异型螺杆CAD/CAM的研究

STUDY ON CAD/CAM OF SPECIAL SCREWS

讨论了在CAD/CAM系统中几种异型螺杆造型和加工的方法.首先提出利用UG里表达式功能和包裹功能,生成变螺距的螺杆螺旋线的展开线,并用它包裹圆柱生成螺旋线的方法.然后讨论了自动生成加工程序和代码的方法.最后利用生成的加工代码在数控车床上加工出变螺距螺杆的样品.

The paper at first presents some easy methods of making the model of special screws in UG solution, in whichthe thnctions of expression and wrap/unwrap are used to change the unwrap curve of the screw into the screw curve. Thenthe methods of automatically generating the codes of NC are discussed.At last,basing the codes, sample ofvariable pitch screw is machined