| Original document(5 pages) 中文版 |
The present invention discloses one kind of oilstone spike for grinding the nozzle needle of the water turbine. The oilstone spike includes a spike seat, a spike fixed to the spike seat and a outer jacket around the spike with oil returning gap in between. The spike has a conic angle of 60 deg in the top. The present invention can grind central holes of nozzle needle with high roundness, high surface roughness and high concentricity, and is favorable to raising the machining precision of the nozzle needle. |
Application Number
申请号 |
200610021689 |
Application Date
申请日 |
2006.08.29 |
| Title 名称 |
Oilstone centre used for hydraulic turbine needle abrasive machining |
Publication Number
公开号 |
1911597 |
Publication Date
公开日 |
2007.02.14 |
| Approval Pub. Date |
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Granted Pub. Date |
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| International Classification 分类号 |
B24B5/48;B24B19/16 |
Applicant(s) Name
申请人 |
Sichuan Dongteng Electrical Machinery Plant Co., Ltd. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Luo Yaoming |
| Attorney & Agent 代理人 |
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| More information 更 多 信 息 |
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