CUTTING TOOL GRIPPING TOOL

摘要

This cutting tool gripping tool to be attached to a cutting machine while one end of a rod shaped cutting tool is inserted and secured in an attachment hole contains: a damping alloy tube body which is formed from a damping alloy having a component composition containing in mass% 16.9 to 27.7% of Cu, 2.1 to 8.2% of Ni, 1.0 to 2.9% of Fe, and 0.05% or less of C, the remainder being Mn and unavoidable impurities and which has a threaded outer circumferential surface and a center through hole serving as the attachment hole along the lengthwise direction; and a rigid retention tube body which is formed from a material having a larger Young s modulus than the damping alloy and which has a threaded tube inner surface. The damping alloy tube body having a threaded outer circumferential surface is threadably secured to the threaded tube inner surface of the rigid retention tube body.