BORING METHOD AND BORING DEVICE

摘要

Boring precision is enhanced by eliminating an moving error occurring when a drill is moved. A jig board has two imaging holes and a jig hole. Relative arrangement relation between them is equal to the relation between two predetermined marks on a substrate of boring object and a predetermined boring position. Positioning of the drill is performed according to the following steps; (1) the centers of two imaging holes in the jig board are aligned, respectively, with the imaging centers of two imaging means, (2) a substrate for correction mounted on the jig board is bored by means of a drill passed through the jig hole, (3) the center of the bored hole is moved to the imaging center and error of the center of boring position with respect to the center of the jig hole is measured, and (4) the drill is positioned in relation to the imaging means to correct that error. Subsequently, the drill is not moved. The substrate is bored by means of the drill after two predetermined reference marks are aligned, respectively, with the imaging centers of two imaging means by adjusting the position of the substrate of boring object on which two predetermined marks are put.