Analysis and calculation of kinematics accuracy reliability on beating-up mechanism of high-speed rapier loom

The reliability, stability and kinematics accuracy of domestic high-speed rapier loom were urgent to be improved.Based on the kinematics accuracy models of conjugate cam in beating-up mechanism considering the three errors including dimension errors, clearances of hinged joints and cam surface wear error, the precise analytic equation for the solution of kinematics accuracy reliability of beating-up mechanism was established. And the simulation was carried out using Maple software. The influence of the major factors on kinematics accuracy reliability of highspeed conjugate cam beating-up mechanism was revealed systematically. The results show that the descending order of influence degree for the kinematics accuracy reliability of high-speed conjugate cam beating-up mechanism is cam surface wear error, dimension errors, clearances error of hinged joints. The specific measures of improving kinematics accuracy reliability of conjugate cam in beating-up mechanism are put forward.