US3829940A - Shell with spherical-shaped projectiles, method for the fabrication thereof, and apparatus for the performance - Google Patents

Shell with spherical-shaped projectiles, method for the fabrication thereof, and apparatus for the performance Download PDF

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Publication number
US3829940A
US3829940A US00267528A US26752872A US3829940A US 3829940 A US3829940 A US 3829940A US 00267528 A US00267528 A US 00267528A US 26752872 A US26752872 A US 26752872A US 3829940 A US3829940 A US 3829940A
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US
United States
Prior art keywords
explosive charge
projectiles
charge container
sleeve
shell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00267528A
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English (en)
Inventor
P Fischer
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of US3829940A publication Critical patent/US3829940A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
    • F42B12/22—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction
    • F42B12/32—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type with fragmentation-hull construction the hull or case comprising a plurality of discrete bodies, e.g. steel balls, embedded therein or disposed around the explosive charge

Definitions

  • ABSTRACT The method for producing such shell contemplates 3 Claims, 8 Drawing Figures P'A'TENFEDmseo-mu I i 3329.94
  • PATENTEDAUE 20 I974 SHEET 2 0f 4 23 Fig.4 24
  • the present invention relates to a new and improved shell with spherical-shaped projectiles comprising a thin-walled cylindrical sleeve and an explosive charge container arranged coaxially therein, between which sleeve and container there are arranged the equal size projectiles, these projectiles bearing against both the sleeve and the explosive charge container.
  • this invention is also concerned with a new and improved method for the fabrication of the shell with spherical-shaped projectiles, wherein the explosive charge container is introduced into the sleeve and the projectiles are filled between the explosive charge container and the sleeve.
  • a further object of the invention is to provide a shell which is simpler and less expensive to fabricate.
  • the inventive method is generally manifested by the features that following the introduction of the projectiles a pressure is produced internally of the explosive charge container, to thereby form bulging portions which radially project between the projectiles, and which bulging portions secure the projectiles against any displacement.
  • a further aspect of the invention relates to apparatus for the performance of the aforementioned method which incorporates a tool for the explosive charge container and a holder for receiving the sleeve member.
  • This apparatus is manifested by the features that there is provided pressure-producing mechanism for generating a pressure internally of the explosive charge container.
  • FIG. I is a longitudinal sectional view through an embodiment of shell fabricated according to the invention.
  • FIG. 2 is a fragmentary sectional view of the shell depicted in FIG. 1, taken substantially along the line II-II thereof;
  • FIG. 3 is a first embodiment of a tool for an apparatus for fabricating the shell equipped with spherical-shaped projectiles
  • FIGS. 4 to 6 illustrate the apparatus depicted in FIG. 3 for different working phases thereof.
  • FIGS. 7 and 8 illustrate further embodiments of a tool and apparatus for the performance of the inventive method.
  • FIG. 1 such embodies a ring member 1, the front portion of which is reduced in diameter and possesses a shoulder 2.
  • a ring member 1 At the rear portion of the ring member 1 there is provided internal threading 3 and a bore step portion 4.
  • This ring member 1 is inserted into the rear end of a sleeve member 5 fabricated of steel and is conveniently fixedly connected therewith.
  • the outside diameter of the sleeve member 5 and the rear portion of the ring member 1 are the same size.
  • a further ring member 6 is introduced into the front portion of the sleeve member 5 and secured therein.
  • a thin-wall explosive charge container 7 formed of aluminium is centered at both ring members 1 and 6, the inner diameters of which are the same size.
  • the substantially cylindrical jacket-shaped compartment 8 bounded by the sleeve member 5, the explosive charge container 7 and the ring members 1 and 6 is completely filled with spherical-shaped projectiles 9 of the same size which form fragments. These projectiles 9 form a ring-shaped layer, the radial depth of which corresponds to the ball or sphere diameter of such projectiles.
  • the explosive charge container 7 is provided with bulged or bowed portions 10 which penetrate into the space between the projectiles 9, as best seen by referring to FIG. 2.
  • the projectiles 9 bear against such bulging or bulged portions 10 of the explosive charge container 7 and at the inner wall of the sleeve member 5.
  • a disk 11 is threaded from the rear into the ring member I up to the location of the bore shoulder or stepped portion 4 and closes the interior of the explosive charge container 7 towards the rear.
  • the explosive charge container 7 is filled with an explosive 12.
  • This explosive or explosive charge 12 penetrates into the bulging or bulged portions 10 of the explosive charge container 7 and thus adheres, also during the acceleration prevailing during firing of the shell with the spherical-shaped projectiles and during rotational acceleration thereof about its axis. at the explosive charge container wall.
  • end the explosive charge container 7 is firstly inserted into the sleeve member 5, secondly the projectiles 9 are filled into the compartment between the sleeve member 5 and the explosive charge container 7, and thirdly a pressure is produced internally of the explosive charge container 7 so that there are formed the bulged or bulging portions which penetrate radially between the projectiles 9 and which thus secure such projectiles against any type of displacement.
  • the explosive charge container 7 prior to its deformation, is filled with pressed or compacted parts 13 of explosive charge material. Thereafter, a pressure is exerted upon the pressed parts 13 which, in turn, produces the bulged portions 10 of the explosive charge container 7. By virtue of this pressure the pressed parts 13 are simultaneously compressed to the required density.
  • the equipment for carrying out the aforementioned method advantageously contains a pressure-generating mechanism or means for forming the pressure internally of the explosive charge container, a holder or support for housing the sleeve member and a tool for the explosive charge container.
  • a first embodiment of inventive apparatus for example as shown in FIG. 6, contains a press with two punches l4 and 15 between which there is clamped a tool 16 at its end faces or surfaces 17 and 18 and which tool 16 carries the explosive charge container 7. Furthermore, this embodiment of apparatus incorporates a tubular-shaped holder or support 19 equipped with a flange, this holder 19 being retained by any suitable and therefore schematically illustrated mechanism 20 in an upright position upon the table 21 of a vibrator.
  • the sleeve member 5 with the ring members 1 and 6 according to the embodiment of FIG. 1 is arranged and guided at the holder 19.
  • the ring member 1 is supported at its bottom upon a stepped bore portion or shoulder 22 of the holder 19.
  • a ring-shaped retaining screw 23 is threaded from the front into the holder 19 and bears against the upper end face 24 of the sleeve member 5. As a result the sleeve member 5 is held in contact with the ring member 1.
  • this embodiment of apparatus incorporates the tool 16 shown in greater detail in FIG. 3.
  • This tool consists of a piston 25 with a front portion 26 which is reduced or stepped in diameter and bounded by a shoulder 27.
  • the piston 25 possesses a continuous bore 28 which rearwardly of a shoulder 29 extending perpendicular to the lengthwise axis of the tool has a greater diameter than at the front thereof.
  • a rod 30 is guided at the front portion of the bore 28 and extends towards the front.
  • a second piston member 31 is threaded upon the front end of the rod 30.
  • the head of the piston 31 has a truncated-cone shape, the cone surface 32 being connected through the agency of rounded portions 33 both with the end face 18 extending transverse to the lengthwise axis and also with the cylindrical surface of the piston 31.
  • Ring members or rings 37 formed of a rubber elastic or elastomeric material are arranged between the oppositely situated end surfaces 35 and 36 of both pistons 25 and 31. These ring members 37 are seated with radial pre-stress upon the rod 30 and possess an external diameter which is only inconsequently smaller than that of the piston 31 and the front portion of the piston 25.
  • a thin disk or spacer 38 for instance formed of steel and slightly lubricated is inserted between each two ring members 37.
  • the ring members 37 bear against one another and the entire set or package of ring members 37 is retained in contact with the pistons 25 and 31 by means of a screw 39 which can be rotated at the rear end of the rod 30 and which bears via a ring or washer 40 at the bore shoulder 29.
  • An explosive charge container 7 is pushed over the tool 16 until its rear end face bears against the piston shoulder 27 and the rear portion of the piston 31 is guided in the explosive charge container 7.
  • the tool 16 and the explosive charge container 7 are thereafter inserted from below into the holder 19 until the explosive charge container 7 is guided at the front portion of the ring member 1.
  • Now projectiles 9 are filled from the top into the sleeve member 5 closed at its bottom by the piston 31 and the ring member 1, as best seen by referring to FIG. 4. Thereafter, the vibrator is placed into operation and the tool 16 with the explosive charge container 7 is moved slowly upwards.
  • the rings 37 are thus elastically compressed together in axial direction and radially expanded so that they exert radially directed forces upon the explosive charge container 7.
  • the slightly lubricated steel disks 38 arranged between the rings 37 ensure that the transverse elongation of the rings 37 is not hindered by frictional forces.
  • the explosive charge container 7 is pressed by these radial forces towards the outside against the projectiles 9 and into the spaces disposed therebetween.
  • the explosive charge container 7 is now secured against any displacement in axial, radial and tangential direction.
  • the tool 16 After relieving the load exerted by the compressive force and eliminating the axial and radial deformation of the rings 37 the tool 16 can be pulled-out of the shell jacket formed by the ring members 1 and 6, the sleeve member 5, the projectiles 9 and the explosive charge container 7. After threading out the retaining screw 39 the shell jacket is ejected out of the holder 19.
  • FIGS. 7 and 8 the same components have been designated with the same reference characters, whereas components which differ in shape in the embodiments in FIGS. 7 and 8 have applied thereto a further prime or double prime marking, and finally additional components have applied thereto a new reference character.
  • FIG. 7 a second embodiment of apparatus has been depicted in FIG. 7 and embodies a tool 16, wherein the elastically deformable rings 37 of FIGS. 3 to 6 are replaced by pressed or molded parts 13 formed of explosive charge material 12.
  • the pressed parts 13 are pushed onto a rod 30' connected with the piston 25.
  • a piston-3l is displaceably arranged upon the rod 30' in front of the pressed parts 13.
  • the holder 19' must bear with a relatively small tolerance against the sleeve member 5 in order to prevent damage thereof, since simultaneous with the deformation of the explosive charge container 7 the explosive charge material is compressed such that it has imparted thereto its optimum effectiveness. To this end there is necessary a greater compressive force than for the deformation of the explosive charge container.
  • the pressed parts 113 are plastically deformed, so that they exert radial forces upon the explosive charge container 7 which, in the manner already described, deform such and then adhere as the explosive charge at its inner wall.
  • a pressurized fluid medium e.g. oil is employed for deformation of the explosive charge container 7.
  • a piston is fixedly connected by a rod with a piston 31".
  • the closed cover 41 of the pis ton 25" possesses a bore 42, the lower end of which is connected to an oil conduit 43.
  • the front portion of the piston 25" and the piston 31" possess peripheral grooves 44 in which there are arranged sealing O-rings 45,46. If during the fabrication of a shell jacket the tool 16 with the explosive charge container 7 has assumed its uppermost position and remains stationary (FIG. 8), then pressurized oil 48 is delivered through the bore 42 from a pump 47 into the compartment bounded by the end faces 35", 36 of the pistons 25",
  • the explosive charge container 7 is deformed by the pressure exerted by the oil.
  • a method for fabricating a shell having a substantially thin-wall cylindrical sleeve, a substantially cylindrical explosive charge container arranged coaxially therein and substantially shperical-shaped projectiles located between said sleeve and said explosive charge container comprising the steps of inserting the explosive charge container into the sleeve so as to form a compartment between the sleeve and the explosive charge container while filling the projectiles into the compartment between the sleeve and the explosive charge container, generating a pressure internally of the explosive charge container so as to form bulged portions which penetrate between the projectiles and which bulged portions secure the projectiles against any type of displacement.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Toys (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
  • Press Drives And Press Lines (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
US00267528A 1971-07-08 1972-06-29 Shell with spherical-shaped projectiles, method for the fabrication thereof, and apparatus for the performance Expired - Lifetime US3829940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1002171A CH543064A (de) 1971-07-08 1971-07-08 Geschoss mit kugelförmigen, unter sich gleich grossen Projektilen, Verfahren zu dessen Herstellung und Vorrichtung zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
US3829940A true US3829940A (en) 1974-08-20

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US00267528A Expired - Lifetime US3829940A (en) 1971-07-08 1972-06-29 Shell with spherical-shaped projectiles, method for the fabrication thereof, and apparatus for the performance

Country Status (5)

Country Link
US (1) US3829940A (de)
CH (1) CH543064A (de)
FR (1) FR2149078A5 (de)
GB (1) GB1371690A (de)
IT (1) IT965706B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080148986A1 (en) * 2005-09-21 2008-06-26 Turner Mark A Kinetic energy penetrator and method of using same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES476388A1 (es) * 1978-12-27 1979-04-16 Lasheras Barrios Fernando Mejoras introducidas en la fabricacion de proyectiles.
DE7925652U1 (de) * 1979-09-11 1981-03-19 Ets. Salgad, Vaduz Fluegelstabilisiertes geschoss
AT382236B (de) * 1982-10-11 1987-01-26 Ver Edelstahlwerke Ag Verfahren zur herstellung eines splitterkoerpers und danach hergestellter splitterkoerper
DE3822817A1 (de) * 1988-07-06 1990-01-11 Rheinmetall Gmbh Splitterplatte vor einer sprengladung
DE19534215A1 (de) * 1995-09-15 1997-03-20 Diehl Gmbh & Co Splitterhülle eines Sekundärgeschosses eines Tandemgefechtskopfes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1251128A (en) * 1916-10-26 1917-12-25 Edwin H Steedman Forging apparatus.
US1358199A (en) * 1920-05-24 1920-11-09 Hadfield Robert Abbott Manufacture of armor-piercing projectiles, shells, and other hollow bodies
US2278325A (en) * 1938-10-12 1942-03-31 Lansdowne Steel & Iron Company Process for finishing forgings
US2411379A (en) * 1941-10-20 1946-11-19 Chrysler Corp Apparatus for making briquettes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1251128A (en) * 1916-10-26 1917-12-25 Edwin H Steedman Forging apparatus.
US1358199A (en) * 1920-05-24 1920-11-09 Hadfield Robert Abbott Manufacture of armor-piercing projectiles, shells, and other hollow bodies
US2278325A (en) * 1938-10-12 1942-03-31 Lansdowne Steel & Iron Company Process for finishing forgings
US2411379A (en) * 1941-10-20 1946-11-19 Chrysler Corp Apparatus for making briquettes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080148986A1 (en) * 2005-09-21 2008-06-26 Turner Mark A Kinetic energy penetrator and method of using same
US7437996B2 (en) * 2005-09-21 2008-10-21 Lockheed Martin Corporation Kinetic energy penetrator and method of using same

Also Published As

Publication number Publication date
DE2231698A1 (de) 1973-01-18
FR2149078A5 (de) 1973-03-23
DE2231698B2 (de) 1976-09-16
IT965706B (it) 1974-02-11
GB1371690A (en) 1974-10-23
CH543064A (de) 1973-10-15

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