| 摘要 |
PURPOSE:To enable a tool of being mounted and dismounted readily by moving it in one direction by mounting a holder having a tapered groove thereon in such a manner that the holder can be moved in the same direction as the tapered groove and forming a tool mounting/dismounting opening beside the tapered groove. CONSTITUTION:A holder 10 on which a tapered groove 10 a is formed is mounted movably in the same direction as the tapered groove 10a. The tapered groove 10a is formed that the effective tool-maintaining sectional angle theta thereof made from the center line of the tapered groove 10a exceeds 180 deg.. Furthermore, a tool mounting/dismounting opening 10e is formed beside the tapered groove 10a. The holder 10 is driven to move in the direction of the tapered groove 10a, that is, the holder 10 is moved only in the transfer direction thereof via the tool mounting/dismounting opening 10e, whereby just completing the mounting/dismounting of a tool 17. |
