The technologic property and working procedure of the strap wheel was analyzed and the structure of the die, the character and working principle of the die were described.
分析了带轮成形工艺特性，介绍了皮带轮液压胀形模具结构，论述了模具结构特点和工作原理。
The technologic property and working procedure of the driver of the automobile fan are analyzed, and the structure, character and working principle of the mold are described.
分析了风扇传动带盘的工艺特性和工序，设计了模具结构，论述了其特点和工作原理。
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