Abstract: With the development of robotics in China,home-made and foreign robots appearone after another.Robot application engineering becomes,therefore,more and moreimportation.Spray painting robot TR-4000 SMK2 introduced from Norway in 1985 isthe best one of the series,which adopted many advanced technology and TRALLFApatents such as split piston,flexiarm etc.This robot can satisfy almost all demandsof painting tasks.Much has been made to adapt the robot to the production line ofthe chassis factory of Changchun No 1 automobile works.This article gives a shortdescription of how the robot was used and of the automatic workpiece identification,workpiece pose identification,synchronization system,economic and social efficiencyanalysis,etc.