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论述了采用圆柱坐标系三轴联动微机数控火焰切割机在圆钢管上切割焊接弯头环节斜截端面曲线，及其变角度焊接坡口面的原理和方法
This paper discusses the principle and method of using the cylindrical coordinate system of triaxial linkage computerized numerical control flame cutting machine to cut the curve of the incline end face of the welded elbow in the round steel pipe and to change the angle of the welded groove face