| 摘要 |
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. |
