The manipulator is an automatic operation device capable of mimicking certain movements of the human hand and arm, for grasping,handling, or operating the tool in a fixed procedure, The
characteristic is that can be finished all kinds for expected homework by program, The structure and performance have the advantages of both human and robot.Manipulator is the earliest industrial
robot, also is the earliest emergence of modern robots, it can be instead of heavy labor of human to realize the mechanization and automation of production and protect personal safety in harmful
environment , so it is widely used in machinery manufacturing, metallurgy, electronics, light industry and atomic energy and other departments.