| 摘要 |
(Objective) The objective is to stabilize the supporting position of a scribing wheel, so as to provide a tip holder capable of improving the linearity of the scribe line. (Instruments for solution) The scribing wheel (30) has a shape of a disk, and has a through-hole (31) on the center. Along the outer circumference of the disk, the scribing wheel has a V-shaped edge. A tip holder main body (10) has a holder groove (12) having a predetermined width, for inserting the scribing wheel (30), and also has a pair of supports (13, 14). Through-holes (15, 16) of the supports (13, 14) are inserted with sphere supports (17, 18). The scribing wheel (30) can be inserted by a pair of spheres (24, 25), and the sphere supports (17, 18), so as to freely rotate. |
