液晶面板半成品边缘凸起检测设备关键驱动部件的分析与研究
发布时间：2019-04-04 09:53
【摘要】：对液晶面板边缘凸起检测设备的研发是为了甄选出具有较大凸起的半成品面板,完善工厂的生产工艺。现有的边缘检测设备分别利用机器视觉原理或光电传感器扫面方式来实现。本课题来源是实习基地与京东方公司合作的研发项目,设计一台利用位移传感器实现液晶面板边缘检测功能的自动化设备。该设备分为三个工位,分别是传输工位、搬运工位和检测工位。由于设备驱动机构对各工位工作的稳定性有很大的影响,于是本文主要针对三个工位中的驱动部分进行了深入分析,为实际的设计工作提供理论支撑。本文主要从以下几方面进行了分析与研究。对传输工位的扭矩传递机构,提出利用磁性齿轮代替传统机械齿轮进行扭矩传递的方案,并使用SolidWorks软件对磁齿轮组进行建模,使用Maxwell软件对磁齿轮组进行电磁学静态仿真分析。并引入正交试验的方法,设计了四因素三水平的正交试验表,得到9组仿真试验。通过仿真计算得到仿真结果。对结果进行了极差分析,验证了仿真中各因素的显著性。在得到的仿真结果中,综合考虑成本和扭矩传递需求等方面,最终确定剩磁为:1.17T,磁极数为:8个,矫顽力为:876kA/m,间距为:0.6mm的磁齿轮组为最优组合。对搬运工位的机械臂进行了有限元分析,校核在负载下的强度和变形表现。通过静力学分析得到了机械臂的最大变形位移为6.718x10-5m,最大应力为27.887MPa。最大应力小于许用应力,所以机械臂能在负载下正常工作。随后通过拓扑优化的方法得到了结构去除材料的方案,实现了减轻结构自重40%的目的。最后对优化后的结构进行模态分析,分析其稳定性。通过对比其各模态的固有频率与自激频率得出结论,在运行过程中不会于驱动源发生共振。在检测工位中对其滚珠丝杠的选型和同步带系统工作参数稳定性进行了分析计算,为设计选型提供了理论依据,保证了同步带的稳定性,避免了发生爬齿等不良现象。
[Abstract]:The research and development of the liquid crystal panel edge bulge detection equipment is to select the semi-finished panel with large bulge and perfect the production process of the factory. The existing edge detection equipment is realized by means of machine vision principle or photoelectric sensor sweep mode respectively. The source of this project is the research and development project of cooperation between the practice base and BOE Corporation to design an automatic device which uses displacement sensor to realize the function of liquid crystal panel edge detection. The equipment is divided into three stations, namely, transmission station, transport station and inspection station. Because the device driving mechanism has a great influence on the stability of each station, this paper mainly analyzes the driving part of the three stations in order to provide theoretical support for the practical design work. This article has carried on the analysis and the research mainly from the following aspects. For the torque transmission mechanism of transmission station, a method of using magnetic gear instead of traditional mechanical gear for torque transfer is put forward. The magnetic gear set is modeled by SolidWorks software, and the magnetic gear set is simulated by Maxwell software. The orthogonal test table with four factors and three levels was designed by introducing the method of orthogonal experiment, and nine groups of simulation tests were obtained. The simulation results are obtained by simulation. The results are analyzed to verify the significance of each factor in the simulation. In the simulation results, considering the cost and torque transfer requirements, the final remanence magnetic is 1.17T, the number of magnetic poles is 8, the coercive force is 876kA / m, and the magnetic gear set with 0.6mm spacing is the optimal combination. Finite element analysis is carried out to check the strength and deformation of the manipulator under load. The maximum deformation displacement of the manipulator is 6.718x10x5m and the maximum stress is 27.887MPa by statics analysis. The maximum stress is less than the allowable stress, so the manipulator can work normally under load. Then the method of topology optimization is used to get the material removal scheme of the structure, and the goal of reducing the weight of the structure by 40% is realized. Finally, the modal analysis of the optimized structure is carried out, and the stability of the optimized structure is analyzed. By comparing the natural frequencies and self-excited frequencies of each mode, it is concluded that resonance will not occur in the driving source during operation. The selection of ball screw and the stability of working parameters of synchronous belt system are analyzed and calculated in the testing station, which provides the theoretical basis for design and selection, guarantees the stability of synchronous belt, and avoids the bad phenomena such as tooth creeping and so on.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN873
本文编号：2453703
[Abstract]:The research and development of the liquid crystal panel edge bulge detection equipment is to select the semi-finished panel with large bulge and perfect the production process of the factory. The existing edge detection equipment is realized by means of machine vision principle or photoelectric sensor sweep mode respectively. The source of this project is the research and development project of cooperation between the practice base and BOE Corporation to design an automatic device which uses displacement sensor to realize the function of liquid crystal panel edge detection. The equipment is divided into three stations, namely, transmission station, transport station and inspection station. Because the device driving mechanism has a great influence on the stability of each station, this paper mainly analyzes the driving part of the three stations in order to provide theoretical support for the practical design work. This article has carried on the analysis and the research mainly from the following aspects. For the torque transmission mechanism of transmission station, a method of using magnetic gear instead of traditional mechanical gear for torque transfer is put forward. The magnetic gear set is modeled by SolidWorks software, and the magnetic gear set is simulated by Maxwell software. The orthogonal test table with four factors and three levels was designed by introducing the method of orthogonal experiment, and nine groups of simulation tests were obtained. The simulation results are obtained by simulation. The results are analyzed to verify the significance of each factor in the simulation. In the simulation results, considering the cost and torque transfer requirements, the final remanence magnetic is 1.17T, the number of magnetic poles is 8, the coercive force is 876kA / m, and the magnetic gear set with 0.6mm spacing is the optimal combination. Finite element analysis is carried out to check the strength and deformation of the manipulator under load. The maximum deformation displacement of the manipulator is 6.718x10x5m and the maximum stress is 27.887MPa by statics analysis. The maximum stress is less than the allowable stress, so the manipulator can work normally under load. Then the method of topology optimization is used to get the material removal scheme of the structure, and the goal of reducing the weight of the structure by 40% is realized. Finally, the modal analysis of the optimized structure is carried out, and the stability of the optimized structure is analyzed. By comparing the natural frequencies and self-excited frequencies of each mode, it is concluded that resonance will not occur in the driving source during operation. The selection of ball screw and the stability of working parameters of synchronous belt system are analyzed and calculated in the testing station, which provides the theoretical basis for design and selection, guarantees the stability of synchronous belt, and avoids the bad phenomena such as tooth creeping and so on.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN873
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