Abstract: A coil component includes: a base having a pair of side wall portions separated from and facing each other and a connecting wall portion interconnecting the pair of side wall portions; and an air core coil formed by winding a wire, in which the air core coil is disposed in a groove portion formed by the pair of side wall portions and the connecting wall portion.

Abstract: In order to improve ease of assembly and machining accuracy of a wire electric discharge machine, the present invention constructs a column and a lower support assembly to be separated, and configures the lower support assembly to have a structure integrally composed of a proximal portion having the same sectional shape as a sectional shape of the column, and a central projecting portion that projects from a center of a bottom surface of the proximal portion to support a lower arm. Furthermore, the lower arm is attached to the central projecting portion of the lower support assembly, while a Y-axis guide guided by a Y-axis guide rail of a Y-axis guiding mechanism, for example, is attached to the bottom surface of the proximal portion of the lower support assembly. Then the proximal portion and a bottom surface of the column are connected by bolts.