Abrégé

A method for forming a set of gun barrels, comprises: machining an elongate key along a length of a metal billet; mounting the metal billet on a machining jig, clamped along the key; performing CNC milling operations on the mounted metal billet in a 5-axis CNC milling machine to form a set of gun barrels having a pair of bores and a rib, the rib extending lengthwise proximate the elongate key; and, separating the set of gun barrels from the key along the length of the rib section. The present invention provides for significantly faster machine production with no manual handling of the workpiece throughout the milling operations. This makes the milling operations more accurate as the workpiece remains in position throughout, without reloading. Holding the workpiece along a key which runs the length of what will become the rib of the barrels avoids any loading of the workpiece in areas that need to be machined. The use of a 5-axis CNC milling machine allows for variable geometries to adjust the finished shape and configuration of the gun barrels.

Classes IPC  ?

• F41A 21/06 - Tubes d'arme multiples
• B23B 41/02 - Machines ou dispositifs à aléser ou à percer spécialement adaptés à un travail particulier; Accessoires spécialement conçus à cet effet pour aléser à l'aide de forets couronnes, p.ex. des canons de fusils ou de carabines

Abrégé

A method for forming a set of gun barrels, comprises: machining an elongate key along a length of a metal billet; mounting the metal billet on a machining jig, clamped along the key; performing CNC milling operations on the mounted metal billet in a 5-axis CNC milling machine to form a set of gun barrels having a pair of bores and a rib, the rib extending lengthwise proximate the elongate key; and, separating the set of gun barrels from the key along the length of the rib section. The present invention provides for significantly faster machine production with no manual handling of the workpiece throughout the milling operations. This makes the milling operations more accurate as the workpiece remains in position throughout, without reloading. Holding the workpiece along a key which runs the length of what will become the rib of the barrels avoids any loading of the workpiece in areas that need to be machined. The use of a 5-axis CNC milling machine allows for variable geometries to adjust the finished shape and configuration of the gun barrels.

Classes IPC  ?

• B21C 37/15 - Fabrication de tubes de formes particulières; Fabrication de garnitures de tubes
• B23B 41/02 - Machines ou dispositifs à aléser ou à percer spécialement adaptés à un travail particulier; Accessoires spécialement conçus à cet effet pour aléser à l'aide de forets couronnes, p.ex. des canons de fusils ou de carabines
• F41A 21/06 - Tubes d'arme multiples

Abrégé

Disclosed herein is a method of manufacturing two or more gun barrels, the method comprising: machining (103) a single metal block to form a barrel preform having the outer shape of at least a first gun barrel and a second gun barrel; drilling (105) a first hole through the first gun barrel to form a first barrel bore; and drilling (107) a second hole through the second gun barrel to form a second barrel bore. Advantages include the barrels being integrally attached to each other and so a soldering operation to attach the barrels to each other is avoided.

Classes IPC  ?

• F41A 21/06 - Tubes d'arme multiples

Abrégé

Disclosed herein is a method of manufacturing two or more gun barrels, the method comprising: machining (103) a single metal block to form a barrel preform having the outer shape of at least a first gun barrel and a second gun barrel; drilling (105) a first hole through the first gun barrel to form a first barrel bore; and drilling (107) a second hole through the second gun barrel to form a second barrel bore. Advantages include the barrels being integrally attached to each other and so a soldering operation to attach the barrels to each other is avoided.

Classes IPC  ?

• B64D 1/04 - Largage ou éjection d'objets les objets étant explosifs, p.ex. des bombes
• B23B 35/00 - Méthodes d'alésage ou de perçage ou autres méthodes de travail impliquant l'utilisation de machines à aléser ou à percer; Utilisation d'équipements auxiliaires en relation avec ces méthodes
• F41A 21/06 - Tubes d'arme multiples
• F41A 21/08 - Raccordements des tubes
• B23P 15/00 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe