Abstract: As the core component of the screw compressor， driven rotor which has obvious advantages of big pitch， high tooth depth and large helical angle is manufactured by machining. A fixed cross rolling process aimed at the near-netshape forming of driven rotor with asymmetric spiral teeth at higher productivity is presented. By means of the finite element simulation and rolling experiment， the forming process of driven rotor by fixed cross rolling was carried out. That the formed asymmetric spiral teeth had a satisfied shape and uniform graduation， and elementally met the design requirements. It verifies the feasibility of the fixed cross rolling driven rotor and its application value for engineering.

Key words: asymmetric spiral teeth, fixed cross rolling, driven rotor, net-shape forming, finite element analysis