针对空间曲线,从空间解析几何的角度分析其构成,利用相关联的两曲面推导出空间曲线的方程表达式,在数学公式的基础上完成数控铣削宏程序的编写,通过仿真演示编程结果满足要求。通过本案例,在生产中遇到零件中的空间曲线结构,均可采用本文所述方法完成铣削宏编程编写进行加工,在生产中可广泛运用。 According to the space curve, the paper analyzes the structure from the perspective of spatial analysis geometry, derives the equation of the space curve by using the two related surfaces, compiles the macro program of NC milling on the basis of the mathematical formula, and satisfies the requirement through the simulation demonstration programming result . Through this case, in the production of parts encountered in the space curve structure, can be completed using the method described in this article to write milling macro programming for processing, can be widely used in production.