发明名称 |
Method of making double-coned coil spring and apparatus therefor. |
摘要 |
<p>Disclosed are a method of and a device for making a double-coned coil spring (1), which comprises using a semi-finished spring (2) having formed on one end thereof a first conically wound portion (2a) with the rest of the wound portion (2b) being extended with the maximum diameter, and forming a second conically wound portion (2c) at the cylindrically wound portion (2b); wherein said cylindrically wound portion (2b) is clamped at the site from where formation of the second conically wound portion (2c) is to be started by means of a first clamping means (3), and also clamping the open end of said cylindrically wound portion (2b) by means of a second clamping means (18); and the second clamping means (18) is allowed to rotate in the direction of winding the semi-finished spring (2), while said second clamping means (18) is forced to be moved toward the center of the semi-finished spring (2).</p> |
申请公布号 |
EP0322605(A2) |
申请公布日期 |
1989.07.05 |
申请号 |
EP19880120427 |
申请日期 |
1988.12.07 |
申请人 |
MORITA IRON WORKS CO., LTD. |
发明人 |
MORITA, MOTOO C/O MORITA IRON WORKS CO., LTD. |
分类号 |
F16F1/04;B21F3/10;B21F35/00 |
主分类号 |
F16F1/04 |
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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