Drilling apparatus and drilling method

摘要

There is provided a drilling apparatus. A drilling apparatus 1 includes a drill 12 rotatable about a center axis Ax and capable of advancing and retracting along the center axis Ax, and a pressing member 13 for pressing a work W in a drill advancing direction Z+. The drilling apparatus 1 advances the drill 12 while rotating the drill 12 about the center axis Ax to form a hole in the work W, in a state in which the work W is pressed by the pressing member 13. A pressing force applied on the work W by the pressing member 13 is set to a predetermined pressing force P on the basis of machining reaction applied to the drill from the work during drilling and the pressing force causing deformation of the work in the advancing direction of the drill, the machining reaction and the pressing force being calculated in a drilling test performed in advance. The predetermined pressing force P is capable of suppressing deformation of the work W and displacement of the drill 12 due to the machining reaction.