发明名称 |
Device for cold forging the hollow, spherical heads of ball-joint pivots |
摘要 |
A device is provided for precision cold forging of hollow, spherical heads of ball-joint pivots of the type used in the steering and suspension joints of automobiles, which includes a pair of hemispherical forming dies closing on a joint plane passing almost through the center of the ball-joint. One of the dies containing the pivot rod of the ball-joint pivot is clamped onto a tool-holder unit against a bearing edge situated almost on a level with the center of the ball-joint and of the joint plane, with an end part thereof receiving a thrust from a flexible element which opposes the forming pressure of the hollow, spherical head and assures that the die is permanently supported on the bearing edge. Precision cold forging of hollow, spherical forms, mass-produced with finite dimensions is thus available.
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申请公布号 |
US4073178(A) |
申请公布日期 |
1978.02.14 |
申请号 |
US19760718034 |
申请日期 |
1976.08.26 |
申请人 |
REGIE NATIONALE DES USINES RENAULT |
发明人 |
DUTARTRE, MAURICE;ROGER, YVES |
分类号 |
B21K1/44;(IPC1-7):B21D22/00 |
主分类号 |
B21K1/44 |
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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