| 摘要 |
PURPOSE:To enable the stable holding of a modular tool for a machine tool against an external force by keeping the coupling hole for a cutter module in alignment via a notch and a groove. CONSTITUTION:A holder module 13 is provided with a draw bar 26 having a hooking claw 27. On the other hand, a coupling hole 17 for coupling to said claw 27 is formed at the foot 14 of a cutter module 12, and the external surface of the foot 14 is provided with a notch 19 for inserting and holding from the axial direction of the cutter module 12 and a groove 20 for holding from a direction orthogonal with said axial direction, thereby holding the phase of the coupling hole 17 of the cutter module 12 in alignment. According to the aforesaid constitution, a tool can be kept stably against an external force, easily coupled to and dismantled from the holder thereof and easily retained thereon.
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