Drilling and countersinking tool and drilling and countersinking auxiliary tool

Abstract

There are provided a tool and an auxiliary tool that can perform drilling and countersinking at a time to improve working efficiency while securing not only machining accuracy of the drilling but also machining accuracy of the countersinking, by using a tool including drills usable for both of the drilling and the countersinking. A tool including drills usable for drilling and countersinking, includes: a head configured to guide the drills and to hold a workpiece; a linear motion mechanism configured to relatively move the head relative to the drills with a predetermined stroke along with progress of machining by the drills; and a stopper configured to regulate displacement of the head guiding the drills in the machining by abutting on a reception portion at a terminal end of the stroke.

Dependencies are inferred from the claim text.