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对圆锥面上的两种相贯线进行了分析，获得了数控切割加工的理论模型，并介绍了为解决这类空间曲线切割加工而研制的数控切割设备，以及该设备在宝山钢铁公司３号高炉制造中的成功使用
The two intersecting lines on the conical surface are analyzed and the theoretical model of NC cutting is obtained. The numerical control cutting equipment developed to solve this kind of spatial curve cutting is introduced. The successful use of blast furnace manufacturing