Research on geometry models of NC machining of hyperbolic revolving surfaces;

Study of truncated intersector curve of single leaf and double leaf bilateral curved rotation surface;

Moreover,the application of two-plane rotation and FPGA\'s DSP units farther improves the hardware\'s performance,and avoids revising the result by scale factor.

The property of the uniparted hyperboloid of the section line was proved for the graphical method;