Punching die and punching machine

Abstract

The present invention can simplify the work for forming a punching die, enables stable support of blade members, enables improvement of punching accuracy, and enables enhancement of durability. A plurality of wood molded boards are formed by performing a thermo-pressure process on wood chips at a predetermined temperature and under a predetermined pressure. A die substrate is formed by stacking the molded boards and bonding them together by means of adhesive. Blade members are press-fitted into grooves formed in the die substrate by means of laser machining such that the groove penetrates through the die substrate. The densities of near-surface regions composed of regions located near opposite surfaces of the die substrate and a density of a central region composed of regions located adjacent to each other with the adhesive intervening therebetween are higher than the densities of intermediate regions located between the near-surface regions and the central region.

Dependencies are inferred from the claim text.