EP3475643A1 - Weapon barrel having an internal profile - Google Patents

Weapon barrel having an internal profile

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Publication number
EP3475643A1
EP3475643A1 EP17730744.4A EP17730744A EP3475643A1 EP 3475643 A1 EP3475643 A1 EP 3475643A1 EP 17730744 A EP17730744 A EP 17730744A EP 3475643 A1 EP3475643 A1 EP 3475643A1
Authority
EP
European Patent Office
Prior art keywords
field
radius
weapon
profile
bastion
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.)
Granted
Application number
EP17730744.4A
Other languages
German (de)
French (fr)
Other versions
EP3475643B1 (en
Inventor
Ulrich Keller
Gert Schlenkert
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
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Publication date
Application filed by Rheinmetall Waffe Munition GmbH filed Critical Rheinmetall Waffe Munition GmbH
Priority to HRP20230176TT priority Critical patent/HRP20230176T1/en
Publication of EP3475643A1 publication Critical patent/EP3475643A1/en
Application granted granted Critical
Publication of EP3475643B1 publication Critical patent/EP3475643B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/16—Barrels or gun tubes characterised by the shape of the bore
    • F41A21/18—Grooves-Rifling

Definitions

  • the invention relates to a gun barrel for a firearm, but in particular not restricting a machine gun, with a tube inner profile.
  • the gun barrel with the field-pull profile for heavily loaded weapons is characterized by the fact that the height of the fields to the flanks of the fields decreases by an amount.
  • Tubes for firearms are exposed to significant loads. In addition to the propellant charge gas pressure these are charged during firing through the projectile to be fired. To be precisely guided, this has a larger outer diameter than the inner diameter of the barrel. This excess is degraded during the tube passage by deformation and wear.
  • the inner tube profile of a drawn barrel provides for a precise guidance of the projectile in the tube and also sets the projectile in rotation about its longitudinal axis. This rotational movement, commonly referred to as a twist, is necessary for the stable flight of the projectile outside the weapon barrel.
  • the inner profile is rotating with a certain pitch around the tube axis. The accelerated projectile follows this and rotates with increasing speed around its longitudinal axis.
  • the design of the inner tube profile accordingly influences the interaction of the projectile.
  • a small inner diameter causes a high pressing force of the projectile and ensures appropriate frictional forces.
  • the occurring during pressing sizes such as deformation, friction and wear are coupled together and behave strongly non-linear.
  • the effects of a special inner tube profile are predictable only with great theoretical effort.
  • the internal pipe profiles are the result of empirical approaches.
  • DE 200 02 365 U1 presents a barrel with an inner profile in a combination of pre-existing profiles, polygon and train / field profile, wherein the right-hand spiral edge leading edge is right sharp in the weft direction and the opposite side merges into a polygonal profile and no sharp edges ,
  • US 2008/0120889 A1 describes a method for producing a field-pull profile.
  • Such profiles are designed for a particular bullet type.
  • problems can sometimes occur, such as impermissibly high peak gas pressure, poor precision massive wear of the gun barrel.
  • These are usually coat bullets with lead core.
  • the projectile cores are very soft and thus the entire projectile easily deformable.
  • Hard core bullets with tungsten carbide core are significantly stiffer in construction and cause with polygon runs, i.
  • Weapon tubes with a polygon inner profile a massive increase in tube wear.
  • DE 10 2012 000 686 A1 discloses a weapon barrel with a chromed inner profile to increase the load capacity.
  • the fields of the inner profile are designed as polygons trapezoidal and asymmetrical and are much narrower than the trains.
  • the fields have on one side a relatively long increase in the form of a slope and on the other side a fast descending flank.
  • the chrome plating is such that the chromium layer on the trains is thinner than that on the fields.
  • the invention is based on the idea to obtain a much better contact pressure distribution in order to minimize wear.
  • an inner profile is created, which is characterized indicates that the height of the fields (field height) decreases towards their edges. With the two front surfaces and the flanks, the fields resemble a bastion.
  • Bastionsprofil a much cheaper contact pressure distribution is achieved than in the known inner profiles or field-train profiles.
  • the field flanks albeit in somewhat reduced form, are retained, which in turn are well suited for transmitting the swirl moment. This construction allows the effect of the swirl moment on the field flanks to be spatially separated from the effect of the press-in operation on the surface of the fields.
  • Bastionsprofil designed in this way improves the wear behavior when using hard core projectiles for weapons tubes at high firing cadences, such as in machine guns. Nevertheless, the precise bullet guidance of a normal field-train profile is maintained. Created is a heavy-duty gun barrel.
  • 1 is a sketch-like representation of a 90 ° segment of a not to scale, four-span field-train profile
  • Fig. 3 is a sketchy representation of a greedy strategy.
  • Fig. 1 shows an illustration of a 90 ° segment 1 1 of a four-speed field-train profile 10 of a gun barrel of the prior art, not shown.
  • This segment 11 consists of a traction radius 2 and a smaller field radius 1.
  • the contour of the profile 10 runs in the field 5 or in the train 6 to the respective diameter (radius). The transitions are formed by straight sides 3, the so-called field flanks.
  • the profile 10 is mirror-symmetrical to the bisector 4.
  • Fig. 2 illustrates the derivation of a so-called bastion profile 20 from the field-pull profile 10 according to the prior art for better understanding.
  • the field 25 has flanks 25.3 and 25.4.
  • the height h of the fields 25 decreases towards the flanks 25.3 and 25.4 by an amount 29 out. The determination of this amount is as follows:
  • a circle is constructed so that there is an intersection 22 on the bisector with a field radius.
  • the center M also lies on the bisecting line 23.
  • the radius 27 of the circle is chosen larger than the field radius. This contour is created (constructed) for each field 25, since the respective circle centers are not congruent.
  • the material 28 is removed from the field 25 which lies within the bastion radius 27, ie, between the field radius 1 and the bastion radius 27. As a result, the field 25 only has its nominal height h in the middle, which is outwardly an amount 29 reduced.
  • the maximum bastion radius 27 can be chosen so large that a residual height remains at the field edges, ie the field flanks 3 are not eliminated.
  • Fig. 3 shows a four field / trains exhibiting Bastionsprofil 20 of a gun barrel 30 in a front view.
  • the surface O of the fields 25 consists, in absolute terms, of a single radius. Relative to the nominal field radius, however, surface O ' is retreating (back-swept), resulting in two surfaces 25.1, 25.2 at an obtuse angle to each other (mental). With 26 trains are marked.
  • the center M can also be on the other side of the profile, as shown in Fig. 2a.
  • Bastionsprofil 20 is suitable for or as an inner profile in a heavily used gun barrel, especially a fast-shooting machine gun (machine gun). Of these, weapons systems in the small and medium caliber range are preferably affected.
  • the tube profile can also be used with other tube types.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Telescopes (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention relates to a weapon barrel (30) having a land/groove profile (20) having lands (25) and grooves (26) for highly stressed weapons, wherein the height (h) of the lands (25) decreases towards the flanks (25.3, 25.4) of the lands (25) by an amount (29). As a result, the surface (O') of the lands (25) is formed by two surfaces (25.1, 25.2) which lie at an obtuse angle relative to one another or enclose an obtuse angle.

Description

BESCHREIBUNG  DESCRIPTION
Waffenrohr mit Innenprofil Gun barrel with inner profile
Die Erfindung beschäftigt sich mit einem Waffenrohr für eine Schusswaffe, insbesondere aber nicht einschränkend eines Maschinengewehrs, mit einem Rohrinnenprofil. Das Waffenrohr mit dem Feld-Zug-Profil für hochbeanspruchte Waffen zeichnet sich dadurch aus, dass die Höhe der Felder zu den Flanken der Felder um einen Betrag hin abnimmt. The invention relates to a gun barrel for a firearm, but in particular not restricting a machine gun, with a tube inner profile. The gun barrel with the field-pull profile for heavily loaded weapons is characterized by the fact that the height of the fields to the flanks of the fields decreases by an amount.
Rohre für Schusswaffen sind erheblichen Belastungen ausgesetzt. Neben dem Treibladungsgasdruck werden diese beim Schuss durch das zu verschießende Geschoss belastet. Um präzise geführt zu werden, besitzt dieses einen größeren Außendurchmesser als der Innendurchmesser des Waffenrohrs. Dieses Übermaß wird während des Rohrdurchganges durch Verformung und Verschleiß abgebaut. Das Rohrinnenprofil eines gezogenen Waffenrohrs sorgt für eine präzise Führung des Geschosses im Rohr und versetzt das Geschoss zudem in Rotation um dessen Längsachse. Diese allgemein als Drall bezeichnete Rotationsbewegung ist für den stabilen Flug des Geschosses außerhalb des Waffenrohres notwendig. Das Innenprofil verläuft rotierend mit einer bestimmten Steigung um die Rohrachse. Das beschleunigte Geschoss folgt diesem und rotiert mit zunehmender Geschwindigkeit um seine Längsachse. Die Gestaltung des Rohrinnenprofils beeinflusst dementsprechend die Interaktion des Geschosses. Ein geringer Innendurchmesser bewirkt eine hohe Verpresskraft des Geschosses und sorgt für entsprechende Reibkräfte. Die beim Einpressen auftretenden Größen wie Verformung, Reibleistung und Verschleiß sind untereinander gekoppelt und verhalten sich stark nichtlinear. Dadurch sind die Auswirkungen eines speziellen Rohrinnenprofils nur mit großem theoretischem Aufwand vorhersehbar. Häufig sind die Rohrinnenprofile das Ergebnis empirischer Vorgehensweisen. Tubes for firearms are exposed to significant loads. In addition to the propellant charge gas pressure these are charged during firing through the projectile to be fired. To be precisely guided, this has a larger outer diameter than the inner diameter of the barrel. This excess is degraded during the tube passage by deformation and wear. The inner tube profile of a drawn barrel provides for a precise guidance of the projectile in the tube and also sets the projectile in rotation about its longitudinal axis. This rotational movement, commonly referred to as a twist, is necessary for the stable flight of the projectile outside the weapon barrel. The inner profile is rotating with a certain pitch around the tube axis. The accelerated projectile follows this and rotates with increasing speed around its longitudinal axis. The design of the inner tube profile accordingly influences the interaction of the projectile. A small inner diameter causes a high pressing force of the projectile and ensures appropriate frictional forces. The occurring during pressing sizes such as deformation, friction and wear are coupled together and behave strongly non-linear. As a result, the effects of a special inner tube profile are predictable only with great theoretical effort. Often, the internal pipe profiles are the result of empirical approaches.
Aus der DE 17 03 012 C3 ist ein Drallzugprofil für Geschossläufe mit zwischen Feldern und Zügen liegenden schraubenförmigen Drallflankenflächen bekannt, das sich dadurch auszeichnet, dass die Drallflankenfläche mit dem jeweils am Flankenfuß angelegten Radius einen selbsthemmenden Winkel von etwa 5° bildet. Die DE 1 044 675 B bezieht sich auf ein Drallzugprofil hoher Gasliderung für Geschossläufe, bei dem die Züge durch Kreisbögen vom Zug jeder Flanke zur Höhe des benachbarten Feldes gebildet werden. From DE 17 03 012 C3 a Drallzugprofil for projectile runs lying between fields and trains helical swirl flank surfaces is known, which is characterized in that the swirl flank surface forms a self-locking angle of about 5 ° with each applied to the flank foot radius. DE 1 044 675 B relates to a high tension gas displacement profile for projectile runs, in which the trains are formed by circular arcs from the train of each flank to the height of the adjacent field.
Die DE 200 02 365 U1 präsentiert einen Lauf mit einem Innenprofil in einer Kombination aus bereits bestehenden Profilen, Polygon und Zug/Feldprofil, wobei beim Rechtsdrall die führende Kante in Schussrichtung rechts scharfkantig ist und die gegenüberliegende Seite übergeht in ein Polygonprofil und keine scharfen Kanten aufweist. DE 200 02 365 U1 presents a barrel with an inner profile in a combination of pre-existing profiles, polygon and train / field profile, wherein the right-hand spiral edge leading edge is right sharp in the weft direction and the opposite side merges into a polygonal profile and no sharp edges ,
Weitere Feld-Zug-Profile sind der US 835,482 A, der US 329,303 A, der WO 97/45690 A1 , der US 4,437,251 A sowie der US 4,308,681 A entnehmbar. Further field-pull profiles are the US 835,482 A, US 329,303 A, WO 97/45690 A1, US 4,437,251 A and US 4,308,681 A removable.
Die US 2008/0120889 A1 beschreibt ein Verfahren zu Herstellung eines Feld-Zug-Profils. US 2008/0120889 A1 describes a method for producing a field-pull profile.
Derartige Profile sind für einen bestimmten Geschosstyp ausgelegt. Bei Verwendung einer anderen Munitions- oder Geschosssorte des gleichen Kalibers können zum Teil massive Probleme auftreten, wie unzulässig hohe Spitzengasdrücke, mangelhafte Präzision massiver Verschleiß des Waffenrohres. Dabei handelt es sich in der Regel um Mantelgeschosse mit Bleikern. Trotz derfestigkeitssteigernden Legierungsbestandteile im Hartblei sind die Geschosskerne sehr weich und damit das gesamte Geschoss leicht verformbar. Hartkerngeschosse mit Wolframkarbidkern sind im Aufbau deutlich steifer und verursachen mit Polygonläufen, d.h. Waffenrohren mit einem Polygoninnenprofil, eine massive Zunahme des Rohrverschleißes. Such profiles are designed for a particular bullet type. When using a different type of ammunition or bullet of the same caliber massive problems can sometimes occur, such as impermissibly high peak gas pressure, poor precision massive wear of the gun barrel. These are usually coat bullets with lead core. Despite the strength-enhancing alloy components in hard lead, the projectile cores are very soft and thus the entire projectile easily deformable. Hard core bullets with tungsten carbide core are significantly stiffer in construction and cause with polygon runs, i. Weapon tubes with a polygon inner profile, a massive increase in tube wear.
Die DE 10 2012 000 686 A1 offenbart ein Waffenrohr mit verchromtem Innenprofil zur Erhöhung der Belastbarkeit. Die Felder des Innenprofils sind als Polygone trapezförmig und asymmetrisch ausgeführt und sind wesentlich schmaler als die Züge. Die Felder weisen einseitig einen relativ langen Anstieg in Form einer Steigung und auf der anderen Seite eine schnell absteigende Flanke auf. Die Verchromung ist derart, dass die Chromschicht auf den Zügen dünner als die auf den Feldern ist. DE 10 2012 000 686 A1 discloses a weapon barrel with a chromed inner profile to increase the load capacity. The fields of the inner profile are designed as polygons trapezoidal and asymmetrical and are much narrower than the trains. The fields have on one side a relatively long increase in the form of a slope and on the other side a fast descending flank. The chrome plating is such that the chromium layer on the trains is thinner than that on the fields.
Die Erfindung stellt sich die Aufgabe, ein Rohrinnenprofil aufzuzeigen, das das Verschießen verschiedener Geschosstypen, insbesondere von Mantelgeschossen mit Bleikern und Hartkerngeschossen, ermöglicht. The invention has as its object to show a pipe inner profile, which allows the shooting of different types of bullets, in particular of jacketed bullets with lead cores and hard core bullets.
Gelöst wird die Aufgabe durch die Merkmale des Patentanspruchs 1. Vorteilhafte Ausführungen sind den Unteransprüchen entnehmbar. The object is achieved by the features of claim 1. Advantageous embodiments are the dependent claims.
Der Erfindung liegt die Idee zugrunde, eine wesentlich günstigere Kontaktdruckverteilung zu erlangen, um den Verschleiß zu minimieren. Dazu wird ein Innenprofil geschaffen, das sich dadurch auszeichnet, dass die Höhe der Felder (Feldhöhe) zu deren Rändern hin abnimmt. Mit den beiden Frontflächen und den Flanken ähneln die Felder einer Bastion. Durch das so bezeichnete Bastionsprofil wird eine wesentlich günstigere Kontaktdruckverteilung als bei den bekannten Innenprofilen bzw. Feld-Zug-Profilen erreicht. Neben dem Kontaktdruck werden auch die Reibleistung und die dadurch erzeugte Aufheizung des Waffenrohres verringert. Anders als bei Polygonprofilen bleiben dabei die Feldflanken, wenn auch in etwas reduzierter Form, erhalten, die ihrerseits gut geeignet sind, das Drallmoment zu übertragen. Diese Konstruktion erlaubt die Wirkung des Drallmoments auf die Feldflanken von der Wirkung des Einpressvorgangs auf die Oberfläche der Felder räumlich zu trennen. The invention is based on the idea to obtain a much better contact pressure distribution in order to minimize wear. For this purpose, an inner profile is created, which is characterized indicates that the height of the fields (field height) decreases towards their edges. With the two front surfaces and the flanks, the fields resemble a bastion. By so-called Bastionsprofil a much cheaper contact pressure distribution is achieved than in the known inner profiles or field-train profiles. In addition to the contact pressure and the friction and the heat generated by the weapon barrel are reduced. Unlike polygonal profiles, the field flanks, albeit in somewhat reduced form, are retained, which in turn are well suited for transmitting the swirl moment. This construction allows the effect of the swirl moment on the field flanks to be spatially separated from the effect of the press-in operation on the surface of the fields.
Das derart gestaltete Bastionsprofil verbessert das Verschleißverhalten bei Verwendung von Hartkerngeschossen für Waffenrohre bei hoher Schusskadenz, wie beispielsweise bei Maschinengewehren. Dennoch bleibt die präzise Geschossführung eines normalen Feld-Zug-Profils erhalten. Geschaffen wird ein hochbelastbares Waffenrohr. The Bastionsprofil designed in this way improves the wear behavior when using hard core projectiles for weapons tubes at high firing cadences, such as in machine guns. Nevertheless, the precise bullet guidance of a normal field-train profile is maintained. Created is a heavy-duty gun barrel.
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 eine skizzenartige Darstellung eines 90° Segments eines nicht maßstabsgetreuen, vierzügigen Feld-Zug Profils, 1 is a sketch-like representation of a 90 ° segment of a not to scale, four-span field-train profile,
Fig. 2 eine Ableitung eines Bastionsprofils gemäß der Erfindung, 2 shows a derivation of a bastion profile according to the invention,
Fig. 3 eine skizzenhafte Darstellung eines vierzügigen Bastionsprofils. Fig. 3 is a sketchy representation of a vierzügigen Bastionsprofils.
Fig. 1 zeigt eine Darstellung eines 90° Segments 1 1 eines vierzügigen Feld-Zug-Profils 10 eines nicht näher dargestellten Waffenrohres nach dem Stand der Technik. Dieses Segment 1 1 besteht aus einem Zugradius 2 und einem kleineren Feldradius 1. Die Kontur des Profils 10 läuft im Feld 5 bzw. im Zug 6 auf den jeweiligen Durchmesser (Radius). Die Übergänge werden durch gerade Seiten 3, die sogenannten Feldflanken, gebildet. Das Profil 10 ist spiegelsymmetrisch zur Winkelhalbierenden 4. Fig. 1 shows an illustration of a 90 ° segment 1 1 of a four-speed field-train profile 10 of a gun barrel of the prior art, not shown. This segment 11 consists of a traction radius 2 and a smaller field radius 1. The contour of the profile 10 runs in the field 5 or in the train 6 to the respective diameter (radius). The transitions are formed by straight sides 3, the so-called field flanks. The profile 10 is mirror-symmetrical to the bisector 4.
Fig. 2 stellt die Ableitung eines sogenannten Bastionsprofils 20 aus dem Feld-Zug-Profil 10 nach dem Stand der Technik zum besseren Verständnis dar. Fig. 2 illustrates the derivation of a so-called bastion profile 20 from the field-pull profile 10 according to the prior art for better understanding.
Es zeigt ein 90° Segment 21 . Dieses stellt ein Feld 25 und teilweise einen Zug 26 dar. Das Feld 25 weist Flanken 25.3 sowie 25.4 auf. Die Höhe h der Felder 25 nimmt zu den Flanken 25.3 und 25.4 hin um einen Betrag 29 hin ab. Die Bestimmung dieses Betrages erfolgt wie folgt: It shows a 90 ° segment 21. This represents a field 25 and partially a train 26. The field 25 has flanks 25.3 and 25.4. The height h of the fields 25 decreases towards the flanks 25.3 and 25.4 by an amount 29 out. The determination of this amount is as follows:
Ein Kreis wird so konstruiert, dass sich ein Schnittpunkt 22 auf der Winkelhalbierenden mit einem Feldradius ergibt. Der Mittelpunkt M liegt ebenfalls auf der Winkelhalbierenden 23. Der Radius 27 des Kreises wird größer als der Feldradius gewählt. Diese Kontur wird für jedes Feld 25 geschaffen (konstruiert), da die jeweiligen Kreismittelpunkte nicht deckungsgleich sind. Das Material 28 wird vom Feld 25 entfernt, das innerhalb des Bastionsradius 27 liegt, d.h., zwischen dem Feldradius 1 und dem Bastionsradius 27. Als Ergebnis hat das Feld 25 nur in der Mitte seine nominale Höhe h, die sich nach außen hin um einen Betrag 29 verringert. Maximal kann der Bastionsradius 27 so groß gewählt werden, dass an den Feldrändern eine Resthöhe verbleibt, also die Feldflanken 3 nicht eliminiert werden. A circle is constructed so that there is an intersection 22 on the bisector with a field radius. The center M also lies on the bisecting line 23. The radius 27 of the circle is chosen larger than the field radius. This contour is created (constructed) for each field 25, since the respective circle centers are not congruent. The material 28 is removed from the field 25 which lies within the bastion radius 27, ie, between the field radius 1 and the bastion radius 27. As a result, the field 25 only has its nominal height h in the middle, which is outwardly an amount 29 reduced. The maximum bastion radius 27 can be chosen so large that a residual height remains at the field edges, ie the field flanks 3 are not eliminated.
Fig. 3 zeigt ein vier Feld/ Züge aufweisendes Bastionsprofil 20 eines Waffenrohres 30 in einer Vorderansicht. Die Oberfläche O der Felder 25 besteht, absolut gesehen, aus einem einzigen Radius. Relativ zum nominalen Feldradius ist die Oberfläche O' aber zurückeilend (zurückgefeilt), wodurch sich zwei Flächen 25.1 , 25.2 in einem stumpfen Winkel zueinander ergeben (gedanklich). Mit 26 sind Züge gekennzeichnet. Fig. 3 shows a four field / trains exhibiting Bastionsprofil 20 of a gun barrel 30 in a front view. The surface O of the fields 25 consists, in absolute terms, of a single radius. Relative to the nominal field radius, however, surface O ' is retreating (back-swept), resulting in two surfaces 25.1, 25.2 at an obtuse angle to each other (mental). With 26 trains are marked.
Für die Wahl des Bastionsradius 27 existieren folgende Grenzfälle: For the choice of the bastion radius 27, the following borderline cases exist:
1. Wenn der Bastionsradius gleich dem Feldradius ist, wird kein Material entfernt. Man erhält ein klassisches Feld-Zug-Profil. 1. If the bastion radius equals the field radius, no material is removed. You get a classic field-pull profile.
2. Wenn der Bastionsradius so groß gewählt wird, dass die Feldflanken vollständig entfernt werden, erhält man eine Art Polygonprofil.  2. If the bastion radius is chosen so large that the field flanks are completely removed, you get a kind of polygonal profile.
Bei einem großen Verhältnis von Zug- zu Feldradius und / oder kleinen Feldbreiten infolge einer großen Anzahl von Zügen kann der Fall auftreten, dass auch bei einem unendlich großen Bastionsradius (einer Geraden) die Feldflanken teilweise erhalten bleiben und damit die Definitionsgrenze des Bastionsprofils nicht erreicht wird. In diesem Fall kann der Mittelpunkt M auch auf der anderen Seite des Profils liegen, wie in Fig. 2a dargestellt. With a large ratio of tensile to field radius and / or small field widths due to a large number of trains, it can happen that even with an infinitely large bastion radius (a straight line), the field flanks are partially preserved and thus the definition boundary of the bastion profile is not reached , In this case, the center M can also be on the other side of the profile, as shown in Fig. 2a.
Ein derartiges Bastionsprofil 20 eignet sich für bzw. als Innenprofil in einem hoch beanspruchten Waffenrohr, insbesondere einer schnellschießenden Maschinenwaffe (Maschinenkanone). Hiervon sind bevorzugt Waffensysteme im klein- und mittleren Kaliberbereich betroffen. Das Rohrprofil ist aber auch bei anderen Rohrtypen einsetzbar. Such Bastionsprofil 20 is suitable for or as an inner profile in a heavily used gun barrel, especially a fast-shooting machine gun (machine gun). Of these, weapons systems in the small and medium caliber range are preferably affected. The tube profile can also be used with other tube types.

Claims

Patentansprüche claims
1 . Waffenrohr (30) mit einem Feld-Zug-Profil (20) mit Feldern (25) und Zügen (26) für hochbeanspruchte Waffen, dadurch gekennzeichnet, dass die Höhe (h) der Felder (25) zu den Flanken (25.3, 25.4) der Felder (25) hin abnimmt. 1 . Weapon tube (30) with a field-pull profile (20) with fields (25) and trains (26) for highly stressed weapons, characterized in that the height (h) of the fields (25) to the flanks (25.3, 25.4) the fields (25) decreases.
2. Waffenrohr (30) nach Anspruch 1 , dadurch gekennzeichnet, dass die Höhe (h) um einen Betrag (29) hin abnimmt, wobei die Feldflanken (3) in reduzierter Form erhalten bleiben. 2. weapon barrel (30) according to claim 1, characterized in that the height (h) by an amount (29) decreases, the field flanks (3) are retained in a reduced form.
3. Waffenrohr (30) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Oberfläche (O ) der Felder (25) durch zwei Flächen (25.1 , 25.2) in einem stumpfen Winkel gebildet wird. 3. weapon barrel (30) according to claim 1 or 2, characterized in that the surface (O) of the fields (25) by two surfaces (25.1, 25.2) is formed at an obtuse angle.
4. Verfahren zur Schaffung eines Feld-Zug-Profils (20) eines Waffenrohres (30) nach einem der Ansprüche 1 bis 3, gekennzeichnet durch die Schritte: 4. A method for creating a field-train profile (20) of a weapon barrel (30) according to any one of claims 1 to 3, characterized by the steps:
• Festlegen eines Kreises, sodass sich ein Schnittpunkt (22) auf der Winkelhalbierenden mit einem Feldradius (1 ) ergibt, wobei  • Setting a circle, so that an intersection point (22) results on the bisector with a field radius (1), wherein
• zur Schaffung der Kontur des Feldes (25) der Radius (27) des Bastionskreises größer als der Feldradius (1 ) gewählt wird und der Mittelpunkt (M) ebenfalls auf der Winkelhalbierenden (23) liegt, und  • to create the contour of the field (25) the radius (27) of the bastion circle is greater than the field radius (1) is selected and the center (M) is also on the bisector (23), and
• für jedes Feld (25) diese Kontur geschaffen wird, sodass jedes Feld (25) nur in der Mitte seine nominale Höhe (h) aufweist und zu den Flanken (25.3, 25.4) hin abnimmt,  For each field (25), this contour is created so that each field (25) has its nominal height (h) only in the middle and decreases towards the flanks (25.3, 25.4),
• Entfernen eines Materials (28) vom Feld (25), das innerhalb des Bastionsradius (27) zwischen dem Feldradius (1 ) und dem Bastionsradius (27) liegt.  • removing a material (28) from the panel (25) located within the bastion radius (27) between the field radius (1) and the bastion radius (27).
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass der Bastionsradius (27) so groß gewählt wird, dass die Feldflanken (3) nicht vollständig eliminiert werden. 5. The method according to claim 4, characterized in that the bastion radius (27) is chosen so large that the field edges (3) are not completely eliminated.
6. Waffe mit einem Waffenrohr (30) nach einem der Ansprüche 1 bis 3. 6. weapon with a weapon barrel (30) according to one of claims 1 to 3.
7. Waffe nach Anspruch 5, dadurch gekennzeichnet, dass die Waffe eine Waffe im Klein- und Mittelkaliberbereich ist. 7. A weapon according to claim 5, characterized in that the weapon is a weapon in the small and medium caliber range.
EP17730744.4A 2016-06-23 2017-06-09 Weapon barrel having a rifled profile Active EP3475643B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20230176TT HRP20230176T1 (en) 2016-06-23 2017-06-09 Weapon barrel having a rifled profile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016111571.1A DE102016111571A1 (en) 2016-06-23 2016-06-23 Gun barrel with inner profile
PCT/EP2017/064153 WO2017220348A1 (en) 2016-06-23 2017-06-09 Weapon barrel having an internal profile

Publications (2)

Publication Number Publication Date
EP3475643A1 true EP3475643A1 (en) 2019-05-01
EP3475643B1 EP3475643B1 (en) 2022-11-23

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EP (1) EP3475643B1 (en)
DE (1) DE102016111571A1 (en)
HR (1) HRP20230176T1 (en)
PL (1) PL3475643T3 (en)
WO (1) WO2017220348A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018123278A1 (en) 2018-09-21 2020-03-26 Rheinmetall Waffe Munition Gmbh Process for producing a heat-resistant weapon barrel provided with a swirl profile
US11609057B2 (en) * 2020-12-15 2023-03-21 Carl E Caudle Circumferential rifling

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US329303A (en) 1885-10-27 fosbery
US835482A (en) 1903-08-08 1906-11-06 Peter Mulock Rifling.
US1335444A (en) * 1916-06-26 1920-03-30 Arnold B Lashley Rifling for firearms
DE1044675B (en) 1955-06-11 1958-11-20 Karl Burgsmueller Twist profile high gas liner for floor run
CH536478A (en) * 1970-06-18 1973-04-30 Rheinmetall Gmbh Barrel for rifles and pistols with continuous fields and lines
GB1409331A (en) * 1973-03-30 1975-10-08 Devence Secreteary Of State Fo Rifling
DE2738783A1 (en) * 1977-08-27 1979-03-01 Langbein Pfanhauser Werke Ag Firearm for spinning projectile - has spiral ribs or grooves formed electrolytically in smooth-walled barrel
US4308681A (en) 1980-03-14 1982-01-05 Gorman Richard M Progressive ratchet rifling in a full gain twist
US4437251A (en) 1980-03-14 1984-03-20 Gorman Richard M Full gain twist ratchet rifling
AU3192697A (en) 1996-05-31 1998-01-05 Ildar Ibragimov Rifled barrel
IT1293616B1 (en) * 1997-07-16 1999-03-08 Guido Chiariello PROCESS FOR THE FORMATION OF FIREARM RODS OR THROWING DEVICES IN GENERAL
DE20002365U1 (en) 2000-02-10 2000-05-31 Spindler Wilhelm Gun barrel with a new barrel inner profile
US20080120889A1 (en) 2006-07-03 2008-05-29 Animesh Bose Processing of rifled gun barrels from advanced materials
DE102012000686A1 (en) 2012-01-17 2013-07-18 Rheinmetall Waffe Munition Gmbh Gun barrel with chromed inner profile

Also Published As

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PL3475643T3 (en) 2023-04-24
HRP20230176T1 (en) 2023-03-31
EP3475643B1 (en) 2022-11-23
DE102016111571A1 (en) 2017-12-28
WO2017220348A1 (en) 2017-12-28

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