陶粒增强砌块双轴切割机床的设计与研究

发布时间：2018-03-07 07:22

本文选题：陶粒增强砌块　切入点：双轴切割机床　出处：《浙江工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着国家基础建设的不断增加,砌块有着广阔的需求量,而陶粒增强砌块是一种现阶段较为新型的自保温材料的墙体砌块。目前,国内对于砌块生产装备提出了不同的要求,主要集中在提高生产效率和降低生产成本问题上。而在砌块生产线中,砌块的切割是重要的工艺部分,所以对于陶粒增强砌块的切割机床的设计与研究将有利于砌块生产水平的提高与国家切割机床的发展。本课题是基于陶粒增强砌块的加工生产线设计为背景,开发了陶粒增强砌块的双轴切割机床。根据企业传统切割机床存在的问题,设计出了新型的切割机床,以满足工业要求。在完成三维设计后,对锯片切割过程中的力学模型进行了分析,并通过静动态分析验证了设计的正确性,通过对立柱和锯轴的优化来求得最佳设计变量值。主要研究内容如下:(1)根据陶粒增强砌块的生产加工的特点,确定切割机床的总体功能要求,研究出机床的各功能模块之间的关系,以此设计出符合要求的机床结构方案,并完成其三维模型。(2)在研究金刚石锯片的锯切过程中,通过工件表面的变化情况来探究锯切机理,将锯切过程中的所受到的力分为切向锯切力和法向锯切力,根据力的分布特点选择锯切方式。通过对锯片的受力分析,建立了锯切弧区的数学模型,并将多个锯片所受到的锯切力进行耦合。通过对切割弧区中实际锯切弧长与弧区角的关系分析,建立锯齿与切割深度的关系式,进而对单个金刚石受力情况建立了力学模型。(3)根据锯切过程中的力学模型,分析机床中各个关键部分的载荷分布情况,并建立相应的有限元模型,对各关键部分进行静力分析。并对各自分析结果进行相应的方案改进,以提高其性能。对机床进行动态分析,研究机床的固有频率和振型,验证其工作的稳定性。(4)根据机床重要部件的分析结果,选择锯轴和立柱进行优化设计。选择适当的设计变量、约束条件和目标函数对锯轴和立柱进行最优化设计。本文通过功能要求分析设计出双轴切割机床,对重要部件进行研究与分析,并对关键部分进行了结构优化设计,为切割机床设计与优化提供了理论依据。
[Abstract]:With the increasing of national infrastructure, there is a broad demand for masonry, and ceramsite reinforced block is a relatively new type of self-insulating material wall block at this stage. At present, different requirements have been put forward for the production equipment of block in our country. The main focus is on improving production efficiency and reducing production cost. In block production line, block cutting is an important part of the process. Therefore, the design and research of cutting machine tools for ceramsite reinforced block will be beneficial to the improvement of block production level and the development of national cutting machine tools. Based on the problems of traditional cutting machine tools, a new type of cutting machine tool is designed to meet the requirements of industry. The mechanical model in the cutting process of saw blade is analyzed, and the correctness of the design is verified by static and dynamic analysis. The optimum design variable value is obtained by optimizing the column and saw shaft. The main research contents are as follows: (1) according to the characteristics of the production and processing of the ceramsite reinforced block, the overall functional requirements of the cutting machine tool are determined. The relationship between various functional modules of the machine tool is studied, and the structure scheme of the machine tool that meets the requirements is designed, and its 3D model. 2) in the process of studying the cutting process of diamond saw blade, the mechanism of sawing mechanism is probed through the change of the workpiece surface. The forces in the sawing process are divided into tangential sawing forces and normal sawing forces. According to the distribution characteristics of the forces, the sawing modes are selected. The mathematical model of the sawing arc region is established by analyzing the forces on the saw blades. Through the analysis of the relationship between the actual cutting arc length and the angle of the cutting zone, the relationship between the sawtooth and the cutting depth is established. Then the mechanical model of single diamond is established. (3) according to the mechanical model in sawing process, the load distribution of every key part of machine tool is analyzed, and the corresponding finite element model is established. In order to improve the performance of the machine tool, the dynamic analysis of the machine tool is carried out, and the natural frequency and mode of the machine tool are studied. Verify the stability of its work.) according to the analysis results of the important parts of the machine tool, select the saw shaft and column to carry on the optimization design. Select the appropriate design variable, The constraint conditions and objective functions are used to optimize the design of saw shafts and columns. In this paper, two axis cutting machine tools are designed through functional requirement analysis, and the important parts are studied and analyzed, and the key parts are optimized for structure design. It provides a theoretical basis for the design and optimization of cutting machine tools.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU522.05

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