| 摘要 |
A spin cast die assembly includes a casing, an insert and an end cap assembl y for retaining the insert against an annular shoulder within the casing. The end cap assembly has a mounting ring attached an end of the casing. The mounting ring receive s a flyweight ring which engages an end of the insert and which pivotally supports a plurality of flyweight members which are mounted radially internally with respect to the mounting ring. The mounting ring has an annular flyweight engagement surface which faces generally radially inwardly and towards the shoulder. As the assembly is spun, the inner ends o f the flyweight members pivot radially outwardly. The flyweight members thereby cooperate wi th the flyweight engagement surfaces of the mounting ring to cause the flyweight ri ng to move axially towards the insert and thereby force the insert against the shoulder .
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