EP0890814A2 - Tube de canon - Google Patents

Tube de canon Download PDF

Info

Publication number
EP0890814A2
EP0890814A2 EP98109071A EP98109071A EP0890814A2 EP 0890814 A2 EP0890814 A2 EP 0890814A2 EP 98109071 A EP98109071 A EP 98109071A EP 98109071 A EP98109071 A EP 98109071A EP 0890814 A2 EP0890814 A2 EP 0890814A2
Authority
EP
European Patent Office
Prior art keywords
trains
train
flank
gun barrel
guide
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
EP98109071A
Other languages
German (de)
English (en)
Other versions
EP0890814A3 (fr
EP0890814B1 (fr
Inventor
Henning Von Seidlitz
Ralf-Joachim Dr. Herrmann
Udo Sabranski
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 W&M GmbH
Original Assignee
Rheinmetall Industrie AG
Rheinmetall W&M 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 Industrie AG, Rheinmetall W&M GmbH filed Critical Rheinmetall Industrie AG
Publication of EP0890814A2 publication Critical patent/EP0890814A2/fr
Publication of EP0890814A3 publication Critical patent/EP0890814A3/fr
Application granted granted Critical
Publication of EP0890814B1 publication Critical patent/EP0890814B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 weapon barrel with the features of the preamble of patent claim 1
  • the projectiles have one or for transmitting the twist sometimes also several consecutive guide bands, which during the Launch acceleration in the tube are subjected to a high load and more or less subject to heavy wear.
  • the gun barrel is often extended, for example from 39 caliber lengths to 52 caliber lengths.
  • the guiding belts of the projectiles are thereby loaded to their limits and wear out stronger.
  • This wear on the guide band is due to a reduction in the surface pressure on the Flank flanks can be reduced, whereby either the twist angle is reduced or the number of trains, train depth or Guide bandwidth can be increased or by a combination of the above.
  • the Surface pressure is caused by a groin force R during the spin acceleration. At the dimensioning of the cables and guide belts is accordingly the largest occurring groin strength.
  • DE-40 01 130 A1 describes a weapon barrel, the swirl course of which has been optimized in order to To improve the inside and outside ballistics of the missiles shot from them and Reduce wear on the guide belt.
  • the twist is optimized taking into account a groin force curve R (x), the swirl angle being broken down into a Fourier series.
  • the swirl angle can only be changed to a small extent or not at all.
  • a Change questions the compatibility of some imported floors, one Change in the depth of the draft, which is a groove depth spiraled into the inner tube wall is the compatibility of all imported floors is questioned.
  • a change in Guide bandwidth is not possible with inserted bullets.
  • the stake More resistant guide belt materials e.g. soft iron instead of brass
  • lead to Wear reduction but is at least with inserted sharp projectiles (Combat ammunition) extremely problematic and expensive.
  • the object of the invention is to provide a weapon barrel in which the guide band wear on the projectile is reduced without the bullet speed in the muzzle area is adversely affected.
  • FIG. 1 a cross section of a weapon barrel 1 is shown in the detail, in which 2 trains 3 are machined spirally as grooves over the entire circumference in a tube inner wall. Between the trains 3 there are remaining strips 4, which are also called fields 4.
  • the trains 3 and fields 4 determine the structural design of a train profile in the weapon barrel 1.
  • the trains 3 are formed by a train width b z and two train flanks 5.
  • a train depth 6 of the trains 3 is determined from the incorporated groove depth and represents a height difference between the field 4 and a train base 7 of the trains 3.
  • the fields 4 remaining between the trains 3 intersect spirally in a guide band 9 when a projectile 8 is shot down , which is attached to the floor 8, in a conventional manner ( Figure 2).
  • This guide band 9 receives a negative impression of the tensile profile of the tube 1 during the crushing when firing, the depressions of the tube 1, the trains 3, appearing raised on the guide band 9. These raised locations are called webs 10, which have a web width b s and two web flanks 11. At the start of the launch acceleration, the web width b s on the guide belt 9 is equal to the train width b z of train 3 (FIG. 3a).
  • the acceleration path of the projectile 8 can be extended and / or Propellant mass can be increased.
  • the total wear of the guide belt is proportional to a friction work on Guide band 9, which in turn the integral of the flank pressure, i.e. of the Surface pressure on the flanks 5 above the acceleration path of the projectile 8 is proportional.
  • the flank pressure is additively made up of a portion as a result of Rotational acceleration of the projectile 8 and the gas pressure in, due to the wear removal arising, gap 12 together
  • a large gap 12 leads to the formation of tangential forces, due to the Pressure, also to form radial forces, which increases the acceleration of the projectile is adversely affected.
  • a muzzle velocity of 827 m / s is achieved with a tube 1 of 39 caliber lengths. It is known that 48 trains lead to little wear on the guide belt, so that the gap 12 is almost zero. With 52 caliber lengths, the muzzle velocity is increased to 945 m / s. Heavy wear on the guide belt can now be observed on 48 trains. In order to keep the guide band wear at 827 m / s and at 945 m / s approximately the same due to the gas pressure in the gap 12, the number of trains is increased from 48 to 60, so that the guide band wear does not change due to the rotational acceleration of the projectile per train. The following must apply: 60 48 ⁇ 945 827 2nd
  • the wear volume per train 3 is equal to the train flank area of the train flanks 5 times that vertical stock removal on the flank surface, which is proportional to the Flank pressure is.
  • the tension profile itself preferably has an inner radius r z of 0.5 mm to the respective flank 5 and the field 4 has an upper field radius r f to the flank 5 of preferably 0.3 mm on the lower tension base 11, which results in sharp-edged chamfers on the tension surface which would notch into the guide band 9 during the squeezing.
  • the flank angle ⁇ between the flank 5 and the vertical on the associated base 7 the flank surface can be varied so that by creating steeper flanks 5 the area of the fields 4 is structurally enlarged, the area of the flanks 5 is reduced without the Surface pressure on these flanks 5 changes.
  • This new type of train flank realizes an equally large squeeze and one Total wear reduction of the guide belt 9 in a 60 pull profile compared to one 48 train profile.
  • the area pressure is reduced by the strip force R (x) 20% reached.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Chemically Coating (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Hydrogenated Pyridines (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Continuous Casting (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP98109071A 1997-07-09 1998-05-19 Tube de canon Expired - Lifetime EP0890814B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19729294A DE19729294A1 (de) 1997-07-09 1997-07-09 Waffenrohr
DE19729294 1997-07-09

Publications (3)

Publication Number Publication Date
EP0890814A2 true EP0890814A2 (fr) 1999-01-13
EP0890814A3 EP0890814A3 (fr) 2000-08-16
EP0890814B1 EP0890814B1 (fr) 2003-02-12

Family

ID=7835111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109071A Expired - Lifetime EP0890814B1 (fr) 1997-07-09 1998-05-19 Tube de canon

Country Status (7)

Country Link
US (1) US6170187B1 (fr)
EP (1) EP0890814B1 (fr)
JP (1) JP3626348B2 (fr)
AT (1) ATE232594T1 (fr)
DE (2) DE19729294A1 (fr)
ES (1) ES2190005T3 (fr)
NO (1) NO982328L (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100373125C (zh) * 2001-07-25 2008-03-05 阮志成 一种改进的漆弹枪枪管
KR20120088306A (ko) * 2011-01-31 2012-08-08 국방과학연구소 강선각 산출 방법
EP2780653B1 (fr) 2011-11-15 2021-10-27 F.J. Feddersen, Inc Rayage du canon d'une arme à feu
RU2543142C1 (ru) * 2013-08-05 2015-02-27 Петр Никифорович Лищук Устройство патронника
KR102076826B1 (ko) 2018-11-09 2020-02-12 국방과학연구소 포신 수명 증대를 위한 강선율 계산 장치 및 방법
US10883785B1 (en) * 2019-09-13 2021-01-05 U.S. Government As Represented By The Secretary Of The Army Gun barrel equipped with alternating variable pitch rifling
CN111121533B (zh) * 2020-02-17 2022-03-18 南京理工大学 一种阻力自适应式弹带装置
CN111220019A (zh) * 2020-02-17 2020-06-02 南京理工大学 一种含预置刻槽的混合弹带装置
US11493296B1 (en) 2021-10-07 2022-11-08 Frederick H. Kart Firearm barrel and method of improving projectile weapon accuracy, velocity and durability

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4001130A1 (de) 1990-01-17 1991-07-18 Rheinmetall Gmbh Waffenrohr mit optimiertem drallverlauf
DE4200171A1 (de) 1992-01-07 1993-07-08 Rheinmetall Gmbh Waffenrohr

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1355422A (en) * 1917-07-14 1920-10-12 John D Pedersen Rifle-barrel
US2498052A (en) * 1946-01-05 1950-02-21 Nicol H Smith Method of retarding erosion of gun barrels
US3100358A (en) * 1959-11-27 1963-08-13 Marlin Firearms Co Rifled gun barrel
DE3300175C2 (de) * 1983-01-05 1986-06-05 Wolfgang Th. Dipl.-Ing. 7238 Oberndorf Wegwerth Verfahren zur Herstellung von Waffenrohren
DE3409073A1 (de) * 1984-03-13 1985-09-26 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Waffenrohr mit zug-feld-profil
US5435089A (en) * 1993-05-07 1995-07-25 Rodney, Jr.; Frederick W. Muzzle loader barrel having a counter bore to facilitate loading of a slug

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4001130A1 (de) 1990-01-17 1991-07-18 Rheinmetall Gmbh Waffenrohr mit optimiertem drallverlauf
DE4200171A1 (de) 1992-01-07 1993-07-08 Rheinmetall Gmbh Waffenrohr

Also Published As

Publication number Publication date
JPH1172298A (ja) 1999-03-16
DE59807159D1 (de) 2003-03-20
US6170187B1 (en) 2001-01-09
EP0890814A3 (fr) 2000-08-16
NO982328L (no) 1999-01-11
EP0890814B1 (fr) 2003-02-12
NO982328D0 (no) 1998-05-22
ATE232594T1 (de) 2003-02-15
ES2190005T3 (es) 2003-07-16
DE19729294A1 (de) 1999-01-14
JP3626348B2 (ja) 2005-03-09

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