| 发明名称 |
METHOD FOR WORKING HOLE IN CAST MEMBER AND CAST MEMBER |
| 摘要 |
PROBLEM TO BE SOLVED: To perform a highly precise shaft hole working while preventing the development of galling on the inner peripheral surface of the shaft hole. SOLUTION: A cast-forming is performed so that diameter at the tapering end of the hole 17 in the left side is different from that of the hole 19 in the right side (d1<d2) with a center partition wall 15 as the boundary. A punch 21 for pressing is inserted from the hole 17 having smaller diameter, and the partition wall 15 is punched out toward the hole 19 having larger diameter. COPYRIGHT: (C)2003,JPO
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| 申请公布号 |
JP2003275856(A) |
申请公布日期 |
2003.09.30 |
| 申请号 |
JP20020080778 |
申请日期 |
2002.03.22 |
| 申请人 |
OTSUKA KOKI CO LTD;NISSAN MOTOR CO LTD |
发明人 |
MASUDA SATORU;TSUKAMOTO YOJI;HORIUCHI MAKOTO;TOMURA HITOSHI;MURATA KENICHI |
| 分类号 |
B22D17/22;B22C9/10;B22D29/00;B22D31/00;(IPC1-7):B22D17/22 |
主分类号 |
B22D17/22 |
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