基于LabVIEW的斜圈弹簧测试系统设计与研究

斜圈弹簧具有良好的力学性能,广泛应用于机械密封、电力连接等领域。由于其结构的特殊性,目前国内尚无高精度斜圈弹簧检测设备。在分析斜圈弹簧受力和变形特点基础上,提出了一种斜圈弹簧刚度测量原理及相关计算方法,采用模块化设计思想搭建了相应的测试装置。该装置以PCI-1220U运动控制卡和PCI-1716数据采集卡作为硬件核心,以Lab VIEW为软件开发平台,通过对系统误差的理论分析来保证测试装置的高精度,适用于不同型号和尺寸斜圈弹簧的刚度测量。通过对某典型型号斜圈弹簧测试结果与有限元仿真计算的对比分析,表明该测试装置达到了设计目的,能够满足不同型号斜圈弹簧的刚度测试要求。

Design and Research of Canted Coil Spring Test System Based on LabVIEW

The canted coil spring has good mechanical properties and is widely used in the fields of mechanical seal,electric power connection and so on.Because of its special structure,there is currently no high precision canted coil spring testing equipment at home.Based on the analysis of the force and deformation characteristics of the canted coil spring,a principle of measuring the stiffness of canted coil spring and the related calculation method were put forward,and the corresponding test device with the modularization design idea was built.The PCI-1220U motion control card and PCI-1716 data acquisition card were taken as the hardware core,and LabVIEW was used as the software development platform.The theoretical analysis of the system error ensured the high accuracy of the testing device,which was suitable for the stiffness measurement of the different type of the canted coil spring.The comparison between the experimental results and the finite element simulation results of a typical canted coil spring shows that the test device achieves the design purpose and meets the requirements of stiffness testing for different types of canted coil springs.