Abstract：According to the requirement of NC lathe turning automatic programming system,in order to solve how to
express and put in parts information effectively, realizing NC programming automation, it has set up the data structures of
parts of revolution solid (including geometric information and processing information).Through the method of intersection
algorithm, it can put the pixel feature extraction information as well as its processing information in when clients pick up
the pixel needed, realizing dealing with its data processing and storing its data structure with the dynamic link library technology.
As it goes, different graphic pixel generates different types of lists and it can make the graphic input and reappear
on the screen by different ways of opening database, realizing output of data structure required by the system.The efficiency
of graphic input is improved, with technology support for visualization of virtual machining of the NC lathe turning offered.
2017, 
