EP0614712A1 - Procédé et dispositif pour la fabrication de tubes à résistance élevée - Google Patents

Procédé et dispositif pour la fabrication de tubes à résistance élevée Download PDF

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Publication number
EP0614712A1
EP0614712A1 EP94103457A EP94103457A EP0614712A1 EP 0614712 A1 EP0614712 A1 EP 0614712A1 EP 94103457 A EP94103457 A EP 94103457A EP 94103457 A EP94103457 A EP 94103457A EP 0614712 A1 EP0614712 A1 EP 0614712A1
Authority
EP
European Patent Office
Prior art keywords
tube
mandrel
pressure
shotgun
finished
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
EP94103457A
Other languages
German (de)
English (en)
Other versions
EP0614712B1 (fr
Inventor
Bernd Stein
Willi Zimmermann
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.)
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
Original Assignee
Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Publication of EP0614712A1 publication Critical patent/EP0614712A1/fr
Application granted granted Critical
Publication of EP0614712B1 publication Critical patent/EP0614712B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/18—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons grooved pins; Rolling grooves, e.g. oil grooves, in articles
    • B21H7/187—Rolling helical or rectilinear grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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 and gunbarrels
    • B21C37/153—Making tubes with inner- and/or outer guides

Definitions

  • the invention relates to a method and a device for producing high-strength tubes according to the preamble of claim 1 and claim 3.
  • a barrel is drilled into a round bar.
  • the tube is then strain hardened, i.e. the outer surface is subjected to hammering.
  • the inner surface of the tube is honed and the tube is partially turned from the outside or subjected to grinding and brought to the required length.
  • the barrel of shotgun barrels is usually provided with a "choke", i.e. a reduction in the diameter of the barrel at the mouth.
  • the invention has for its object to provide a method and an apparatus for the production of high-strength pipes, which requires only a few steps and is therefore less expensive. Shotgun and rifle barrels are specifically to be produced with this process.
  • Spinning rollers are understood to mean a forming process for reducing the wall thickness of cylindrical hollow bodies.
  • the wall of the hollow body rolls on a helix, thus stretching the workpiece in the direction of the workpiece axis (see Lueger Lexicon of Technology, R hindert Taschenbuch-Verlag, 1971).
  • the processing of the round tubes with the known pressure rolling process has the advantage of the small number of work steps. Furthermore, a more uniform strain hardening of the material is created by the pressure rolling, whereby more uniform strengths can be achieved. Another advantage is that partially different strengths can be achieved in the same part. In addition, pressure-rolled parts have a particularly favorable stretched fiber course, so that there is a longer service life for the high-strength pipes produced.
  • the outer surface of the pipes is produced without further rework during the pressure rolling process. It is highly compacted and has a low roughness. The surface is therefore less sensitive to impacts and is far less susceptible to corrosion. The pipes have extremely tight dimensional tolerances due to the process.
  • the method is used for producing shotgun or rifle barrels. As one of the last steps, only the cartridge chamber has to be drilled or turned out. The manufacturing costs of shotgun or rifle barrels can be significantly reduced by the method according to the invention.
  • the mandrel expediently has a polished surface. This eliminates the need for a subsequent honing process.
  • the mandrel which is pushed into a round tube during manufacture, is advantageously provided with spiral depressions which correspond to those of the fields in the barrel.
  • the trains and fields of the barrels are also manufactured in one operation using this method.
  • the mandrel expediently has a defined bevel at its outer end, which corresponds to the choke at the mouth of the shotgun barrel.
  • This choke is a reduction in the diameter of the barrel at the mouth.
  • Fig. 1 shows schematically a device (spinning roll tool 3) for the production of pipes, such as shotgun or rifle barrels.
  • a cylindrical mandrel 2 is clamped, which rotates with the speed of the spindle 8 in the direction of the arrow.
  • the outside diameter of the mandrel 2 corresponds to the inside diameter of the finished running tube.
  • the mandrel 2 has a bevel 5 which merges into a cylindrical end section 10 of the mandrel 2 with a reduced diameter. This reduction in diameter, also called “choke”, is usually necessary at the muzzle of a shotgun barrel.
  • the round tube 1 - also called tube - is pushed in the direction of the spindle 8 at the beginning of the pressure rolling process by the axial forward movement of the pressure rollers 4 (see arrows).
  • the tube 1 claws on its end facing the spindle 8 with the driver 9 arranged there, which consists of individual elevations.
  • the tube 1 rotates together with the mandrel 2.
  • spinning rollers or spinning rollers 4 On the tube 1 there are three spinning rollers or spinning rollers 4, which are arranged in a defined axial offset from one another perpendicular to the axis 11 of the tube 1 or the mandrel 2.
  • the spinning rollers or spinning rollers 4 are set in rotation and turn counter to the direction of rotation of the spindle 8 (see arrows).
  • these pressure rollers or pressure rollers 4 are pressed onto the tube 1 and slowly in the axial direction (see arrows) the tube 1 or the mandrel 2 moved. As a result, the tube 1 is solidified and stretched at the same time. Due to the bevel 5 on the end of the mandrel 2 facing away from the spindle 8, the tube 1 can at the same time be provided with a cone on the inside in one work step.
  • the pressure rollers 4 start in the area of the end section 10.
  • the exact geometry of the forming area of the pressure rollers or pressure rollers 4 is in each case adapted to the round tube that is not to be formed.
  • the mandrel 2 is greased before the tube 1 is pushed on.
  • FIG. 2 shows two subsequent processing steps for producing a shotgun or rifle barrel.
  • FIG. 2a shows schematically the partial overturning and cutting to length of the pressure-rolled tube 1.
  • FIG. 2b shows the drilling or unscrewing of a cartridge chamber.
  • FIG. 3 shows a section of a mandrel 2.
  • This mandrel 2 advantageously has a polished surface, which makes a subsequent honing process unnecessary.
  • the mandrel 2 is expediently provided in the manufacture of rifle barrels with spiral depressions 6 which correspond to those of the fields 8 (see FIG. 4) in the rifle barrel.
  • Fig. 4 shows a section of a finished pressure-rolled tube 1 with a cut-out portion for a better view of the tube 1.
  • the trains 7 and fields 8 can be seen, which are advantageously produced directly in one operation during the pressure rolling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
EP94103457A 1993-03-12 1994-03-08 Procédé pour la fabrication des fusils non rayés Expired - Lifetime EP0614712B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4307775 1993-03-12
DE4307775A DE4307775A1 (de) 1993-03-12 1993-03-12 Verfahren und Vorrichtung zur Herstellung von hochfesten Rohren

Publications (2)

Publication Number Publication Date
EP0614712A1 true EP0614712A1 (fr) 1994-09-14
EP0614712B1 EP0614712B1 (fr) 1999-06-02

Family

ID=6482556

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103457A Expired - Lifetime EP0614712B1 (fr) 1993-03-12 1994-03-08 Procédé pour la fabrication des fusils non rayés

Country Status (2)

Country Link
EP (1) EP0614712B1 (fr)
DE (2) DE4307775A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0882532A2 (fr) * 1997-06-03 1998-12-09 Dynamit Nobel GmbH Explosivstoff- und Systemtechnik Dispositif de fluotournage et procédé pour la fabrication de pièces à denture plate
US6038901A (en) * 1995-09-07 2000-03-21 Dynamit Nobel Gmbh Explosivstoff-Und Systemstechnik Method and device for producing press-rolled pipes with inner wall thickenings at the ends
CN102470418A (zh) * 2009-07-09 2012-05-23 莱菲尔德金属旋压机有限公司 旋压辊压方法及装置
US8910409B1 (en) * 2010-02-09 2014-12-16 Ati Properties, Inc. System and method of producing autofrettage in tubular components using a flowforming process
US9217619B2 (en) 2011-03-02 2015-12-22 Ati Properties, Inc. Composite gun barrel with outer sleeve made from shape memory alloy to dampen firing vibrations
EP2454553A4 (fr) * 2009-07-17 2017-05-17 Carrel Innovations OY Procédé de production d'un canon d'arme à feu, dispositif pour produire un canon d'arme à feu et canon d'arme à feu
US9662740B2 (en) 2004-08-02 2017-05-30 Ati Properties Llc Method for making corrosion resistant fluid conducting parts
WO2017157556A1 (fr) * 2016-03-17 2017-09-21 Repkon Machine and Tool Industry and Trade Inc. Procédé de production de canons d'arme, et appareil de mise en œuvre d'un tel procédé
US10118259B1 (en) 2012-12-11 2018-11-06 Ati Properties Llc Corrosion resistant bimetallic tube manufactured by a two-step process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19750686C1 (de) * 1997-11-15 1999-09-23 Ks Aluminium Technologie Ag Verfahren zum Herstellen einer Zylinderlaufbuchse
DE10337929A1 (de) * 2003-08-14 2005-03-17 Willy Voit Gmbh & Co. Verfahren zur Herstellung von einteiligen Hohlkörpern mit profilierten Endbereichen, Hohlkörper und Verwendung der Hohlkörper

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU32982A1 (fr) * 1954-07-05
DE768149C (de) * 1941-12-24 1958-07-03 Gustav Appel Maschinenfabrik Dornausbildung zur Herstellung von Rohren, insbesondere fuer Schusswaffen
FR1499906A (fr) * 1966-03-10 1967-11-03 Le Ministre Des Armees Delegat Procédé d'obtention de rainures ou renforts sur la surface interne de corps à génératrices droites ou curvilignes pendant l'opération de formage par fluotournage
DE2420014A1 (de) * 1973-06-07 1975-01-02 France Etat Verfahren zur herstellung von zuegen oder riefen in der innenflaeche von koerpern mit gerader oder gebogener mantellinie waehrend einer verformung durch abstreckdruekken, sowie vorrichtung zur durchfuehrung dieses verfahrens

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3768291A (en) * 1972-02-07 1973-10-30 Uop Inc Method of forming spiral ridges on the inside diameter of externally finned tube
AT322329B (de) * 1973-12-04 1975-05-12 Gfm Fertigungstechnik Schmiedemaschinen zum herstellen insbesondere von schrotläufen
DE2559239A1 (de) * 1975-12-30 1977-07-14 Fritz Werner Ind Ausruestung Ausbildung der entlastungsrillen in der patronenkammer eines schusswaffenlaufes
US4306437A (en) * 1979-12-10 1981-12-22 Grotnes Metalforming Systems, Inc. System for planishing metal pipe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE768149C (de) * 1941-12-24 1958-07-03 Gustav Appel Maschinenfabrik Dornausbildung zur Herstellung von Rohren, insbesondere fuer Schusswaffen
LU32982A1 (fr) * 1954-07-05
FR1499906A (fr) * 1966-03-10 1967-11-03 Le Ministre Des Armees Delegat Procédé d'obtention de rainures ou renforts sur la surface interne de corps à génératrices droites ou curvilignes pendant l'opération de formage par fluotournage
DE2420014A1 (de) * 1973-06-07 1975-01-02 France Etat Verfahren zur herstellung von zuegen oder riefen in der innenflaeche von koerpern mit gerader oder gebogener mantellinie waehrend einer verformung durch abstreckdruekken, sowie vorrichtung zur durchfuehrung dieses verfahrens

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6038901A (en) * 1995-09-07 2000-03-21 Dynamit Nobel Gmbh Explosivstoff-Und Systemstechnik Method and device for producing press-rolled pipes with inner wall thickenings at the ends
EP0882532A3 (fr) * 1997-06-03 1999-03-17 Dynamit Nobel GmbH Explosivstoff- und Systemtechnik Dispositif de fluotournage et procédé pour la fabrication de pièces à denture plate
EP0882532A2 (fr) * 1997-06-03 1998-12-09 Dynamit Nobel GmbH Explosivstoff- und Systemtechnik Dispositif de fluotournage et procédé pour la fabrication de pièces à denture plate
US9662740B2 (en) 2004-08-02 2017-05-30 Ati Properties Llc Method for making corrosion resistant fluid conducting parts
CN102470418A (zh) * 2009-07-09 2012-05-23 莱菲尔德金属旋压机有限公司 旋压辊压方法及装置
US8997541B2 (en) 2009-07-09 2015-04-07 Leifeld Metal Spinning Ag Method and device for stretch-flow forming
CN102470418B (zh) * 2009-07-09 2014-09-17 莱菲尔德金属旋压机有限公司 旋压辊压方法及装置
EP2454553A4 (fr) * 2009-07-17 2017-05-17 Carrel Innovations OY Procédé de production d'un canon d'arme à feu, dispositif pour produire un canon d'arme à feu et canon d'arme à feu
US8910409B1 (en) * 2010-02-09 2014-12-16 Ati Properties, Inc. System and method of producing autofrettage in tubular components using a flowforming process
US9217619B2 (en) 2011-03-02 2015-12-22 Ati Properties, Inc. Composite gun barrel with outer sleeve made from shape memory alloy to dampen firing vibrations
US10118259B1 (en) 2012-12-11 2018-11-06 Ati Properties Llc Corrosion resistant bimetallic tube manufactured by a two-step process
WO2017157556A1 (fr) * 2016-03-17 2017-09-21 Repkon Machine and Tool Industry and Trade Inc. Procédé de production de canons d'arme, et appareil de mise en œuvre d'un tel procédé
US10857580B2 (en) 2016-03-17 2020-12-08 Repkon Machine and Tool Industry and Trade Inc. Method for producing gun barrels and apparatus for performing such method

Also Published As

Publication number Publication date
DE59408320D1 (de) 1999-07-08
EP0614712B1 (fr) 1999-06-02
DE4307775A1 (de) 1994-09-15

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