【摘要】 喷墨定位系统是一种以印品图像位置为基准,通过机器设备调节喷墨头组成的喷墨单元位置来提高喷墨上光和喷码等印刷设备喷墨点定位准确度的装置平台,为加强喷墨定位系统的精准度,以喷墨定位平台为研究对象,使用SolidWorks对喷码检品机的喷墨定位平台绘制三维模型,并以parasolid格式导入到ANSYS Workbench中进行有限元静力学分析,得出喷墨定位平台的最大形变量为0.082mm,远小于其要求的定位精度0.1mm,定位平台的承载和刚度也能够满足要求。再对喷墨定位平台进行模态分析和谐响应分析,通过分析得出喷墨定位平台的固有频率、振型以及振幅与频率的关系,再对比模态分析与谐响应分析的结果,发现在220.45Hz,315.4Hz,317.08Hz,518.54Hz附近,喷墨定位平台最容易出现共振现象,应尽可能避免这些频率附近的外部激励。更多还原

【Abstract】 Inkjet positioning system is a kind of device platform which takes the position of printing image as the reference and improves the positioning accuracy of inkjet points of printing equipment such as inkjet polishing and inkjet coding by adjusting the position of inkjet unit composed of inkjet head by machine and equipment.In order to strengthen the accuracy of inkjet positioning system,the inkjet positioning platform is taken as the research object.SolidWorks was used to draw a 3D model of the inkjet positioning platform of the inkjet inspection machine and imported it into ANSYS Workbench in Parasolid format for finite element static analysis.It was concluded that the maximum shape variable of the inkjet positioning platform was 0.082mm,far less than its required positioning accuracy of 0.1mm.The load bearing and stiffness of the positioning platform can also meet the requirements.Then,the ink-jet positioning platform was analyzed by modal analysis and harmonious response analysis.Through the analysis,the natural frequency,mode shape and the relationship between amplitude and frequency of the ink-jet positioning platform were obtained.Then,by comparing the results of modal analysis and harmonic response analysis,it was found that near 220.45Hz,315.4Hz,317.08Hz and 518.54Hz,Ink-jet positioning platforms are most prone to resonance,and external excitation near these frequencies should be avoided as much as possible.更多还原