同心连接器的力学性能测试技术和系统研究

为了能快速测量同心连接器插拔过程中的力学性能和准确评价机械寿命,研制了一种同心连接器的力学性能测试系统。该系统主要由运动模拟的机械装置和传感测量与电机控制的测控子系统组成,具有四路同步自动测试能力;根据连接器测试标准分析系统的性能指标,提出一种直线运动与旋转运动相结合的测试方法,使测试条件更加符合连接器真实使用情况;同时设计出具有自适应能力的柔性夹具,减少安装误差对测试结果的影响;对运动模拟机构进行建模分析研究,在极限速度条件下确定插拔循环周期内直线与旋转运动配合时序。对连接器样品进行单次和多次插拔测试,分析数据得到了连接器的力学性能并对机械寿命评估验证,实验结果表明该系统满足测试要求且能得到预期效果。

Research on testing technology and system of mechanical properties for a concentric connector

In order to accurately measure the mechanical properties and rapidly evaluate of the mechanical life of the concentric connector during the inserting and unplugging, a concentric connector testing system of mechanical properties is developed. The system is mainly composed of the motion simulating mechanical device, the sensor measurement and the motor control subsystem, which has four channel test capabilities. According to the connector test standard, the system performance index is analyzed, and a testing method combining linear motion and rotary motion is proposed to make the test conditions better fit the actual use of the connector. At the same time, an adaptive flexible fixture is designed to reduce the installation error. The kinematic model is established and analyzed with which the time sequence of the linear and rotational motion is determined under ultimate speed. Multiple connector samples are tested, and the mechanical properties and the service life of the connectors are evaluated. The experimental results show that the system can meet the testing requirements and achieve the desired performance.