EP0350572B1 - Splinter plate in front of an explosive charge - Google Patents

Splinter plate in front of an explosive charge Download PDF

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Publication number
EP0350572B1
EP0350572B1 EP89106036A EP89106036A EP0350572B1 EP 0350572 B1 EP0350572 B1 EP 0350572B1 EP 89106036 A EP89106036 A EP 89106036A EP 89106036 A EP89106036 A EP 89106036A EP 0350572 B1 EP0350572 B1 EP 0350572B1
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EP
European Patent Office
Prior art keywords
metal bodies
fact
plate
accordance
fragmentation plate
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
EP89106036A
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German (de)
French (fr)
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EP0350572A1 (en
Inventor
Peter Bender
Heribert Rohrbeck
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 Industrie AG
Original Assignee
Rheinmetall Industrie AG
Rheinmetall GmbH
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Application filed by Rheinmetall Industrie AG, Rheinmetall GmbH filed Critical Rheinmetall Industrie AG
Publication of EP0350572A1 publication Critical patent/EP0350572A1/en
Application granted granted Critical
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Anticipated expiration legal-status Critical
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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

  • the invention relates to a spherical segment-shaped splinter plate in the axial direction before an explosive charge according to the features specified in the preamble of claim 1.
  • Such splinter plates are known, for example, from DE-PS 28 21 723. These domed splinter plates contain balls that have parallel flats in the cross section of a hexagon. If bundling of the metal bodies in a predetermined direction of ejection is desired, the lateral parallel flats enable the splinter plate to be arranged curved outwards or inwards with respect to the explosive.
  • Splinter plates of this type can be arranged on an explosive charge of an explosive grenade or another projectile, for example in daughter storeys, of discharge projectiles which are fired and ejected one after the other, as shown in DE 29 07 308.
  • a disadvantage of the known arrangements is a complicated manufacturing process, since the individual spherical bodies have to be soldered to one another and the plates have to be cast on the surface with hard solder. As a result, mounting plates are required which hold the individual metal bodies in their position during the manufacturing process of the splinter plate.
  • CH-A-56166 shows a masonry-like stacked arrangement of splinter elements, but due to the tubular splitter arrangement a simultaneous detachment of the splinters, in particular also from the firing sequence from front to back, does not guarantee.
  • the invention is therefore based on the object of improving a splinter plate with the features of the preamble of patent claim 1 in such a way that, on the one hand, its manufacture without substantial Assembly aids are possible, and that, on the other hand, the spherical bodies can always be ejected at the same time in the desired direction after a corresponding ejection pressure has formed behind the splinter plate. In addition, the effectiveness of the sliver plate should be increased.
  • the invention advantageously allows that the adjacent balls by the uniform tapering of all flats in the direction of the center of the radius of curvature of the curved splinter plate lie flat against each other on their flats in maximum area size and easily form a self-supporting splinter plate, which is easy to install and even Pressure build-up and simultaneous ejection of all balls located in the curved splinter plate are permitted.
  • the shell on the explosive side of the metal body also serves as a mounting plate. However, it also improves the ejection process in that the balls are only ejected when an increased, uniform pressure has built up behind this shell. As a result, a further increase in the speed of splintering of the metal bodies is possible.
  • FIGS. 1 and 2 different embodiments of splinter plates in vertical section, a plan view of the splitter plate being shown in FIGS. 1a and 2a and a detail enlarged in FIGS. 1b and 2b.
  • FIG. 1 shows an embodiment in which metal bodies 1 lie as hexagon balls on an unperforated shell 2.
  • An outer shell 3 is provided in the left-hand area, while only one potting compound 6 is provided on the outside in a variant to the right-hand area.
  • the potting compound 6 is arranged above the hexagon balls and in the spaces between the shell 2 and the balls 1 and consists, for example, of plastic, adhesive or solder, as a result of which it connects the metal body 1 with the shell 2 or with the inner and outer shells 2, 3 connects.
  • Small additional bodies made of metal, ceramic or the like, for example balls, can be arranged in the casting compound, by means of which the scattering effect of the splinter plate against soft targets is expanded.
  • 1b shows side views above and below a top view of the hexagon ball.
  • FIGS. 1 to 1b show a representation corresponding to FIGS. 1 to 1b, only with the difference that here instead of hexagon balls so-called hexagon projectiles are used as the metal body 1, the length / diameter ratio of which is approximately in the range of 3, compared to the length / diameter ratio of the hexagon balls of 1. A considerable increase in performance can be achieved by designing the projectiles according to FIG. 2.
  • the metal bodies 1 which consist of spheres with lateral flats in the form of a regular polygon, are held as a lower and upper shell between two, pre-shaped, for example, pre-stamped sheets corresponding to the spherical shape.
  • the inside of the shells can be covered with solder or with an adhesive film.
  • the sheets can be preformed plates before assembly, or flat plates are positively formed during assembly in an isostatic pressing process over the metal bodies.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Laminated Bodies (AREA)
  • Disintegrating Or Milling (AREA)

Description

Die Erfindung betrifft eine kugelabschnittsförmig gewölbte Splitterplatte in Axialrichtung vor einer Sprengladung nach den im Oberbegriff des Pantentanspruchs 1 angegebenen Merkmalen.The invention relates to a spherical segment-shaped splinter plate in the axial direction before an explosive charge according to the features specified in the preamble of claim 1.

Derartige Splitterplatten sind beispielsweise aus der DE-PS 28 21 723 als bekannt zu entnehmen. Diese gewölbten Splitterplatten enthalten Kugeln, die seitlich parallele Abflachungen im Querschnitt eines Sechsecks aufweisen. Wenn eine Bündelung der Metallkörper in einer vorbestimmten Ausstoßrichtung erwünscht ist, ermöglichen die seitlichen parallelen Abflachungen, daß die Splitterplatte in bezug auf den Sprengstoff hin auswärts oder einwärts gekrümmt angeordnet sein kann.Such splinter plates are known, for example, from DE-PS 28 21 723. These domed splinter plates contain balls that have parallel flats in the cross section of a hexagon. If bundling of the metal bodies in a predetermined direction of ejection is desired, the lateral parallel flats enable the splinter plate to be arranged curved outwards or inwards with respect to the explosive.

Derartige Splitterplatten können an einer Sprengstoffladung einer explosiven Granate oder eines anderen Geschosses, beispielsweise in Tochtergeschossen, von Ausstoßgeschossen, die nacheinander gezündet und ausgestoßen werden, wie es die DE 29 07 308 zeigt, angeordnet sein.Splinter plates of this type can be arranged on an explosive charge of an explosive grenade or another projectile, for example in daughter storeys, of discharge projectiles which are fired and ejected one after the other, as shown in DE 29 07 308.

Nachteilig bei den bekannten Anordnungen ist ein umständliches Herstellungsverfahren, da die einzelnen Kugelkörper miteinander verlötet werden müssen und die Platten an der Oberfläche mit Hartlot zu vergießen sind. Dadurch bedingt sind Montageplatten erforderlich, die die einzelnen Metallkörper beim Herstellungsvorgang der Splitterplatte in ihrer Lage halten.A disadvantage of the known arrangements is a complicated manufacturing process, since the individual spherical bodies have to be soldered to one another and the plates have to be cast on the surface with hard solder. As a result, mounting plates are required which hold the individual metal bodies in their position during the manufacturing process of the splinter plate.

Weiterhin ist bei den bekannten Anordnungen nachteilig, daß eine sichere Abdichtung der Kugelkörper gegen die Sprengstoffschwaden nicht erreichbar ist, da die mit den glatten Abflachungen parallel aneinanderliegenden Gleitflächen aufgrund der gewölbten Plattenform und der dadurch bedingten unterschiedlichen Kontaktflächen auch nur unterschiedlich fest miteinander verbunden werden können, so daß ein Ausstoßen der Kugeln zeitgleich in der gewollten Richtung gefährdet ist.Furthermore, it is disadvantageous in the known arrangements that a secure sealing of the spherical bodies against the explosive swaths cannot be achieved, since the sliding surfaces lying parallel to one another with the smooth flats can only be connected to one another to different extents due to the curved plate shape and the resulting different contact surfaces that an ejection of the balls is at the same time endangered in the desired direction.

Die CH-A-56166 zeigt eine mauerwerkartig gestapelte Anordnung von Splitterelementen, die jedoch auf Grund der rohrförmigen Splitteranordnung eine gleichzeitige Loslösung der Splitter, insbesondere auch durch die Zündfolge von vorn nach hinten, nicht gewährleistet.CH-A-56166 shows a masonry-like stacked arrangement of splinter elements, but due to the tubular splitter arrangement a simultaneous detachment of the splinters, in particular also from the firing sequence from front to back, does not guarantee.

Der Erfindung liegt demnach die Aufgabe zugrunde, eine Splitterplatte mit den Merkmalen des Oberbegriffs des Patentanspruchs 1 dahingehend zu verbessern, daß einerseits ihre Herstellung ohne wesentliche Montagehilfen möglich ist, und daß andererseits ein Ausstoßen der Kugelkörper stets zeitgleich in der gewollten Richtung, nachdem sich hinter der Splitterplatte ein entsprechender Ausstoßdruck gebildet hat, erfolgen kann. Außerdem soll die Wirksamkeit der Splitterplatte erhöht werden.The invention is therefore based on the object of improving a splinter plate with the features of the preamble of patent claim 1 in such a way that, on the one hand, its manufacture without substantial Assembly aids are possible, and that, on the other hand, the spherical bodies can always be ejected at the same time in the desired direction after a corresponding ejection pressure has formed behind the splinter plate. In addition, the effectiveness of the sliver plate should be increased.

Gelöst wird diese Aufgabe durch die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Merkmale. Die Unteransprüche nennen vorteilhafte Ausführungsarten der Erfindung.This object is achieved by the features specified in the characterizing part of patent claim 1. The subclaims name advantageous embodiments of the invention.

Die Erfindung ermöglicht in vorteilhafter Weise, daß die aneinanderliegenden Kugeln durch die gleichmäßige Verjüngung aller Abflachungen in Richtung des Mittelpunktes des Krümmungsradius der gewölbten Splitterplatte an ihren Abflachungen in maximaler Flächengröße gleichmäßig aneinanderliegen und auf einfache Weise eine selbsttragende Splitterplatte bilden, die eine einfache Montage und einen gleichmäßigen Druckaufbau sowie ein zeitgleiches Ausstoßen aller in der gewölbten Splitterplatte befindlichen Kugeln gestattet.The invention advantageously allows that the adjacent balls by the uniform tapering of all flats in the direction of the center of the radius of curvature of the curved splinter plate lie flat against each other on their flats in maximum area size and easily form a self-supporting splinter plate, which is easy to install and even Pressure build-up and simultaneous ejection of all balls located in the curved splinter plate are permitted.

Die Schale an der Sprengstoffseite der Metallkörper dient zusätzlich als Montageplatte. Sie verbessert aber auch den Ausstoßvorgang dadurch, daß ein Ausstoßen der Kugeln erst dann eintritt, wenn sich hinter dieser Schale ein erhöhter gleichmäßiger Druck aufgebaut hat. Dadurch bedingt ist eine weitere Erhöhung der Splittergeschwindigkeit der Metallkörper möglich.The shell on the explosive side of the metal body also serves as a mounting plate. However, it also improves the ejection process in that the balls are only ejected when an increased, uniform pressure has built up behind this shell. As a result, a further increase in the speed of splintering of the metal bodies is possible.

Die Zeichnung zeigt in den Fig. 1 und 2 unterschiedliche Ausführungsformen von Splitterplatten im senkrechten Schnitt, wobei jeweils in den Fig. 1a und 2a eine Draufsicht auf die Splitterplatte und in den Fig. 1b und 2b jeweils eine Einzelheit vergrößert herausgezeichnet ist.The drawing shows in FIGS. 1 and 2 different embodiments of splinter plates in vertical section, a plan view of the splitter plate being shown in FIGS. 1a and 2a and a detail enlarged in FIGS. 1b and 2b.

Die Fig. 1 zeigt eine Ausführungsform, bei der Metallkörper 1 als Sechskantkugeln auf einer ungelochten Schale 2 aufliegen. Im linken Bereich ist eine Außenschale 3 vorgesehen, während bei einer Variante nach dem rechten Bereich außen lediglich eine Vergußmasse 6 vorgesehen ist.1 shows an embodiment in which metal bodies 1 lie as hexagon balls on an unperforated shell 2. An outer shell 3 is provided in the left-hand area, while only one potting compound 6 is provided on the outside in a variant to the right-hand area.

Die Vergußmasse 6 ist oberhalb der Sechskantkugeln und in den Zwischenräumen zwischen der Schale 2 und den Kugeln 1 angeordnet und besteht beispielsweise aus Kunststoff, Klebstoff oder aus Lot, wodurch sie die Metallkörper 1 mit der Schale 2 oder mit den Innen- und Außenschalen 2,3 verbindet. In der Vergußmasse können kleine Zusatzkörper aus Metall, Keramik o. dgl. , beispielsweise Kugeln, angeordnet sein, durch die die Streuwirkung der Splitterplatte gegen weiche Ziele erweitert wird.The potting compound 6 is arranged above the hexagon balls and in the spaces between the shell 2 and the balls 1 and consists, for example, of plastic, adhesive or solder, as a result of which it connects the metal body 1 with the shell 2 or with the inner and outer shells 2, 3 connects. Small additional bodies made of metal, ceramic or the like, for example balls, can be arranged in the casting compound, by means of which the scattering effect of the splinter plate against soft targets is expanded.

Die Sechskantkugeln verlaufen mit ihren Abflachungen 5 - wie es die Fig. 1b in den oberen Ansichtsdarstellungen zeigt - zur Sprengstoffseite hin konisch, so daß die in der Fig. 1 angedeuteten Verlängerungslinien der Abflachungen 5 bzw. die Radien sich im Mittelpunkt des Krümmungsradius der gekrümmten Splitterplatte treffen.The hexagon balls with their flattened portions 5 - as shown in FIG. 1b in the upper view - conical towards the explosives side, so that the extension lines of the flattened portions 5 or the radii indicated in FIG. 1 are at the center of the radius of curvature of the curved splinter plate to meet.

Die Fig. 1b zeigt oben Seitenansichten und darunter eine Draufsicht auf die Sechskantkugel.1b shows side views above and below a top view of the hexagon ball.

Die Fig. 2 bis 2b zeigen eine den Fig. 1 bis 1b entsprechende Darstellung, lediglich mit dem Unterschied, daß hier statt Sechskantkugeln sogenannte Sechskantprojektile als Metallkörper 1 verwendet werden, deren Länge/Durchmesserverhältnis etwa im Bereich von 3 liegt, gegenüber dem Länge/Durchmesserverhältnis der Sechskantkugeln von 1. Durch die Ausbildung der Projektile nach der Fig. 2 ist eine erhebliche Leistungssteigerung zu erreichen.2 to 2b show a representation corresponding to FIGS. 1 to 1b, only with the difference that here instead of hexagon balls so-called hexagon projectiles are used as the metal body 1, the length / diameter ratio of which is approximately in the range of 3, compared to the length / diameter ratio of the hexagon balls of 1. A considerable increase in performance can be achieved by designing the projectiles according to FIG. 2.

In einer weiteren nicht dargestellten Ausführungsform sind die aus Kugeln mit seitlichen Abflachungen in Form eines regelmäßigen Vielecks bestehenden Metallkörper 1 zwischen zwei, entsprechend der Kugelform vorgeformten, beispielsweise vorgeprägten Blechen als Unter- und Oberschale gehalten. Die Innenseite der Schalen kann mit Lot oder mit einem Klebefolie belegt sein. Die Bleche können als vorgeformte Platten vor der Montage vorliegen, oder es werden ebene Platten bei der Montage in einem isostatischen Preßvorgang über den Metallkörpern formschlüssig geformt.In a further embodiment, not shown, the metal bodies 1, which consist of spheres with lateral flats in the form of a regular polygon, are held as a lower and upper shell between two, pre-shaped, for example, pre-stamped sheets corresponding to the spherical shape. The inside of the shells can be covered with solder or with an adhesive film. The sheets can be preformed plates before assembly, or flat plates are positively formed during assembly in an isostatic pressing process over the metal bodies.

Claims (7)

  1. Segmented convex fragmentation plate positioned axially in front of an explosive charge, said plate comprising metal bodies (1), situated adjacent to and in contact with one another and which are provided on the sides by which they are contiguous with one another with cross sectional flattened parts (5) in the form of a regular polygon and which have at least one hemispherical basic shape on the exterior of the fragmentation plate, characterised by the fact that all flattened parts (5) taper towards the side corresponding to the explosive charge and the metal bodies (1) are arranged so that the extension lines of all flattened parts (5) meet at the central point of the radius of curvature of the segmentally convex fragmentation plate, the said metal bodies (1) being held, at least on the explosive charge side, by a shell (2) preferably comprising sheet metal.
  2. Fragmentation plate in accordance with Claim 1, characterised by the fact that the ratio of the length of the metal bodies (1) to their diameter ranges from unity upwards, being preferably 3 to 5.
  3. Fragmentation plate in accordance with Claims 1, or 2, characterised by the fact that the external and the intermediate spaces between the metal bodies and the shell (2) have a casting compound (6) of plastic, adhesive or solder, into which, if required, small additional bodies of metal or ceramic, for example balls, are embedded.
  4. Fragmentation plate in accordance with one of Claims 1 to 3, characterised by the fact that the outside is covered by an outer shell (3).
  5. Fragmentation plate in accordance with one of Claims 1 to 4, characterised by the fact that the connection of the metal bodies to the shell (2) or shells (2,3) is effected by soldering or casting or with an adhesive.
  6. Fragmentation plate in accordance with Claim 1, characterised by the fact that the metal bodies (1) comprise balls with lateral cross sectionally flattened parts in the form of a regular polygon which are held between two shells preformed, for example, pre-embossed, in accordance with the spherical shape.
  7. Method for the production of a fragmentation plate according to Claim 6, characterised by the fact that flat plates forming the starting material for the shells and also the metal bodies (1) are pretreated with solder or adhesive or are covered with an adhesive foil, after which the plates undergo deformation and are connected to the metal bodies by a heating process.
EP89106036A 1988-07-06 1989-04-06 Splinter plate in front of an explosive charge Expired - Lifetime EP0350572B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3822817 1988-07-06
DE3822817A DE3822817A1 (en) 1988-07-06 1988-07-06 SPLITTER PLATE BEFORE CHARGING

Publications (2)

Publication Number Publication Date
EP0350572A1 EP0350572A1 (en) 1990-01-17
EP0350572B1 true EP0350572B1 (en) 1993-06-09

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EP89106036A Expired - Lifetime EP0350572B1 (en) 1988-07-06 1989-04-06 Splinter plate in front of an explosive charge

Country Status (4)

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US (1) US4982668A (en)
EP (1) EP0350572B1 (en)
DE (2) DE3822817A1 (en)
NO (1) NO166343C (en)

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Also Published As

Publication number Publication date
NO166343C (en) 1991-07-03
EP0350572A1 (en) 1990-01-17
NO891441L (en) 1990-01-08
DE3822817A1 (en) 1990-01-11
NO891441D0 (en) 1989-04-07
NO166343B (en) 1991-03-25
US4982668A (en) 1991-01-08
DE58904603D1 (en) 1993-07-15

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