The manipulator is a part of the movement that imitates the human hand, and according to a given procedure, trajectory, and requirements, an auto matic mechanical device that automatically grassps, carries, or operates. The use of robots in production can increase the level of production automation and labor productivity, reduce labor intensity, ensure product queality, and achiebe safe production; especially in high temperature, high pressure, low temperature, low pressure, dust, explosive, toxic gases and radioactive and other harsh. The environment can replace people for normal work. The robot is used in production to clamp and unclamp the workpiece. It is similar to human fingers and can perform similar actions of human hands.