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发明名称
孔之抽缘加工方法
摘要
用冲头及模具加工金属板材料,以形成突出成筒状之抽缘部之方法中,其特征为该加工方法系由;将冲头冲入之模具孔设定为比该模具孔内周面与冲头外周面间所加工之金属板材料板厚度为大之间隙之过程,及由冲头与模具之运作使金属板材料形成突出模具孔内之有底凸出部过程,及在冲头与模具孔底面间使凸出部薄肉化,将凸出部底部材料流动至冲头与模具孔间之前述间隙内之凸出部周壁部,使该周壁部厚肉化之过程,及使前述凸出部之底部开口之过程而成。
申请公布号
TW169914
申请公布日期
1991.10.01
申请号
TW080103775
申请日期
1991.05.15
申请人
东芝股份有限公司
发明人
细野之仁
分类号
B21C37/02
主分类号
B21C37/02
代理机构
代理人
林敏生 台北巿南京东路二段一二五号七楼伟成第一大楼
主权项
用冲头及模具加工金属板材料,以形成突出成筒状之抽缘部之方法中,其特征为该加工方法系由;将冲头冲入之模具孔设定为比该模具孔内周面与冲头外周面间所加工之金属板材料板厚度为大之间隙之过程,及由冲头与模具之运作使金属板材料形成突出模具孔内之有底凸出部过程,及在冲头与模具孔底面间使凸出部薄肉化,将凸出部底部材料流动至冲头与模具孔间之前述间隙内之凸出部周壁部,使该周壁部厚肉化之过程,及使前述凸出部之底部开口之
地址
日本国神奈川县川崎巿幸区堀川町七十二番地
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