die positioned to cooperate with a male die, a die-holder comprising a main member, annuli one of which is supported by said main member and another of which is rotatably mounted on the first mentioned annulus, removable die-socket members carried by said rotatable annulus, male dies held by said socket members, means by which the last mentioned annulus may be a female die positioned to cooperate with a male die, a die-holder comprising a base-like member, an annulus secured thereto, a rotatable annulus confined between the same and said base-like member, die socket members seated in said rotatable annulus and retained in place by the latter and said base-like member and otherwise freely movable, male 2 dies'carried by said socket members, means for revolving said rotatable annulus to bring each of said male dies into alinement with the cooperative female die position, and

means for moving alined dies into work- 5 treating relation.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

WILLIAM S. JOHNSON. Witnesses:

J OHN W. SHEFFER, K. R. Kns'rnn.

It is hereby certified that in Lott-era Patent No. 1,244,741, granted October 30, 1917, upon the applicetion of Willisim S. Johnson, of Bel-wick, Penhsylvaniafior an improvement Forging-Machines," an error appears in the printed specification requiring oorrection as follows: Page 3, line 124, clajm 11, {or the word "die read m,- and that the said Letters Patent should b'o read wit]; this correction therein that the same may conform to the record of tho case in the Patent Ofioe.

Signed and sealed this 29th day of January, 4. D., 1918.

B. F. WHITEHEAD,

Acting Commissioner of Patents.

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