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    • 3. 发明申请
    • METHOD OF MANUFACTURING CARTRIDGE CASES
    • 制造盒子的方法
    • WO1982000424A1
    • 1982-02-18
    • PCT/US1981000988
    • 1981-07-24
    • REAGENT CHEM & RES INC
    • REAGENT CHEM & RES INCHICKE D
    • B21D51/54
    • B21D22/21B21D51/54B21K21/04
    • Method of manufacturing cartridge cases (10) which method comprises the steps of providing a cup-shaped article (12) having a side wall (14) defined by inner (50) and outer (15) side wall surfaces, a bottom wall (18) defined by inner and outer (16) bottom wall surfaces, and an open upper end, and the step of engaging said cup-shaped article with a punch element (20) and using said punch element (20) to force said cup-shaped article (12) through a series of die members (22, 24, 26) to produce said cartridge case (10). The method is characterized by the fact that the p punch element (20) and die members (22, 24, 26) are of predetermined dimensions in relation to the dimensions of the cup-shaped article (12) so that the cup-shaped article (12) is only subjected to ironing during passage through the die members (22, 24, 26) during the engaging and forcing step to thereby increase the length of the side wall (14) of the cup-shaped article (12) while reducing the thickness of the side wall (14) of the cup-shaped article (12) and so that the thickness of the side wall (14) of the cup-shaped article (12) at a point adjacent the upper open end thereof is reduced during passage through the die members (22, 24, 26) by at least 65%, and is further characterized by the fact that the engaging and forcing step is performed without annealing the cup-shaped article (12) after passage through any of said die members (22, 24, 26).
    • 制造盒壳(10)的方法包括以下步骤:提供具有由内(50)和外(15)侧壁表面限定的侧壁(14)的杯形制品(12),底壁 )和内部和外部(16)底壁表面和敞开的上端限定的步骤,以及使所述杯形制品与冲压元件(20)接合并使用所述冲压元件(20)以迫使所述杯形 (12)通过一系列模具构件(22,24,26)以产生所述盒壳体(10)。 该方法的特征在于,p冲击元件(20)和模具构件(22,24,26)相对于杯形制品(12)的尺寸具有预定尺寸,使得杯形制品 (12)在接合和加压步骤期间仅在通过模具构件(22,24,26)期间经受熨烫,从而增加杯形制品(12)的侧壁(14)的长度,同时减少 杯形物品(12)的侧壁(14)的厚度和杯形物品(12)的与其上开口端相邻的点的侧壁(14)的厚度减小 在通过所述模具构件(22,24,26)期间至少65%时,进一步的特征在于,所述接合和迫动步骤在通过所述杯形物品(12)之后不退火所述杯状物品 模具构件(22,24,26)。