锥柄扩孔钻
The molding size was designed according to the average shrinkage ratio of polystyrene, demoulding mechanism of taper microgroove and arc side core-pulling mechanism was used in the mold.
按聚苯乙烯的平均收缩率设计计算模具成形尺寸,在模具中设计了圆锥细纹脱模机构、弧形侧抽芯机构。
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