EP3642556A1 - Cutting device - Google Patents

Cutting device

Info

Publication number
EP3642556A1
EP3642556A1 EP18730748.3A EP18730748A EP3642556A1 EP 3642556 A1 EP3642556 A1 EP 3642556A1 EP 18730748 A EP18730748 A EP 18730748A EP 3642556 A1 EP3642556 A1 EP 3642556A1
Authority
EP
European Patent Office
Prior art keywords
firing pin
cutting device
stop
cutting
charge
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.)
Withdrawn
Application number
EP18730748.3A
Other languages
German (de)
French (fr)
Inventor
Tobias MODEREGGER
Rainer Gaisbauer
Benjamin HUBER
Thomas Leopold
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 Waffe Munition GmbH
Original Assignee
Rheinmetall Waffe Munition GmbH
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 Rheinmetall Waffe Munition GmbH filed Critical Rheinmetall Waffe Munition GmbH
Publication of EP3642556A1 publication Critical patent/EP3642556A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/12—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor
    • B23D15/14—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure
    • B23D15/145—Shearing machines or shearing devices cutting by blades which move parallel to themselves characterised by drives or gearings therefor actuated by fluid or gas pressure actuated by explosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D15/00—Shearing machines or shearing devices cutting by blades which move parallel to themselves
    • B23D15/04—Shearing machines or shearing devices cutting by blades which move parallel to themselves having only one moving blade
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D29/00—Hand-held metal-shearing or metal-cutting devices
    • B23D29/002—Hand-held metal-shearing or metal-cutting devices for cutting wire or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D17/00—Parachutes
    • B64D17/22—Load suspension
    • B64D17/38—Releasable fastening devices between parachute and load or pack
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C7/00—Fuzes actuated by application of a predetermined mechanical force, e.g. tension, torsion, pressure
    • F42C7/12—Percussion fuzes of the double-action type, i.e. fuzes cocked and fired in a single movement, e.g. by pulling an incorporated percussion pin or hammer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D17/00—Parachutes
    • B64D17/22—Load suspension
    • B64D17/38—Releasable fastening devices between parachute and load or pack
    • B64D17/386—Devices adapted to cut lines or straps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/32—Range-reducing or range-increasing arrangements; Fall-retarding means
    • F42B10/48—Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding
    • F42B10/56—Range-reducing, destabilising or braking arrangements, e.g. impact-braking arrangements; Fall-retarding means, e.g. balloons, rockets for braking or fall-retarding of parachute or paraglider type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/006—Explosive bolts; Explosive actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
    • F42B33/06—Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs

Definitions

  • the invention relates to a cutting device for separating at least two modules, which are connected to each other via a mechanical connection.
  • the invention relates to a cutting system for separating a braking system from an ammunition.
  • the ammunition may in particular be a submunition for generating a decoy target.
  • Submunitions must be separated from the actual carrier, such as a rocket, after a delay time, typically programmed at launch. In this separation, the submunition is accelerated. However, the resulting speed is too high for the impact and stability of the decoy itself. Therefore, the submunition must be braked to a defined speed. In order to ensure this deceleration, the submunition is decelerated by a brake parachute before full deployment. This brake parachute must be separated after a predetermined time from the overall system submunition, so that the decoy is not slowed down too much. The separation takes over in practice a cutting device.
  • This designed as a rope and wire cutting device cutting device separates a string, for example made of aramid fiber after about 0.6 seconds after release of the cutting device.
  • the time is variably adjustable by means of a preferably pyrotechnic delay element.
  • the type of medium to be separated is given.
  • the efficiency of the Schneideinheim- tion is adjustable, for example, by different pyrotechnic sets, different blade material and different blade geometry.
  • Such ammunition is shown in DE 87 1 1 922 U1.
  • a cassette part is separated together with a brake parachute.
  • Another ammunition with a brake parachute is described in DE 196 44 380 A1.
  • a separator is involved, which consists mainly of a guided in a tightly clamped cylinder piston with preferably sharp edge.
  • the cable is firmly routed in a protective tube connected to a primer to the tip of the propellant lighter and further routed to the bullet tail.
  • We pass the cable in the upper area of the cylinder through a hole perpendicular to the direction of acceleration. When moving the piston forward, the cable is then separated by the sharp edge.
  • the invention has the object to show a cutting device that reliably ensures separation of at least two interconnected via a mechanical connection assemblies even under harsh environmental conditions.
  • the invention is based on the idea to dispense with the principle of stored energy and to tension a firing pin via a compression spring by means of the braking energy of a brake parachute. From a defined tensile force of the Bremsfallholds the firing pin is released. This firing pin beats on a primer, which initiates a pyrotechnic delay set. After the delay set has blown, the cutter is activated. This is done, for example, by igniting the actual charge of the cutting device. The charge should be high-energy material.
  • the cutting device for this purpose comprises at least one pyrotechnic charge for generating a gas pressure, which then ensures that a mechanical cutting element of the cutting device causes the separation.
  • the advantage of such a constructed cutting device is that the cutting device can do without a previously stored energy.
  • the functional chain of the cutting device is based on a purely mechanical principle. Energy for igniting the pyrotechnic sets is added to the system ammunition by the deceleration effect of the brake parachute. Furthermore, the cutting device is insensitive to electrostatic discharge and electromagnetic interference, since only pyrotechnic sentences are used.
  • a high gas volume is suddenly generated.
  • This gas volume accelerates a cutting element, e.g. a chisel, a cutting device accordingly.
  • the chisel is held in position until it accelerates over a shear pin until a certain amount of gas has been generated and the associated pressure is correspondingly high in order to shear off the shear pin as well.
  • the bit moves at high speed along a guide at the end of which a joint to be cut is guided.
  • the chisel meets this connection and strikes with this on an underlying disc, as beispielswese a brass disc. This service disconnects the connection.
  • a cutting device with at least one firing pin holder, at least one blocking element, a spring, a firing pin, a percussion cap, a charge, a cutting element, a stop and a shear pin, wherein the at least one blocking element provides a connection between the firing pin holder and the firing pin.
  • the spring is tensioned at a predetermined time, for example by means of the braking energy of a brake parachute. After the firing pin holder has traveled a predetermined path, the at least one blocking element is released. The release leads to a relaxation of the spring, whereby the firing pin is accelerated and at the end strikes the Schlagzündhütchen.
  • the pyrotechnic charge is ignited therein.
  • the delay element is lit, if present. This regulates the delay time. Spark ignitor or delay element ignite another charge.
  • the gas volume generated thereby exerts a pressure on the cutting element.
  • the shear pin is sheared, whereby the cutting element is accelerated axially.
  • the cutting element strikes at high speed, resulting from the acceleration, against the stop and penetrates into this. A connection to be cut, which is guided through an opening in front of the stop, is thereby severed.
  • the use of the aforementioned cutting device is not limited to that in the ammunition.
  • the cutting device can be used in all areas where it is necessary to dispense with electrical or other stored energy for the separation of strings, tapes or the like.
  • the cutting device can also be installed as an emergency system, so as emergency rope cutter in parachute systems in general, the usual cutting mechanism.
  • the emergency system can then come into effect if the actual, eg electrical cutting device fails. Included in the parachute systems are also for people.
  • a use of, for example, protected vehicle cabins is conceivable in which various structures, assemblies, etc. are bound by means of steel cables or the like to the vehicle structure.
  • the firing pin would be stretched separately, with the tensioning of the firing pin should also be possible manually.
  • FIG. 1 in an exploded view, a cutting device according to the invention; Fig. 2-4 assembled the cutting device in a sectional view; Fig. 5 shows an alternative connection possibility.
  • the cutting device 20 comprises a cap 8 , a percussion cap 9 and a centerpiece 10 and a pyrotechnic retardation element 1 1.
  • a thread sealing disc is indicated at 12, a propellant at 13, a chisel at 14 and a stop at 15.
  • the cutter 20 is completed by a shear pin 17 received in a front sleeve 16. By a nut 18 of the shear pin 17 is held in the front sleeve 16.
  • the firing pin holder 1 By means of a pulling force of the firing pin holder 1 is pulled out of the cover 5.
  • the necessary force is set via the spring 6, here as a compression spring.
  • the at least one ball 2 (blocking element) is released.
  • This at least one ball 2 represents the connection between the firing pin holder 1 and the firing pin 7.
  • the connection between the firing pin holder 1 and the firing pin 7 is released.
  • the firing pin 7 On the relaxation of the spring 6, the firing pin 7 is accelerated and strikes at the end of the Schlagzündhütchen 9. By the Impact of the firing pin 7 on the Schlagzündhütchen 9 the pyrotechnic charge is ignited therein.
  • the delay element 1 1 By initiating the pyrotechnic charge in the percussion cap, the delay element 1 1 is lit. This regulates the delay time. The delay time can be set arbitrarily. It can even be 0 seconds.
  • propellant charge 13 After the delay element 1 1 is burned, at the end of another pyrotechnic charge, propellant charge 13, ignited. The gas volume generated thereby exerts a pressure on the cutting element 14, in this case the chisel. From a certain pressure, the shear pin 17 is sheared, whereby the cutting element 14 is accelerated axially. The cutting element 14 strikes at high speed, resulting from the acceleration, against the stop 15 and penetrates into this one. A connection to be cut, which is guided through an opening in front of the stop 15, is thereby severed.
  • Fig. 2 shows the cutting device 20 at the time in which the spring 6 is tensioned and the ball (s) 2 are released.
  • Fig. 3 the time is shown at which the spring 6 is relaxed and the delay element 1 1 is ignited.
  • Fig. 4 again shows the time at which the connection to be cut is severed.
  • Fig. 5 is a variant for hooking the cutting device 20 in a system again.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)
  • Emergency Lowering Means (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Confectionery (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The invention relates to a cutting device (20) comprising at least one firing pin retainer (1), at least one locking element (2), a spring (6), a firing pin (7), a percussion cap (9), a charge (13), a cutting element (14), a stop (15) and a shear pin (17), wherein the at least one locking element (2) provides a connection between the firing pin retainer (1) and the firing pin (7). The spring (6) is compressed. After the firing pin retainer (1) has travelled a predetermined path, the locking element (2) is released. The release results in the spring (6) being released, causing the firing pin (7) to be accelerated and at the end to strike the percussion cap (9). As a result of the firing pin (7) striking the percussion cap (9), the pyrotechnic charge therein is ignited. As a result of the pyrotechnic charge in the percussion cap being initiated, the delay element (11), if provided, is lit. This delay element regulates the delay time. Afterwards, an additional charge (13) is ignited. The gas volume thus generated applies pressure to the cutting element (14). Above a certain pressure the shear pin (17) shears off, causing the cutting element (14) to be axially accelerated. The cutting element (14) strikes the stop (15) at high speed as a result of the acceleration, and penetrates into same. A connection to be cut, which is guided through an opening in front of the stop (15), is thereby severed.

Description

BESCHREIBUNG  DESCRIPTION
Schneideinrichtung cutter
Die Erfindung beschäftigt sich mit einer Schneideinrichtung zum Trennen wenigstens zweier Baugruppen, die über eine mechanische Verbindung miteinander verbunden sind. Die Erfindung betrifft insbesondere ein Schneidsystem für das Trennen eines Bremssystems von einer Munition. Bei der Munition kann es sich insbesondere um eine Submunition zur Erzeugung eines Scheinziels handeln. The invention relates to a cutting device for separating at least two modules, which are connected to each other via a mechanical connection. In particular, the invention relates to a cutting system for separating a braking system from an ammunition. The ammunition may in particular be a submunition for generating a decoy target.
Submunitionen müssen nach einer in der Regel beim Abschuss programmierten Verzögerungszeit vom eigentlichen Träger, wie beispielsweise einer Rakete, separiert werden. Bei dieser Separation wird die Submunition beschleunigt. Die daraus resultierende Geschwindigkeit ist für die Wirkung und die Stabilität des Scheinziels selbst jedoch zu hoch. Daher muss die Submunition auf eine definierte Geschwindigkeit abgebremst werden. Um dieses Abbremsen zu gewährleisten, wird die Submunition vor der vollständigen Entfaltung mittels eines Bremsfallschirms abgebremst. Dieser Bremsfallschirm muss nach einer vorbestimmten Zeit vom Gesamtsystem Submunition abgetrennt werden, damit das Scheinziel nicht zu stark abgebremst wird. Das Abtrennen übernimmt in der Praxis eine Schneideinrichtung. Diese als Seil- und Drahtschneideinrichtung ausgeführte Schneideinrichtung trennt eine Schnur, beispielsweise aus Aramidfaser nach ca. 0,6 Sekunden nach Auslösung der Schneideinrichtung. Die Zeit ist mittels eines bevorzugt pyrotechnischen Verzögerungselements variabel einstellbar. Die Art des zu durchtrennenden Mediums ist gegeben. Die Leistungsfähigkeit der Schneideinreich- tung ist einstellbar, beispielsweise durch unterschiedliche pyrotechnische Sätze, unterschiedliches Klingenmaterial und unterschiedliche Klingengeometrie. Durch das Trennen wird der Bremsfallschirm abgeworfen und der Hauptfallschirm das Scheinziel aktiviert. Submunitions must be separated from the actual carrier, such as a rocket, after a delay time, typically programmed at launch. In this separation, the submunition is accelerated. However, the resulting speed is too high for the impact and stability of the decoy itself. Therefore, the submunition must be braked to a defined speed. In order to ensure this deceleration, the submunition is decelerated by a brake parachute before full deployment. This brake parachute must be separated after a predetermined time from the overall system submunition, so that the decoy is not slowed down too much. The separation takes over in practice a cutting device. This designed as a rope and wire cutting device cutting device separates a string, for example made of aramid fiber after about 0.6 seconds after release of the cutting device. The time is variably adjustable by means of a preferably pyrotechnic delay element. The type of medium to be separated is given. The efficiency of the Schneideinreich- tion is adjustable, for example, by different pyrotechnic sets, different blade material and different blade geometry. By separating the brake parachute is dropped and the main parachute activated the decoy.
Eine derartige Munition zeigt die DE 87 1 1 922 U1 . Am Ende einer Bremsphase wird ein Kassettenteil zusammen mit einem Bremsfallschirm abgetrennt. Eine weitere Munition mit einem Bremsfallschirm beschreibt die DE 196 44 380 A1 . Aus der DE 10 2005 010 125 A1 ist eine Munition bekannt, die zur Programmierung eine galvanische Leitung, beispielsweise ein Kabel, aufweist. Dieses ist zu einem möglichst frühen Zeitpunkt der Schussentwicklung zu trennen. Dazu ist eine Trennvorrichtung eingebunden, die hauptsächlich aus einem in einem fest eingespannten Zylinder geführten Kolben mit bevorzugt scharfer Kante besteht. Das Kabel wird fest in einem mit einem Treibladungsanzünder verbundenen Schutzrohr zur Spitze des Treibladungsanzünders geführt und weiter zum Geschossheck verlegt. Dabei wir das Kabel im oberen Bereich des Zylinders durch eine quer zur Beschleunigungsrichtung liegende Bohrung geführt. Beim Bewegen des Kolbens nach vorne wird dann das Kabel durch die scharfe Kante getrennt. Such ammunition is shown in DE 87 1 1 922 U1. At the end of a braking phase, a cassette part is separated together with a brake parachute. Another ammunition with a brake parachute is described in DE 196 44 380 A1. From DE 10 2005 010 125 A1 an ammunition is known, which has a galvanic line, for example a cable for programming. This is to be separated at the earliest possible time of the shot development. For this purpose, a separator is involved, which consists mainly of a guided in a tightly clamped cylinder piston with preferably sharp edge. The cable is firmly routed in a protective tube connected to a primer to the tip of the propellant lighter and further routed to the bullet tail. We pass the cable in the upper area of the cylinder through a hole perpendicular to the direction of acceleration. When moving the piston forward, the cable is then separated by the sharp edge.
In der Praxis gibt es neben derartigen mechanischen Schneideinrichtungen unterschiedliche elektrische Seilschneider, die alle auf dem Prinzip gespeicherter Energie wirken. Nachteilig hierbei ist jedoch, dass die Einsatzdauer auf das Speichermedium beschränkt ist. Bei mechanischen Schneideinrichtungen wäre das Speichermedium, beispielsweise vorgespannte Federn, bei elektrischen Schneideinrichtungen, beispielsweise Batterien. Insbesondere bei elektrischen Schneideinrichtungen sind diese gegenüber elektromagnetischer Störeinstrahlung und elektrostatischer Entladung sehr empfindlich. Diese genannten Einflussfaktoren stellen für Schneideinrichtungen basieren auf einer elektrischen Zündpille / elektrischen Brückenzünder ein Risiko in der Funktionskette dar. Durch Störeinstrahlung sowie elektrostatischer Entladungen können diese unbeabsichtigt zur Umsetzung gebracht werden. In practice, in addition to such mechanical cutting devices, there are various electric rope cutters, all of which act on the principle of stored energy. The disadvantage here, however, is that the duration of use is limited to the storage medium. In mechanical cutting devices, the storage medium, such as biased springs, would be electrical cutters, such as batteries. In particular, in electrical cutting devices these are very sensitive to electromagnetic interference and electrostatic discharge. These factors mentioned represent a risk in the functional chain for cutting devices based on an electric squib / electric bridge igniter. By interference and electrostatic discharges, these can be unintentionally brought to implementation.
Hier stellt sich die Erfindung die Aufgabe, eine Schneidvorrichtung aufzuzeigen, die auch unter harten Umweltbedingungen zuverlässig ein Trennen wenigstens zweier miteinander über eine mechanische Verbindung verbundenen Baugruppen gewährleistet. Here, the invention has the object to show a cutting device that reliably ensures separation of at least two interconnected via a mechanical connection assemblies even under harsh environmental conditions.
Gelöst wird die Aufgabe durch die Merkmale des Patentanspruchs 1 . Vorteilhafte Ausgestaltungen finden sich in den Unteransprüchen wieder. The problem is solved by the features of claim 1. Advantageous embodiments can be found in the subclaims again.
Der Erfindung liegt die Idee zugrunde, auf das Prinzip der gespeicherten Energie zu verzichten und mittels der Bremsenergie eines Bremsfallschirms einen Schlagbolzen über eine Druckfeder zu spannen. Ab einer definierten Zugkraft des Bremsfallschirms wird der Schlagbolzen freigegeben. Dieser Schlagbolzen schlägt dabei auf ein Anzündhütchen, das einen pyrotechnischen Verzögerungssatz initiiert. Nachdem der Verzögerungssatz durchgebrannt ist, wird die Schneideinrichtung aktiviert. Das erfolgt beispielsweise durch Zünden der eigentlichen Ladung der Schneideinrichtung. Dabei sollte es sich bei der Ladung um hochenergetisches Material handeln. Die Schneidvorrichtung umfasst dazu wenigstens eine pyrotechnische Ladung zum Erzeugen eines Gasdrucks, der dann dafür sorgt, dass ein mechanisches Schneidelement der Schneideinrichtung die Trennung bewirkt. Der Vorteil einer derartig aufgebauten Schneideinrichtung besteht darin, dass die Schneideinrichtung ohne eine zuvor gespeicherte Energie auskommen kann. Die Funktionskette der Schneideinrichtung basiert auf einem rein mechanischen Prinzip. Energie zur Zündung der pyrotechnischen Sätze wird dem System Munition durch die Verzögerungswirkung des Bremsfallschirms hinzugefügt. Des Weiteren ist die Schneideinrichtung unempfindlich gegenüber elektrostatischer Entladung sowie elektromagnetischer Störstrahlen, da nur pyrotechnische Sätze zum Einsatz kommen. The invention is based on the idea to dispense with the principle of stored energy and to tension a firing pin via a compression spring by means of the braking energy of a brake parachute. From a defined tensile force of the Bremsfallschirms the firing pin is released. This firing pin beats on a primer, which initiates a pyrotechnic delay set. After the delay set has blown, the cutter is activated. This is done, for example, by igniting the actual charge of the cutting device. The charge should be high-energy material. The cutting device for this purpose comprises at least one pyrotechnic charge for generating a gas pressure, which then ensures that a mechanical cutting element of the cutting device causes the separation. The advantage of such a constructed cutting device is that the cutting device can do without a previously stored energy. The functional chain of the cutting device is based on a purely mechanical principle. Energy for igniting the pyrotechnic sets is added to the system ammunition by the deceleration effect of the brake parachute. Furthermore, the cutting device is insensitive to electrostatic discharge and electromagnetic interference, since only pyrotechnic sentences are used.
Durch Abbrand der Ladung wird schlagartig ein hohes Gasvolumen erzeugt. Dieses Gasvolumen beschleunigt ein Schneidelement, z.B. einen Meißel, einer Schneideinrichtung entsprechend. Der Meißel wird bis zu seiner Beschleunigung über einen Scherstift so lange in Position gehalten, bis eine bestimmte Menge an Gas erzeugt wurde und der damit einhergehende Druck entsprechend hoch ist, um auch den Scherstift abscheren zu können. Nachdem der Scherstift geschert wurde, bewegt sich der Meißel mit hoher Geschwindigkeit entlang einer Führung, an dessen Ende eine zu trennende Verbindung geführt ist. Der Meißel trifft auf diese Verbindung und schlägt mit dieser auf eine dahinterliegende Scheibe, wie beispielswese eine Messingscheibe. Bei diesem Aufschlag wird die Verbindung getrennt. By burning off the charge, a high gas volume is suddenly generated. This gas volume accelerates a cutting element, e.g. a chisel, a cutting device accordingly. The chisel is held in position until it accelerates over a shear pin until a certain amount of gas has been generated and the associated pressure is correspondingly high in order to shear off the shear pin as well. After the shear pin has been sheared, the bit moves at high speed along a guide at the end of which a joint to be cut is guided. The chisel meets this connection and strikes with this on an underlying disc, as beispielswese a brass disc. This service disconnects the connection.
Vorgeschlagen wird eine Schneideinrichtung mit zumindest einem Schlagbolzenhalter, wenigstens einem Sperrelement, einer Feder, einem Schlagbolzen, einem Schlagzündhütchen, einer Ladung, einem Schneidelement, einem Anschlag und einem Scherstift, wobei das wenigstens eine Sperrelement für eine Verbindung zwischen dem Schlagbolzenhalter und dem Schlagbolzen sorgt. Die Feder wird zu einem vorbestimmten Zeitpunkt gespannt, beispielsweise mittels der Bremsenergie eines Bremsfallschirms. Nachdem der Schlagbolzenhalter einen vorbestimmten Weg zurückgelegt hat, wird das wenigstens eine Sperrelement freigegeben. Die Freigabe führt zu einem Entspannen der Feder, wodurch der Schlagbolzen beschleunigt wird und am Ende auf das Schlagzündhütchen aufschlägt. Durch den Einschlag des Schlagbolzens auf das Schlagzündhütchen wird der pyrotechnische Satz darin gezündet. Durch Initiierung des pyrotechnischen Satzes im Schlagzündhütchen wird, wenn vorhanden, das Verzögerungselement angezündet. Dieses regelt dabei die Verzögerungszeit. Schlagzündhütchen oder Verzögerungselement entzünden eine weitere Ladung. Das dadurch erzeugte Gasvolumen übt einen Druck auf das Schneidelement aus. Ab einem gewissen Druck wird der Scherstift geschert, wodurch das Schneidelement axial beschleunigt wird. Das Schneidelement schlägt bei hoher Geschwindigkeit, resultierend aus der Beschleunigung, gegen den Anschlag und dringt dabei in diesen ein. Eine zu schneidende Verbindung, welche durch eine Öffnung vor dem Anschlag geführt ist, wird dabei durchtrennt. Der Einsatz der vorgenannten Schneideinrichtung ist nicht auf die in der Munition begrenzt. Die Schneideinrichtung kann in allen Bereichen eingesetzt werden, wo es erforderlich ist, auf elektrische oder sonstige gespeicherter Energie zum Trennen von Schnüren, Bändern oder ähnlichem zu verzichten. So kann die Schneideinrichtung auch als Notsystem, also als Notseilschneider in Fallschirmsystemen generell, zum üblichen Schneidmechanismus installiert werden. Das Notsystem kann dann zur Wirkung kommen, wenn die eigentliche, z.B. elektrische Schneideinrichtung versagt. Von den Fallschirmsystemen umfasst sind auch die für Personen. Proposed is a cutting device with at least one firing pin holder, at least one blocking element, a spring, a firing pin, a percussion cap, a charge, a cutting element, a stop and a shear pin, wherein the at least one blocking element provides a connection between the firing pin holder and the firing pin. The spring is tensioned at a predetermined time, for example by means of the braking energy of a brake parachute. After the firing pin holder has traveled a predetermined path, the at least one blocking element is released. The release leads to a relaxation of the spring, whereby the firing pin is accelerated and at the end strikes the Schlagzündhütchen. By the impact of the firing pin on the Schlagzündhütchen the pyrotechnic charge is ignited therein. By initiating the pyrotechnic charge in the percussion cap, the delay element is lit, if present. This regulates the delay time. Spark ignitor or delay element ignite another charge. The gas volume generated thereby exerts a pressure on the cutting element. After a certain pressure, the shear pin is sheared, whereby the cutting element is accelerated axially. The cutting element strikes at high speed, resulting from the acceleration, against the stop and penetrates into this. A connection to be cut, which is guided through an opening in front of the stop, is thereby severed. The use of the aforementioned cutting device is not limited to that in the ammunition. The cutting device can be used in all areas where it is necessary to dispense with electrical or other stored energy for the separation of strings, tapes or the like. Thus, the cutting device can also be installed as an emergency system, so as emergency rope cutter in parachute systems in general, the usual cutting mechanism. The emergency system can then come into effect if the actual, eg electrical cutting device fails. Included in the parachute systems are also for people.
Auch ein Einsatz an beispielsweise geschützten Fahrzeugkabinen ist denkbar, bei denen diverse Aufbauten, Baugruppen etc. mittels Stahlseilen oder ähnlichem an die Fahrzeugstruktur gebunden sind. Hier wäre der Schlagbolzen separat zu spannen, wobei das Spannen des Schlagbolzens auch manuell möglich sein sollte. A use of, for example, protected vehicle cabins is conceivable in which various structures, assemblies, etc. are bound by means of steel cables or the like to the vehicle structure. Here, the firing pin would be stretched separately, with the tensioning of the firing pin should also be possible manually.
Anhand eines Ausführungsbeispiels mit Zeichnung soll die Erfindung näher erläutert werden. Es zeigt: Reference to an embodiment with drawing, the invention will be explained in more detail. It shows:
Fig. 1 in einer Explosivdarstellung eine Schneideinrichtung gemäß der Erfindung; Fig. 2-4 die Schneideinrichtung zusammengebaut in einer Schnittdarstellung; Fig. 5 eine alternative Anbindungsmöglichkeit. Fig. 1 in an exploded view, a cutting device according to the invention; Fig. 2-4 assembled the cutting device in a sectional view; Fig. 5 shows an alternative connection possibility.
In Fig. 1 dargestellt ist eine Schneideinrichtung 20 mit einem Schlagbolzenhalter 1 , wenigstens einer Kugel 2, zwei O-Ringen 3, 4 als Dichtringe, einem Deckel 5 sowie einer Feder 6 und einem Schlagbolzen 7. Des Weiteren umfasst die Schneideinrichtung 20 eine Kappe 8, ein Schlagzündhütchen 9 sowie ein Mittelstück 10 und ein pyrotechnisches Verzögerungselement 1 1 . Eine Gewindedichtscheibe ist mit 12, eine Treibladung mit 13, ein Meißel mit 14 und ein Anschlag mit 15 gekennzeichnet. Vervollständigt wird die Schneideinrichtung 20 durch einen Scherstift 17, der in einer Vorderhülse 16 aufgenommen ist. Durch eine Übermutter 18 wird der Scherstift 17 in der Vorderhülse 16 gehalten. 1 shows a cutting device 20 with a firing pin holder 1, at least one ball 2, two O-rings 3, 4 as sealing rings, a cover 5 and a spring 6 and a firing pin 7. Furthermore, the cutting device 20 comprises a cap 8 , a percussion cap 9 and a centerpiece 10 and a pyrotechnic retardation element 1 1. A thread sealing disc is indicated at 12, a propellant at 13, a chisel at 14 and a stop at 15. The cutter 20 is completed by a shear pin 17 received in a front sleeve 16. By a nut 18 of the shear pin 17 is held in the front sleeve 16.
Die Funktionsweise ist wie folgt: The operation is as follows:
Mittels einer Zugkraft wird der Schlagbolzenhalter 1 aus dem Deckel 5 herausgezogen. Die dazu notwendige Kraft wird über die Feder 6, hier als Druckfeder, eingestellt. Nachdem der Schlagbolzenhalter 1 einen vorbestimmten Weg zurückgelegt hat, wird die wenigstens eine Kugel 2 (Sperrelement) freigegeben. Diese wenigstens eine Kugel 2 stellt die Verbindung zwischen dem Schlagbolzenhalter 1 und dem Schlagbolzen 7 dar. Mit Freigabe der Kugel(n) 2 wird die Verbindung zwischen dem Schlagbolzenhalter 1 und dem Schlagbolzen 7 aufgehoben. Das führt zu einem Entspannen der Feder 6. Über die Entspannung der Feder 6 wird der Schlagbolzen 7 beschleunigt und schlägt am Ende auf das Schlagzündhütchen 9. Durch den Einschlag des Schlagbolzens 7 auf das Schlagzündhütchen 9 wird der pyrotechnische Satz darin gezündet. Durch Initiierung des pyrotechnischen Satzes im Schlagzündhütchen wird das Verzögerungselement 1 1 angezündet. Dieses regelt dabei die Verzögerungszeit. Die Verzögerungszeit kann beliebig eingestellt werden. Sie kann sogar 0 Sekunden betragen. Nachdem das Verzögerungselement 1 1 durchgebrannt ist, wird an dessen Ende ein weiterer pyrotechnischer Satz, Treibladung 13, entzündet. Das dadurch erzeugte Gasvolumen übt einen Druck auf das Schneidelement 14, hier den Meißel, aus. Ab einem gewissen Druck wird der Scherstift 17 geschert, wodurch das Schneidelement 14 axial beschleunigt wird. Das Schneidelement 14 schlägt bei hoher Geschwindigkeit, resultierend aus der Beschleunigung, gegen den Anschlag 15 und dringt dabei in diesen ein. Eine zu schneidende Verbindung, welche durch eine Öffnung vor dem Anschlag 15 geführt ist, wird dabei durchtrennt. By means of a pulling force of the firing pin holder 1 is pulled out of the cover 5. The necessary force is set via the spring 6, here as a compression spring. After the firing pin holder 1 has traveled a predetermined path, the at least one ball 2 (blocking element) is released. This at least one ball 2 represents the connection between the firing pin holder 1 and the firing pin 7. With release of the ball (s) 2, the connection between the firing pin holder 1 and the firing pin 7 is released. This leads to a relaxation of the spring 6. On the relaxation of the spring 6, the firing pin 7 is accelerated and strikes at the end of the Schlagzündhütchen 9. By the Impact of the firing pin 7 on the Schlagzündhütchen 9 the pyrotechnic charge is ignited therein. By initiating the pyrotechnic charge in the percussion cap, the delay element 1 1 is lit. This regulates the delay time. The delay time can be set arbitrarily. It can even be 0 seconds. After the delay element 1 1 is burned, at the end of another pyrotechnic charge, propellant charge 13, ignited. The gas volume generated thereby exerts a pressure on the cutting element 14, in this case the chisel. From a certain pressure, the shear pin 17 is sheared, whereby the cutting element 14 is accelerated axially. The cutting element 14 strikes at high speed, resulting from the acceleration, against the stop 15 and penetrates into this one. A connection to be cut, which is guided through an opening in front of the stop 15, is thereby severed.
Die Fig. 2 zeigt die Schneideinrichtung 20 zum Zeitpunkt, in dem die Feder 6 gespannt ist und die Kugel(n) 2 freigegeben werden. In Fig. 3 ist der Zeitpunkt dargestellt, zu dem die Feder 6 entspannt ist und das Verzögerungselement 1 1 gezündet wird. Fig. 4 wiederum stellt den Zeitpunkt nach, bei welchem die zu schneidende Verbindung durchtrennt wird. Fig. 2 shows the cutting device 20 at the time in which the spring 6 is tensioned and the ball (s) 2 are released. In Fig. 3, the time is shown at which the spring 6 is relaxed and the delay element 1 1 is ignited. Fig. 4 again shows the time at which the connection to be cut is severed.
In Fig. 5 findet sich eine Variante zum Einhängen der Schneideinrichtung 20 in ein System wieder. In Fig. 5 is a variant for hooking the cutting device 20 in a system again.

Claims

Patentansprüche claims
1 . Schneideinrichtung (20), gekennzeichnet durch zumindest einen Schlagbolzenhalter (1 ), wenigstens ein Sperrelement (2), wenigstens eine Feder (6), zumindest einen Schlagbolzen (7), ein Schlagzündhütchen (9), eine Ladung (13), ein Schneidelement (14), einen Anschlag (15) und einen Scherstift (17), wobei das wenigstens eine Sperrelement (2) für eine Verbindung zwischen dem Schlagbolzenhalter (1 ) und dem Schlagbolzen (7) sorgt. 1 . Cutting device (20), characterized by at least one firing pin holder (1), at least one blocking element (2), at least one spring (6), at least one firing pin (7), an impact cap (9), a charge (13), a cutting element ( 14), a stop (15) and a shear pin (17), wherein the at least one locking element (2) provides a connection between the firing pin holder (1) and the firing pin (7).
2. Schneideinrichtung (20) nach Anspruch 1 , dadurch gekennzeichnet, dass ein pyrotechnisches Verzögerungselement (1 1 ) zwischen dem Schlagzündhütchen (9) und der Treibladung (13) angeordnet ist. 2. Cutting device (20) according to claim 1, characterized in that a pyrotechnic retardation element (1 1) between the Schlagzündhütchen (9) and the propellant charge (13) is arranged.
3. Schneideinrichtung (20) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Scherstift (17) in einer Vorderhülse (16) aufgenommen ist. 3. Cutting device (20) according to claim 1 or 2, characterized in that the shear pin (17) is received in a front sleeve (16).
4. Schneideinrichtung (20) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Schneidelement (14) ein Meißel ist. 4. Cutting device (20) according to one of claims 1 to 3, characterized in that the cutting element (14) is a chisel.
5. Munition mit Submunitionen mit einem Bremsfallschirm sowie mit einer Schneideinrichtung (20) nach einem der Ansprüche 1 bis 4 zum Trennen einer mechanischen Verbindung zwischen dem Bremsfallschirm und der Submunition, wobei die mechanische Verbindung in einer Öffnung vor dem Anschlag (15) liegt. 5. Ammunition with submunitions with a brake parachute and with a cutting device (20) according to one of claims 1 to 4 for separating a mechanical connection between the Bremsfallschirm and the submunition, wherein the mechanical connection in an opening in front of the stop (15).
6. Munition nach Anspruch 5, dadurch gekennzeichnet, dass es sich um Wirkmunition zur Erzeugung eines Scheinziels handelt. 6. Ammunition according to claim 5, characterized in that it is ammunition for generating a decoy target.
7. Fallschirmsystem mit einer Schneideinrichtung (20) nach einem der Ansprüche 1 bis 4, wobei eine zu trennende mechanische Verbindung in einer Öffnung vor dem Anschlag (15) liegt. 7. A parachute system with a cutting device (20) according to one of claims 1 to 4, wherein a mechanical connection to be separated in an opening in front of the stop (15).
8. Fahrzeug mit an einer Fahrzeugstruktur über mechanische Verbindungen angebundenen Aufbauten, Baugruppen etc. mit einer Schneideinrichtung (20) nach einem der Ansprüche 1 bis 4, wobei eine zu trennende mechanische Verbindung in einer Öffnung vor dem Anschlag (15) liegt. 8. vehicle with attached to a vehicle structure via mechanical connections structures, assemblies, etc. with a cutting device (20) according to one of claims 1 to 4, wherein a mechanical connection to be separated in an opening in front of the stop (15).
EP18730748.3A 2017-06-22 2018-06-11 Cutting device Withdrawn EP3642556A1 (en)

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DE102017113857.9A DE102017113857A1 (en) 2017-06-22 2017-06-22 cutter
PCT/EP2018/065257 WO2018234071A1 (en) 2017-06-22 2018-06-11 Cutting device

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CA (1) CA3063808C (en)
DE (1) DE102017113857A1 (en)
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CN114963892A (en) * 2021-02-19 2022-08-30 北京九天微星科技发展有限公司 Connecting and unlocking device suitable for multi-satellite separation
CN114029584B (en) * 2021-11-27 2023-01-13 西安北方庆华机电有限公司 Spacing cutterbar

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JP6978522B2 (en) 2021-12-08
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CA3063808A1 (en) 2018-12-27
AU2018286744A1 (en) 2019-12-12
DE102017113857A1 (en) 2018-12-27
CA3063808C (en) 2022-07-12
IL271183B2 (en) 2023-06-01
RU2749254C1 (en) 2021-06-07
WO2018234071A1 (en) 2018-12-27
US20200130073A1 (en) 2020-04-30
KR20200023610A (en) 2020-03-05
SG11201912826SA (en) 2020-01-30

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