After achieving the desired shape, I cast my model in plaster to create a concave mould.
在获得我想要的形状之后，我把我的模型上了石膏，从而创造一个凹面的模具。
According to the change of technologic process, adopting the floating concave mould, bidirectional punch in the same time was realized;
针对减振器总成工艺过程的改变，采用凹模浮动，实现双向同步冲孔；
The contractile interior core pulling mould structure was designed for the molding of the concave part of inner side of outer casing of flow meter.
为成型流量计外壳内侧凹进部分，设计了收缩内抽芯模具结构。
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