具有气动平衡托架的数控渐进成形机床研制

发布时间：2018-04-22 10:01

本文选题：数控渐进成形 + 气动平衡方法　；参考：《南京航空航天大学》2016年硕士论文

【摘要】：数控渐进成形技术是一种板料的数字化成形技术,具有柔性、快速、小批量成本低的特点,能够满足适应现代产品个性化定制需求。数控渐进成形装备是渐进成形工艺得以深入研究的关键支撑。本文的工作为研制了一种具有新型板料托架结构的板料数控渐进成形机床。该新托架使整个机床结构简洁紧凑,控制简便,且制造成本降低。本文首先进行了气动平衡式板料托架设计研究。分析了不同类型的板料托架的结构形式,结合本机床的尺寸结构特点,采用导向与驱动分开的结构形式。分析了板料托架在正成形中的作用,确定了设计目标为实现板料托架的跟随运动。分析了排气稳压与储气稳压的特点,比较了排气节流与进气节流的不同点,设计了独特的气路系统以实现跟随运动,即采用储气稳压的方式实现气缸的准恒力输出。其次,本文进行了数控渐进成形机床的实现研究。机床伺服进给系统的选型,相关零部件的变异设计。气动平衡托架的实现研究,包括板料托架零部件具体设计、针对不同的成形要求设计不同类型的渐进成形装置。建立了机床零部件三维模型和总装配体模型,并进行静态干涉分析、动态干涉检查、几何参数测量和质量属性分析,提高了机床设计的准确性和效率。最后讨论了机床装配方法、精度检测方法,通过合适的加工方法保证机床装配精度。进行了正成形、负成形试验。
[Abstract]:Numerical control incremental forming is a kind of digital forming technology for sheet metal, which is flexible, fast and low cost in small batches. It can meet the needs of individualized customization of modern products. NC incremental forming equipment is the key support for further study of incremental forming process. In this paper, a new type of sheet metal bracket NC progressive forming machine is developed. The new bracket makes the whole machine tool compact, easy to control and low manufacturing cost. In this paper, the design of pneumatic balanced plate bracket is studied. The structural forms of different types of sheet metal brackets are analyzed. According to the characteristics of the size structure of the machine tool, the structure form of guide and drive is adopted. The function of sheet metal bracket in normal forming is analyzed, and the design goal is to realize the following motion of sheet metal bracket. This paper analyzes the characteristics of exhaust steady pressure and gas storage steady pressure, compares the difference between exhaust throttling and intake throttling, and designs a unique gas path system to realize the following motion, that is, to realize the quasi-constant force output of the cylinder by the way of gas storage and steady pressure. Secondly, the realization of NC incremental forming machine is studied in this paper. Machine tool servo feed system selection, related parts variation design. The research on the realization of pneumatic balancing bracket includes the design of sheet metal bracket parts and the design of different types of progressive forming device for different forming requirements. The 3D model and assembly model of machine tool parts are established, and the accuracy and efficiency of machine tool design are improved by static interference analysis, dynamic interference inspection, geometric parameter measurement and quality attribute analysis. Finally, the assembly method and precision testing method of machine tool are discussed, and the assembly accuracy of machine tool is ensured by proper machining method. Positive forming and negative forming tests were carried out.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TG659

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