The flow function method was applied to the process of screw rollingballs in the paper.
采用了三维流函数法凸凹形辊棒材轧制过程的解析，得到了与平辊轧制时相同的效果。
2
It is fit for enveloping cutting method of numerically controlled cutting of groove of the roller for rollingballs.
这种方法适用于数控切削斜轧球轧辊孔型的包络切削方式。
3
The flow function method was applied to the process of screw rollingballs in the paper. The computing formulas of rolling power and force were given. Finally the computing example was presented.