发明名称 |
Method of forging flanged shaft |
摘要 |
A forging method for producing a flanged shaft such as, for example, a crankshaft, provided at its intermediate portion with a flange with the flanged shaft being formed from a blank having a diameter which is smaller than the diameter of the shaft end portions but large enough to prevent buckling of the blank when the latter is compressed in the axial direction. The blank is placed within a closed die apparatus and is axially compressed by a punch so that it is possible to produce the flanged shaft at a high dimensional precision and at a high yield, while reducing the time and labor for finishing work conducted after the forging, without requiring any large-size press.
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申请公布号 |
US4571977(A) |
申请公布日期 |
1986.02.25 |
申请号 |
US19820420892 |
申请日期 |
1982.09.21 |
申请人 |
HITACHI, LTD. |
发明人 |
UENO, KEII;UEDA, MASANOBU;TANIKAWA, MINORU;SUZUKI, MASAMI |
分类号 |
B21K1/06;B21K1/08;(IPC1-7):B21D37/16;B21D22/00 |
主分类号 |
B21K1/06 |
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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