论文部分内容阅读
曲轴NTR(新TR)弯曲镦锻工艺具有水平镦锻与垂直弯曲成形速度灵活匹配的特点。本文研究了模具运行速度对全纤维曲轴成形塌角缺陷的影响。建立了塌角量的几何模型,通过建立弯曲镦锻速度模型分析了影响模具运行速度的主要因素。基于6G32曲轴实例进行了不同模具运行速度下曲轴成形过程数值模拟,研究模具速度对曲轴塌角量的影响规律。在物理模拟系统进行了6G32小比例铅曲轴坯的系列NTR镦锻弯曲试验,数值模拟结果得到了验证。
Crankshaft NTR (new TR) bending upsetting process with horizontal upsetting and vertical bending forming speed and flexible matching characteristics. In this paper, the effect of mold running speed on the failure of full-fiber crankshafts was studied. The geometrical model of the amount of collapsing is established. The main factors influencing the running speed of the mold are analyzed by setting up the upsetting speed model. Based on the example of 6G32 crankshaft, the numerical simulation of crankshaft forming process under different mold operating speeds was carried out to study the influence of mold speed on the amount of crankshaft collapse. In the physical simulation system, a series of NTR upset forging tests of 6G32 lead crankshaft billet were carried out. The numerical simulation results were verified.