PROCESSING MACHINE

PROBLEM TO BE SOLVED: To provide a processing machine that has a simple structure and that can process a female screw hole by rotating a drill and a tap at a rotational speed appropriate for each of them.SOLUTION: A processing machine 10 includes: a tap shaft 12, the tip part of which has a tap part 12a for performing cutting work for a female screw and which has a through-hole 12b formed along an axial direction in the rotation center; a drill shaft 11 which is inserted into the through-hole 12b, in which a drill blade 11a for performing cutting work for a prepared hole is provided at a tip part protruding from the tip part of the tap shaft 12, and the rotation center of which coincides with that of the tap shaft 12; and rotary drive mechanisms 13 and 14 that simultaneously rotate the tap shaft 12 and the drill shaft 11 at different rotational speeds. 【課題】簡易な構造で、ドリル及びタップをそれぞれに適した回転速度で回転させて雌ねじ穴を加工することが可能な加工機を提供する。【解決手段】加工機１０は、雌ねじを切削加工するタップ部１２ａを先端部に有し、回転中心に軸方向に沿って貫通孔１２ｂが形成されたタップ軸１２と、貫通孔１２ｂに挿通され、タップ軸１２の先端部から突出する先端部に、下穴を切削加工するドリル刃１１ａを有し、タップ軸１２と回転中心が一致するドリル軸１１と、タップ軸１２とドリル軸１１とを異なる回転速度で同時に回転させる回転駆動機構１３，１４とを備える。【選択図】図１