| 摘要 |
<p>Even when a position of a tip end 18 of a tool 17 is laterally shifted to deviate from a rotation center Ca of a tool holder 10, the position of the blade edge 18 of the tool 17 is made to coincide with the rotation center Ca of the tool holder 10 by rotating a screw member 24. The tool holder 10 comprising an attaching portion 12 which is disposed on a basal side of a shaft 13, and which is to be attached to a rotary part of a working machine and a holding portion 14 which is used for holding the tool 17, and which is disposed in a tip end side of said shaft 13, wherein, in an outer peripheral portion of said shaft 13, a first contact portion 26 and a second contact portion 27 are set in positions which are separated from each other in a longitudinal direction of said shaft 13, and runout correcting means 20 for, between said contact portions 26 and 27, generating a force by rotating the screw member 24 is disposed between said contact portions 26 and 27, said force causing an axis C of the tip end side of said shaft 13 to be displaced. <IMAGE></p> |
