To realize provision of stable absorptivity and a duct collection force, in a machine tool with a dust collecting function to perform machining as machining chips of a work generated by machining are collected by a dust collector.

This substrate boring machine 1 is formed such that grinding chips generated during formation of a through-hole in a printed substrate 72 are collected by a dust collector 84 through a cup 78 and a dust collection pipe 82. Meanwhile, suction of the printed substrate 72 is carried out by applying a negative pressure, generated by a blower 25, on a through-hole 37 through a suction route consisting of a plate 35, a groove 31, and a suction hole 23. Since, as noted above, in a substrate boring machine 1, pressure sources are independent of one another such that a pressure source for a dust collection system is used in the dust collector and a pressure source for a suction system is used in a blower, a force to suck the printed substrate 72 is not influenced by the degree of progress of machining and a dust collecting force is also stable.