关键词: 楔横轧；一次楔成形；汽车变速箱中间轴；二次楔成形

Abstract:

In view of product quality of cross wedge rolling semifinished product of automotive power-shift box middle shaft which has heavy sectional shrinkage, numerical simulation and experimental method were adopted to analyze single wedge rolling and second wedge rolling method. It is found out that contrast second wedge rolling, single wedge rolling will not make workpiece bend easily, and after rolling the workpiece has no neck shrinkage. Single wedge rolling can also get better internal quality. The study results show that it is feasible to manufacture the product with single wedge rolling method.

Key words: cross wedge rolling, single wedge rolling, automotive power-shift box middle shaft, second wedge rolling