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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。
Transmission shaft spline length up to 130 mm, long spline shaft extrusion error affects the assembly accuracy, prone to mass scrap. Too large toothing is mainly affected by the structural parameters of the die entrance. It is of great significance to study the structural parameters of the die entrance on the law that affects the tooth orientation accuracy. The purpose of the die accuracy is to actively control the manufacturing precision of the die. Taking spline extrusion of transmission shaft as an example, the structural parameters at the entrance of the die are optimized by simulation and actual extrusion experiments to find out the influence of the variation of the fillet size on the entry side and the unevenness of the fillet on the accuracy of the tooth orientation, in order to improve Long spline shaft toothed error control provides a theoretical basis.