| 摘要 |
<p>A rotor for a rotary screw machine, in particular a male rotor, having helical lobes and intermediate grooves. The rotor has a core consisting of a shaft (1) of a first material and an intermediate layer (2) of a second material mounted on the shaft. The surface of the rotor is coated with a plastic layer. The invention also concerns a rotary screw machine provided with such a rotor. The invention further relates to a method for manufacturing the rotor, whereby a rod is extruded to a shape substantially corresponding to the shape of the rotor and then being cut up into rotor bodies. The plastic layer is injection moulded around each of said rotor bodies. After making a hole in the rotor body it is mounted on the shaft. The rotor can be manufactured without any cutting machining and meets the required demands on shape accuracy and strength.</p> |
