By making good use of the QBASIC Language,for large sized tube welding,the numerical controlled program for making the perpendicular intersecting line(tri-dimensional) notch for welding is performed.

• 利用QBASIC语言,对大型管道焊接件的正交相贯线坡口(三维曲线)的加工进行数控编程,有效地提高了数控工艺员的工作效率。