EP2690391A1 - Procédé de fabrication d'une douille de cartouche avec rainure d'extraction ainsi que la douille de cartouche - Google Patents

Procédé de fabrication d'une douille de cartouche avec rainure d'extraction ainsi que la douille de cartouche Download PDF

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Publication number
EP2690391A1
EP2690391A1 EP12177676.9A EP12177676A EP2690391A1 EP 2690391 A1 EP2690391 A1 EP 2690391A1 EP 12177676 A EP12177676 A EP 12177676A EP 2690391 A1 EP2690391 A1 EP 2690391A1
Authority
EP
European Patent Office
Prior art keywords
auszieherrille
sleeve
sleeve blank
cartridge
cartridge case
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Withdrawn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
EP12177676.9A
Other languages
German (de)
English (en)
Inventor
Stefan Lehmann
Martin Heinrich Dettmer
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.)
Metallwerk Elisenhuette GmbH
Original Assignee
Metallwerk Elisenhuette 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 Metallwerk Elisenhuette GmbH filed Critical Metallwerk Elisenhuette GmbH
Priority to EP12177676.9A priority Critical patent/EP2690391A1/fr
Publication of EP2690391A1 publication Critical patent/EP2690391A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/04—Shaping thin-walled hollow articles, e.g. cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/12—Shaping end portions of hollow articles
    • B21K21/14—Shaping end portions of hollow articles closed or substantially-closed ends, e.g. cartridge bottoms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/26—Cartridge cases

Definitions

  • the invention relates to a method for producing a cartridge case with Auszieherrille and a cartridge case, in particular the invention relates to cartridge cases in handgun calibers made of brass.
  • Cartridges combine the components needed to fire a projectile from a firearm into a single unit.
  • a cartridge comprises the following components: projectile, cartridge case with Auszieherille, propellant, primer for igniting the propellant.
  • Cartridge sleeves are usually made of brass.
  • the sleeves are made by forming, i. H. Extrusions molded in several steps from a piece of metal.
  • the sleeve bottom is usually harder than the sleeve neck; This is achieved in particular by hardening or soft annealing and by targeted forming processes.
  • Brass cartridge cases are recycled to a high degree after being used on shooting ranges, and are particularly popular as a valuable material because there is hardly any significant metallurgical contamination during use and collection.
  • the Auszieherrille which like an annular groove in the region of the sleeve bottom ring-like running around the cartridge case, serves to pull out the fired sleeve or during unloading to pull out the cartridge. It is used in particular for semi-automatic and fully automatic machines, ie independently recharging weapons.
  • the Auszieherrille was necessary in the introduction of self-loading pistols and repeating rifles with magazines. Border cartridges with overhanging rim required too much space in the box magazines, and with the introduction of machine guns with strapped ammunition rimless cartridges with Auszieherrille facilitated the Charge Cycle After firing a shot, the claw extractor claw pulls the empty cartridge case out of the chamber to eject it.
  • the Auszieherrille is usually made by machining, which requires a complex processing of each sleeve blank with a turning tool.
  • the invention proposes a chipless production process, such as. B. Removal by means of Loser.
  • a chipless production process such as. B. Removal by means of Loser.
  • the forming of the Auszieherrille by forming the blank takes place, If the deformation is carried out at normal temperatures, in which the blank does not have increased flowability by heating, benefits the transformed area, so the bottom portion and the critical area of the Auszieherrille of the with this Forming associated strain hardening. Furthermore, there is no weakening of the bottom region, which was already work-hardened by a first deformation, which took place during the production of the blank.
  • the sleeve blank be clamped between moldings and displace an externally acting stamp in the region of Auszieherrille to create the same there the material.
  • the sleeve blank can also be produced by using placeholders which, in a subsequent forming step, keep the area for the extraction groove free, as described below:
  • the placeholder is applied in several parts and in a direction perpendicular to the longitudinal axis of the sleeve blank to the sleeve blank or pulled out of the Auszieherrille.
  • the term "a direction perpendicular to the longitudinal axis" does not mean exactly perpendicular, but that a sufficiently vertical component of movement is present to move the Platzhaltersegmente, in particular after the formation of Auszieherrille out of this.
  • the multi-parting allows a defined procedure of the individual dummy segments and there is a self-centering in the introduction in the same place. Particularly good results have been achieved when the placeholder comprises 6-8 segments, which are guided in particular radially to the longitudinal axis of the sleeve blank.
  • a placeholder basically requires that a geometry, that is, the bottom (inner diameter) of the Auszieherrille already existed before the attachment of the placeholder. It can therefore be carried out in another embodiment of the method in a further step before applying the placeholder by another tool, a forming step for producing the inner diameter of Auszieherrille.
  • the placeholder serves first as a forming tool and then as a placeholder.
  • the sleeve blank has a diameter in the region of the Auszieherrille to be manufactured before the placement of the spacer, which corresponds to the desired Auszieherrillen pressmesser the caliber to be produced.
  • the placeholder can be designed in this case so that he does not have to exercise self-transforming forces.
  • an already suitably prepared sleeve blank is preferably provided.
  • the latter has a step in the bottom region, the region lying above the step having a larger diameter than the region lying below the step.
  • the area below the level is therefore in the range of the future Auszieherrille and thus requires less or no forming work.
  • the forming work is then further minimized when the larger diameter corresponds to the caliber of the cartridge case to be manufactured and the smaller below-the-stage diameter corresponds to the extension caliper diameter associated with that caliber.
  • the sleeve bottom is brought into its final shape during forming, optionally with simultaneous, preferably also reshaping, production of the recess for the primer cap. It can therefore be made in a single forming step equally the Auszieherrille and all or much of the case bottom.
  • the sleeve blank is made of metal, in particular brass or a brass alloy. With these materials, good experiences were made in the implementation of the process and the testing of the ammunition made with it.
  • a corresponding cartridge case is further claimed, with an upper sleeve opening for receiving a propellant charge and a projectile; a sleeve bottom arranged in the lower bottom region of the cartridge case for receiving a primer cap and a ring-like around the cartridge case Auszieherrille in the region of the sleeve bottom, which is characterized in that the Auszieherrille was produced by a chipless manufacturing process.
  • This may preferably be used to make a cartridge in a hand and handgun caliber, particularly 4.6mm x 30, 9mm x 19, 5.56mm x 45, 7.62mm x 51, 7.62mm x 67, 12.7mm x 99 become.
  • the cost advantages to be realized according to the invention are due to the large quantities and the low price particularly noticeable, because the additional step of cutting production of Auszieherrille deleted.
  • Fig. 1 shows the cartridge case 1 according to the invention with its upper sleeve opening 11 for receiving a propellant charge and a projectile.
  • the sleeve bottom 12 which is to receive the primer in a recess, not shown here.
  • the sleeve bottom 12 extends around the cartridge shell around the inventively produced without cutting Auszieherrille 13.
  • the dimensions of the cartridge case shown correspond to the prior art.
  • Fig. 2 shows the sleeve blank 1A immediately before the forming step for producing the Auszieherille 13.
  • the provided sleeve blank has in the bottom portion 12 already a step 14 on. Above this step, the blank 1A has a larger diameter than the area below the step.
  • the larger diameter already corresponds to the caliber of the cartridge case to be manufactured, and the smaller diameter lying below the stage already corresponds to the extension blade diameter assigned to this caliber.
  • Fig. 2 the placeholders 2 are already pressed down on the sleeve blank in the region of the Auszieherrille 1 3A to be manufactured, so that the placeholder 2 occupies the space of the Auszieherrille 13 to be manufactured and keeps it free during the subsequent forming.
  • the forming of the bottom area is done by a press ram 3 from below. This presses the formed material against the placeholder and forms the Auszieherille. It is the moment before pressing shown.
  • the multisegmentary placeholders are withdrawn from the extraction die formed in the previous step.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)
EP12177676.9A 2012-07-24 2012-07-24 Procédé de fabrication d'une douille de cartouche avec rainure d'extraction ainsi que la douille de cartouche Withdrawn EP2690391A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12177676.9A EP2690391A1 (fr) 2012-07-24 2012-07-24 Procédé de fabrication d'une douille de cartouche avec rainure d'extraction ainsi que la douille de cartouche

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12177676.9A EP2690391A1 (fr) 2012-07-24 2012-07-24 Procédé de fabrication d'une douille de cartouche avec rainure d'extraction ainsi que la douille de cartouche

Publications (1)

Publication Number Publication Date
EP2690391A1 true EP2690391A1 (fr) 2014-01-29

Family

ID=46682662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12177676.9A Withdrawn EP2690391A1 (fr) 2012-07-24 2012-07-24 Procédé de fabrication d'une douille de cartouche avec rainure d'extraction ainsi que la douille de cartouche

Country Status (1)

Country Link
EP (1) EP2690391A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020003744A1 (de) 2020-06-23 2021-12-23 Diehl Metall Stiftung & Co. Kg Bodenteil zur Herstellung einer Patronenhülse sowie Patronenhülse, Verfahren zur Herstellung eines Bodenteils für eine Patronenhülse sowie Verfahren zur Herstellung einer Patronenhülse
WO2023046559A3 (fr) * 2021-09-21 2023-06-15 Ruag Ammotec Ag Procédé et outil de fabrication d'un bloc-culasse d'une douille de cartouche en plusieurs parties, bloc-culasse et douille de cartouche

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE700207C (de) * 1937-05-22 1940-12-16 Waffen Und Munitionsfabriken A Presse zum Formen von mit Ausziehernut versehenen Patronenhuelsenboeden
DE732984C (de) * 1940-06-13 1943-03-17 Heinrich Krieghoff Verfahren zum spanlosen Herstellen der Auszieherringnut am Boden von staehlernen Patronenhuelsen
US2904873A (en) * 1956-09-12 1959-09-22 Henry F Hild Drawn steel cartridge case and its manufacture
FR2544068A1 (fr) * 1983-04-05 1984-10-12 Lachaussee Sa Ets Procede de fabrication d'un etui de cartouche a percussion centrale et etui de cartouche ainsi realise

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE700207C (de) * 1937-05-22 1940-12-16 Waffen Und Munitionsfabriken A Presse zum Formen von mit Ausziehernut versehenen Patronenhuelsenboeden
DE732984C (de) * 1940-06-13 1943-03-17 Heinrich Krieghoff Verfahren zum spanlosen Herstellen der Auszieherringnut am Boden von staehlernen Patronenhuelsen
US2904873A (en) * 1956-09-12 1959-09-22 Henry F Hild Drawn steel cartridge case and its manufacture
FR2544068A1 (fr) * 1983-04-05 1984-10-12 Lachaussee Sa Ets Procede de fabrication d'un etui de cartouche a percussion centrale et etui de cartouche ainsi realise

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020003744A1 (de) 2020-06-23 2021-12-23 Diehl Metall Stiftung & Co. Kg Bodenteil zur Herstellung einer Patronenhülse sowie Patronenhülse, Verfahren zur Herstellung eines Bodenteils für eine Patronenhülse sowie Verfahren zur Herstellung einer Patronenhülse
WO2021259643A1 (fr) 2020-06-23 2021-12-30 Diehl Metall Stiftung & Co. Kg Pièce de base destinée à produire un boîtier de cartouche et boîtier de cartouche, procédé de production d'une pièce de base pour un boîtier de cartouche, et procédé de production d'un boîtier de cartouche
WO2023046559A3 (fr) * 2021-09-21 2023-06-15 Ruag Ammotec Ag Procédé et outil de fabrication d'un bloc-culasse d'une douille de cartouche en plusieurs parties, bloc-culasse et douille de cartouche

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