BORING TOOL AND BORING MACHINE TOOL

摘要

PROBLEM TO BE SOLVED: To provide a boring tool which ensures the supply of a cutting liquid even in large diameter boring and achieves simple device structure, and to provide a boring machine tool.SOLUTION: A boring tool 20 includes: a shank 21 connected with a spindle of a machine tool 10; an arm 22 which is supported by the shank 21 and extends in a radial direction relative to a rotation axis line A of the spindle 11; and a blade edge 23 which is supported by a tip of the arm 22 and cuts a workpiece W. The boring tool 20 includes: a tank 25 which is installed at the arm 22 and stores the cutting liquid L therein; and a pipe 26 which continues from the tank 25 to the blade edge 23.