| 摘要 |
<p>PROBLEM TO BE SOLVED: To measure an edge of a tool while chucking a workpiece on a main spindle by arranging a sensor to output a detecting signal by means of contact or noncontact with the tool edge in a position offset from the main spindle axis so as to be freely movable between a housing position and a measuring position. SOLUTION: An arm 13 is rotated up to a measuring position B from a housing position A. Since the arm 13 presses a stopper member 27b to an abutting member 28b by engagement between an engaging member 17 energized by a spring 18 and a notch groove 16a, a measuring part 14 is accurately positioned in the measuring position B. At this time, a sensor 14a exists in a vertical plane containing the main spindle axis C and the X shaft axis, and is positioned in a just above position of an edge of a tool. Therefore, the sensor 14a outputs a detecting signal by contact with the edge of the tool by lowering a spindle stock 7 along a guide rail by driving a motor.</p> |
