CUTTER FOR CUTTING BRITTLE MATERIAL, SCRIBER USING THE SAME AND SCRIBING METHOD

摘要

PROBLEM TO BE SOLVED: To overcome the problem that a perpendicular crack effective in terms of a scribing start point is not obtainable because of the difficulty in setting a suitable scribing pressure from the beginning of the start of scribing. SOLUTION: A cutter head (1b) is freely vertically movably held and is kept energized downward by a coil spring (13). When the cutter head is pushed in to the prescribed amount by overcoming the energization of the coil spring, the deformation of the coil spring is instantaneously released by trigger machines (11 and 12) so that impact force is transferred to a knife blade (3) of the cutter head by the restitutive force of the coil spring.