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发明公开
CN106368613A 一种空心圆柱岩石试样制备钻头及钻机 无效 - 驳回

一种空心圆柱岩石试样制备钻头及钻机
摘要：
本发明属于岩石工程设备技术领域，公开了一种空心圆柱岩石试样制备钻头，包括：钻头基座以及桶状的大径钻头和小径钻头；所述小径钻头位于所述大径钻头内，且两者轴心重合；所述大径钻头和所述小径钻头固定在所述钻头基座上。本发明提供了一种精度高，操作高效的空心岩样制备钻头。
摘要（英）：

The invention belongs to the technical field of rock engineering equipment and discloses a drill bit for preparing a hollow cylindrical rock specimen. The drill bit comprises a drill bit base, a bucket-shaped large-diameter drill bit body and a bucket-shaped small-diameter drill bit body. The small-diameter drill bit body is located in the large-diameter drill bit body, and the axis of the large-diameter drill bit body and the axis of the small-diameter drill bit body coincide with each other. The large-diameter drill bit body and the small-diameter drill bit body are fixed to the drill bit base. The drill bit for preparing the hollow cylindrical rock specimen is high in precision and efficient in operation.

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