EP0616189B1 - Procédé de fabrication d'une enveloppe à fragmentation pour projectiles - Google Patents

Procédé de fabrication d'une enveloppe à fragmentation pour projectiles Download PDF

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Publication number
EP0616189B1
EP0616189B1 EP94103489A EP94103489A EP0616189B1 EP 0616189 B1 EP0616189 B1 EP 0616189B1 EP 94103489 A EP94103489 A EP 94103489A EP 94103489 A EP94103489 A EP 94103489A EP 0616189 B1 EP0616189 B1 EP 0616189B1
Authority
EP
European Patent Office
Prior art keywords
cap
structural fragments
case
explosive
outer case
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
EP94103489A
Other languages
German (de)
English (en)
Other versions
EP0616189A3 (fr
EP0616189A2 (fr
Inventor
Heinrich Dr. Hampel
Max Rentzsch
Hans Strauss
Gerald Rieger
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.)
Diehl Verwaltungs Stiftung
Original Assignee
Diehl GmbH and Co
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 Diehl GmbH and Co filed Critical Diehl GmbH and Co
Publication of EP0616189A2 publication Critical patent/EP0616189A2/fr
Publication of EP0616189A3 publication Critical patent/EP0616189A3/fr
Application granted granted Critical
Publication of EP0616189B1 publication Critical patent/EP0616189B1/fr
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

  • the invention relates to a method for producing a splinter body, in which construction splinters are pressed at least in one layer between two sleeves arranged centrally in one another.
  • a splinter body in which construction splinters are pressed at least in one layer between centrally arranged sleeves and which construction splinters are formed by explosive deformation between the inner sleeve and the outer sleeve with pre-fragmentation of the inner and outer sleeves, is known from DE-A-2 129 196.
  • a splinter body for splinter projectiles in which splinters designed as spheres are pressed in in one layer between two sleeves arranged centrally in one another.
  • the balls are brought from an initial pitch circle to a smaller prefabricated circle by tensioning the balls by external circular hammering.
  • the disadvantage of this is that the balls emigrate through this machining process and form so-called nests. This results in an imbalance for the projectile, which leads to an increased load on the weapon barrel and thus to a relatively high level of wear when fired.
  • the external ballistics is severely impaired, so that the trajectory is not reproducible in all cases.
  • the invention is therefore based on the object of proposing a method for producing the splinter casing, in which a uniform embedding of the balls and a reproducible roundness in the region of the mouth hole of a machined projectile casing is ensured.
  • the splinter body should also be inexpensive and easy to manufacture.
  • the splinter body according to the invention can be produced reproducibly. It is characterized by the fact that the fragments are uniformly fixed on the circumference in the splinter body, so that the inside and outside ballistics are not negatively influenced by the splinter body or by the splinter floor. The roundness in the mouth hole area of the splinter floor is guaranteed.
  • the spherical splinter bodies largely retain their original shape due to the very high forming speed of the outer sleeve.
  • the explosive deformation advantageously causes the inner and outer splinter shells to be pre-fragmented by the pre-shaped splinter shells. This results in a splinter effect of the construction splinters and also considerable splinter effects of the inner and outer shell of the splinter floor in the vicinity. The middle and far range for the splinter effect is covered by the construction splinters designed as spheres.
  • a major advantage is also that cracks do not occur in the shell of the shell either due to the manufacturing process or after a long storage period of the fragmentary bullets.
  • the special design of the explosive forming is decisive for this. This sees namely, that the detonation is initiated centrally on one end face, but the main area of action of the detonation waves extends over the circumference of the outer fragment shell.
  • the balls 32 are only embedded in the surrounding material, but the sleeve ends 48, 49 weld to one another. This is possible due to the special sleeve geometry and the blasting arrangement.
  • a base plate 1 fixes a deformation object 3 in a recess 2 and a cladding tube 4 on the circumference.
  • the deformation object 3 has a plastic cap 5 for detonation wave guidance at its free end.
  • the cap 5 surrounds the deformation object 3 with an edge 6 and carries a detonator capsule 7 with ignition lines 8 in the center.
  • the protrusion 11 is approximately a third of the distance 10.
  • the arrangement described is arranged upright on a base 12 made of sand in an indicated, air-evacuable container 13.
  • An explosive 9 lies in the cladding tube 4. The explosive 9 surrounds the cap 5 and only encases the deformation object on the circumference.
  • an inner sleeve 20 carries a mandrel 22 in a bore 21 for radial support.
  • the inner sleeve 20 can be designed as an extruded part or as a solid body.
  • the inner sleeve 20 also has a front collar 23 on a head 18, a cone 24, a two-stage recess 25 with an intermediate cone 26 with diameters 27, 28 and a cylindrical section 29 on the foot side.
  • balls 32 designed as structural splinters are arranged as tight ball packs 33 to 35.
  • the larger diameter spherical packing 33 centers an outer sleeve 40 together with the collar 23 in a conical end region 41 of the outer sleeve 40.
  • detonation waves propagate above the cap 5 corresponding to the distance 11 predominantly in the plane 19.
  • the deformation force in the direction of arrow 36 is therefore very small in relation to the centripetal deformation force of the explosive 9 over the entire length 16; this is one of the essential characteristics.
  • the detonation waves are then deflected via a conical outer surface 14 of the cap 5 into a cylinder region 15 of the deformation object 3.
  • the edge 6 of the cap 5 in connection with the collar 23 on the cone 24 prevent penetration of Fumes of explosives into the preform 3. This ensures that only the explosive deformation acting from the outside is effective on the deformation object 3.
  • the detonation waves then run in the cylinder region 15 in the direction of the base plate 1.
  • the deformation object 3 is deformed in the centripetal direction according to its total length 16 by the implementation of the explosive 9.
  • the mandrel 22 supports the inner sleeve 20.
  • the inner sleeve 20 can also be designed as a solid body which is then drilled out after the explosive shaping.
  • the outer sleeve 40 In explosive deformation, the outer sleeve 40 is deformed in all areas in the centripetal direction, so that all the annular gaps 42 to 46 drawn are not only completely bridged by the outer sleeve 40 but also the ball packs 33 to 35 in the inner and outer sleeves 20, 40 corresponding to the Heights 50 are molded and the inner and outer sleeves 20, 40 are welded gas-tight in the areas 29, 41, 47. These welding areas are indicated in FIG. 3 by dashed lines 51, 52.
  • the deformation object 3 shown in FIG. 2 has the outer contour designated 3.1 after the explosive deformation.
  • the dash-dotted outer contour 3.2 and inner contour 3.3 with an internal thread 3.4 in the mouth region 3.5 represents a finished chip body 3.6.
  • This body 3.6 has recesses 3.7 and 3.8 for the arrangement of a guide ring (not shown) and a base plate, also not shown.
  • the guide ring and the base plate can also be permanently and securely connected to the splinter body 3.6 by explosive deformation.
  • the deformation begins at the head 18, specifically from the collar 23, then extends continuously over the cone 24 along the entire inner sleeve 20.
  • the cone 24 just favors the deformation in the length range 31 of the smallest diameter 27 of the inner sleeve 20. This is where the greatest deformation takes place.

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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)

Claims (8)

  1. Procédé de fabrication d'un corps à éclats, dans lequel des éclats de construction (32) sont pressés au moins en une couche entre deux douilles (20, 40) centrées l'une dans l'autre, ce procédé présentant les étapes suivantes :
    - mise en place des éclats de construction (32) dans une partie tournée (25) d'une douille intérieure (20) ;
    - emmanchement d'une douille extérieure (40) sur la douille intérieure (20) ;
    - centrage de l'objet de déformation (3), constitué de la douille intérieure et de la douille extérieure (20, 40) des éclats de construction (32), dans une plaque de fond (1) ;
    - mise en place d'un capuchon (5), pourvu d'une face extérieure (14) conique sur l'objet de déformation (3), pour la direction des ondes de détonation, ce capuchon (5) entourant la douille extérieure (40) avec un bord (6) ;
    - fixation d'un tube d'enveloppe (4) sur la plaque de fond (1), de sorte que ce tube d'enveloppe (4) présente radialement une distance (10) par rapport à la douille extérieure (40) et un dépassement axial (11) par rapport au capuchon (5), le dépassement (11) constituant à peu près un tiers de la distance (10) ;
    - agencement vertical de ces éléments cités dans un récipient (13) résistant à la dépression sur un support (12) ;
    - introduction d'explosif (9) dans l'espace compris entre le tube d'enveloppe (4) et la douille extérieure (40), tandis que ce tube d'enveloppe (4) et la douille extérieure (40) se trouvent dans la disposition verticale ci-dessus sur le support (12), l'explosif (9) s'étendant axialement au-dessus d'une face frontale plane du capuchon (5) sur le dépassement (11), et la distance radiale (10) définissant la couche périphérique d'explosif (9) ;
    - mise sous vide du récipient (13) ;
    - allumage d'une capsule explosive (7), placée au centre sur le capuchon (5), cette déformation explosive, survenant de l'extérieur, permettant de mouler les éclats de construction à l'intérieur de la douille intérieure (20) et de la douille extérieure (40), avec préfragmentation de la douille intérieure et de la douille extérieure (20, 40) restant sans fissures;
    - aération du récipient (13) avec prélèvement du corps à éclats pour le formage avec enlèvement de copeaux.
  2. Procédé selon la revendication 1, caractérisé
    en ce que la douille intérieure (20) peut être soutenue radialement de l'intérieur par un mandrin (22) amovible.
  3. Procédé selon la revendication 1, caractérisé
    en ce que les éclats de construction sont maintenus dans une grille d'écartement (35) avec des cloisons (35.1) compressibles.
  4. Procédé selon la revendication 1, caractérisé
    en ce que la douille intérieure et la douille extérieure (20, 40) présentent des portions (29, 47) soudables, à l'extérieur d'une partie tournée (25) pour les éclats de construction (32).
  5. Procédé selon la revendication 1, caractérisé
    en ce que la douille intérieure et la douille extérieure (20, 40) sont réalisées dans un acier au carbone ou dans un acier inoxydable et les éclats de construction sont réalisés dans un métal lourd ou en acier.
  6. Procédé selon la revendication 1, caractérisé
    en ce que les éclats de construction (32) se trouvent dans la partie tournée (25), étagée par différents diamètres extérieurs (27, 28) et un cône (26), de la douille intérieure (20).
  7. Procédé selon la revendication 1, caractérisé
    en ce que le capuchon (5) utilisé dans ce procédé est réalisé dans un matériau amortissant les chocs.
  8. Procédé selon la revendication 1, caractérisé
    en ce qu'une tête (18) côté allumage de la douille intérieure (20) comporte, pour l'étanchéité de l'espace intermédiaire (fentes annulaires 42 à 46) contre les gaz d'explosif, un épaulement (23), qui s'applique contre la zone d'entrée de la douille extérieure (40).
EP94103489A 1993-03-13 1994-03-08 Procédé de fabrication d'une enveloppe à fragmentation pour projectiles Expired - Lifetime EP0616189B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4308027A DE4308027A1 (de) 1993-03-13 1993-03-13 Splitterkörper für Splittergeschosse und Verfahren zur Herstellung eines Splittergeschosses
DE4308027 1993-03-13

Publications (3)

Publication Number Publication Date
EP0616189A2 EP0616189A2 (fr) 1994-09-21
EP0616189A3 EP0616189A3 (fr) 1995-01-18
EP0616189B1 true EP0616189B1 (fr) 1996-06-05

Family

ID=6482720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103489A Expired - Lifetime EP0616189B1 (fr) 1993-03-13 1994-03-08 Procédé de fabrication d'une enveloppe à fragmentation pour projectiles

Country Status (2)

Country Link
EP (1) EP0616189B1 (fr)
DE (2) DE4308027A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19538313A1 (de) 1995-10-14 2013-12-05 Diehl Stiftung & Co. Kg Verfahren zur Herstellung eines Wickelpenetrators
SE543620C2 (sv) 2017-12-05 2021-04-20 Bae Systems Bofors Ab Verkansdel med förformade element

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2129196C3 (de) * 1971-06-12 1975-11-13 Fa. Diehl, 8500 Nuernberg Splitterkörper für Splittergeschosse und -gefechtskopfe
DE2353204C3 (de) * 1973-10-24 1978-09-21 Fa. Diehl, 8500 Nuernberg Sprenggeschoß
DE2460013C3 (de) * 1974-12-19 1978-08-24 Sintermetallwerk Krebsoege Gmbh, 5608 Radevormwald Verfahren zum Herstellen metallischer Formkörper
DE2557676A1 (de) * 1975-12-20 1977-06-30 Diehl Fa Splittergeschoss
DE2852657C2 (de) * 1978-12-06 1984-10-04 Diehl GmbH & Co, 8500 Nürnberg Splitterkörper für Splittergeschosse
DE3835808A1 (de) * 1988-10-21 1990-04-26 Rheinmetall Gmbh Verfahren zur herstellung von hartkerngeschossen

Also Published As

Publication number Publication date
DE4308027A1 (de) 1994-09-15
EP0616189A3 (fr) 1995-01-18
EP0616189A2 (fr) 1994-09-21
DE59400323D1 (de) 1996-07-11

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