悬索桥索鞍索槽曲面数控加工技术研究与探讨

Research and Discussion on NC Machining Technology of Saddle Cable Groove Surface of Suspension Bridge Cable

索鞍是悬索桥主缆系统的重要受力构件,索鞍具有结构复杂、体量大、尺寸精度高的特点,其中索鞍索槽为三维空间复杂曲面,加工精度等级非常高,其加工工艺涉及到数控编程、曲面检测等工序,已特大型悬索桥主索鞍、散索鞍鞍体为例,研究索槽数控加工程序编制、机床加工配合、大型三维空间曲面检测等技术,对其重难点进行分析,通过采取相应的技术及工艺措施,取得了较好的效果,提高了加工质量及效率,为悬索桥索鞍加工制作提供了参考。

The cable saddle is an important stressed component of the main cable system of the suspension bridge. The cable saddle has the characteristics of complex structure, large volume and high dimensional accuracy. The cable groove of the cable saddle is a complex curved surface in three-dimensional space, and the machining accuracy level is very high. Its machining process involves NC programming, curved surface detection and other processes, taking the main cable saddle and splay saddle body of super large suspension bridge as an example. This paper studies the technologies of cable groove NC machining programming, machine tool machining cooperation and large-scale three-dimensional surface detection, analyzes its key and difficult points, and takes cor-responding technical and technological measures to achieve good results, improve the machining quality and efficiency, which provides a reference for the machining and manufacturing of suspension bridge cable saddle.