EP3475643B1 - Canon à profil rayé - Google Patents

Canon à profil rayé Download PDF

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Publication number
EP3475643B1
EP3475643B1 EP17730744.4A EP17730744A EP3475643B1 EP 3475643 B1 EP3475643 B1 EP 3475643B1 EP 17730744 A EP17730744 A EP 17730744A EP 3475643 B1 EP3475643 B1 EP 3475643B1
Authority
EP
European Patent Office
Prior art keywords
profile
field
weapon
radius
barrel
Prior art date
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Active
Application number
EP17730744.4A
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German (de)
English (en)
Other versions
EP3475643A1 (fr
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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Priority to HRP20230176TT priority Critical patent/HRP20230176T1/hr
Publication of EP3475643A1 publication Critical patent/EP3475643A1/fr
Application granted granted Critical
Publication of EP3475643B1 publication Critical patent/EP3475643B1/fr
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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 deals with a weapon barrel according to the preamble of claim 1 for a firearm, in particular but not restrictively a machine gun, with an inner barrel profile.
  • Firearm barrels are subjected to significant stresses. In addition to the propellant gas pressure, these are loaded when the shot is fired by the projectile to be fired. In order to be guided precisely, this has a larger outer diameter than the inner diameter of the weapon barrel. This oversize is reduced during the passage of the pipe through deformation and wear.
  • the inside profile of the tube A rifled weapon barrel ensures precise guidance of the projectile in the barrel and also causes the projectile to rotate about its longitudinal axis. This rotational movement, generally referred to as twist, is necessary for the stable flight of the projectile outside the gun barrel.
  • the inner profile rotates at a certain pitch around the tube axis. The accelerated projectile follows it and rotates around its longitudinal axis with increasing speed.
  • the design of the inner tube profile influences the interaction of the bullet.
  • a small inner diameter results in a high compression force of the bullet and ensures corresponding frictional forces.
  • the variables that occur during pressing, such as deformation, friction and wear, are coupled to one another and behave in a highly non-linear manner.
  • the inner tube profiles are often the result of empirical procedures.
  • the DE 1 044 675 B refers to a high gas deflection twist rifling profile for bullet barrels in which the rifling is formed by circular arcs from the rifling of each flank to the elevation of the adjacent field.
  • the DE 200 02 365 U1 presents a barrel with an internal profile in a combination of existing profiles, polygon and draft/field profile, whereby with the right twist the leading edge in the direction of the shot is sharp on the right and the opposite side merges into a polygon profile and has no sharp edges.
  • US-A-1,335,444 discloses a weapon barrel with a field-train profile, the fields running as flat surfaces orthogonal to the diameter of the inner bore and then transitioning into straight field flanks in a discontinuous or rounded manner.
  • EP0892238A2 discloses a weapon barrel with a field-train profile, the fields and trains being curved over their entire circumferential length and merging into one another in a rounded manner.
  • Hard-core projectiles with a tungsten carbide core are significantly stiffer in construction and cause a massive increase in barrel wear with polygon barrels, i.e. weapon barrels with a polygon inner profile.
  • the DE 10 2012 000 686 A1 discloses a weapon barrel with a chrome-plated inner profile to increase resilience.
  • the fields of the inner profile are designed as trapezoidal and asymmetrical polygons and are much narrower than the trains.
  • the fields have a relatively long rise in the form of an incline on one side and a rapidly descending flank on the other side.
  • the chrome plating is such that the chrome layer on the slides is thinner than that on the fields.
  • the object of the invention is to provide an inner profile of the barrel that allows different types of projectiles to be fired, in particular jacketed projectiles with a lead core and hard-core projectiles.
  • the invention is based on the idea of achieving a much more favorable contact pressure distribution in order to minimize wear.
  • An internal profile is used for this created, which is characterized in that the height of the fields (field height) to their edges, ie to the flanks of the field, decreases in the manner claimed. With the two front surfaces and the flanks, the fields resemble a bastion. The so-called bastion profile achieves a much more favorable contact pressure distribution than with the known inner profiles or field-tension profiles. In addition to the contact pressure, the friction and the resulting heating of the weapon barrel are also reduced. In contrast to polygon profiles, the field flanks are retained, albeit in a somewhat reduced form, which in turn are well suited to transferring the twist moment. This construction allows the effect of the twisting moment on the field flanks to be spatially separated from the effect of the pressing process on the surface of the fields.
  • the bastion profile designed in this way improves the wear behavior when using hard-core projectiles for weapon barrels with a high rate of fire, such as in machine guns. Nevertheless, the precise bullet guidance of a normal field-draw profile is retained. A heavy-duty gun barrel is created.
  • FIG. 1 shows a representation of a 90 ° segment 1 1 of a four-barrel field-train profile 10 of a weapon barrel not shown in detail according to the prior art.
  • This segment 11 consists of a draw radius 2 and a smaller field radius 1.
  • the contour of the profile 10 runs in field 5 or in draw 6 on 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 bisecting line 4.
  • 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.
  • a circle is constructed in such a way that there is an intersection 22 on the bisecting line with a field radius.
  • the center M is also on the Angle bisector 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.
  • Material 28 is removed from field 25 that lies within bastion radius 27, ie, between field radius 1 and bastion radius 27.
  • field 25 has its nominal height h only at the center, which increases outwardly by an amount 29 reduced.
  • the 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 front view of a bastion profile 20 of a weapon barrel 30 having four fields/trains.
  • the surface O of the fields 25 consists, in absolute terms, of a single radius. Relative to the nominal field radius, however, the surface O' is receding (filed back), resulting in two surfaces 25.1, 25.2 at an obtuse angle to one another (imaginatively). With 26 trains are marked.
  • the center M can also be on the other side of the profile, as in Figure 2a shown.
  • Such a bastion profile 20 is suitable for or as an inner profile in a highly stressed weapon barrel, in particular a fast-firing machine gun (machine gun). Weapon systems in the small and medium caliber range are particularly affected by this.
  • the tube profile can also be used with other tube types.

Landscapes

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

Claims (3)

  1. Tube d'arme (30) ayant un profil rayé à quatre rainures à symétrie spéculaire (10) pour des armes fortement sollicitées, dans lequel chaque crête (25) présente des flancs de crête droits (25.3, 25.4), dans lequel le contour de toutes les rainures (26) s'étend sur un cercle avec un rayon de rainure (2), dont le centre de cercle se situe sur une bissectrice (23) qui coupe au milieu la crête respective, dans lequel le contour des crêtes (25) s'étend chacun sur un cercle dont le centre (M) se situe sur la bissectrice (23), caractérisé par le fait que le rayon (27) du cercle sur lequel s'étend respectivement le contour des crêtes est supérieur au rayon de rainure (2) et inférieur à l'infini.
  2. Arme ayant un tube d'arme (30) selon la revendication 1.
  3. Arme selon la revendication 2, caractérisée par le fait que l'arme est une arme dans la gamme de petit et de moyen calibre.
EP17730744.4A 2016-06-23 2017-06-09 Canon à profil rayé Active EP3475643B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20230176TT HRP20230176T1 (hr) 2016-06-23 2017-06-09 Cijev oružja sa spiralnim udubljenjima i ispupčenjima u unutrašnjosti cijevi

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016111571.1A DE102016111571A1 (de) 2016-06-23 2016-06-23 Waffenrohr mit Innenprofil
PCT/EP2017/064153 WO2017220348A1 (fr) 2016-06-23 2017-06-09 Tube d'arme à profil intérieur

Publications (2)

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

Family

ID=59070637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17730744.4A Active EP3475643B1 (fr) 2016-06-23 2017-06-09 Canon à profil rayé

Country Status (5)

Country Link
EP (1) EP3475643B1 (fr)
DE (1) DE102016111571A1 (fr)
HR (1) HRP20230176T1 (fr)
PL (1) PL3475643T3 (fr)
WO (1) WO2017220348A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018123278A1 (de) 2018-09-21 2020-03-26 Rheinmetall Waffe Munition Gmbh Verfahren zur Herstellung eines mit einem Drallprofil versehenen, hochwarmfesten Waffenrohres
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 (de) 1955-06-11 1958-11-20 Karl Burgsmueller Drallzugprofil hoher Gasliderung fuer Geschosslaeufe
CH536478A (de) * 1970-06-18 1973-04-30 Rheinmetall Gmbh Mit verlaufenden Feldern und Zügen versehener Lauf für Gewehre und Pistolen
GB1409331A (en) * 1973-03-30 1975-10-08 Devence Secreteary Of State Fo Rifling
DE2738783A1 (de) * 1977-08-27 1979-03-01 Langbein Pfanhauser Werke Ag Chusswaffe
US4437251A (en) 1980-03-14 1984-03-20 Gorman Richard M Full gain twist ratchet rifling
US4308681A (en) 1980-03-14 1982-01-05 Gorman Richard M Progressive ratchet rifling in a full gain twist
WO1997045690A1 (fr) 1996-05-31 1997-12-04 Sharunova, Elena Canon raye
IT1293616B1 (it) * 1997-07-16 1999-03-08 Guido Chiariello Processo per la formazione di canne d'arma da fuoco o di dispositivi di lancio in genere
DE20002365U1 (de) 2000-02-10 2000-05-31 Spindler, Wilhelm, 94474 Vilshofen Waffenlauf mit neuem Lauf-Innenprofil
US20080120889A1 (en) 2006-07-03 2008-05-29 Animesh Bose Processing of rifled gun barrels from advanced materials
DE102012000686A1 (de) 2012-01-17 2013-07-18 Rheinmetall Waffe Munition Gmbh Waffenrohr mit verchromtem Innenprofil

Also Published As

Publication number Publication date
DE102016111571A1 (de) 2017-12-28
PL3475643T3 (pl) 2023-04-24
HRP20230176T1 (hr) 2023-03-31
WO2017220348A1 (fr) 2017-12-28
EP3475643A1 (fr) 2019-05-01

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