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    • 1. 发明申请
    • TOOL AND PROCESS FOR PRODUCING A HOLLOW PART
    • 工具及其制造方法中空部分
    • WO2009027789A2
    • 2009-03-05
    • PCT/IB2008002189
    • 2008-08-24
    • IFUTEC INGENIEURBUERO FUER UMFSTIFTUNG FACHHOCHSCHULE OSNABRRAUSCHNABEL EBERHARDADAMS BERNHARDJUHR KARSTEN
    • RAUSCHNABEL EBERHARDADAMS BERNHARDJUHR KARSTEN
    • B21K23/04B21C37/205B21D17/025B21J5/08
    • The invention relates to a tool and also to a process for producing a hollow part. According to the invention, the tool has a first die (2a, 2b) which is assigned a second adjustable die (3) which, in turn, is subdivided into a plurality of displaceably mounted segments (3a, 3b, 3c, 3d), wherein the segments support, in particular in the radial direction, a hollow part (1) to be produced during plastic shaping thereof on several sides, and wherein the segments can be adjusted, in particular in the radial direction, in particular during plastic shaping of the hollow part. In the process according to the invention, a first process step involves the hollow part (1) being inserted into a first die (2) which annularly surrounds and supports the hollow part in a supporting region along the lateral surface thereof, and a second process step involves the hollow part being upset in the direction of its main axis in such a way that the hollow part (1) is shaped in a region (U) which is not supported by the first die (2), wherein the hollow part is supported on the outside in the region of a second, geometrically adjustable or variable die (3). The process can be used, for example, for producing hollow shafts.
    • 本发明涉及一种工具,用于制造空心部分的方法。 根据本发明的第一裸片,所述工具包括(2A,2B),其被分配一个第二可调模具(3),进而,为多个可滑动地安装段(图3a,3b,3c和3d)的细分,其中,所述节段至 塑料上的几个侧面上成形,在径向方向上在特定的支持,并在无理中空部件(1),其特征在于所述段特别是在径向方向上的空心部的塑料成形过程中是可调节的,尤其如此。 在第一过程中的本发明的方法步骤中,中空部件(1)插入其中环形包围在支撑区域内的中空部沿其圆周表面与被支撑,并且其中在第二处理中的方向步骤中,中空部分的第一模具(2)其 长轴被压缩以这样的方式即 - 在第二区域中的中空部,可调节在它们的几何形状或可变矩阵( - 中空部件(1)在所述第一管芯(2)区域(U)中的一个是机械加工成形,其特征在于,不支持 3)被支撑在外部。 应用实例生产空心轴。