EP0935117B1 - Method for force fitting a tubular liner in the outer tubular case of a gun barrel - Google Patents
Method for force fitting a tubular liner in the outer tubular case of a gun barrel Download PDFInfo
- Publication number
- EP0935117B1 EP0935117B1 EP98124171A EP98124171A EP0935117B1 EP 0935117 B1 EP0935117 B1 EP 0935117B1 EP 98124171 A EP98124171 A EP 98124171A EP 98124171 A EP98124171 A EP 98124171A EP 0935117 B1 EP0935117 B1 EP 0935117B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liner
- casing
- jacketed barrel
- barrel
- jacketed
- 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.)
- Expired - Lifetime
Links
Images
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
- F41A21/02—Composite barrels, i.e. barrels having multiple layers, e.g. of different materials
- F41A21/04—Barrel liners
Definitions
- the invention relates to a method for producing a non-positive connection of a casing with the Jacket tube of a barrel weapon by shrinking.
- a method for producing a non-positive connection of a casing with the Jacket tube of a barrel weapon by shrinking is known from US Pat. No. 2,915,946 A, the casing pipe being cooled to a temperature below -50 ° C., the casing pipe being heated to a temperature in the partial region in which it is to be connected to the casing pipe, which is chosen in this way is known that its inner diameter is larger than the outer diameter of the casing and the casing is then inserted into the casing.
- the present invention is based on the object relatively long and thin-walled casing pipes on simple Wise and very accurate with the jacket pipes accordingly Connect barrel weapons.
- the invention is based on the idea that To increase the joint play between the casing and casing pipe, that in addition to the heating of the casing tube Cooling of the casing below a value of -50 ° C, preferably to -70 ° C.
- the shrinking process proceeds advantageously slowly at first, because that heated (shrinking) casing pipe to no immediate leads to substantial heating of the casing and thus also no major increase in diameter of the casing causes.
- the heating and cooling of the jacket tube should be in some areas be controllable in such a way that the jacket tube first the middle area of the casing and only after one given time also on the remaining side areas the casing is shrink-fit.
- a weapon barrel of a tank cannon is designated by 1, which consists of a casing tube 2 and a thin-walled Casing tube 3 exists, which is highly loaded on the inside Subarea 4 (in the following also as a joining area designated) of the casing tube 2 and arranged with this is connected by shrinking.
- the casing 3 is first perpendicular to one Fixing mandrel 5 of a standing device 6 with base plate 7 placed on it and aligned (Fig.2).
- a standing device 6 with base plate 7 placed on it and aligned (Fig.2).
- Fig.2 Around the casing 3 To protect icing when cooling, it is made with polystyrene blocks 8 surrounded and on the top with a polystyrene hood 9 Mistake.
- the casing 3 is filled with Dry ice 10 via an attachment tube 11.
- the fixing mandrel 5 the also contains a through hole 12 is also filled with dry ice 10 and cooled. This will uniform cooling over the entire length of the casing 3 reached (depending on the wall thickness and material of the The casing is used for a good cooling of the casing up to 3 hours at approx. -70 ° C).
- heating can take place jacket tube 2 to approx. 335 ° C (+/- 5 ° C). This ensures sufficient heating of the entire joint area 4 is assured, the actual Heating area joining area 4 on both sides by approx. 0.5 m exceed.
- the heating rate should be between 20 and 30 ° C to ensure sufficient heating of the jacket tube 2 to enable, whereby inductive heating by means of a corresponding heater 13 (Fig.3) in practice as has proven advantageous.
- This can help simplify positioning at the cargo space end 16 of the casing tube 2 special funnel 17 can be arranged (Fig.3).
- the polystyrene block 8 and the attachment tube 11 are then removed, the casing tube 3 is cleaned dry and lightly wetted with a solid lubricant, preferably molybdenum disulfide (MoS 2 ).
- a solid lubricant preferably molybdenum disulfide (MoS 2 ).
- the casing tube 2 is up to the other end 18 of the casing 3 for checking and possibly correcting the positioning lowered. Is the positioning correct, the jacket tube 2 is lowered until that upper end 18 of the casing 3 after passing through Cargo space 19 against the front of the casing delimiting Projection 20 (Fig.1) of the tubular casing 2 abuts.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Herstellung einer kraftschlüssigen Verbindung eines Futterrohres mit dem Mantelrohr einer Rohrwaffe durch Einschrumpfen. Aus der US 2 915 946 A ist ein derartiges Verfahren, wobei das Futterrohr auf eine Temperatur unterhalb -50°C abgekühlt wird, das Mantelrohr in dem Teilbereich, in dem es mit dem Futterrohr verbunden werden soll, auf eine Temperatur erwärmt wird die derart gewählt ist, daß sein Innendurchmesser größen ist als der Außendurchmesser des Futterrohres und das Futterrohr dann in das Mantelrohr eingeführt wird bekannt.The invention relates to a method for producing a non-positive connection of a casing with the Jacket tube of a barrel weapon by shrinking. Such a method is known from US Pat. No. 2,915,946 A, the casing pipe being cooled to a temperature below -50 ° C., the casing pipe being heated to a temperature in the partial region in which it is to be connected to the casing pipe, which is chosen in this way is known that its inner diameter is larger than the outer diameter of the casing and the casing is then inserted into the casing.
Um ausgeschossene Waffenrohre wieder bestimmungsgemäß verwenden zu können, ist es seit langem bekannt, die Rohre auszubohren und anschließend mit einem dünnen, nicht selbsttragenden Rohr auszufüttern (vgl. z.B. Rheinmetall "Waffentechnisches Taschenbuch" 7. unveränderte Auflage 1985, Düsseldorf 1980). Die Futterrohre werden mit dem Mantelrohr, z.B. durch Einschrumpfen, verbunden, wobei üblicherweise das Mantelrohr erwärmt und das Futterrohr durch Wasser gekühlt wird.To reuse the fired gun barrel as intended to be able to drill the pipes has long been known and then with a thin, not self-supporting To feed the pipe (see e.g. Rheinmetall "Weapons Paperback "7th unchanged edition 1985, Düsseldorf 1980). The casing pipes are with the casing pipe, e.g. by shrinking, usually the Jacket tube heated and the casing tube cooled by water becomes.
Insbesondere bei Verwendung von Futterrohren mit einem großen L/d-Verhältnis hat es sich als nachteilig erwiesen, daß bei Anwendung dieses bekannten Fügeverfahrens das Fügespiel zwischen Futter- und Mantelrohr sehr gering ist, weil beim Warmschrumpfen eine maximale obere Temperatur des Mantelrohres nicht überschritten werden darf. Anderenfalls besteht die Gefahr, daß der Eigenspannungszustand des entsprechenden Waffenrohres zerstört werden würde.Especially when using casing pipes with a large one L / d ratio has proven disadvantageous in that Application of this known joining process the joining game between the casing and the casing pipe is very small, because at Heat shrink a maximum upper temperature of the casing tube must not be exceeded. Otherwise there is a risk that the residual stress state of the corresponding gun barrel are destroyed would.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die relativ langen und dünnwandigen Futterrohre auf einfache Weise und sehr genau mit den Mantelrohren entsprechender Rohrwaffen zu verbinden.The present invention is based on the object relatively long and thin-walled casing pipes on simple Wise and very accurate with the jacket pipes accordingly Connect barrel weapons.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.
Weitere vorteilhafte Ausgestaltungen der Erfindung offenbaren
die Unteransprüche.This object is solved by the features of
Im wesentlichen liegt der Erfindung der Gedanke zugrunde, das Fügespiel zwischen Futter- und Mantelrohr dadurch zu vergrößern, daß zusätzlich zu der Erwärmung des Mantelrohres eine Abkühlung des Futterrohres unter einen Wert von -50°C, vorzugsweise auf -70°C, vorgenommen wird.Essentially, the invention is based on the idea that To increase the joint play between the casing and casing pipe, that in addition to the heating of the casing tube Cooling of the casing below a value of -50 ° C, preferably to -70 ° C.
Wird das Futterrohr beim Einbringen in das Mantelrohr zunächst noch weiter gekühlt, so verläuft der Schrumpfvorgang vorteilhafterweise zunächst entsprechend langsam, weil das erwärmte (schrumpfende) Mantelrohr zu keiner sofortigen wesentlichen Erwärmung des Futterrohres führt und damit auch keine stärkere Durchmesservergrößerung des Futterrohres bewirkt.If the casing is inserted into the casing pipe first cooled even further, the shrinking process proceeds advantageously slowly at first, because that heated (shrinking) casing pipe to no immediate leads to substantial heating of the casing and thus also no major increase in diameter of the casing causes.
Zur Abkühlung des Futterrohres wird dieses vorzugsweise mit Trockeneis gefüllt. Sofern dabei die Abkühlung nicht im Vakuum oder in einem mit Schutzgas gefüllten Raum erfolgt, muß aufgrund der in der Umgebung vorhandenen Luftfeuchtigkeit das Futterrohr während des Abkühlvorganges außenseitig mittels einer Isolierschicht geschützt werden. To cool the casing, this is preferably done with Dry ice filled. If the cooling is not in the Vacuum or in a room filled with protective gas, due to the humidity in the area outside of the casing during the cooling process be protected by an insulating layer.
Die Erwärmung und Abkühlung des Mantelrohres sollte bereichsweise steuerbar sein, derart, daß das Mantelrohr zunächst auf den mittleren Bereich des Futterrohres und erst nach einer vorgegebenen Zeit auch auf die verbleibenden Seitenbereiche des Futterrohres aufschrumpfbar ist.The heating and cooling of the jacket tube should be in some areas be controllable in such a way that the jacket tube first the middle area of the casing and only after one given time also on the remaining side areas the casing is shrink-fit.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus dem folgenden anhand von Figuren erläuterten Ausführungsbeispiel. Es zeigen:
- Fig.1
- den Längsschnitt durch ein Waffenrohr, bei dem das Futterrohr nach dem erfindungsgemäßen Verfahren in das Mantelrohr eingeschrumpft wurde;
- Fig.2
- einen verkleinerten Längsschnitt auf einem Fixierdorn angeordneten Futterrohr bei dem Abkühlvorgang und
- Fig.3
- den Längsschnitt durch ein auf das Futterrohr aufgesetztes Mantelrohr bei dem Schrumpfungsvorgang.
- Fig.1
- the longitudinal section through a weapon barrel, in which the casing was shrunk into the jacket tube according to the inventive method;
- Fig.2
- a reduced longitudinal section on a mandrel arranged casing during the cooling process and
- Figure 3
- the longitudinal section through a casing pipe placed on the casing tube during the shrinking process.
In Fig.1 ist mit 1 ein Waffenrohr einer Panzerkanone bezeichnet,
welches aus einem Mantelrohr 2 und einem dünnwandigen
Futterrohr 3 besteht, welches innenseitig in einem hoch belasteten
Teilbereich 4 (im folgenden auch als Fügebereich
bezeichnet) des Mantelrohres 2 angeordnet und mit diesem
durch Einschrumpfen verbunden ist.1, a weapon barrel of a tank cannon is designated by 1,
which consists of a
Um das Futterrohr 3 mit dem Mantelrohr 2 erfindungsgemäß zu
verbinden, wird zunächst das Futterrohr 3 senkrecht auf einen
Fixierdorn 5 einer Standvorrichtung 6 mit Bodenplatte 7 aufgesetzt
und ausgerichtet (Fig.2). Um das Futterrohr 3 vor
Vereisung beim Abkühlen zu schützen, wird es mit Styroporblöcken
8 umgeben und oberseitig mit einer Styroporhaube 9
versehen.To the
Anschließend erfolgt die Befüllung des Futterrohres 3 mit
Trockeneis 10 über ein Ansetzrohr 11. Der Fixierdorn 5, der
ebenfalls eine durchgehende Bohrung 12 enthält, wird ebenfalls
mit Trockeneis 10 gefüllt und gekühlt. Dadurch wird
eine gleichmäßige Abkühlung über die gesamte Länge des Futterrohres
3 erreicht (je nach Wandstärke und Material des
Futterrohres werden für eine gute Durchkühlung des Futterrohres
auf ca. -70°C bis zu 3 Stunden benötigt).Then the
Parallel zum Abkühlen des Futterrohres 3 kann mit dem Erwärmen
des Mantelrohres 2 auf ca. 335°C (+/- 5°C) begonnen werden.
Damit eine ausreichende Erwärmung des gesamten Fügebereiches
4 sicher gewährleistet ist, sollte der tatsächliche
Erwärmungsbereich den Fügebereich 4 beidseitig um ca. 0,5 m
überschreiten. Die Aufheizrate sollte etwa zwischen 20 und
30°C liegen, um eine genügende Durchheizung des Mantelrohres
2 zu ermöglichen, wobei sich eine induktive Erwärmung mittels
einer entsprechenden Heizung 13 (Fig.3) in der Praxis als
vorteilhaft erwiesen hat.Parallel to the cooling of the
Sind Mantelrohr 2 und Futterrohr 3 im gewünschten Zustand,
wird das weiterhin erwärmte Mantelrohr 2 mit einer Hubvorrichtung
14 an seiner Mündung 15 angehoben und über das noch
mit Styroporblock 8 umgebenen Ansetzrohr 11 und Futterrohr 3
positioniert. Dabei kann zur Vereinfachung der Positionierung
am ladungsraumseitigen Ende 16 des Mantelrohres 2 ein
spezieller Anführtrichter 17 angeordnet werden (Fig.3).If the
Der Styroporblock 8 und das Ansetzrohr 11 werden dann
entfernt, das Futterrohr 3 trocken gesäubert und leicht mit
einem Feststoffschmierstoff, vorzugsweise Molybdändisulfid
(MoS2), leicht benetzt. The
Anschließend wird das Mantelrohr 2 bis an das odere Ende 18
des Futterrohres 3 zur Überprüfung und evtl. Nachkorrektur
der Positionierung heruntergelassen. Ist die Positionierung
korrekt, erfolgt das Absenken des Mantelrohres 2 bis das
obere Ende 18 des Futterrohres 3 nach Passieren des
Ladungsraumes 19 gegen den das Futterrohr vorderseitig begrenzenden
Vorsprung 20 (Fig.1) des Mantelrohres 2 stößt.Subsequently, the
Danach wird der für die Erwärmung des mittleren Teilbereiches
21 des Fügebereiches 4 verantwortliche Heizungsteil abgeschaltet
und entfernt und dieser Teilbereich dann mit Luft
gekühlt. Gleichzeitig kann ein Verschlußstopfen 22 am unteren
Ende 23 der Standvorrichtung 6 entfernt werden, damit das
noch vorhandene Trockeneis 10 beseitigt werden und sich das
Futterrohr nun schneller auf die Temperatur des Mantelrohres
erwärmen kann.Then the for the heating of the
Hat sich das Mantelrohr 2 in dem mittleren Teilbereich 21 um
ca. 100°C abgekühlt, so wird die Heizung abgeschaltet und das
gesamte Mantelrohr mit Luft abgekühlt. Dieses stufenweise
Kühlen be-wirkt, daß das Mantelrohr 2 das Futterrohr 3 zuerst
in seinem mittleren Teilbereich 21 festhält und dann von
beiden Seiten über das Futterrohr 3 schrumpft. Dadurch wird
vermieden, daß durch eine Längskontraktion des Mantelrohres 2
eine Spaltbil-dung am Übergang zwischen dem Futterrohr 3 und
dem vorderen Kaliberteil des Mantelrohres 2 auftritt.Has the
Ist die Temperatur des Mantelrohres 2 auf ca. 50°C gesunken,
kann das Waffenrohr 1 mittels der Hubvorrichtung 14 von der
Standvorrichtung 6 gehoben und in die entsprechende Waffe
eingebaut werden. If the temperature of the
- 11
- Waffenrohrbarrel
- 22
- Mantelrohrcasing pipe
- 33
- Futterrohrcasing
- 44
- Teilbereich (Mantelrohr), FügebereichPartial area (casing pipe), joining area
- 55
- Fixierdornlocking pin
- 66
- StandvorrichtungA fixture
- 77
- Bodenplattebaseplate
- 88th
- Styroporblock, IsolierkörperStyrofoam block, insulating body
- 99
- Styroporhaube, Styroporblock, IsolierkörperPolystyrene hood, polystyrene block, insulator
- 1010
- Trockeneisdry ice
- 1111
- Ansetzrohrjoining pipe
- 1212
- Bohrung (Fixierdorn)Bore (fixing mandrel)
- 1313
- Heizungheater
- 1414
- Hubvorrichtunglifting device
- 1515
- Mündungmuzzle
- 1616
- Ende (Mantelrohr)End (casing tube)
- 1717
- AnführtrichterAnführtrichter
- 1818
- obere Ende (Futterrohr)upper end (casing)
- 1919
- Ladungsraumcargo space
- 2020
- Vorsprunghead Start
- 2121
- mittlere Bereichmiddle range
- 2222
- Verschlußstopfenplugs
- 2323
- unteres Ende (Standvorrichtung)lower end (standing device)
Claims (10)
- Method of producing a non-positive connection of a liner (3) to the jacketed barrel (2) of a gun by means of shrinking comprising the features:a) the liner (3) is cooled down to a temperature below -50°C;b) the jacketed barrel (2), in the subregion (4) where it is to be connected to the liner (3), is heated up to a temperature selected in such a way that its inside diameter is greater than the outside diameter of the liner (3);c) the liner (3) is then introduced into the jacketed barrel (2), wherein the temperature of the jacketed barrel (2) is held constant;d) heating of the jacketed barrel (2) is then terminated and cooling of the jacketed barrel (2) is effected in such a way that the jacketed barrel uniformly shrinks initially onto the middle subregion of the liner (3) and only after a predetermined time also onto the remaining end regions of the liner.
- Method according to claim 1, characterized in that the liner (3) is disposed vertically on a stand apparatus (6) provided with a fixing mandrel (5), and that for the connection of liner and jacketed barrel (3, 2) the jacketed barrel (2) is disposed above the liner (3) and then slid from above over the liner (3).
- Method according to claim 1 or 2, characterized in that the liner (3) is cooled by means of dry ice (10) introduced into the liner.
- Method according to one of claims 1 to 3, characterized in that the liner (3) is cooled down to a temperature of -70°C.
- Method according to one of claims 1 to 4, characterized in that during the cooling operation the liner (3) is protected at the outside by means of insulating bodies (8, 9) against condensation as a result of air humidity.
- Method according to one of claims 1 to 5, characterized in that the jacketed barrel (2) is heated inductively.
- Method according to one of claims 1 to 6, characterized in that the jacketed barrel (2), in the region of the liner (3) that is to be fastened, is heated up to a temperature of between 330 and 340°C.
- Method according to one of claims 1 to 5, characterized in that for the rate of temperature rise of the jacketed barrel (2) values of between 20 and 30°C/h are selected.
- Method according to one of claims 1 to 8, characterized in that during the shrinking operation the jacketed barrel (2) is cooled by air.
- Method according to one of claims 1 to 9, characterized in that immediately before slipping the jacketed barrel (2) onto the liner (3) the latter is provided at the outside with a coating of molybdenum disulphide (MoS2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19804651 | 1998-02-06 | ||
DE19804651A DE19804651A1 (en) | 1998-02-06 | 1998-02-06 | Method for producing a non-positive connection between a casing and the casing of a gun |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0935117A2 EP0935117A2 (en) | 1999-08-11 |
EP0935117A3 EP0935117A3 (en) | 2000-08-16 |
EP0935117B1 true EP0935117B1 (en) | 2004-02-25 |
Family
ID=7856792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98124171A Expired - Lifetime EP0935117B1 (en) | 1998-02-06 | 1998-12-21 | Method for force fitting a tubular liner in the outer tubular case of a gun barrel |
Country Status (3)
Country | Link |
---|---|
US (1) | US6158158A (en) |
EP (1) | EP0935117B1 (en) |
DE (2) | DE19804651A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040226211A1 (en) * | 2003-05-16 | 2004-11-18 | Ra Brands. L.L.C. | Composite receiver for firearms |
SE528525C2 (en) * | 2005-05-03 | 2006-12-05 | Bae Systems Bofors Ab | Device for electrical energy transmission in firearms |
US9796057B2 (en) * | 2015-01-15 | 2017-10-24 | Saeilo Enterprises, Inc. | Gun barrel assembly |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA579043A (en) * | 1959-07-07 | R. Hiatt William | Gun barrels | |
US1514166A (en) * | 1922-01-11 | 1924-11-04 | Bethlehem Steel Corp | Method of assembling tubes and liners in gun manufacture |
US2915946A (en) * | 1951-10-30 | 1959-12-08 | Westinghouse Electric Corp | Segmented molybdenum gun liner |
US3716905A (en) * | 1970-09-18 | 1973-02-20 | Ncr | Method of making connection between a printing drum and torsion shaft |
SE408960B (en) * | 1975-05-30 | 1979-07-16 | Bofors Ab | PROCEDURE FOR INDICATION OF EXHAUST CRACKS IN ELECTRIC DRAINS |
ES2020951B3 (en) * | 1986-08-12 | 1991-10-16 | Balcke-Durr Ag | PROCEDURE AND DEVICE FOR FIXING PARTS IN A HOLLOW BODY |
US5214234A (en) * | 1992-07-17 | 1993-05-25 | The United States Of America As Represented By The Secretary Of The Navy | Composite reinforced gun barrels |
-
1998
- 1998-02-06 DE DE19804651A patent/DE19804651A1/en not_active Withdrawn
- 1998-12-21 DE DE59810842T patent/DE59810842D1/en not_active Expired - Fee Related
- 1998-12-21 EP EP98124171A patent/EP0935117B1/en not_active Expired - Lifetime
-
1999
- 1999-02-08 US US09/245,924 patent/US6158158A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59810842D1 (en) | 2004-04-01 |
EP0935117A2 (en) | 1999-08-11 |
DE19804651A1 (en) | 1999-08-12 |
EP0935117A3 (en) | 2000-08-16 |
US6158158A (en) | 2000-12-12 |
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