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2. 发明公开

EP0352518A2 Method of manufacturing a single-piece valve sleeve 失效
标题翻译： Verfahren zur Herstellung einer einteiligen Ventilbuchse。
公开(公告)号：EP0352518A2
公开(公告)日：1990-01-31
申请号：EP89112324.2
申请日：1989-07-06
申请人： TOKAI TRW & CO., LTD.
发明人： Iwata, Masahito
IPC分类号： B21K1/20 , B21J5/12 , B29D1/00
CPC分类号： B29D1/00 , B21K1/20 , B23P15/001
摘要： A method of manufacturing a single-piece valve sleeve, including the steps of plastic-working a workpiece (1) thereby to form in the workpiece (1) a blind bore and a plurality of grooves (2) in the surface of the bore, the grooves (2) extending lengthwise of the bore (3) and having one closed end at the bottom of the bore (3) and an open end at the mouth of the bore; plastic-working a portion of the workpiece (1) at the bottom of the bore (3) so as to form a through hole in the workpiece (1); and plastic-working an inner portion of the workpiece adjacent the mouth (6) of the bore (3) thereby to form an uplift portion (16) so as to close the open end of the grooves (2) wherein the inner portion of the workpiece is press-deformed with a punch and the uplift portion (16) is guided by a mandrel from opposite direction of the punch.
摘要翻译：一种制造单件式阀套筒的方法，包括以下步骤：对工件（1）进行塑性加工，从而在工件（1）上形成盲孔和孔的表面中的多个凹槽（2）所述凹槽（2）沿所述孔（3）的纵向延伸并且在所述孔（3）的底部处具有一个封闭端，并且在所述孔的口处具有开口端; 在孔（3）的底部对工件（1）的一部分进行塑性加工，以在工件（1）上形成通孔; 并且与邻近孔（3）的口部（6）的工件的内部部分进行塑性加工，从而形成隆起部分（16），以封闭凹槽（2）的开口端，其中，工件用冲头压制变形，并且提升部分（16）由心轴从冲头的相反方向引导。

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