分析比较了预绞丝螺旋线的特点和成型工艺，介绍了绞丝模具结构和型腔加工工艺。
The processes of corresponded moulds are introduced in order to analyze and compare the characteristic and the production process of mould of performed helix.
其切削力平稳的特性更适合于模具型腔的高速数控加工，可以克服高速加工用刀具刚性差的不足。
The cutters used in high speed machining(HSM) have poor rigidity, therefore the method fits to HSM of die cavity due to the unfluctuating cutting force characteristic.
提出了模具型腔粗铣加工刀具组合方法，进行了粗铣加工走刀方式对比分析。
The paper offered the coarse milling machining combination methods of mold cavities, and contrasted and analyzed them.
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