发明名称 |
Method for manufacturing injection hole member |
摘要 |
A lead hole is formed in a base material of an injection hole member with a straight punch, and then, a taper hole is formed in the base material by widening the lead hole with a taper punch. An intersection line between a virtual plane perpendicular to a central axis of the lead hole and an inner peripheral surface of the lead hole is elliptic in shape, whose major axis is directed along an intersection line between a virtual plane, which includes the central axis of the lead hole and a thickness direction axis of the base material, and the virtual plane perpendicular to the central axis of the lead hole. An intersection line between a virtual plane perpendicular to a central axis of the taper punch and an outer peripheral surface of the taper punch is round in shape. |
申请公布号 |
US8631579(B2) |
申请公布日期 |
2014.01.21 |
申请号 |
US20110929746 |
申请日期 |
2011.02.14 |
申请人 |
MIYAGAWA MASANORI;UEHARA TSUNEHIRO;DENSO CORPORATION;KOMATSUSEIKI KOSAKUSHO CO., LTD. |
发明人 |
MIYAGAWA MASANORI;UEHARA TSUNEHIRO |
分类号 |
B21D51/16;B21D53/84;F02M51/06;F02M61/16;F02M61/18 |
主分类号 |
B21D51/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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