大型模锻装备锻造过程建模与运行分析

发布时间：2019-08-16 16:04

【摘要】：大型模锻装备极低速稳定运行是制造高性能复杂整体锻件的一大关键。但复杂的非线性摩擦力、液压力与锻件变形力致使大型模锻装备在极低速运行时极易出现速度振荡甚至爬行,难以实现模锻压机极低速稳定运行控制。针对该问题,建立复杂锻造过程的非线性模型,提出基于非线性振动分析理论的模锻压机速度求解方法,实现了模锻压机速度的近似求解。在此基础上,推导大型模锻装备极低速运行规律,揭示极低速稳定运行、振荡与爬行条件。通过对模锻压机复杂锻造过程进行仿真与试验,结果表明了速度模型与运行条件的正确性与精确性,为大型模锻压机极低速稳定运行控制提供了理论基础。
[Abstract]:The very low speed and stable operation of large die forging equipment is a key to the manufacture of high performance complex integral forgings. However, the complex nonlinear friction, hydraulic pressure and deformation force of forgings make the large die forging equipment easy to oscillate or even crawl at very low speed, so it is difficult to realize the very low speed stable operation control of die forging press. In order to solve this problem, the nonlinear model of complex forging process is established, and the speed solution method of die forging press based on nonlinear vibration analysis theory is put forward, and the approximate solution of die forging press speed is realized. On this basis, the very low speed operation law of large die forging equipment is deduced, and the conditions of very low speed stable operation, oscillation and crawling are revealed. Through the simulation and test of the complex forging process of the die forging press, the results show the correctness and accuracy of the speed model and the operating conditions, which provides a theoretical basis for the very low speed and stable operation control of the large die forging press.
【作者单位】：中南大学高性能复杂制造国家重点实验室;
【基金】：国家重点基础研究发展计划(973计划,2011CB706802) 国家自然科学基金(51205420) 新世纪人才计划基金(NCET-13-0593) 湖南省自然科学基金(14JJ3011) 中南大学中央高校基本科研业务费专项资金资助项目
【分类号】：TG316

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