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1. 发明授权

EP2205378B1 CORE ROD FORGING FOR PRECISE INTERNAL GEOMETRY 有权
标题翻译：核心棒锻造精密内部几何
公开(公告)号：EP2205378B1
公开(公告)日：2018-01-17
申请号：EP08840608.7
申请日：2008-10-17
申请人： GKN SINTER METALS, LLC
发明人： KNOTT, Henry, J.
IPC分类号： B21J13/02
CPC分类号： B21J5/12 , B21J5/002 , B21J13/00 , B21K1/30 , B21K1/305
摘要： A forging die tool set defines a cavity and includes a core rod in the cavity for shaping a void in a work piece. The core rod extends in a direction in which the work piece is introduced, compressed, and ejected from the cavity. The core rod includes an upper portion and a lower portion. The upper portion has a cross sectional shape that forms a certain shape in the work piece and a radially tapered section that tapers toward the lower portion of the core rod. The lower portion also has a cross sectional shape that forms a certain shape in the work piece, and the cross sectional shape of the upper portion differs from the cross sectional shape of the lower portion, the lower portion being a more wear resistant shape characterized by larger radii and the upper portion being a finishing shape with smaller radii for shaping the final form of the forged work piece.

2. 发明公开

EP2205378A2 CORE ROD FORGING FOR PRECISE INTERNAL GEOMETRY 有权
标题翻译： KERNSTABSCHMIEDENFÜRPRESZISE INNERE GEOMETRIE
公开(公告)号：EP2205378A2
公开(公告)日：2010-07-14
申请号：EP08840608.7
申请日：2008-10-17
申请人： GKN SINTER METALS, LLC
发明人： KNOTT, Henry, J.
IPC分类号： B21J13/02
CPC分类号： B21J5/12 , B21J5/002 , B21J13/00 , B21K1/30 , B21K1/305
摘要： A forging die tool set defines a cavity and includes a core rod in the cavity for shaping a void in a work piece. The core rod extends in a direction in which the work piece is introduced, compressed, and ejected from the cavity. The core rod includes an upper portion and a lower portion. The upper portion has a cross sectional shape that forms a certain shape in the work piece and a radially tapered section that tapers toward the lower portion of the core rod. The lower portion also has a cross sectional shape that forms a certain shape in the work piece, and the cross sectional shape of the upper portion differs from the cross sectional shape of the lower portion, the lower portion being a more wear resistant shape characterized by larger radii and the upper portion being a finishing shape with smaller radii for shaping the final form of the forged work piece.
摘要翻译：锻造模具工具组限定了空腔，并且在空腔中包括用于使工件中的空隙成形的芯棒。芯棒沿着工件被引入，压缩并从空腔喷出的方向延伸。芯棒包括上部和下部。上部具有在工件中形成一定形状的横截面形状和朝向芯棒的下部逐渐变细的径向锥形部。下部还具有在工件中形成一定形状的截面形状，上部的横截面形状与下部的截面形状不同，下部具有更耐磨损的形状，其特征在于，较大的半径，上部是具有较小半径的精加工形状，用于成形锻造工件的最终形式。

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