车轴滚压刀具的设计和滚压工艺试验分析

Design of Axle Rolling Tool and Rolling Test Analysis

动车组车轴运行时,在车轴圆角处容易产生疲劳损坏,严重时导致车轴断裂。为强化车轴表面,针对动车组EA4T车轴设计了滚珠滚压刀具,完成对滚压刀具元件的设计和选择,通过滚压试验分别得出滚压力、进给速度和车床主轴转速为参数变量时对车轴表面质量的影响规律。

When the axle of EMU is running,the axle at the corner is prone to fatigue failure,even causing the axle to break. A ball rolling tool is designed for the EA4 T axle of EMU to strengthen the axle surface,the rolling tool element is designed and selected. The influence of rolling pressure,feed speed and spindle speed on the surface quality of the axle are obtained by rolling test.