发明名称 |
MANUFACTURING METHODS FOR HIGH SHEAR ROLLER CONE BITS |
摘要 |
A method of manufacturing a roller cone drill bit may include forming a body of a single piece having an upper end and a lower end; machining at the lower end of the body at least two journals extending downward and radially outward from a central axis of the body; machining at least one of a ball passage, a hydraulic fluid passageway, a grease reservoir, and a lubricant passageway; and mounting roller cones on the at least two journals.
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申请公布号 |
US2011023663(A1) |
申请公布日期 |
2011.02.03 |
申请号 |
US20100844589 |
申请日期 |
2010.07.27 |
申请人 |
SMITH INTERNATIONAL, INC. |
发明人 |
BIJAI RAHUL;ZHANG ZHEHUA;BHADBHADE VIKRANT;CENTALA PRABHAKARAN K. |
分类号 |
B21K5/04 |
主分类号 |
B21K5/04 |
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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