【作者】 程志勇；

【导师】 徐知行；

【作者基本信息】 吉林大学 ， 机械工程， 2011， 硕士

【摘要】 炮塔总装实验台为两自由度实验装置,主要用于被试系统的装配、调试、检测及质量、质心的测试,具有自动调平功能、手动调节功能、质量质心测量功能以及状态信息显示功能。试验台主体结构主要由主体框架、称重系统、调平驱动系统和倾角驱动系统等组成。在主体框架上层设置了一个称重系统,称重系统由4个称重传感器、变送器及控制器组成。主体框架由两层结构组成,称重传感器以上为上基板,传感器安装在上基板的四个支撑上,中间支撑安装在调平支撑板上。本文主要对试验台的精度保证进行研究。首先,通过对试验台称重系统和质心测量系统原理进行分析和研究,采用可倾斜平台测量法测量质心位置。然后对试验台称重系统和质心测量系统进行受力分析,对其测得的质量和质心位置精度进行计算,来确保两个系统满足设计所要求的精度。接着,着重针对试验台基板的结构进行设计。通过对基板受力的分析和精度要求,初步确定基板的结构,并用WORKBENCH画出基板的三维模型,然后导入ANSYS对其进行有限元分析,计算出试验台基板在工作状态下的总形变图,得出最大形变量,并与设计要求的精度值进行对比,确保满足设计要求。最后,进行试验台基板的优化工作。通过不断地建模和有限元分析,对试验台基板的结构和尺寸进行了优化,采取双支撑框和加板筋等措施,大大减少了基板的厚度,最终使得基板的最大形变量刚好接近设计的精度要求。这样既保证了试验台基板的精度又节省了基板的材料,基本达到了本论文研究的目的。更多还原

【Abstract】 Turret assembly debugging platform is an experimental device with two degrees of freedom .It is mainly used to test the system by the assembly, commissioning, testing and quality testing center of mass. It has an automatic leveling function, manual adjustment function, quality of mass measurements, and status information display.Test bed of the main structure is dominated by the main frame, weighing system, leveling system and the angle drive system drive and other components. The upper set in the main frame of a weighing system. Weighing system consists of four load cells, deformation device and controller. Framework consists of two main structures. The top substrate is above the load cell. Sensors are installed in the middle supporting plate. Intermediate support plate mounted on the leveling support board.In this paper, the research is mainly on ensuring the accuracy of the test platform. Firstly, through researching and analyzing the weighing system of test platform and the centroid measurement system of test platform, we can find that it will be reliable to measure the centroid position with a tilt platform. Then, test-bed weighing system and measurement system for stress analysis centroid of its measured centroid position of the quality and accuracy of the calculation to ensure that the design of the two systems meet the required accuracy.Then, focus on test-bed for the design of the structure of the substrate. Through the force of the substrate and accuracy requirements, initially identified the structure of the substrate and the substrate with WORKBENCH draw three-dimensional model, and then import them ANSYS finite element analysis to calculate the test-bed substrates in the working state of the total deformation map, Reached the maximum deformation and the value of the required accuracy and design compared to ensure that meet the design requirements.Finally, I will take measures to optimize the design of the test-bed. Through continuous modeling and finite element analysis, test-bed structure and size of the substrate were optimized to double support frame and processing Ligament and other measures to significantly reduce the thickness of the substrate, and ultimately makes the substrate deformation is just close to the maximum design Accuracy. This will ensure the accuracy of the test-bed substrates and save the substrate material, basic to the purpose of this thesis.更多还原