Considering the problems of NC programing design and application of machining the parabolic shape parts, the Parabolic shape in different forms as well as the mathematical processing and programming is analyzed. The develop and design the numerical control program is introduced through selecting the typical processing case,compiling the processing program and simulating the processing way by emulating software until complete the actual processing in lathe. The simulation and processing experiment results show that the programing methods and thoughts is a better solution for processing the parts with parabolic profile part, through line-approaching method. In the meantime,this processing idea also has the wide application for processing the other similar parabolic profile parts.%针对抛物线轮廓零件编程设计及加工应用的问题，着重讨论了抛物线在数控车削加工中存在的不同形态以及针对这些不同情况所应采取的数学处理和编程计算，选取典型实例进行分析和讨论，通过仿真试验，结果说明应用宏程序进行程序设计，采用小段直线去逼近轮廓曲线的编程思路是可行的，以此为例可用来解决类似的抛物线轮廓零件加工问题。
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