发明名称 Forging method and forging apparatus
摘要 A forging method and forging apparatus able to improve a dimensional precision of a forged article and able to reduce the machining processes to a minimum and thereby reduce costs are provided. That is, a forging method placing a workpiece inside of a die, pressing the workpiece by a top part of the die in the axial direction toward the bottom part side of the die, and making the material of the end face of the workpiece flow to form the end face of the workpiece into a recessed/projecting shape, which forging method characterized by using independent pressing and holding means for pressing and holding the workpiece in the axial direction independent for the top part and the bottom part at the time of the press forming.
申请公布号 US8037731(B2) 申请公布日期 2011.10.18
申请号 US20070905265 申请日期 2007.09.28
申请人 DENSO CORPORATION 发明人 YABUKI TETSUROU;SATO HIDEYUKI;FUJII HIROYUKI
分类号 B21D22/00;B21J13/00 主分类号 B21D22/00
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