| 摘要 |
Disclosed is an apparatus for sensing a position of a cutting tool in a computer numerical controlled machine tool. According to a preferred embodiment of the present invention, a housing has a gear assembly, a stopper, a driving motor and a pair of sensors. An arm includes a first sensor for sensing the position of the cutting tool in the computer numerical controlled machine tool, which moves the first sensor to a position facing the cutting tool. The gear assembly is combined to the arm to pivot the arm in a range of predetermined angles. The driving motor supplied rotation force to the gear assembly so as to pivot the arm connected to the gear assembly. The arm is pivoted about an axis of a warm wheel shaft in a range of predetermined angles. When the arm excessively pivots about the axis of the warm wheel shaft, the stopper and the warm can restrain the pivoting of the arm. |
