Method and arrangement for producing propellant for charges...

F - Mech Eng,Light,Heat,Weapons – 42 – B

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F42B 1/00 (2006.01)

Patent

CA 2548531

The present invention relates to a method and an arrangement for the production of radially perforated, cylindrical propellant tubes (1, 23, 31). The invention is based on the underlying idea that the respective propellant tube (1, 23, 31) must be fixed and centred between its own open ends and thereafter to be perforated in stages in a large number of consecutive perforation operations by means of one or more pins (13) capable of displacement in a pin die (10) relative to the propellant tube towards and at least through the major proportion of the cylindrical wall of the propellant tube. Also included in the invention is the requirement for the displacement, between each perforation operation, of the propellant tube and the pin die (10) used for the preparation operation in such a way relative to one another that the propellant tube, after a complete perforation operation, shall be covered in its entirely by perforations (32, 33, 35, 36), which lie at a predetermined e-dimension distance from one another.

La présente invention concerne un procédé et une installation de production de tubes pour agent propulsif cylindriques radialement perforés (1, 23, 31). Cette invention repose sur l'idée de base que le tube pour agent propulsif correspondant (1, 23, 31) doit être fixé et centré entre ses propres extrémités ouvertes avant d'être perforé par étapes dans un grand nombre d'opérations de perforation consécutives au moyen d'un ou plusieurs tenons (13) capables de se déplacer dans une matrice de tenons (10) par rapport au tube pour agent propulsif en direction de la majeure partie de la paroi cylindrique du tube pour agent propulsif et au moins à travers celle-ci. Cette invention porte également sur la nécessité du déplacement, entre chaque opération de perforation, du tube pour agent propulsif et de la matrice de tenons (10) utilisée pour l'opération de perforation l'un par rapport à l'autre de façon que le tube pour agent propulsif, après une opération de perforation complète, soit intégralement recouvert de perforations (32, 33, 35 36) qui sont séparées les unes des autres d'une distance prédéterminée de dimension (e).

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