| 摘要 |
<p>The present invention relates to an auto chucking device for a CNC lathe, in which a draw bar of the CNC lathe moves forward or backward to allow a collet to chuck or release an object to be processed. More particularly, since a collet is compressed inward by a collet nose and an inclination surface of the collet, which elastically move forward by a draw bar in a state where the draw bar and the collet are separated from each other, chucking of the object to be processed can be improved, and high precision processing can be enabled. Also, the collet and the collet nose are built in a collet nose cap, and the collet is spaced apart from the collet nose to restrict an effect against external stress. A center is added inside the collet to apply a center support manner, except for the collet so that the object to be processed is supported by both sensors. The draw bar and the collet are separated from each other to operate the collet regardless of a degree of the draw bar. Since concentricity of the center is adjusted by changing a position of the center by using an adjustment bolt disposed on a circumference of an adaptor, the high precision process of the object to be processed can be enabled.</p> |
