DRILLING MACHINE

PROBLEM TO BE SOLVED: To provide a drilling machine structured to be capable of applying correct eccentric motion to a drill without varying a diameter of the eccentric motion of the drill even if rotary motion is applied to the drill by a driving motor. SOLUTION: The drilling machine includes at least a rotating support 24 for rotatably supporting a main shaft 23 while axial relative movement is limited for the main shaft 23, a base 20 capable of moving to a working position for machining a material to be machined, and a spindle 25 rotatably provided on the base 20 for supporting the rotating support 24. The spindle 25 relatively moves axially with respect to the rotating support 24, whereby a clearance between a shaft center of the rotating support 24 and a shaft center of the spindle 25 can be varied. COPYRIGHT: (C)2011,JPO&INPIT