Research On Reliability Acceleration Test System For Industrial Robot Electrical Connector

As an important basic connecting component in signal system,electrical connector is widely used in military and civil industries,and is an important component for signal transmission and control.With the development of intelligent industrial robots,the requirements for the electrical connectors of industrial robots are higher and higher.Since the bad contact between the internal controller and the harness or the harness and harness will affect the work of the whole system.Therefore,the reliability of the electrical connector of the industrial robot directly affects the reliability of the whole signal system.At present,the research of reliability of electrical connectors for industrial robots is relatively less,which mainly focuses on the reliability of aerospace connectors,vehicle-mounted connectors and USB interfaces.In view of this,this paper takes the cylindrical six-slot connector commonly used in the electrical connector of industrial robots as the research object to carry out the following research contents:(1)The experiment system of reliability acceleration of industrial robot electrical connector is designed.According to the working principle and basic performance index of the system,the acceleration experiment system for reliability of electrical connector of industrial robot is designed,mainly including the design of mechanical part,electrical part and software part.The mechanical part mainly designs the driving mode and transmission mode,the electrical part designs the power supply system and the selection of components,and the software part mainly matches the performance parameters of the system according to the actual test conditions.(2)The plug mechanical model of electrical connector is established.The closed single reed is simplified into a cantilever beam model with one end fixed,and the relationship between plug force F and insert quantity s is obtained through force analysis,and the change trend of plug force is consistent with the experiment results.(3)Based on contact resistance the reliability acceleration experiment is studied.The reliability experiment platform is built,and according to the experiment plan the test is carried out.The contact resistance of the connector after the experiment is measured by the four-wire method of kelvin.(4)Based on plug force the reliability acceleration experiment is studied.The reliability test platform is built,according to the experiment plan the experiment is carried out,and by measuring the connector plug in the process of insertion force,it is found that with increasing number of plug,insertion force first increases then decreases,and the insertion force is generally greater than the output,pull and plug the early stage of the insertion force increases with the rise of temperature and frequency of plug,plug in the late decreases with the increase of temperature and frequency of plug.