模具入口结构参数对长花键轴挤压齿向误差影响的研究

Research on Tooth Mold Inlet Configuration Errors on Parameters of Long-spline Shaft Extrusion

传动轴花键长达到130 mm,长花键轴挤压齿向误差影响装配精度,易出现批量废品。齿向超差主要受模具入口结构参数影响,研究模具入口结构参数对影响齿向精度的规律有重要的意义,可主动控制模具制造精度以达到提高齿向精度的目的。以传动轴花键挤压为例,通过模拟仿真和实际挤压实验优化研究模具入口端结构参数,找到入口端圆角大小变化和圆角不均匀程度变化对齿向精度的影响规律,为提高长花键轴挤压齿向误差控制提供了理论依据。

Automotive drive shaft spline length to reach 130 mm, long squeeze tooth spline shaft assembly precision error influence, prone to bulk waste. Tooth-tolerance to the main entrance by the structural parameters of the mold, the mold entrance study of structural parameters that affect the tooth has a very important significance to the law of accuracy, precision mold manufacturing can be active control in order to achieve the purpose of improving the accuracy of tooth. Extrusion spline shaft spline as an example, the inlet end of the mold structure parameters squeeze through simulation and real experiment optimization, find the entrance end fillet fillet size changes and changes in the degree of influence of non-uniformity of the tooth to the accuracy, in order to improve the long squeeze tooth spline shaft provides the basic theoretical basis to error control.