介绍了挤压丝锥的设计方法及CAD系统，说明了开发软件的结构及特点。
The design process and a CAD system of extrusion taps are introduced.
在对挤压丝锥的磨损、破损特征和机理进行研究的基础上，提出了改进挤压丝锥结构的方法。
The characteristics and mechanism of wear and fracture of the tap have been researched, and a method to improve the structure of cold forming tap was also proposed in this paper.
采用振动挤压攻丝新方法对钛合金材料进行内螺纹加工，螺纹表面硬度高，丝锥损坏现象显著减小。
Adopting the new method to female thread machining, high hardness of thread can be acquired, and tap broken cases reduce significantly.
采用振动挤压攻丝新方法对钛合金材料进行内螺纹加工，螺纹表面硬度高，丝锥损坏现象显著减小。
Adopting the new method to female thread machining, high hardness of thread can be acquired, and tap broken cases reduce significantly.
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