高速冲床喷口压力及位置对工件出模影响分析

发布时间：2018-01-22 19:18

本文关键词： DOF 数值模拟运动分析模具设计　出处：《制造技术与机床》2017年12期 　论文类型：期刊论文

【摘要】：针对高速冲床气动脱模偶尔卡模的问题,利用数值仿真的方法,结合6自由度模型,采用局部网格重构法和弹簧拉伸法对工件运动边界的网格重新划分,基于弹性碰撞假设计算工件与模具碰撞后的运动参数,对金属工件的出模过程进行模拟,对其在模具中的运动状态及轨迹进行分析,同时通过调整喷口压力以及喷口位置,保证工件在出模过程时间最短、碰撞次数最少。仿真结果表明:喷口位置以及喷口压力均对工件出模过程产生影响,调整喷口位置和压力有助于提高工件出模可靠性,同时,对模具的外形设计提出一定修改意见。本研究有助于高速冲模气动脱模模具的设计。
[Abstract]:In order to solve the problem of the occasional clamping of pneumatic demoulding in high-speed punching machine, the method of numerical simulation is used to redivide the moving boundary of workpiece with the method of local mesh reconstruction and spring drawing, combined with the 6-DOF model. Based on the elastic impact hypothesis, the motion parameters after the impact of the workpiece and the die were calculated, and the process of the metal workpiece was simulated, and the movement state and the track of the metal workpiece in the die were analyzed. At the same time by adjusting the nozzle pressure and nozzle position to ensure that the workpiece in the process of mold exit the shortest time and the least number of collisions. The simulation results show that the nozzle position and nozzle pressure have an impact on the process of the workpiece out of the mold. Adjusting the position and pressure of the nozzle is helpful to improve the reliability of the workpiece exit die, at the same time, some modification opinions on the shape design of the die are put forward. This study is helpful to the design of the pneumatic demoulding die for the high-speed punching die.
【作者单位】：南昌航空大学;
【分类号】：TG385.1
【正文快照】： 冲压加工是一种塑性成形技术,其通过压力机加工放入模内的工件[1]。数控高速冲床是在自动冲压生产线上高效率、高精密冲压加工的自动化冲压设备[2],工业中对高速冲床的需求量也越来越大[3]。随着技术的不断进步,数控高速冲床日趋智能化和精密化,对其可靠性的要求也越来越高[4]

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