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发明授权
CN103998707B 其上具有旋转切割结构的钻头 失效 - 权利终止

其上具有旋转切割结构的钻头
摘要：
一种钻头包括：钻头本体，其能够绕着纵向轴线旋转，且在一个端部处具有用于将所述钻头固定到钻柱的连接端部，而且在与所述连接端部相反的位置处具有一个面；以及多个切割结构，包括至少一个固定切割结构和至少一个切割本体，所述至少一个固定切割结构布置在所述钻头本体的面上，所述至少一个切割本体可旋转地附连到所述钻头本体的所述面；其中，在多个切割结构旋转到单个平面的视图中，在所述至少一个固定切割结构与所述至少一个切割本体之间基本不存在径向重叠。
摘要（英）：

A drill bit may include a bit body rotatable about a longitudinal axis and having, at one end, a connection for securing the drill bit to a drill string and having a face opposite the connection end; and a plurality of cutting structures having at least one fixed cutting structure disposed on the bit body face and at least one cutting body rotatably attached to the face of the bit body; wherein, in a rotated view of the plurality of cutting structures into a single plane, there is substantially no radial overlap between at least one fixed cutting structure and the at least one cutting body.

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