DRILLING TOOL

摘要

The present invention relates to a drilling tool capable of drilling an object by controlling an angle. The drilling tool comprises: a pair of fixing units fixated on both sides of a portion to be drilled of an object to be drilled; an angle control unit fixated between the fixing units, including an arc guide hole forming an arc with respect to the portion to be drilled; and a drilling unit including a fixing means being fixated to the angle control unit at equal distance from the guide hole when a drilling end is positioned on the portion to be drilled, comprising further of a preheater including an insertion hole into which the drilling unit is inserted and in contact with around the portion to be drilled of the object to be drilled.