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    • 88. 发明专利
    • Process and apparatus for the production of a propellant-charge case for cartridge ammunition
    • DE3704792A1
    • 1988-09-01
    • DE3704792
    • 1987-02-16
    • HEIDE MARION
    • LUBIG JOSEF
    • B23K15/04B23K26/08B23K26/12F42B5/285B23K15/00F42B5/28
    • In a process for the production of a propellant-charge case for cartridge ammunition for the exact cost-effective welding together of a base part and a case part of a subsequent propellant-charge case for cartridge ammunition, it is proposed that the base part pushed into the case part be pushed into the perforated orifice of a vacuum chamber and be retained there by the application of pressure to the free end face of the case part projecting from the vacuum chamber, that the vacuum chamber be evacuated after being sealed off along the outer sheath and the inner sheath of the projecting case part, and that the base part and case part be jointly set in rotation relative to the stationary electron-beam or laser-beam gun, the collar bearing on the outside of the case and/or the inside of the case sheath being welded together with the outside of the extension of the base part. Proposed, furthermore, is an apparatus, in which the vacuum chamber has a centring pin (4) for receiving the base part (1), opposite which centring pin (4) is located in an orifice having a radially deformably elastic form ring (5), and a supporting and centring device (12) arranged outside the vacuum chamber (4) and having a hollow spindle (8) bears in or on the case (2), the hollow spindle (8) having an elastic annular concertina (6) which bears sealingly on the inner-sheath side of the case.
    • 90. 发明专利
    • Recalibrating device for metal cartridge cases for firearms
    • FR2556261A1
    • 1985-06-14
    • FR8209101
    • 1982-05-26
    • BURAUX JEAN CLAUDE
    • B23P6/00F42B33/10F42B5/28
    • The invention relates to a device concentrically recalibrating the inside and outside of the collars (flanges) of metal cartridge cases. It is used in conjunction with a recharging press of known type. The device comprises (left-hand half-view of the figure): - a sleeve 1 closed by a plug 2 in which an external reforming die 3 can slide freely and can be blocked in the bottom position by a removable stop 4; - a machining spindle 5 anchored to the plug by a member 21 of known type and guided solely in the borehole 6 of the die. Under the action of the ram 7 of the press 10, the case 8 to be recalibrated penetrates into the die where it is reformed on the outside and then, after removal of the stop, the die continues its travel and the collar (flange) of the case engages around the cutting edge 11 of the spindle which machines it on the inside. In the alternative embodiment, according to the right-hand half-view, the spindle works in drawing-in mode and penetrates into the case before the reforming of the collar (flange). A removable stop is not used.