The closing_in process of union nut assembly is analyzed and the structure, working principle and application on the lathe of the rolling closing_in tool are introduced in this paper.
分析了管螺母组件收口工艺，介绍了滚压收口工具的结构、工作原理及其在车床上的应用。
The way expands machining range of floor type boring lathe. The hard nut to crack that can't process and restore mill housing with the old machine in our company was resolved.
改进后的落地镗床具有加工较大范围的镗铣功能，解决了湘钢机制公司不能加工和修复轧机机架的难题。
The way expands machining range of floor type boring lathe. The hard nut to crack that can't process and restore mill housing with the old machine …
改进后的落地镗床具有加工较大范围的镗铣功能，解决了湘钢机制公司不能加工和修复轧机机架的难题。
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