US1213878A - Forging-die. - Google Patents

Forging-die. Download PDF

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Publication number
US1213878A
US1213878A US9679316A US9679316A US1213878A US 1213878 A US1213878 A US 1213878A US 9679316 A US9679316 A US 9679316A US 9679316 A US9679316 A US 9679316A US 1213878 A US1213878 A US 1213878A
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Prior art keywords
forging
die
metal
surplus
cavity
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Expired - Lifetime
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US9679316A
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George T Jacocks
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2615—Edge treatment of cans or tins

Definitions

  • ⁇ vention being the provision of a punch oi male member which fits tightly into the cavity of the female member and acts upon the material to be forged, the male niembei' be- .ing provided with one or more surplus metal. receiving grooves in the face thereof so that the forged piece may be made accurately to the dimensions of the die cavity, one face thereof being completed entirely, while the opposite face is provided with one or more surplus metal projections which are removed by a planer or other machine.
  • a further object of this invention is the provision of a die of this character which can be operated by unskilled labor to produce an accurate forging that is not fractured, due to the compression placed thereupon when a surplus amount of metal is placed in the die cavity.
  • z- Figure 1 is a sectional view through the die members, showing the forging in place and the parts in forming position.
  • Fig. 2 is a sectional view through thelower end of the male die member.
  • Fig. 3 is a bottom plan view thereof.
  • Fig. 4 is a plan view of the upper face of a forging with the surplus metal removed.
  • th-e numeral 5 designates the female die constructed as is usual wi h a knock out, and having the forging receiving cavity 6, for the forging 7.
  • the male punch S is here shown composed of the outer member 13, the intermediate member 14C, and the inner or center member 15, all of which are telescoped, and are adapted to be operated independently,
  • the metal engaging end 11 of the member 141 is rounded, and is crescent shape to form the crescent shape time train holding depression or groove in the forging 7.
  • the cavity 6 is filled to the proper depth with the metal either colder semi-molten for the forging 7.
  • the member 15 is then moved down to its proper seat t0 prevent the metal from flashing circumferentially, being next followed by the member 14k, and finally by the outer member 13.
  • the surplus metal is crowded into the two grooves 9 and 10, and the forging is formed without crystallization, and not as is the case in the usual method of making forged articles by striking and crowding or compressing the metal under unnatural strains.
  • rlChe herein described forging die, including' a female die-having a forging receiving cavity, and a male die fitting snugly in the cavity to prevent flashing from the circumferential edge of the male die, said male die having a groove, or grooves, formed upon the forging engaging face thereof for receiving the surplus metalof the forging that is to be removed to form a finished forging, and a movable forging engaging vmember' carried by the male die and forming a part thereof, said movable forging engaging member acting to spread the metal in the cavity and cause the surplus to enter the groove or grooves.

Description

G. T. JACOCKS.
FORGING DIE.
APPLICATION FILED MAY Il. |916. Lmmw, Patented Jan.30,1917.
/4 f a Y -9 /a d.
620906Z.' Jmmwf GEORGE T. JACOCKS, OF POTTS'IOWN, PENNSYLVANIA.
FORGINGr-DIE.
Application filed May 11, 1916.
`vention being the provision of a punch oi male member which fits tightly into the cavity of the female member and acts upon the material to be forged, the male niembei' be- .ing provided with one or more surplus metal. receiving grooves in the face thereof so that the forged piece may be made accurately to the dimensions of the die cavity, one face thereof being completed entirely, while the opposite face is provided with one or more surplus metal projections which are removed by a planer or other machine.
A further object of this invention is the provision of a die of this character which can be operated by unskilled labor to produce an accurate forging that is not fractured, due to the compression placed thereupon when a surplus amount of metal is placed in the die cavity.
In the accompanying drawings z-Figure 1 is a sectional view through the die members, showing the forging in place and the parts in forming position. Fig. 2 is a sectional view through thelower end of the male die member. Fig. 3 is a bottom plan view thereof. Fig. 4 is a plan view of the upper face of a forging with the surplus metal removed.
Referring to the drawings, th-e numeral 5 designates the female die constructed as is usual wi h a knock out, and having the forging receiving cavity 6, for the forging 7.
The present forging shown clearly in plan in Fig. 4l, and which is the time train carrying member of a brass time fuse, is merely.
indicative of any form vof forgingthat may be made with a die employing the principles of the present invention.
The male punch S, is here shown composed of the outer member 13, the intermediate member 14C, and the inner or center member 15, all of which are telescoped, and are adapted to be operated independently,
Specification of Letters Patent.
Patented dan.. 341, 1917.,
serial No. 96,793.
member 13 upon its inner edge is provided with the shallower flash pocket or groove 10. The metal engaging end 11 of the member 141 is rounded, and is crescent shape to form the crescent shape time train holding depression or groove in the forging 7.
In operation, the cavity 6 is filled to the proper depth with the metal either colder semi-molten for the forging 7. The member 15 is then moved down to its proper seat t0 prevent the metal from flashing circumferentially, being next followed by the member 14k, and finally by the outer member 13. Thus the surplus metal is crowded into the two grooves 9 and 10, and the forging is formed without crystallization, and not as is the case in the usual method of making forged articles by striking and crowding or compressing the metal under unnatural strains.
W ith this construction of forging die, the various objections to the dies now in use are removed, and a more perfect forging is the result, in that metal parts are made to a size of very close dimensions and without pouring the exact amount of metal in the female die, the surplus metal which is received upon the male die side thereof being shaved off in a lathe or metal planer.
l/Vhat I claim as new is rlChe herein described forging die, including' a female die-having a forging receiving cavity, and a male die fitting snugly in the cavity to prevent flashing from the circumferential edge of the male die, said male die having a groove, or grooves, formed upon the forging engaging face thereof for receiving the surplus metalof the forging that is to be removed to form a finished forging, and a movable forging engaging vmember' carried by the male die and forming a part thereof, said movable forging engaging member acting to spread the metal in the cavity and cause the surplus to enter the groove or grooves.
In testimony whereof I affix my signature.
GEURGE T. JACOCKS.
tentes o! this patent may be obtained tor five cents each, by addressing the Commissioner or Patent-s,
Washington,
US9679316A 1916-05-11 1916-05-11 Forging-die. Expired - Lifetime US1213878A (en)

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US9679316A US1213878A (en) 1916-05-11 1916-05-11 Forging-die.

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US9679316A US1213878A (en) 1916-05-11 1916-05-11 Forging-die.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422236A (en) * 1981-10-01 1983-12-27 General Electric Company Method of extruding parts with captured fixture
US4720899A (en) * 1985-06-25 1988-01-26 Kabushiki Kaisha Komatsu Seisakusho Method of manufacturing scroll members for use in a rotary compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422236A (en) * 1981-10-01 1983-12-27 General Electric Company Method of extruding parts with captured fixture
US4720899A (en) * 1985-06-25 1988-01-26 Kabushiki Kaisha Komatsu Seisakusho Method of manufacturing scroll members for use in a rotary compressor

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