玻璃切割机的结构改进及生产工艺研究
发布时间：2018-10-19 15:05
【摘要】：精密玻璃切割机是当代液晶显示制造行业不可或缺的生产设备之一，它的切割精度直接影响着产品的最终质量。本论文以某型玻璃切割机为研究对象，对其部分机械结构及其切割工艺进行了研究。 基于有限元分析技术和实际生产工艺分析相结合的方法，，通过大量试验实现了机械结构与切割工艺参数之间的合理匹配，并对切割机在大批量生产过程中如何提高产品合格率和切割机的稳定性方面进行了一些有益的研究和尝试。 基于实际需求对所设计的切割机主要传动机构的运动机理进行了分析，确定了滚珠丝杠的传动形式，并对滚珠丝杠副进行了刚度计算与选型，分析了大型滚珠丝杠在选型过程中需要重点考虑的影响因素。 建立了工作台结构模型，对工作台支撑杆数量及支撑位置进行了优化设计，通过有限元优化计算的方法将工作台支撑杆从48根减少到36根，通过对改进结构的试验调试、测量检验，证明了方案的可行性。 利用装配完成的设备构建实验平台，从切割参数到切割工艺流程进行改进设计，对特定玻璃型号所需要的切割参数进行了验证，获得了合理有效的切割参数选用方法。针对切割玻璃流程，提出了对角抓取的改进方法，实验证明了改进方案的可靠性与稳定性，提高了切割效率与生产的良品率。
[Abstract]:The precision glass cutting machine is one of the indispensable production equipments in the liquid crystal display manufacturing industry. Its cutting precision directly affects the final quality of the product. In this paper, some mechanical structure and cutting technology of a glass cutting machine are studied. Based on the combination of finite element analysis technology and practical production process analysis, the reasonable matching between mechanical structure and cutting process parameters is realized through a large number of experiments. Some beneficial researches and attempts are made on how to improve the qualified rate of products and the stability of cutting machines in mass production. Based on the actual demand, the motion mechanism of the main transmission mechanism of the cutting machine is analyzed, the transmission form of the ball screw is determined, and the stiffness of the ball screw pair is calculated and selected. The factors that need to be considered in the selection of large ball screw are analyzed. The structure model of the worktable is established, and the number and position of the supporting rod of the worktable are optimized. By the method of finite element optimization calculation, the support rod of the worktable is reduced from 48 to 36, and the improved structure is tested and debugged. The feasibility of the scheme is proved by measuring and checking. The experimental platform was constructed by using the equipment completed by assembly, and the cutting parameters were improved and designed from cutting parameters to cutting process. The cutting parameters needed for specific glass models were verified, and a reasonable and effective method for selecting cutting parameters was obtained. In view of the glass cutting process, an improved method of diagonal grabbing is put forward. The reliability and stability of the improved scheme are proved by experiments, and the cutting efficiency and the yield of good products are improved.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ171.683
本文编号：2281498
[Abstract]:The precision glass cutting machine is one of the indispensable production equipments in the liquid crystal display manufacturing industry. Its cutting precision directly affects the final quality of the product. In this paper, some mechanical structure and cutting technology of a glass cutting machine are studied. Based on the combination of finite element analysis technology and practical production process analysis, the reasonable matching between mechanical structure and cutting process parameters is realized through a large number of experiments. Some beneficial researches and attempts are made on how to improve the qualified rate of products and the stability of cutting machines in mass production. Based on the actual demand, the motion mechanism of the main transmission mechanism of the cutting machine is analyzed, the transmission form of the ball screw is determined, and the stiffness of the ball screw pair is calculated and selected. The factors that need to be considered in the selection of large ball screw are analyzed. The structure model of the worktable is established, and the number and position of the supporting rod of the worktable are optimized. By the method of finite element optimization calculation, the support rod of the worktable is reduced from 48 to 36, and the improved structure is tested and debugged. The feasibility of the scheme is proved by measuring and checking. The experimental platform was constructed by using the equipment completed by assembly, and the cutting parameters were improved and designed from cutting parameters to cutting process. The cutting parameters needed for specific glass models were verified, and a reasonable and effective method for selecting cutting parameters was obtained. In view of the glass cutting process, an improved method of diagonal grabbing is put forward. The reliability and stability of the improved scheme are proved by experiments, and the cutting efficiency and the yield of good products are improved.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ171.683
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