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1问题的提出目前货车120Km／h提速改造工作正在快速进行,球形塞门安装孔的切割已成为当前改造任务中主要的关键工作,球形塞门加工难度高,数量大,人工切割形状、尺寸难以把握误差较大,切割面粗糙,影响球形塞门安装质量,且生产效率低,已经成为制约提速改造任务完成的主要因素之一,因此,必须研制开发一种新型球形塞门安装孔自动切割装置。
1 PROBLEM PROBLEM At present, the speeding up of 120Km / h freight cars is being carried out rapidly. The cutting of the spherical plug mounting holes has become the key work in the current transformation tasks. The spherical plugging door is difficult to process with a large number of artificial cutting shapes and sizes It has become one of the main factors that restrict the completion of speed-up and transformation tasks. Therefore, it is necessary to research and develop a new type of automatic cutting device for ball-screw mounting holes .