Deep hole machining tool

The utility model discloses a deep hole machining tool which is used for solving the technical problems existing in a deep hole drill in the prior art. According to the technical scheme, the drill bitcomprises a drill handle, a drill rod, a lengthened drill rod, a connecting assembly and a centralizer, a connecting part used for being coaxially installed with the drill rod is formed at one end ofthe drill handle, and the lengthened drill rod is detachably connected between the drill handle and the drill rod through the connecting assembly. A mounting part used for mounting a tool is formed at the end, away from the connecting part, of the drill handle, and a centralizer is mounted on the outer side of the lengthened drill rod and used for centralizing the lengthened drill rod during deephole machining. 本实用新型公开了一种深孔加工刀具，以用于解决现有技术中深孔钻存在的上述技术问题。本实用新型采取的技术方案为：包括钻柄、钻杆、加长钻杆、连接组件和扶正器，所述钻柄的一端形成有用于与所述钻杆同轴安装的连接部，所述加长钻杆通过所述连接组件可拆卸的连接于所述钻柄和所述钻杆之间，所述钻柄远离所述连接部的一端形成有用于安装刀具的安装部，所述加长钻杆的外侧安装有一扶正器，用于在深孔加工时扶正所述加长钻杆。