| 摘要 |
The present invention relates to a drill tool capable of coupling a fiber-reinforced-plastic (FRP) structure to a submarine which includes an axial member formed in a round bar shape and having a flat portion to be interlocked with a chuck of a processing machine formed at an outer circumference; a tap processing member extending from the axial member, and having a diameter greater than that of the axial member and a first screw thread formed at an outer circumference to form a tap on an object; and a perforating member extended from the tap processing member, and having a blade portion capable of perforating a hole formed at an outer circumference to perforate a hole on the object, wherein an end of the axial member is protruding from the center of the perforating member, and a second screw thread is formed at an outer circumference of an end of the axial member. A work conventionally performed with two or more drill tools can be performed with one drill tool, thereby facilitating the work, maximizing the working efficiency, and easily storing and manufacturing the tool. |
