US939702A - Method for forming sheet-metal bodies. - Google Patents

Method for forming sheet-metal bodies. Download PDF

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Publication number
US939702A
US939702A US47466509A US1909474665A US939702A US 939702 A US939702 A US 939702A US 47466509 A US47466509 A US 47466509A US 1909474665 A US1909474665 A US 1909474665A US 939702 A US939702 A US 939702A
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United States
Prior art keywords
mold
sheet metal
metal bodies
blank
forming sheet
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Expired - Lifetime
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US47466509A
Inventor
Isaac Newton Jones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JOHN C VANDENBROEK
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JOHN C VANDENBROEK
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Application filed by JOHN C VANDENBROEK filed Critical JOHN C VANDENBROEK
Priority to US47466509A priority Critical patent/US939702A/en
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Publication of US939702A publication Critical patent/US939702A/en
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Classifications

    • 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/715—Method of making can bodies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure
    • Y10T29/49806—Explosively shaping

Definitions

  • the method consists in subjecting a sheet metal blank to the pressure of a high explosive, and while said blank is contained in the mold, so as topress the sheet metalto the shape of the mold.
  • Figure 1 is a sectional side elevation of a sheet metal blank held in a mold, the section being on the line 11 of F ig. 3;
  • Fig. 2 is a sectional plan view of the same'on the line 2-2 of Fig. 1; and
  • Fig.'3' is a sectional side elevation of the sheet metal body formed in the mold.
  • the mold A is made in sections, and is provided with an interior bilge-shaped opening B, and in the said opening is set a cylindrical sheet metal blank C, within which is ignited a quantity of dynamite or other explosive, so that the sheet metal is expanded to conform to the wall of the bilgeshaped opening B, as plainly indicated in Fig. 1, thus forming a bilge-shaped body C for a barrel or a like receptacle.
  • the body C can be readily removed from the mold on opening the latter.
  • the bilge-shaped body C may be produced gradually, that is, the sheet metal blank may be subjected successively to the pressure of high explosives in graduated molds until the sheet metal blank is expanded to the'full extent in the last mold. By proceeding. in this manner rupture of the sheet metal is not liable to take place.
  • the mold may be closed at one or both ends during the firing of the charge, and the latter may be ignited by suitable means, preferably a fuse or an electric igniting device of any approved construction.
  • a heavy mold of metal is made use of, of a suflicient thickness to stand the strain to which it will be subjected, the mold being made in two halves so that it maybe opened for the removal of the article after the forming thereof.
  • the inside of the mold should be in the shape of a barrel or keg, that is of the article to be formed, and it may be provided with a solid bottom, or it may rest upon a heavy iron plate, and be fastened thereto in any suitable manner.
  • a sheet of metal of suflicient size to form the body of the article is rolled into shape so that it will set in the mold, ermitting the ends of the sheet to lap sufiibiently to permit them to be riveted or brazed after the operation is completed, or secured in any other suitable manner.
  • the sheet is then placed in the mold resting upon the bottom thereof.
  • a sufficient quantity of the explosive is suspended therein at approximately the center of the article, after which a lid or cover of very heavy metal is placed on top of the mold, which need not be fastened, but should be secured to the mold by a chain or the like to prevent its being thrown any distance from the mold. After the cover is placed, the explosive is set off by any suitable means, and the force of the explosion acts directly on the sheet of metal.

Description

I. N. J ONES.
METHOD FOR FORMING SHEET METAL BODIES. 7
APPLICATION FILED 3111.28, 1909.
Patented Nov. 9, 1909.
ATTORME rs UNITED STATES \PATENT OFFICE.
ISAAC NEWTON JONES, or DEFIANCE, OHIO, ASSIGNOR T0 JOHN c. VANDENBROEK, OF DEFIANGE, OHIO.
METHOD FOR FORMING SHEET-METAL BODIES.
, nomical manner and without danger of rupturing the sheet metal, and permitting the formation of re ular shaped sheet metal bodies without Elie use of expensive machinery.
The method consists in subjecting a sheet metal blank to the pressure of a high explosive, and while said blank is contained in the mold, so as topress the sheet metalto the shape of the mold.
In order to carry out this method, I proceed in detail as follows, reference being had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate correspond ing parts in all the views.
Figure 1 is a sectional side elevation of a sheet metal blank held in a mold, the section being on the line 11 of F ig. 3; Fig. 2 is a sectional plan view of the same'on the line 2-2 of Fig. 1; and Fig.'3'is a sectional side elevation of the sheet metal body formed in the mold.
As shown in the drawings, the mold A is made in sections, and is provided with an interior bilge-shaped opening B, and in the said opening is set a cylindrical sheet metal blank C, within which is ignited a quantity of dynamite or other explosive, so that the sheet metal is expanded to conform to the wall of the bilgeshaped opening B, as plainly indicated in Fig. 1, thus forming a bilge-shaped body C for a barrel or a like receptacle. The body C can be readily removed from the mold on opening the latter.
Although I have shown and described the mold with a bilge-sha ed opening, it is evident that molds of di erent shape for forming difierentsheet metal bodies can be employed, it being understood that with the method above set forth the sheet metal is subjected to the pressure of a high explosive, to cause the sheet metal to expand to the form of the mold.
Specification of Letters Patent.
Patented Nov. 9, 1909.
Application filed. January 28, 1909. Serial No. 474,665.
The bilge-shaped body C may be produced gradually, that is, the sheet metal blank may be subjected successively to the pressure of high explosives in graduated molds until the sheet metal blank is expanded to the'full extent in the last mold. By proceeding. in this manner rupture of the sheet metal is not liable to take place.
The mold may be closed at one or both ends during the firing of the charge, and the latter may be ignited by suitable means, preferably a fuse or an electric igniting device of any approved construction.
In carrying out the process set forth, a heavy mold of metal is made use of, of a suflicient thickness to stand the strain to which it will be subjected, the mold being made in two halves so that it maybe opened for the removal of the article after the forming thereof. The inside of the mold should be in the shape of a barrel or keg, that is of the article to be formed, and it may be provided with a solid bottom, or it may rest upon a heavy iron plate, and be fastened thereto in any suitable manner.
A sheet of metal of suflicient size to form the body of the article is rolled into shape so that it will set in the mold, ermitting the ends of the sheet to lap sufiibiently to permit them to be riveted or brazed after the operation is completed, or secured in any other suitable manner. The sheet is then placed in the mold resting upon the bottom thereof. A sufficient quantity of the explosive is suspended therein at approximately the center of the article, after which a lid or cover of very heavy metal is placed on top of the mold, which need not be fastened, but should be secured to the mold by a chain or the like to prevent its being thrown any distance from the mold. After the cover is placed, the explosive is set off by any suitable means, and the force of the explosion acts directly on the sheet of metal.
Having thus described my invention, I claimas new and desire to secure by Letters Patent:
1. The herein described method of forming sheet metal bodies, consisting in inserting in a mold a cylindrical blank, support ing an explosive at approximately the center of the mold, closing the ends thereof, and igniting the explosive whereby to expand the blank into-contact with the inner surface of the mold.
2. The herein described methodfor forming sheet metal bodies, consistln 1n lacm a cylindrical blank into a bilge s ape mol closing the ends thereof, supporting an explosive at approximately the center of the blank and igniting the same.
3. The herein described method for forming hollow sheet metal bodies, which consists explosive therein at substantially the center thereof, and exploding the same whereby to forcibly press every intimate contact wit the internal surface of the mold. In testimony whereof I have signed my name to this'specification in the presence of two subscribin witnesses.
I AAO NEWTON JONES. 'Witnesses: V
HOLGATE G. HARLEY, JOHN G. VANDENBBOEK.
art of the blank mto -15
US47466509A 1909-01-28 1909-01-28 Method for forming sheet-metal bodies. Expired - Lifetime US939702A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779279A (en) * 1952-03-08 1957-01-29 Paul S Maiwurm Apparatus for securing a tube or tubes in a body member
US2935038A (en) * 1955-08-26 1960-05-03 Anheuser Busch Apparatus for metal forming using explosive pressures
US2983242A (en) * 1961-05-09 Explosive forming in liquid
US3025596A (en) * 1959-06-26 1962-03-20 Combustion Eng Braze bonding of concentric tubes and shells and the like
US3036373A (en) * 1959-03-31 1962-05-29 Olin Mathieson Metal forming
US3044430A (en) * 1957-10-28 1962-07-17 Frank E Zeigler Shock wave metal forming method and apparatus
US3045339A (en) * 1958-06-02 1962-07-24 Olin Mathieson Metal forming by explosive force through a solid gel
US3050850A (en) * 1958-08-18 1962-08-28 Nordberg Manufacturing Co Method of truing manganese castings
US3065720A (en) * 1957-10-08 1962-11-27 Lockheed Aircraft Corp Apparatus and method for high velocity forming of metals using high explosives
US3096576A (en) * 1963-07-09 parilla
US3120259A (en) * 1961-05-15 1964-02-04 Ryan Aeronautical Co High energy tube forming means
US3131661A (en) * 1960-04-20 1964-05-05 Smith Corp A O Explosive forming of articles
US3236080A (en) * 1961-07-10 1966-02-22 Continental Can Co Procedure and device for the shaping of containers, container bodies or container parts, from a thin-walled first shape
US3252312A (en) * 1962-04-25 1966-05-24 Continental Can Co Method and apparatus for explosive reshaping of hollow ductile objects
US3364708A (en) * 1956-01-12 1968-01-23 Rohr Corp Electrical discharge method of and apparatus for generating shock waves in water
US3958437A (en) * 1975-01-24 1976-05-25 Seew Barorian Process for manufacturing metal poles

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096576A (en) * 1963-07-09 parilla
US2983242A (en) * 1961-05-09 Explosive forming in liquid
US2779279A (en) * 1952-03-08 1957-01-29 Paul S Maiwurm Apparatus for securing a tube or tubes in a body member
US2935038A (en) * 1955-08-26 1960-05-03 Anheuser Busch Apparatus for metal forming using explosive pressures
US3364708A (en) * 1956-01-12 1968-01-23 Rohr Corp Electrical discharge method of and apparatus for generating shock waves in water
US3065720A (en) * 1957-10-08 1962-11-27 Lockheed Aircraft Corp Apparatus and method for high velocity forming of metals using high explosives
US3044430A (en) * 1957-10-28 1962-07-17 Frank E Zeigler Shock wave metal forming method and apparatus
US3045339A (en) * 1958-06-02 1962-07-24 Olin Mathieson Metal forming by explosive force through a solid gel
US3050850A (en) * 1958-08-18 1962-08-28 Nordberg Manufacturing Co Method of truing manganese castings
US3036373A (en) * 1959-03-31 1962-05-29 Olin Mathieson Metal forming
US3025596A (en) * 1959-06-26 1962-03-20 Combustion Eng Braze bonding of concentric tubes and shells and the like
US3131661A (en) * 1960-04-20 1964-05-05 Smith Corp A O Explosive forming of articles
US3120259A (en) * 1961-05-15 1964-02-04 Ryan Aeronautical Co High energy tube forming means
US3236080A (en) * 1961-07-10 1966-02-22 Continental Can Co Procedure and device for the shaping of containers, container bodies or container parts, from a thin-walled first shape
US3252312A (en) * 1962-04-25 1966-05-24 Continental Can Co Method and apparatus for explosive reshaping of hollow ductile objects
US3958437A (en) * 1975-01-24 1976-05-25 Seew Barorian Process for manufacturing metal poles

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