EP0379952B1 - Gas nozzle for gas pipes - Google Patents

Gas nozzle for gas pipes Download PDF

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Publication number
EP0379952B1
EP0379952B1 EP90100885A EP90100885A EP0379952B1 EP 0379952 B1 EP0379952 B1 EP 0379952B1 EP 90100885 A EP90100885 A EP 90100885A EP 90100885 A EP90100885 A EP 90100885A EP 0379952 B1 EP0379952 B1 EP 0379952B1
Authority
EP
European Patent Office
Prior art keywords
gas
gas nozzle
nozzle
bore
bores
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
Application number
EP90100885A
Other languages
German (de)
French (fr)
Other versions
EP0379952A2 (en
EP0379952A3 (en
Inventor
Helmut Mäder
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.)
Mauser Werke Oberndorf GmbH
Original Assignee
Mauser Werke Oberndorf 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 Mauser Werke Oberndorf GmbH filed Critical Mauser Werke Oberndorf GmbH
Priority to AT90100885T priority Critical patent/ATE98012T1/en
Publication of EP0379952A2 publication Critical patent/EP0379952A2/en
Publication of EP0379952A3 publication Critical patent/EP0379952A3/en
Application granted granted Critical
Publication of EP0379952B1 publication Critical patent/EP0379952B1/en
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
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/18—Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated
    • F41A5/26—Arrangements or systems for bleeding the gas from the barrel

Definitions

  • the invention relates to a gas nozzle for gas bores in workpieces, in particular for use in gas extraction bores of weapon barrels, with a device for mounting and dismounting in / from such gas bores.
  • US-A-2,775,920 discloses an automatic on-board cannon for aircraft with a gun barrel and a locking ring attached to the gun barrel.
  • This locking ring has gas channels running parallel to the gun barrel, which are connected to the gun barrel by radial bores.
  • nozzles for pressure control are screwed into the axial gas channels.
  • the gas nozzle has a projecting pin with an external thread, onto which a dismantling tool in the form of a hollow nut with an internal thread can be screwed, and in that an assembly tool is provided with an internal bore and an external thread, which is provided with an internal thread of the nozzle bore is engaged and acts axially against the shoulder of the gas nozzle around the pin.
  • the hollow nut can have a tool engagement device for the rotary entrainment in its outwardly facing end face.
  • the lower fitting shape of the gas nozzle can be formed in one piece with the gas nozzle and have a design that deviates from the symmetrical shape.
  • an optionally straight, curved or angled nozzle bore can be provided.
  • a gas nozzle with the features of the invention facilitates both its assembly and its disassembly in a gas bore of a weapon barrel.
  • a tight fit is achieved in all operating conditions in a nozzle bore. Since the gas nozzle is fitted into the recess by means of a threaded screw connection with the assembly tool, tilting of the gas nozzle or pressing up is avoided in principle. Due to the fits on the lower end of the gas nozzle, this gas nozzle only ever fits into a recess provided for it, while at the same time ensuring a correct fit with respect to the nozzle bore and the gas bore.
  • the gas nozzle 1 consists of a cylindrical base body with a lower end face 2, which has a fit 5 or 5.1 corresponding to Figures 3 and 4. These fits 5 and 5.1 of the gas nozzle 1 are inserted into corresponding recesses in the workpiece 9 and permit the insertion of a gas nozzle 1 only in the recess provided for them. In addition, this always results in the same axis between the nozzle bores 13 and the gas bore 10.
  • the upper end face 4 of the gas nozzle 1 has a pin 3 with an external thread 6 and with a tool engagement device 11 for the rotary entrainment of the gas nozzle 1.
  • the external thread 6 serves to receive a screw-on dismantling tool 14 in the form of a hollow nut with an internal thread 15.
  • the gas nozzle 1 is therefore dismantled by unscrewing the tool 14 and pulling the gas nozzle 1 out of the nozzle bore 13 after the assembly tool 12 has been removed.
  • the assembly tool 12 has an external thread 8 and can be screwed into the internal thread 7 of the nozzle bore 13.
  • the assembly tool 12 is in contact with its axial end face on the shoulder 16 of the gas nozzle 1 around the pin 3.
  • the nozzle 1 shown in FIG. 1 shows a rectilinear inner nozzle passage bore 17 which is connected at its opposite ends to a gas extraction bore 10 of the workpiece 9.
  • the workpiece 9 is a weapon barrel in the example shown.
  • a total of three gas nozzles 1 are arranged at an angle of 120 ° to one another on a cross-sectional area.
  • other arrangements and other quantities of gas nozzles in a cross-sectional plane are also possible.
  • the fits 5 and 5.1 according to FIGS. 3 and 4 can be formed differently.
  • the fits 5 and 5.1 formed in one piece with the gas nozzle 1 are designed in a design that deviates from the symmetrical shape.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The invention shows a gas nozzle (1) having a pin (3) with an external thread (6), onto which a dismounting tool can be screwed. The mounting tool (12) has an external thread (8), thus ensuring a firm fit of the gas nozzle (1) in a recess of a workpiece (9). The gas nozzle possesses, furthermore, a fitting form (5, 5.1) as rotation prevention and as a safeguard against installing the wrong gas nozzle (1). <IMAGE>

Description

Die Erfindung betrifft eine Gasdüse für Gasbohrungen in Werkstücken, insbesondere für den Einsatz in Gasentnahmebohrungen von Waffenrohren, mit einer Einrichtung zur Montage und Demontage in/aus solchen Gasbohrungen.The invention relates to a gas nozzle for gas bores in workpieces, in particular for use in gas extraction bores of weapon barrels, with a device for mounting and dismounting in / from such gas bores.

In der Praxis ist es allgemein bekannt, daß die in Gasentnahmebohrungen von Waffenrohren eingesetzten Gasdüsen in entsprechende Ausnehmungen des Werkstückes mit einem Pressitz oder Schiebesitz eingesetzt werden. Dabei hat es sich als nachteilig herausgestellt, daß sich vor allem bei der Anwendung in Waffenrohren auf der Unterseite der Düse Schmutz und auch Pulverschleim absetzen konnte. Diese Verunreinigungen verursachen ein langsames Hochdrücken der Gasdüse und teilweise ein Verkanten derselben, wodurch der Gasdurchgang verschlechtert bis unmöglich gemacht wurde. Außerdem bereitete es eine besondere Mühe und regelmäßig Spezialwerkzeuge, um solche eingepreßten Gasdüsen nach längerem Gebrauch aus der Ausnehmung des Werkstückes herauszubringen.In practice, it is generally known that the gas nozzles used in gas extraction bores of gun barrels are inserted into corresponding recesses in the workpiece with a press fit or sliding fit. It has turned out to be disadvantageous that dirt and powdery slime could settle on the underside of the nozzle, especially when used in gun barrels. These contaminants cause the gas nozzle to be slowly pushed up and partially tilted, making the passage of gas worse or impossible. In addition, it made a special effort and regularly special tools to bring such injected gas nozzles out of the recess of the workpiece after long use.

Die US-A-2,775,920 offenbart eine automatische Bordkanone für Luftfahrzeuge mit einem Waffenrohr und einem am Waffenrohr befestigten Verschlußring. Dieser Verschlußring weist parallel zum Waffenrohr verlaufende Gaskanäle auf, die über radiale Bohrungen mit dem Waffenrohr in Verbindung stehen. Verschlußseitig sind in die axialen Gaskanäle Düsen für die Drucksteuerung eingeschraubt.US-A-2,775,920 discloses an automatic on-board cannon for aircraft with a gun barrel and a locking ring attached to the gun barrel. This locking ring has gas channels running parallel to the gun barrel, which are connected to the gun barrel by radial bores. On the closure side, nozzles for pressure control are screwed into the axial gas channels.

Ausgehend von dem vorgenannten Stand der Technik ist es Aufgabe der Erfindung, eine Gasdüse der eingangs genannten Art zu schaffen, bei welcher auch im längeren Betrieb ein Verkanten oder Hochdrücken der Gasdüse verhindert und die Möglichkeit des einfachen Einsatzes und der einfachen Herausnahme der Gasdüse aus der Ausnehmung des Werkstückes gewährleistet ist.Based on the aforementioned prior art, it is an object of the invention to provide a gas nozzle of the type mentioned, in which tilting or pushing up of the gas nozzle is prevented even in prolonged operation, and the possibility of simple use and simple removal of the gas nozzle from the recess the workpiece is guaranteed.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Gasdüse einen vorstehenden Zapfen mit einem Außengewinde aufweist, auf das ein Demontagewerkzeug in Form einer Hohlmutter mit Innengewinde aufschraubbar ist, und daß ein Montagewerkzeug mit einer Innenbohrung und einem Außengewinde vorgesehen ist, welches mit einem Innengewinde der Düsenbohrung im Eingriff steht und axial gegen die Schulter der Gasdüse um den Zapfen wirkt.According to the invention, this object is achieved in that the gas nozzle has a projecting pin with an external thread, onto which a dismantling tool in the form of a hollow nut with an internal thread can be screwed, and in that an assembly tool is provided with an internal bore and an external thread, which is provided with an internal thread of the nozzle bore is engaged and acts axially against the shoulder of the gas nozzle around the pin.

Dabei kann die Hohlmutter in ihrer nach außen gewandten Stirnfläche eine Werkzeugeingriffseinrichtung für die Drehmitnahme aufweisen. Die untere Pass-Form der Gasdüse kann einstückig mit der Gasdüse gebildet sein und eine von der symmetrischen Form abweichende Gestaltung besitzen. Schließlich kann eine wahlweise geradlinie, gebogene oder abgewinkelte Düsenbohrung vorgesehen sein.The hollow nut can have a tool engagement device for the rotary entrainment in its outwardly facing end face. The lower fitting shape of the gas nozzle can be formed in one piece with the gas nozzle and have a design that deviates from the symmetrical shape. Finally, an optionally straight, curved or angled nozzle bore can be provided.

Eine Gasdüse mit den erfindungsgemäßen Merkmalen erleichtert sowohl ihre Montage als auch ihre Demontage in eine Gasbohrung eines Waffenrohres. Dabei wird ein fester Sitz bei allen auftretenden Betriebsbedingungen in einer Düsenbohrung erzielt. Da die Gasdüse durch eine Gewindeverschraubung mit dem Montagewerkzeug in die Ausnehmung eingepaßt ist, wird ein Verkanten der Gasdüse oder ein Hochdrücken grundsätzlich vermieden. Aufgrund der Passformen an der unteren Stirnseite der Gasdüse paßt diese Gasdüse immer nur in eine nur für sie vorgesehene Ausnehmung, wobei zugleich ein richtiger Sitz in Bezug auf die Düsenbohrung und die Gasbohrung gewährleistet wird.A gas nozzle with the features of the invention facilitates both its assembly and its disassembly in a gas bore of a weapon barrel. A tight fit is achieved in all operating conditions in a nozzle bore. Since the gas nozzle is fitted into the recess by means of a threaded screw connection with the assembly tool, tilting of the gas nozzle or pressing up is avoided in principle. Due to the fits on the lower end of the gas nozzle, this gas nozzle only ever fits into a recess provided for it, while at the same time ensuring a correct fit with respect to the nozzle bore and the gas bore.

In der Zeichnung ist ein Beispiel der Erfindung dargestellt. Es zeigen:

Fig. 1
eine Gasdüse in einer Gasbohrung eines Werkstückes im Schnitt
Fig. 2
einen Schnitt durch die Gasdüse entsprechend der Linie II-II in Fig. 1
Fig. 3
eine Draufsicht auf die Unterseite der Gasdüse gemäß dem Pfeil III in Fig. 1
Fig. 4
eine Draufsicht auf die untere Stirnseite der Gasdüse mit zur Fig. 3 unterschiedlichen Passform.
An example of the invention is shown in the drawing. Show it:
Fig. 1
a gas nozzle in a gas hole of a workpiece in section
Fig. 2
a section through the gas nozzle along the line II-II in Fig. 1st
Fig. 3
a plan view of the underside of the gas nozzle according to the arrow III in Fig. 1st
Fig. 4
a plan view of the lower end face of the gas nozzle with a different fit to FIG. 3.

Die Gasdüse 1 besteht aus einem zylindrischen Grundkörper mit einer unteren Stirnfläche 2, die eine Passform 5 bzw. 5.1 entsprechend den Figuren 3 und 4 besitzt. Diese Passformen 5 bzw. 5.1 der Gasdüse 1 sind in entsprechende Ausnehmungen des Werkstückes 9 eingesetzt und erlauben das Einsetzen einer Gasdüse 1 immer nur in die für sie vorgesehene Ausnehmung. Außerdem wird dadurch stets Achsgleichheit zwischen den Düsenbohrungen 13 und der Gasbohrung 10 erzielt.The gas nozzle 1 consists of a cylindrical base body with a lower end face 2, which has a fit 5 or 5.1 corresponding to Figures 3 and 4. These fits 5 and 5.1 of the gas nozzle 1 are inserted into corresponding recesses in the workpiece 9 and permit the insertion of a gas nozzle 1 only in the recess provided for them. In addition, this always results in the same axis between the nozzle bores 13 and the gas bore 10.

Die obere Stirnseite 4 der Gasdüse 1 weist einen Zapfen 3 mit einem Außengewinde 6 und mit einer Werkzeugeingriffseinrichtung 11 für die Drehmitnahme der Gasdüse 1 auf. Das Außengewinde 6 dient zur Aufnahme eines aufschraubbaren Demontagewerkzeuges 14 in Form einer Hohlmutter mit einem Innengewinde 15. Die Demontage der Gasdüse 1 erfolgt demzufolge durch Aufschrauben des Werkzeuges 14 und Herausziehen der Gasdüse 1 aus der Düsenbohrung 13, nachdem das Montagewerkzeug 12 entfernt wurde. Das Montagewerkzeug 12 besitzt ein Außengewinde 8 und ist in das Innengewinde 7 der Düsenbohrung 13 einschraubbar. Dabei steht das Montagewerkzeug 12 mit seiner axialen Stirnseite auf der Schulter 16 der Gasdüse 1 um den Zapfen 3 an. Dies bedeutet, daß die Gasdüse 1 mit dem Montagewerkzeug 12 fest in die untere Paßform 5 oder 5.1 anpreßbar ist, so daß eine einwandfreie Durchlaßöffnung in der Gasdüse 1 mit der Gasbohrung 10 erfolgt. Die Schraubverbindung zwischen dem Montagewerkzeug 12 und dem Werkstück 9 gewährleistet einen guten und bleibenden Sitz der Gasdüse 1 auch bei Betriebsbelastungen.The upper end face 4 of the gas nozzle 1 has a pin 3 with an external thread 6 and with a tool engagement device 11 for the rotary entrainment of the gas nozzle 1. The external thread 6 serves to receive a screw-on dismantling tool 14 in the form of a hollow nut with an internal thread 15. The gas nozzle 1 is therefore dismantled by unscrewing the tool 14 and pulling the gas nozzle 1 out of the nozzle bore 13 after the assembly tool 12 has been removed. The assembly tool 12 has an external thread 8 and can be screwed into the internal thread 7 of the nozzle bore 13. The assembly tool 12 is in contact with its axial end face on the shoulder 16 of the gas nozzle 1 around the pin 3. This means that the gas nozzle 1 with the assembly tool 12 can be pressed firmly into the lower fit 5 or 5.1, so that a perfect passage opening in the gas nozzle 1 with the gas bore 10 takes place. The screw connection between the assembly tool 12 and the workpiece 9 ensures a good and permanent fit of the gas nozzle 1 even under operating loads.

Die in Fig. 1 dargestellte Düse 1 zeigt eine geradlinige innere Düsendurchlaßbohrung 17, die an ihren gegenüberliegenden Enden mit einer Gasentnahmebohrung 10 des Werkstückes 9 in Verbindung steht. Das Werkstück 9 ist in dem dargestellten Beispiel ein Waffenrohr.The nozzle 1 shown in FIG. 1 shows a rectilinear inner nozzle passage bore 17 which is connected at its opposite ends to a gas extraction bore 10 of the workpiece 9. The workpiece 9 is a weapon barrel in the example shown.

Wie Fig. 2 zeigt, sind in dem dargestellten Beispiel auf einer Querschnittsfläche insgesamt drei Gasdüsen 1 in einem Winkel von jeweils 120° zueinander angeordnet. Selbstverständlich sind auch andere Anordnungen und andere Mengen von Gasdüsen in einer Querschnittsebene möglich.As shown in FIG. 2, in the example shown, a total of three gas nozzles 1 are arranged at an angle of 120 ° to one another on a cross-sectional area. Of course, other arrangements and other quantities of gas nozzles in a cross-sectional plane are also possible.

Die Passformen 5 bzw. 5.1 nach den Figuren 3 und 4 können unterschiedlich gebildet sind. Um eine einwandfreie Zuordnung der Gasdüse über diese Passformen 5 bzw. 5.1 zu erzielen, sind die einstückig mit der Gasdüse 1 gebildeten Passformen 5 bzw. 5.1 in einer von der symmetrischen Form abweichenden Gestaltung ausgeführt.The fits 5 and 5.1 according to FIGS. 3 and 4 can be formed differently. In order to achieve a correct assignment of the gas nozzle via these fits 5 and 5.1, the fits 5 and 5.1 formed in one piece with the gas nozzle 1 are designed in a design that deviates from the symmetrical shape.

Claims (5)

  1. Gas nozzle (1) for gas bores (10) in workpieces, in particular for using gas removal bores of weapon barrels, having a device for assembly and for disassembly in/from such gas bores (10), characterized in that the gas nozzle (1) is provided with a centrally projecting pin (3) having an external thread (6) on which a disassembly tool in the form of a hollow nut (14) can be screwed by means of its internal thread (15), and in that an assembly tool (12) is provided with an internal bore and an external thread (8) which engages with an internal thread (7) of the nozzle bore (13) and acts in axial opposition to the shoulder (16) of the gas nozzle (1).
  2. Gas nozzle according to Claim 1, characterized in that the lower end face (2) opposite the pin (3) of the gas nozzle (1) has a shape for fitting (5, 5.1).
  3. Gas nozzle according to Claim 1, characterized in that the pin (3) of the gas nozzle (1) has a tool engaging device (11) on its outer end face (4) for rotary entrainment.
  4. Gas nozzle according to Claims 1 and 2, characterized in that the shape for fitting (5, 5.1) is formed in one piece with the gas nozzle (1) and has a form which differs from the symmetrical shape in such a way that when the gas nozzle (1) is installed axial alignment between the nozzle bore (13) and the gas bore (10) is produced.
  5. Gas nozzle according to Claims 1 to 4, characterized in that a nozzle bore (13) which is optionally rectilinear, curved or angled is provided.
EP90100885A 1989-01-25 1990-01-17 Gas nozzle for gas pipes Expired - Lifetime EP0379952B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90100885T ATE98012T1 (en) 1989-01-25 1990-01-17 GAS NOZZLE FOR GAS DRILLING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3902014 1989-01-25
DE3902014A DE3902014A1 (en) 1989-01-25 1989-01-25 GAS NOZZLE FOR GAS HOLES

Publications (3)

Publication Number Publication Date
EP0379952A2 EP0379952A2 (en) 1990-08-01
EP0379952A3 EP0379952A3 (en) 1991-09-25
EP0379952B1 true EP0379952B1 (en) 1993-12-01

Family

ID=6372680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100885A Expired - Lifetime EP0379952B1 (en) 1989-01-25 1990-01-17 Gas nozzle for gas pipes

Country Status (4)

Country Link
EP (1) EP0379952B1 (en)
AT (1) ATE98012T1 (en)
DE (2) DE3902014A1 (en)
ES (1) ES2047715T3 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1808052A (en) * 1931-01-31 1931-06-02 George M Mccann Gun
US2775920A (en) * 1950-05-01 1957-01-01 Paul H Dixon Bolt spline
DE2249545A1 (en) * 1972-10-10 1974-04-18 Eta Corp MACHINE GUN OF THE GAS PRESSURE CHARGING SYSTEM

Also Published As

Publication number Publication date
ES2047715T3 (en) 1994-03-01
DE3902014A1 (en) 1990-07-26
EP0379952A2 (en) 1990-08-01
ATE98012T1 (en) 1993-12-15
DE59003638D1 (en) 1994-01-13
EP0379952A3 (en) 1991-09-25

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