结晶器板坯平面抛磨专用设备的研发

发布时间：2019-01-04 18:13

【摘要】：多年来我国钢铁工业持续发展,生产技术水平也不断提高,许多企业的钢材质量已经处于世界先进水平,而连铸作为钢铁工业主要的生产方式,在我国钢铁工业已经有超过90%占有量。结晶器是连铸机的核心结构,结晶器的表面质量直接影响着铸件的成型质量。本文以结晶器板坯为研究对象,通过结合结晶器板坯的表面加工要求,设计出一台适用于大型结晶器板坯加工的专用机床,从而降低工人劳动强度,改善工人工作环境,提高工厂大尺寸结晶器板坯的表面加工效率。本文主要内容有:首先,根据结晶器板坯的工艺要求对其进行了工艺性分析,拟定出砂带抛磨和抛光轮抛磨两套工艺方案,通过比较选择抛光轮抛磨作为结晶器板坯表面加工方案。但是由于抛光轮抛磨一般作为抛光加工的粗抛工序,其实际生产的可行性有待验证,所以通过工艺实验对抛光轮抛磨方案进行了可行性验证,并通过分析实验结果得出现有工艺的不足,从而提出相应的改进性建议,为下一步的机床设计提供参考;然后,结合结晶器板坯的工艺要求确定机床总体方案。先是利用结晶器板坯的工艺性分析结果对机床的总体布局和机床的主传动部分、进给传动部分进行了确定,然后结合机床的传动系统对机床的运动参数、动力参数和尺寸参数进行了确定,并利用实验结果对结晶器板坯的生产率进行了估算;最后,对机床的主要结构进行了设计。机床的核心部件磨头的设计主要是对传统的抛光轮进行了改进,增强了抛光轮对抛光膏的保持性,并结合生产需要设计了抛光轮快换机构,而且对清洗管和供给管进行了布置,设计了适用于抛光轮反复清洗的升降和压紧机构;机床的进给机构主要用于实现磨头在结晶器板坯表面的S形加工路线和反复抛磨,所以设计了相应回程机构;传动机构的设计主要完成了传动系统中同步带传动、齿轮传动和蜗杆传动的设计;机床床身的设计主要是先利用SolidWorks建模,然后通过WORKBENCH进行模态分析和静力学分析进行结构优化的方式,旨在增强龙门架和底座结构的抗振性和刚性。
[Abstract]:Over the years, China's iron and steel industry has continued to develop, and the level of production technology has been continuously improved. The steel quality of many enterprises is already at the advanced level in the world, and continuous casting is the main mode of production in the iron and steel industry. In our country iron and steel industry already has more than 90% possessive amount. The mold is the core structure of the continuous casting machine. The surface quality of the mold has a direct impact on the casting quality. Taking the mould slab as the research object, a special machine tool suitable for large mould slab processing is designed by combining the surface processing requirements of the mould slab, thus reducing the labor intensity of the workers and improving the working environment of the workers. Improve the surface processing efficiency of large size mould slab in factory. The main contents of this paper are as follows: firstly, according to the technological requirements of mould slab, two sets of process schemes are worked out, namely, belt polishing and polishing wheel polishing. The polishing wheel polishing is chosen as the mold surface processing scheme by comparison. But because polishing wheel grinding is generally used as the rough polishing process, the feasibility of its actual production needs to be verified, so the feasibility of polishing wheel grinding scheme is verified by the process experiment. Through the analysis of the experimental results, the shortcomings of the existing technology are obtained, and the corresponding suggestions for improvement are put forward, which provide a reference for the next step of machine design. Then, combined with the mold slab process requirements to determine the overall scheme of machine tools. First, the overall layout of the machine tool and the main drive part and the feed drive part of the machine tool are determined by using the results of the process analysis of the mould slab, and then the kinematic parameters of the machine tool are combined with the transmission system of the machine tool. The dynamic and dimension parameters are determined and the productivity of the mould slab is estimated by the experimental results. Finally, the main structure of the machine tool is designed. The design of the grinding head, the core part of the machine tool, is mainly to improve the traditional polishing wheel, to enhance the retention of the polishing paste by the polishing wheel, to design the quick change mechanism of the polishing wheel combined with the production needs, and to arrange the cleaning pipe and the supply pipe. The lifting and pressing mechanism suitable for repeated cleaning of polishing wheel is designed. The feed mechanism of the machine tool is mainly used to realize the S-shape machining route of the grinding head on the surface of the mould slab and the repeated polishing, so the corresponding backhaul mechanism is designed. The design of transmission mechanism mainly completes the design of synchronous belt transmission, gear transmission and worm drive in transmission system. The design of machine bed is mainly based on SolidWorks modeling and then structural optimization through WORKBENCH modal analysis and statics analysis in order to enhance the vibration resistance and rigidity of gantry frame and base structure.
【学位授予单位】：沈阳大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TF341.6;TG580

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