| 摘要 |
<p>The present invention provides a tool holder attachment structure that allows a tool holder to be firmly attached to the main shaft of a machining tool and that allows the use of general- purpose tool holders with simple structures. A holder attachment hole (20) is formed at a free end section of a main shaft (1). A ring- shaped engagement locking is movably mounted in the holder attachment hole (20) so that it can move along the axis. The engagement locking member (30) includes a tapered engagement hole (31) in which the a shank (10) of a tool holder (3) tightly engages. A flat spring (40) firmly biases the engagement locking member (30) outward along the axis. The shank (10) of the tool holder (3) engages with the tapered engagement hole (31) of the engagement locking member (30), and the shank (10) of the tool holder (3) is firmly secured to the main shaft (1) via the engagement locking member (30). <IMAGE></p> |
