Asymmetric space 5-degree of freedom series-parallel robot

The invention discloses a nonsymmetrical 5-freedom combined robot, including fixing frame, three length regulators, moving platform and positioning head; the top of the first length regulator is set on the fixing frame through the hinge composed of two homocentric rings from inner to outer and the end of the first length regulator is rigidly linked with the moving platform; the tops of the second and third ones are set on two sides of one end surface of the fixing frame, symmetrically, through the hinges composed of two fork structures, respectively, and their ends are hinged with the moving platform; the positioning head is linked with the bottom of the moving platform. Its advantages: module design to realize plug and play (PnP); few moving components to reduce the possibility of interference between components during moving; the end executive component can realize 5-freedom motion, having performances of high speed, precision and rigidity and characters of large working space.