EP0616189B1 - Manufacturing method for a projectile fragmentation casing - Google Patents
Manufacturing method for a projectile fragmentation casing Download PDFInfo
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000013467 fragmentation Methods 0.000 title claims description 4
- 238000006062 fragmentation reaction Methods 0.000 title claims description 4
- 239000002360 explosive Substances 0.000 claims description 24
- 239000012634 fragment Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000005474 detonation Methods 0.000 claims description 7
- 229910001385 heavy metal Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 4
- 229910000831 Steel Inorganic materials 0.000 claims 2
- 239000010959 steel Substances 0.000 claims 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000005520 cutting process Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000011359 shock absorbing material Substances 0.000 claims 1
- 239000002356 single layer Substances 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 206010041662 Splinter Diseases 0.000 description 33
- 238000005253 cladding Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000005242 forging Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
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)
Description
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines Splitterkörpers, bei welchem Konstruktionssplitter wenigstens einlagig zwischen zwei zentrisch ineinander angeordneten Hülsen eingepreßt sind.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.
Ein Splitterkörper, bei dem Konstruktionssplitter wenigstens einlagig zwischen zentrisch ineinander angeordneten Hülsen eingepreßt sind und wobei diese Konstruktionssplitter durch Explosivumformen zwischen der Innenhülse und der Außenhülse unter Vorfragmentierung der Innen- und Außenhülse eingeformt sind, ist aus der DE-A-2 129 196 bekannt.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.
Aus der DE 28 52 657 ist ein Splitterkörper für Splittergeschosse bekannt, bei dem als Kugeln ausgebildete Splitter einlagig zwischen zwei zentrisch ineinander angeordneten Hülsen eingepreßt sind. Die Kugeln werden durch von außen erfolgendes Kalt-Rundhämmern von einem Ausgangsteilkreis auf einen kleineren Fertigteilkreis unter Verspannung der Kugeln gebracht. Nachteilig daran ist, daß durch dieses Bearbeitungsverfahren die Kugeln auswandern und sogenannte Nester bilden. Daraus resultiert für das Geschoß eine Unwucht, die beim Abschuß zu einer erhöhten Belastung des Waffenrohrs und damit zu einem relativ hohen Verschleiß führt. Außerdem ist die Außenballistik stark beeinträchtigt, so daß die Flugbahn nicht in allen Fällen reproduzierbar ist.
Weiterhin führt das Schmieden einer derartigen Geschoßhülle nach dem zerspanenden Verformen auf die endgültige äußere Kontur zum Freiwerden von Spannungen im Bereich des Mundloches. Die Folge ist ein Verzug im Mundlochbereich mit einer derartigen Unrundheit, daß die aufzuschraubenden Zünder teilweise nicht montiert werden können.From DE 28 52 657 a splinter body for splinter projectiles is known, 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. In addition, the external ballistics is severely impaired, so that the trajectory is not reproducible in all cases.
Furthermore, the forging of such a projectile shell after the shaping shaping onto the final outer contour leads to the release of tensions in the region of the mouth hole. The result is a delay in the mouth area with such a roundness that the detonators to be screwed on can not be partially installed.
Durch die langsame und stufenweise Schmiedeumformung verlieren die relativ weichen Schwermetall-Kugelsplitter ihre ursprüngliche Form.Due to the slow and gradual forging, the relatively soft heavy metal ball fragments lose their original shape.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zur Herstellung der Splitterhülle vorzuschlagen, bei dem eine gleichmäßige Einbettung der Kugeln und eine reproduzierbare Rundheit im Mundlochbereich einer zerspanend bearbeiteten Geschoßhülle gewährleistet ist. Der Splitterkörper soll darüberhinaus kostengünstig und einfach herstellbar sein.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.
Die Erfindung löst diese Aufgabe mittels den Verfahrenschritte des Anspruches 1.
Vorteilhafte Weiterbildungen sind den Unteransprüchen zu entnehmen.The invention solves this problem by means of the method steps of claim 1.
Advantageous further developments can be found in the subclaims.
Der erfindungsgemäße Splitterkörper ist reproduzierbar herzustellen. Er zeichnet sich dadurch aus, daß die Splitter umfangseitig gleichmäßig im Splitterkörper fixiert sind, so daß Innen- und Außenballistik nicht negativ durch den Splitterkörper bzw. durch das Splittergeschoß beeinflußt werden. Die Rundheit im Mundlochbereich des Splittergeschosses ist gewährleistet.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.
Die kugelförmigen Splitterkörper behalten ihre ursprüngliche Form weitgehend bei, aufgrund der sehr hohen Umformgeschwindigkeit der Außenhülse.The spherical splinter bodies largely retain their original shape due to the very high forming speed of the outer sleeve.
Wesentlich ist auch die Dichtigkeit des Splitterbereiches zwischen den beiden Geschoßhüllen durch definierte Schweißzonen außerhalb des Splitterbereiches also im Boden- und Kopfbereich der Splitterhüllen.
Durch die Explosivumformung wird in vorteilhafter Weise eine Vorfragmentierung der inneren und äußeren Splitterhülle durch die vorgeformten Splitterhüllen bewirkt. Damit liegt eine Splitterwirkung der Konstruktionssplitter und auch beträchtliche Splitterwirkungen der Innen- und Außenhülle des Splittergeschosses im Nahbereich vor. Der mittlere und Fernbereich für die Splitterwirkung wird durch die als Kugeln ausgebildeten Konstruktionssplitter abgedeckt.
Ein wesentlicher Vorteil liegt auch dadurch vor, daß weder durch das Fertigungsverfahren noch nach langer Lagerzeit der Splittergeschosse Risse in den Geschoßhüllen auftreten. Maßgebend hierfür ist die spezielle Gestaltung der Explosivumformung. Diese sieht nämlich vor, daß zwar die Einleitung der Detonation zentral an einer Stirnseite erfolgt, jedoch der Hauptwirkungsbereich der Detonationswellen sich über den Umfang der äußeren Splitterhülle erstreckt.Also important is the tightness of the splinter area between the two shell casings through defined welding zones outside the splinter area, that is to say in the bottom and top area of the splinter casings.
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.
Bei der Umformung der Außenhülse 40 werden die Kugeln 32 lediglich im umgebenden Material eingebettet, die Hülsenenden 48, 49 verschweißen jedoch miteinander. Dies ist aufgrund der speziellen Hülsengeometrie und der Sprenganordnung möglich.When the
Es ist zwar aus der DE-C2 38 35 808 bekannt, als Verfahren zur Herstellung von Hartkerngeschossen das Explosivverformen vorzusehen. Hierbei kommt es darauf an, einen Geschoßkern herzustellen, dessen Eigenschaften über die Kernlänge reproduzierbar verändert werden können. Insbesondere soll die Geschoßspitze sehr spröde und der restliche Teil des Geschoßkernes duktil sein. Hierzu werden nicht vorgesinterte Pulverkörper unterschiedlicher Korngröße in ein Hüllrohr eingebracht. Das auf einer Unterlage stehende Hüllrohr wird dann mit Sprengstoff ummantelt, wobei kopfseitig eine Zündanordnung vorgesehen ist. Die mittlere Sprengstoffdicke im Kopfbereich beträgt etwa das dreifache der radialen Komponente des Sprengstoffs im Umfangbereich des Hüllrohres. Damit überwiegt die axialwirkende Verformungskomponente wesentlich stärker als die radialen Momente. Bei Übertragung dieses Verfahrens auf den erfindungsgemäßen Splitterkörper würde sowohl die Festigkeit der Splitter als auch die Rißfreiheit wenigstens der äußeren Splitterhülle nachteilig beeinflussen.It is known from DE-C2 38 35 808 to provide explosive molding as a method for producing hard core bullets. The important thing here is to produce a projectile core, the properties of which can be reproducibly changed over the core length. In particular, the tip of the projectile is said to be very brittle and the remaining part of the projectile core is ductile. For this purpose, powder particles of different grain sizes that are not presintered are introduced into a cladding tube. The cladding tube standing on a base is then coated with explosives, an ignition arrangement being provided on the head side. The average explosive thickness in the head area is approximately three times the radial component of the explosive in the peripheral area of the cladding tube. The axially acting deformation component thus predominates far more than the radial moments. When this method is transferred to the splinter body according to the invention, both the strength of the splinters and the absence of cracks would adversely affect at least the outer splinter shell.
Ein Ausführungsbeispiel der Erfindung ist anhand der Zeichnungen nachfolgend beschrieben.An embodiment of the invention is described below with reference to the drawings.
Es zeigt:
- Figur 1
- eine Anordnung zur Explosivumformung
- Figur 2
- ein Ausgangsteil vor der Explosivumformung und
Figur 3- das aus Fig. 2 hervorgehende Ausgangsteil in einem verformten Zustand und
Figur 4- eine Einzelheit IV gemäß
Figur 3.
- Figure 1
- an arrangement for explosive forming
- Figure 2
- an initial part before the explosive forming and
- Figure 3
- the output part shown in Fig. 2 in a deformed state and
- Figure 4
- a detail IV according to FIG. 3.
Nach Figur 1 fixiert eine Bodenplatte 1 in einer Ausnehmung 2 einen Verformungsgegenstand 3 und umfangsseitig ein Hüllrohr 4. Der Verformungsgegenstand 3 trägt an seinem freien Ende eine Kappe 5 aus Kunststoff zur Detonationswellenlenkung. Die Kappe 5 umgibt den Verformungsgegenstand 3 mit einem Rand 6 und trägt zentrisch eine Sprengkapsel 7 mit Zündleitungen 8. Das Hüllrohr 4 weist zum Verformungsgegenstand 3 in radialer Richtung einen Abstand 10 und zur Kappe 5 einen axialen Überstand 11 auf. Der Überstand 11 beträgt etwa ein Drittel des Abstandes 10. Die beschriebene Anordnung ist aufrechtstehend auf einer Unterlage 12 aus Sand in einem angedeuteten, luftevakuierbaren Behälter 13 angeordnet. Im Hüllrohr 4 liegt ein Sprengstoff 9. Der Sprengstoff 9 umgibt die Kappe 5 und umhüllt den Verformungsgegenstand nur umfangseitig.According to FIG. 1, a base plate 1 fixes a
Nach Figur 2 trägt eine Innenhülse 20 in einer Bohrung 21 einen Dorn 22 zur radialen Abstützung. Die Innenhülse 20 kann als Fließpreßteil oder auch als Vollkörper ausgebildet sein.
Die Innenhülse 20 besitzt weiterhin einen stirnseitigen Bund 23 an einem Kopf 18, einen Konus 24, eine zweifach abgestufte Eindrehung 25 mit dazwischenliegendem Konus 26 mit Durchmessern 27, 28 und einen fußseitigen zylindrischen Abschnitt 29.According to FIG. 2, an
The
In zylindrischen Längenbereichen 30, 31 und am Konus 26 sind als Konstruktionssplitter ausgebildete Kugeln 32 (Figur 4) als dichte Kugelpackungen 33 bis 35 angeordnet. Die durchmessergrößere Kugelpackung 33 zentriert eine Außenhülse 40 zusammen mit dem Bund 23 in einem konischen Stirnbereich 41 der Außenhülse 40.In
Bei Zündung der Sprengkapsel 7 breiten sich Detonationswellen oberhalb der Kappe 5 entsprechend dem Abstand 11 vorwiegend in der Ebene 19 aus. Die Verformungskraft in Richtung des Pfeiles 36 ist daher sehr klein im Verhältnis zur zentripetalen Verformungskraft des Sprengstoffes 9 über die Gesamtlänge 16; dies ist eines der wesentlichen Merkmale. Die Detonationswellen werden dann über eine konische Außenfläche 14 der Kappe 5 in einen Zylinderbereich 15 des Verformungsgegenstandes 3 umgelenkt. Der Rand 6 der Kappe 5 in Verbindung mit dem Bund 23 an dem Konus 24 verhindern ein Eindringen von Sprengstoffschwaden in den Vervormungsgegenstand 3. Dadurch ist sichergestellt, daß auf den Verformungsgegenstand 3 nur die von außen wirkende Explosivumformung wirksam ist.
In dem Zylinderbereich 15 verlaufen dann die Detonationswellen in Richtung auf die Bodenplatte 1. Durch die Umsetzung des Sprengstoffes 9 wird der Verformungsgegenstand 3 in zentripetaler Richtung gemäß seiner Gesamtlänge 16 verformt. Hierbei stützt der Dorn 22 die Innenhülse 20 ab. Alternativ zu dem Dorn 22 kann die Innenhülse 20 auch als Vollkörper ausgebildet sein, der dann - nach der Explosivumformung - ausgebohrt wird.When the
The detonation waves then run in the cylinder region 15 in the direction of the base plate 1. The
Bei der Explosivumformung wird die Außenhülse 40 in allen Bereichen in zentripetaler Richtung verformt, so daß sämtliche gezeichnete Ringspalte 42 bis 46 nicht nur von der Außenhülse 40 vollständig überbrückt werden sondern auch die Kugelpackungen 33 bis 35 in die Innen- und Außenhülse 20, 40 entsprechend der Höhen 50 eingeformt und die Innen- und Außenhülse 20, 40 in den Bereichen 29, 41, 47 gasdicht verschweißt werden. Diese Verschweißungsbereiche sind in Figur 3 durch strichpunktiert gezeichnete Linien 51, 52 angedeutet.In explosive deformation, the
Der aus Figur 2 hervorgehende Verformungsgegenstand 3 weist nach der Explosivumformung die mit 3.1 bezeichnete Außenkontur auf.The
Die strichpunktiert gezeichnete Außenkontur 3.2 sowie Innenkontur 3.3 mit einem Innengewinde 3.4 im Mundlochbereich 3.5 stellt einen fertig bearbeiteten Splitterkörper 3.6 dar. Dieser Splitterkörper 3.6 weist Ausnehmungen 3.7 und 3.8 zur Anordnung eines nicht dargestellen Führungsringes und einer ebenfalls nicht dargestellten Bodenplatte auf. Der Führungsring als auch die Bodenplatte können ebenfalls durch Explosivumformung dauerhaft und sicher mit dem Splitterkörper 3.6 verbunden werden.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.
Für einen rißfreien und gasdichten Splitterkörper 3.6 ist es wesentlich, daß die Verformung am Kopf 18 und zwar ab dem Bund 23 beginnt, sich dann über den Konus 24 stufenlos entlang der gesamten Innenhülse 20 erstreckt. Der Konus 24 begünstigt gerade die Verformung im Längenbereich 31 des kleinsten Durchmessers 27 der Innenhülse 20. Denn dort findet die größte Verformung statt.For a crack-free and gas-tight splinter body 3.6, it is essential that the deformation begins at the
Claims (8)
- Method of manufacturing a fragmentation body, in which at least a single layer of structural fragments (32) is pressed in between two cases (20,40), arranged concentrically one inside the other, this method having the following procedural stages:- Inserting the structural fragments (32) in a channel (25) of an inner case (20);- Pushing an outer case (40) onto the inner case (20);- Centring the forming object (3) comprising inner and outer cases (20,40) and structural fragments (32) in a base plate (1);- Placing a cap (5) provided with a conical outer face (14) on the forming object (3) for guiding the detonation waves, this cap (5) gripping the outer case (40) by means of a rim (6);- Fixing a covering tube (4) to the base plate (1), so that there is a space (10) in radial direction between this covering tube (4) and the outer case (40) and the covering tube (4) has an axial excess length (11) in relation to the cap (5), the excess length (11) being approximately one third of the space (10);- Arranging these specified components vertically in a vacuum-resistant container (13) on a support (12);- Inserting explosive substance (9) into the space between the covering tube (4) and the outer case (40), whilst this covering tube (4) and the outer case (40) are, as mentioned above, arranged in a vertical position on the support (12), the explosive substance (9) extending axially over a level end face of the cap (5) over the excess length (11) and the radial distance (10) defining the layer of explosive substance (9) on the circumferential side;- Evacuating the container (13);- Igniting a detonator (7), located concentrically on the cap (5), whereby, by means of this explosive forming taking place from outside, the structural fragments in the inner case (20) and the outer case (40) can be formed with prefragmenting of the still intact inner and outer cases (20,40);- Ventilating the container (13) with removal of the fragmentation body for the shape-cutting process.
- Method according to Claim 1,
characterized in that
the inner case (20) can be radially supported from the inside by a removable spike (22). - Method according to Claim 1,
characterized in that
the structural fragments are held in a spacing grid (35) with compressible bars (35.1). - Method according to Claim 1,
characterized in that
the inner and outer cases (20,40) have sections (29,47) which can be welded together outside a channel (25) for the structural fragments (32). - Method according to Claim 1,
characterized in that
the inner and outer cases (20,40) are made of a carbon-containing steel or a stainless steel and the structural fragments are made of a heavy metal or steel. - Method according to Claim 1,
characterized in that
the structural fragments (32) lie in the channel (25) of the inner case (20) which is graduated by different outer diameters (27,28) and a taper (26). - Method according to Claim 1,
characterized in that
the cap (5) used in this method is made of a shock-absorbing material. - Method according to Claim 1,
characterized in that
a head (18) on the detonating side of the inner case (20), for sealing off the intermediate space (annular opening 42-46) against the detonating products of the explosive substance, has a band (23) which lies adjacent to the inlet area of the outer case (40).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4308027A DE4308027A1 (en) | 1993-03-13 | 1993-03-13 | Splinter body for splinter projectiles and method for producing a splinter projectile |
| DE4308027 | 1993-03-13 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0616189A2 EP0616189A2 (en) | 1994-09-21 |
| EP0616189A3 EP0616189A3 (en) | 1995-01-18 |
| EP0616189B1 true EP0616189B1 (en) | 1996-06-05 |
Family
ID=6482720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94103489A Expired - Lifetime EP0616189B1 (en) | 1993-03-13 | 1994-03-08 | Manufacturing method for a projectile fragmentation casing |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0616189B1 (en) |
| DE (2) | DE4308027A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19538313A1 (en) | 1995-10-14 | 2013-12-05 | Diehl Stiftung & Co. Kg | Method for manufacturing coil penetrator of fragment projectile, involves rolling individual heavy metal films on core, and interconnecting individual windings of coil by radial action of cylindrical detonation face |
| SE543620C2 (en) * | 2017-12-05 | 2021-04-20 | Bae Systems Bofors Ab | Effect part with preformed elements |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2129196C3 (en) * | 1971-06-12 | 1975-11-13 | Fa. Diehl, 8500 Nuernberg | Fragmentation body for fragmentation projectiles and warheads |
| DE2353204C3 (en) * | 1973-10-24 | 1978-09-21 | Fa. Diehl, 8500 Nuernberg | Explosive projectile |
| DE2460013C3 (en) * | 1974-12-19 | 1978-08-24 | Sintermetallwerk Krebsoege Gmbh, 5608 Radevormwald | Process for the production of metallic moldings |
| DE2557676A1 (en) * | 1975-12-20 | 1977-06-30 | Diehl Fa | Projectile contg. fragments of depleted uranium alloy - giving high penetrating power esp. armour piercing and incendiary action |
| DE2852657C2 (en) * | 1978-12-06 | 1984-10-04 | Diehl GmbH & Co, 8500 Nürnberg | Fragmentation body for fragmentation projectiles |
| DE3835808A1 (en) * | 1988-10-21 | 1990-04-26 | Rheinmetall Gmbh | Method for producing hard-core projectiles (kinetic-energy projectiles) |
-
1993
- 1993-03-13 DE DE4308027A patent/DE4308027A1/en not_active Withdrawn
-
1994
- 1994-03-08 EP EP94103489A patent/EP0616189B1/en not_active Expired - Lifetime
- 1994-03-08 DE DE59400323T patent/DE59400323D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59400323D1 (en) | 1996-07-11 |
| EP0616189A2 (en) | 1994-09-21 |
| EP0616189A3 (en) | 1995-01-18 |
| DE4308027A1 (en) | 1994-09-15 |
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