发明名称 |
Method of processing screw rotor |
摘要 |
A cast screw rotor has an opened lightening or reduced weight hole formed inside each thread portion. The opened hole is formed along torsion of the thread portion, and a shaft is inserted into an axial hole. The screw rotor is manufactured by a method in which each of the thread portions and the axial hole are formed on the basis of the reduced weight hole.
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申请公布号 |
US5806182(A) |
申请公布日期 |
1998.09.15 |
申请号 |
US19960726523 |
申请日期 |
1996.10.07 |
申请人 |
TOCHIGI FUJI SANGYO KABUSHIKI KAISHA |
发明人 |
TATENO, MASAO;TOMITA, KOJI |
分类号 |
F01C1/16;B23P13/00;F01C1/08;F01C21/00;F04C18/16;(IPC1-7):B23P15/00 |
主分类号 |
F01C1/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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