Abstract:At present,the assembly of bolster springs in the inspection and repair of railway freight car bogies is manual operation mode.There are problems such as high work intensity,narrow operation space,potential safety hazards and low efficiency.It is urgent for automation and intelligent assembly equipment.Based on the analysis of the assembly conditions of the bogie bolster spring,an intelligent assembly robot system was developed to replace the manual automatic assembly of the bolster spring.The robot system included five modules:a jacking device,a transfer robot,a transfer platform,an assembly robot,and a wedge support robot.The automatic assembly of the bolster springs was completed through the interaction and collaborative control of the modules.The overall scheme of the robot system and the scheme design of each module were introduced.ADAMS software was used to simulate and analyze the trajectory of the six-axis robot,and the optimal trajectory of the robot system was obtained.