EP2964407A1 - Procédé de fabrication d'un canon comportant un boîtier de culasse raccordé d'un seul tenant - Google Patents

Procédé de fabrication d'un canon comportant un boîtier de culasse raccordé d'un seul tenant

Info

Publication number
EP2964407A1
EP2964407A1 EP14714916.5A EP14714916A EP2964407A1 EP 2964407 A1 EP2964407 A1 EP 2964407A1 EP 14714916 A EP14714916 A EP 14714916A EP 2964407 A1 EP2964407 A1 EP 2964407A1
Authority
EP
European Patent Office
Prior art keywords
mandrel
hammering
hammer
hammer mandrel
housing
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
EP14714916.5A
Other languages
German (de)
English (en)
Other versions
EP2964407B1 (fr
Inventor
Harald Pichler
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.)
Steyr Mannlicher GmbH
Original Assignee
Steyr Mannlicher 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 Steyr Mannlicher GmbH filed Critical Steyr Mannlicher GmbH
Priority to HRP20161605TT priority Critical patent/HRP20161605T1/hr
Publication of EP2964407A1 publication Critical patent/EP2964407A1/fr
Application granted granted Critical
Publication of EP2964407B1 publication Critical patent/EP2964407B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/152—Making rifle or gun barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/152—Making rifle or gun barrels
    • B21C37/153—Making tubes with inner or outer guides
    • 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
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/066—Making machine elements axles or shafts splined
    • 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
    • B21K1/00—Making machine elements
    • B21K1/14—Making machine elements fittings
    • B21K1/16—Making machine elements fittings parts of pipe or hose couplings
    • 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
    • F41A21/12—Cartridge chambers; Chamber liners
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls
    • B21C37/207—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls with helical guides

Definitions

  • the present invention relates to a method for producing a barrel with integrally subsequent housing for a closure head.
  • the invention has for its object to overcome the disadvantages of the known prior art and to provide a method for producing a barrel with integrally subsequent housing, which allows a reduction of the manufacturing costs and at the same time increasing the material strength. This goal is achieved by a method of the type mentioned above, with the steps:
  • the hammering (cold forging) of a running blank on a hammers mandrel (forging mandrel) corresponding to the inner race profile is used worldwide for the manufacture of barrels in the world of weapons production due to the high achievable precision and economic production.
  • the hammering leads to an increase in strength of the base material and a significant extension of the life of the barrel.
  • the invention uses hammering for the first time for the manufacture of a housing integrally connected to the barrel, so that it, too, can experience the increase in strength of the cold forging operation and, moreover, can be manufactured in a single operation on the same hammering machine without unseating the blank.
  • the first hammer mandrel can be removed from the through-hole after the first hammering, and then the second hammer mandrel for the first hammer hammer can be removed second hammering are introduced into the through hole.
  • the first hammer mandrel is held during the first hammering with a support rod passing through a central bore of the second hammer mandrel.
  • the second hammer mandrel does not need to be removed during hammering, ie the hammering can be carried out continuously from the barrel mouth over the barrel to the housing.
  • first hammer mandrel for the second hammering is at least partially withdrawn into the central bore of the second hammer mandrel, so that the first hammer mandrel (barrel hammer mandrel) on hammering the housing on the second hammer mandrel (housing hammer). Hämmerdorn) is not in the way.
  • the diameter transition between the first and the second hammers mandrel is large and the formation of a sharp inner shoulder between the housing interior and barrel bore or cartridge chamber during hammering not allowed, can additionally after the first or after the second hammering the through hole in the transition region between the first and second longitudinal section machining to be edited. This can also be used to create an undercut for locking the closure head in the housing.
  • the closure-side end region of the first longitudinal section can be formed by machining to form a cartridge chamber.
  • the cartridge chamber is also hammered, namely by hammering after the first and before the second hammering of the closure-side end portion of the first longitudinal portion on a cartridge chamber forming part of the first hammer mandrel.
  • the second hammering is preferably carried out in the direction from the first longitudinal section in order not to interrupt the continuity of the hammering process from the mouth of the barrel.
  • the invention provides a hammers mandrel arrangement for carrying out the presented method, comprising: a first hammer mandrel having a peripheral portion corresponding to the race inner profile and fixed at one end to a reduced diameter retaining rod, and
  • a second hammer mandrel having a peripheral part corresponding to the housing inner profile and provided with a central bore
  • the housing can be hammered directly with the running hammer in a single hammering operation, which not only considerably simplifies the production, but also decisively increases the precision of the one-piece arrangement of housing and barrel.
  • the first hammer mandrel is at least partially retractable into the central bore of the second hammer mandrel to facilitate removal of the hammer mandrel assembly from the through bore after the second hammering.
  • the hammers mandrel arrangement is also designed to hammer the cartridge chamber of the barrel by the first hammer mandrel has a first part corresponding to the inner race profile and a subsequent second part corresponding to the cartridge chamber.
  • the second hammer mandrel has Leksriefen. In conjunction with a final milling out of an undercut in the closure housing, this results in a kind of bayonet groove in the closure housing into which a closure head provided with radial projections is inserted and can be locked by twisting (rotary piston closure).
  • FIG. 1 shows a barrel with a one-piece housing in connection with a hammer mandrel arrangement in a perspective view.
  • Figures 2a and 2b show the barrel with one-piece housing of Figure 1 in a longitudinal section (Fig. 2a) and a front view from the rear ( Figure 2b) ..;
  • Figures 3a and 3b show the hammering mandrel arrangement of the invention in a side view ( Figure 3a) and a rear end view, respectively (Figure 3b);
  • Figs. 4 and 5 show various embodiments of the manufacturing method of the invention based on partial longitudinal sections through the barrel to the housing and the Hämmerdorn- arrangement during successive phases of the process.
  • a barrel 1 for a firewasher is shown, e.g. a rifle, integrally connected to a housing 2 for other components of the weapon.
  • the barrel 1 has in known manner an orifice 3 and a bore 4, the rear, the mouth 3 remote end portion is extended to a chamber 5.
  • the housing 2 accommodates a closure head for the barrel 1, e.g. a (not shown) rotary piston closure, which is inserted with sprocket-like radial projections in axial réelleriefen 6 of the housing 2 and locked in the fully inserted, the cartridge chamber 5 closing position by turning its extensions against the grooves 6 in an undercut 7 bayonet-like.
  • a closure head for the barrel e.g. a (not shown) rotary piston closure, which is inserted with sprocket-like radial projections in axial réelleriefen 6 of the housing 2 and locked in the fully inserted, the cartridge chamber 5 closing position by turning its extensions against the grooves 6 in an undercut 7 bayonet-like.
  • the housing 2 for this purpose may have corresponding openings, in particular on its underside, for the passage of a magazine shaft and a trigger device, as known in the art.
  • any end-side terminations of the housing 2 are on its rear side, eg covers and guides for the rotary piston closure emerging to the rear during its movement, not shown in detail.
  • one piece on the barrel 1 attaching housing 2 can be considered in this sense as a housing semi-finished part, which can be supplemented or modified by other housing components.
  • the barrel 1 together with the housing 2 is made by hammering (cold forging) on a hammer mandrel assembly 10 comprising a first hammer mandrel 11 for the barrel 1 and a second hammer mandrel 12 for the barrel 2 in a barrel hammer machine, as hereinafter referred to is explained in more detail in FIGS. 4 and 5.
  • the first (running) hammer mandrel 11 in turn is composed of a first part 13 corresponding to the inner profile of the barrel 1 and a subsequent second part 14 corresponding to the inner profile of the cartridge chamber 5.
  • the barrel hammer mandrel 11 is held by a support rod 15 at its rear end during hammering.
  • the inner race profile part 13 of the barrel hammer mandrel 11 can, as is known to those skilled in the art, be provided on its outer side with helical webs or grooves 16 in order to form trains or fields in the barrel 1.
  • Both the inner race profile part 13 and the cartridge chamber part 14 of the barrel hammer mandrel 11 are each slightly conical, slightly widened towards the rear, in order to "firmly pack" during the relative movement of the barrel hammers 11 through the barrel 1. of the barrel hammers 11 to avoid.
  • the housing hammers mandrel 12 of the hammers mandrel assembly 10 forming the inner profile of the housing 2 may be a completely separate component from the hamming mandrel 11, or may be penetrated by the support rod 15 of the hamming mandrel 11 as shown here, i. this is slidably guided in a central bore 16 of the housing hammer mandrel 12.
  • the barrel hammers mandrel 11 can also be loaded from the first part 13 to form the barrel part. nenprofils exist, ie the cartridge bearing part 14 may be omitted. Further, the barrel hammers 11 may be provided at its rear end, be it the first part 13 or the second part 14, if any, with a tapered shoulder 17 which is insertable into the central bore 16 of the housing hammer mandrel 12 to partially retract the barrel hammer mandrel 11 telescopically into the housing hammer mandrel 12 while leaving a defined projection of the barrel hammer mandrel 11 over the face of the housing hammer mandrel 12. If desired, the barrel hammer mandrel 11 can also be retracted telescopically into the housing hammer mandrel 12, or even pulled out through and back out of the housing hammer mandrel 12.
  • the housing hammers mandrel 12 is provided on its outer periphery with longitudinal grooves 18 and remaining therebetween longitudinal webs 19, so as to form the mecanicriefen 6 of the housing 2, which serve in cooperation with the undercut 7 of the bayonet lock of the closure (closure head).
  • Fig. 4 shows a first embodiment of the method for producing the barrel 1 with the housing 2 using two separate barrel and housing Hämmerdorne
  • a cylindrical blank 20 with a through-bore 21 is assumed, whose inner diameter Di is at least as large as the maximum outer diameter of the closure or closure head to be received in the housing 2, and thus also at least as large as the maximum outside diameter of the housing hammer mandrel
  • the barrel 1 (optionally with the cartridge chamber 5) forged, and from a subsequent second longitudinal section 20 ", the housing 2 is forged, as will now be explained in detail.
  • the barrel-hammer mandrel 11 held on its support rod 15, introduced and with the blank 20 between the forging hammers 22nd a (not shown) Laufnosmmermaschine positioned (Fig. 4b).
  • four forging hammers 22 are usually used around the circumference of the blank 20 and hammer periodically and simultaneously on the blank 20 from the outside, to forge the blank 20 on the barrel hammer mandrel 11, while at the same time the hammers 22 and the hammer mandrel 11 is advanced from the mouth 3 in the direction of the arrow 23 relative to the blank 20 (as a rule, the hammers 22 and mandrel 11 remain stationary and the blank 20 is moved counter to the direction of the arrow 23).
  • the barrel-hammer mandrel 11 is thereby rotated simultaneously to leave 16 by means of its grooves helical traction in the thus generated bore 24 of the barrel 1, as known in the art.
  • the cartridge bearing 5 can be further forged by stopping the barrel hamming mandrel 11 from the blank 20 and thereby exposing its cartridge bearing member 14 (not shown)
  • the cartridge chamber 5 can be produced by a separate machining of the throughbore 21, eg by milling, either equally or only after completion all hammers steps.
  • the shell hammer mandrel 12 is then inserted into the through hole 20 and the housing 2 hammered or forged thereon, see Fig. 4c.
  • the transition region between barrel 1 and housing 2 can be machined after hammering the barrel 1 and before hammering the housing 2, not only to mill the cartridge chamber 5, but also to form a defined internal shoulder 25 in the through hole 21 (Figure 4d) which may be used as a reference and abutment surface for the second hammers mandrel 12 when hammering the housing 2 ( Figure 4e).
  • Figure 4d a defined internal shoulder 25 in the through hole 21
  • Figure 4e the transition region between barrel 1 and housing 2
  • the transition region between barrel 1 and housing 2 can be machined after hammering the barrel 1 and before hammering the housing 2, not only to mill the cartridge chamber 5, but also to form a defined internal shoulder 25 in the through hole 21 ( Figure 4d) which may be used as a reference and abutment surface for the second hammers mandrel 12 when hammering the housing 2 ( Figure 4e).
  • the housing hammer mandrel 12 is removed and the undercut 7 for the locking of the closure head and the Cartridge
  • FIG. 5 shows a variant of the method of FIG. 4, in which a change of the hammer mandrels 11, 12 in the barrel hammer machine and the associated repositioning of the blank 20 is not necessary and thus all hammering steps for the barrel 1 and the housing 2 can be executed continuously in one go.
  • the hammer mandrel arrangement 10 shown in FIGS. 3a and 3b is used, in which the support rod 15 of the barrel hammer mandrel 11 is first passed through the bore 16 of the housing hammer mandrel 12 and in this constellation both hammer mandrels 11 12 are inserted into the blank 20 (FIG. 5a).
  • the barrel hammer mandrel 11 is progressively advanced together with the forging hammers 22 with respect to the blank 20 in the direction of the arrow 23 (or the barrel 1 opposite to the arrow direction 23), the retaining bar 15 is pulled through the housing hammer mandrel 12 (Fig. 5b).
  • the barrel hemming mandrel 11 is at least partially retracted into the bore 16 of the housing hemming mandrel 12, ie at least with its tapered section 17 center and axially align the entire hammer mandrel assembly 10 from the first and second hammer mandrels 11, 12. If desired, after hammering the cartridge chamber Also, the cartridge chamber part 14 of the barrel hammer mandrel 11 are retracted into the housing hemming mandrel 12, and optionally also the inner race profile part 13, ie the entire barrel hemming mandrel 11 (FIG. 5d).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Forging (AREA)
  • Lock And Its Accessories (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un canon (1) comportant un boîtier (2) raccordé d'un seul tenant pour au moins une tête mobile de culasse, comprenant les étapes suivantes : préparation d'une ébauche cylindrique (20) dotée d'un alésage traversant (21) correspondant au diamètre de la tête mobile de culasse ; martelage d'un premier segment longitudinal (20') de l'ébauche (20) sur une partie (13) d'un mandrin de martelage (11) correspondant au profil intérieur longitudinal pendant que ledit mandrin (11) est guidé dans l'alésage traversant (21) ; et martelage d'un deuxième segment longitudinal (20") de l'ébauche (20) sur un deuxième mandrin de martelage (12) correspondant au profil intérieur du boîtier pendant que ledit mandrin (12) est introduit dans l'alésage traversant (21).
EP14714916.5A 2013-03-07 2014-03-06 Procédé de fabrication d'un canon comportant un boîtier de culasse raccordé d'un seul tenant Not-in-force EP2964407B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
HRP20161605TT HRP20161605T1 (hr) 2013-03-07 2014-03-06 Postupak proizvodnje puščane cijevi s integralno spojenim kućištem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50156/2013A AT514033B1 (de) 2013-03-07 2013-03-07 Verfahren zum Herstellen eines Laufs mit einstückig anschließendem Gehäuse
PCT/AT2014/050053 WO2014134651A1 (fr) 2013-03-07 2014-03-06 Procédé de fabrication d'un canon comportant un boîtier de culasse raccordé d'un seul tenant

Publications (2)

Publication Number Publication Date
EP2964407A1 true EP2964407A1 (fr) 2016-01-13
EP2964407B1 EP2964407B1 (fr) 2016-10-26

Family

ID=50433886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14714916.5A Not-in-force EP2964407B1 (fr) 2013-03-07 2014-03-06 Procédé de fabrication d'un canon comportant un boîtier de culasse raccordé d'un seul tenant

Country Status (6)

Country Link
US (1) US9662696B2 (fr)
EP (1) EP2964407B1 (fr)
AT (1) AT514033B1 (fr)
ES (1) ES2608809T3 (fr)
HR (1) HRP20161605T1 (fr)
WO (1) WO2014134651A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3800431A1 (fr) 2019-10-04 2021-04-07 Glock Technology GmbH Barillet avec chambre de verrouillage et procédé de fabrication
US12502705B2 (en) 2021-04-06 2025-12-23 Magna powertrain gmbh & co kg Device and method for continuously producing an at least partly hollow shaft having a varying inner and/or outer diameter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021203374A1 (de) * 2021-04-06 2022-10-06 Magna powertrain gmbh & co kg Verfahren zur Herstellung einer Polygonwelle
US12345490B2 (en) * 2021-09-08 2025-07-01 Brown Dog Intellectual Properties Extended life composite matrix-wrapped lightweight firearm barrel
CN120023197B (zh) * 2025-04-24 2025-09-16 烟台通吉汽车零部件有限公司 一种汽车底盘用减震部件生产装置

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
EP3800431A1 (fr) 2019-10-04 2021-04-07 Glock Technology GmbH Barillet avec chambre de verrouillage et procédé de fabrication
WO2021063882A1 (fr) 2019-10-04 2021-04-08 Glock Technology Gmbh Canon pour arme à feu à espace de verrouillage, et procédé de production
US11879699B2 (en) 2019-10-04 2024-01-23 Glock Technology Gmbh Barrel for a firearm with locking space, and production process
US12502705B2 (en) 2021-04-06 2025-12-23 Magna powertrain gmbh & co kg Device and method for continuously producing an at least partly hollow shaft having a varying inner and/or outer diameter

Also Published As

Publication number Publication date
EP2964407B1 (fr) 2016-10-26
US20160030989A1 (en) 2016-02-04
WO2014134651A1 (fr) 2014-09-12
HRP20161605T1 (hr) 2017-01-13
ES2608809T3 (es) 2017-04-17
AT514033B1 (de) 2015-05-15
AT514033A1 (de) 2014-09-15
US9662696B2 (en) 2017-05-30

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