发明名称 |
DIE SET |
摘要 |
PROBLEM TO BE SOLVED: To provide a die set for a differential step bending, which securely provides an exact shape and dimensions of a required differential step bent without occurrence of any crack and fissure or tear off at bent corners. SOLUTION: The die set is composed of a blanking punch 32 to form a through hole for forming a patch near the differential step bent of a work 1 and an upper die vertically movably providing a differential step bending punch 33 and a lower die that faces the upper die and installs a differential step bending die 43 as well as a punching hole 51 mounted on a die plate 47. This configuration allows the work 1 to elongate smoothly and sufficiently around the bent portion of the differential step.
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申请公布号 |
JP2002192263(A) |
申请公布日期 |
2002.07.10 |
申请号 |
JP20000400457 |
申请日期 |
2000.12.28 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
MORITA HIDEO;YAMASHITA TATSUHIKO |
分类号 |
B21D28/26;B21D5/01;B21D35/00;(IPC1-7):B21D35/00 |
主分类号 |
B21D28/26 |
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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