| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a screw rotor and a method for manufacturing the screw rotor allowing easy formation of a tapered tooth shape part and reducing manufacturing equipment cost. Ž<P>SOLUTION: In the method for manufacturing the screw rotor comprising a rotor tooth shape member 20 and a rotor shaft member 21 passing through the rotor tooth shape member 20 and joining the same, the joining part 21 with the rotor tooth shape member 20 of the rotor shaft member 21 is formed in a tapered shape of which outer diameter dimension gradually gets smaller toward an axial direction delivery side from an axial direction suction side, and the rotor tooth member 20 is elastically deformed and formed in a tapered shape by press-fitting the joining part 20 of the rotor shaft member 21 into the rotor tooth member 20. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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