EP2805124B1 - Waffenrohr mit verchromtem innenprofil - Google Patents

Waffenrohr mit verchromtem innenprofil Download PDF

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Publication number
EP2805124B1
EP2805124B1 EP12810204.3A EP12810204A EP2805124B1 EP 2805124 B1 EP2805124 B1 EP 2805124B1 EP 12810204 A EP12810204 A EP 12810204A EP 2805124 B1 EP2805124 B1 EP 2805124B1
Authority
EP
European Patent Office
Prior art keywords
chrome
weapon barrel
barrel
inner profile
profile
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.)
Active
Application number
EP12810204.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2805124A1 (de
Inventor
Hubert Schneider
Eckehard Bohnsack
Schlenkert GERT
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
Priority to PL12810204T priority Critical patent/PL2805124T3/pl
Publication of EP2805124A1 publication Critical patent/EP2805124A1/de
Application granted granted Critical
Publication of EP2805124B1 publication Critical patent/EP2805124B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F41A21/22—Barrels which have undergone surface treatment, e.g. phosphating

Definitions

  • the invention relates primarily to a chromed inner profile for particular small-caliber machine guns.
  • the chrome plating is characterized by the fact that it is applied over the entire length of the gun barrel, that is also in the highly thermally stressed areas.
  • a new inner profile for machine guns is provided so that is designed as a profile with polygons and with a field height, which still allow a planned Verchromungs harshdicke.
  • Machine guns in particular small-caliber area are subject to high standards. It is known that gun barrels or gun barrels are provided in the medium caliber and large caliber range with an internal chrome plating. Thus, the weapon tubes can absorb higher loads better.
  • the field-tensile profile may only be about 0.26 mm, so that in conventional field-train geometries of the machine guns a difference between train and field of 0, 13 mm are available.
  • a chrome plating is usually set at 1/10.
  • no clean contour is created in such small calibers, so that in the high pressure ranges, the train-field profile is not prevented from shearing on the trains and these can break away.
  • the DE 10 2005 043 924 B3 discloses a way to harden an inner surface of a small diameter gun barrel.
  • a reflector arrangement is used in which a reflector head deflects a laser light beam onto a section of the inner surface.
  • the invention has as its object to show a possibility that realizes a weapon barrel with a small diameter for high loads.
  • the invention is based on making a full chrome plating of the gun barrel, not just a highly stressed area.
  • the helical swirl flank surfaces located between the fields and trains form a self-locking angle with the respective radius formed at the foot of the flank, which keeps the radial component acting on the pipe wall as small as possible.
  • the barrel has two trains. The trains run in cross-section from the foot of their flank about 90 ° to a half-nominal caliber corresponding arc around the axis of the barrel and then about a flat Archimedean spiral or parabola section to the apex of the next flank.
  • the WO 97/45690 A1 shows a towed barrel with a polygon profile.
  • Another variant of this type describes the US 4,308,681 A1 , Already the US 329,303 A1 and US 835,482 A1 beat such Switzerlandprofile as they US 4,308,681 A1 revealed before.
  • chromium plating of small bore rifle barrels is not recognizable.
  • the US 2008/0120889 A1 mentions in this regard that chrome plating is known for large-caliber weapons. Methods for this disclose the DE 43 35 139 A1 such as DE 44 19 864 C2
  • the US 1,886,218 A discloses a weapon barrel with an inner profile with fields and trains for small caliber weapons, the entire inner profile is chromed. It thus forms the closest prior art for the present invention.
  • the invention is based on the further idea, due to the general condition of the internal geometry of the cross-sectional area to modify the inner profile over known inner profiles of particular small caliber weapons.
  • a new inner profile of a polygon a flattened sawtooth profile, taking into account a same predetermined (pressure) cross-section is provided.
  • a same predetermined (pressure) cross-section is provided.
  • This inner profile then allows a chrome plating the gun barrel.
  • the surfaces of the fields are provided with a thicker chrome layer than the faces of the trains during manufacture. Between both a layer transition is involved.
  • the chrome plating is carried out in a chromium electrolyte and by means of pumps which pump the electrolyte through the barrel or barrel.
  • the chromium deposition takes place in a known manner.
  • Fig. 1 is shown in a sectional view of an otherwise not shown weapon barrel 1.
  • This has an inner profile 2 with 3 fields and trains 4.
  • the fields 3 are designed as polygons - trapezoidal and asymmetrical - which are much narrower than the trains 4.
  • the polygons have a relatively long rise 5 on one side and a rapidly descending or falling edge 6 on the other side ( Fig. 2 ).
  • Such a constructive form of the fields 3 allows a better absorption of the power forces on the vertical height.
  • the preferred chromium plating thickness for the chrome layer 7 of panel 3 would be about 0.095mm and the chrome layer thickness 8 of the string 4 would be about 0.075mm.
  • the area of the train 4 should be about 3.44 mm.
  • the slope 5 of the flanks 6 can be provided with 62.5 ° ( ⁇ 0.5 °), the flank with 25 ° ( ⁇ 0.5 °).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Electroplating Methods And Accessories (AREA)
EP12810204.3A 2012-01-17 2012-12-17 Waffenrohr mit verchromtem innenprofil Active EP2805124B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12810204T PL2805124T3 (pl) 2012-01-17 2012-12-17 Lufa z chromowanym profilem wewnętrznym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012000686A DE102012000686A1 (de) 2012-01-17 2012-01-17 Waffenrohr mit verchromtem Innenprofil
PCT/EP2012/075742 WO2013107578A1 (de) 2012-01-17 2012-12-17 Waffenrohr mit verchromtem innenprofil

Publications (2)

Publication Number Publication Date
EP2805124A1 EP2805124A1 (de) 2014-11-26
EP2805124B1 true EP2805124B1 (de) 2018-04-25

Family

ID=47504911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12810204.3A Active EP2805124B1 (de) 2012-01-17 2012-12-17 Waffenrohr mit verchromtem innenprofil

Country Status (6)

Country Link
EP (1) EP2805124B1 (pl)
DE (1) DE102012000686A1 (pl)
DK (1) DK2805124T3 (pl)
ES (1) ES2677470T3 (pl)
PL (1) PL2805124T3 (pl)
WO (1) WO2013107578A1 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212860B2 (en) 2013-02-28 2015-12-15 Daniel Kunau Firearm rifling
RU2543142C1 (ru) * 2013-08-05 2015-02-27 Петр Никифорович Лищук Устройство патронника
DE102016111571A1 (de) 2016-06-23 2017-12-28 Rheinmetall Waffe Munition Gmbh Waffenrohr mit Innenprofil

Family Cites Families (13)

* 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.
US1886218A (en) * 1927-06-29 1932-11-01 Western Cartridge Co Gun barrel and process of finishing the same
US2465962A (en) * 1945-04-28 1949-03-29 Henry B Allen Protection of bore surfaces of guns
DE1044675B (de) 1955-06-11 1958-11-20 Karl Burgsmueller Drallzugprofil hoher Gasliderung fuer Geschosslaeufe
US4308681A (en) 1980-03-14 1982-01-05 Gorman Richard M Progressive ratchet rifling in a full gain twist
DE4335139A1 (de) 1993-10-15 1995-04-20 Rheinmetall Ind Gmbh Verfahren zur Herstellung eines Waffenrohres mit einer verschleißfesten Innenbeschichtung
DE4419864C2 (de) 1994-06-07 2001-01-11 Rheinmetall W & M Gmbh Elektrode zur elektrolytischen Innenbeschichtung und/oder zum Elektropolieren von Waffenrohren
WO1997045690A1 (en) 1996-05-31 1997-12-04 Sharunova, Elena Rifled barrel
DE19834394A1 (de) * 1998-07-30 2000-02-03 Rheinmetall W & M Gmbh Waffenrohr mit einer verschleißmindernden Hartchromschicht
DE20002365U1 (de) * 2000-02-10 2000-05-31 Spindler, Wilhelm, 94474 Vilshofen Waffenlauf mit neuem Lauf-Innenprofil
DE102005043924B3 (de) 2005-09-14 2007-04-05 Heckler & Koch Gmbh Reflektoranordnung und Verfahren zum Härten von Innenflächen
US20080120889A1 (en) 2006-07-03 2008-05-29 Animesh Bose Processing of rifled gun barrels from advanced materials

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2013107578A1 (de) 2013-07-25
ES2677470T3 (es) 2018-08-02
DK2805124T3 (en) 2018-07-16
EP2805124A1 (de) 2014-11-26
DE102012000686A1 (de) 2013-07-18
PL2805124T3 (pl) 2018-10-31

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