航空叶片模具设计参数对模具磨损影响分析

为解决航空叶片精锻模具磨损严重,设计参数确定困难等问题,本文在分析模具设计过程和锻造工艺的基础上,基于Archard摩擦理论,借助有限元分析软件对不同设计参数的叶片模具的精锻成形过程进行了模拟仿真,运用正交试验设计方法分析了模具成形角度、桥部厚度、桥部宽度对叶片成形力和模具磨损的影响,得出了有益于叶片成形和减小模具磨损的最优化组合设计参数,并对该参数的计算方法进行了改进,简化了计算过程且参数计算更加精确;最后,通过工程实例对上述过程进行了验证,其实验结果与仿真结果的一致性较好,减小了模具磨损,提高了叶片模具设计效率.

The analysis of influence of design parameters of air blades on die wear

To solve the problem of serious wear of air blade precision forging die and the difficulty in determining design parameters, the precision forming process of blade die with different design parameters were simulated by the finite element analysis software on the basis of the analysis of die design process, forging process, and the Archard friction theory. The influence of die forming angle, bridge thickness, and bridge width on blade forming force and die wear was analyzed by orthogonal test design method. The optimal combination design parameters which benefited the blade forming and reduced the die wear were obtained and the calculation method of the parameters was improved, which made the calculation process more simple and the parameter calculation more accurate. Finally, the above process was verified by engineering examples. The experimental results were in good agreement with the simulation results, which reduced the die wear and improved the efficiency of the blade die design.