| 摘要 |
PURPOSE:To dispense with the setup to a preprocess machined hole check station, by pressing and advancing a movable structural body with the forward movement if a spindle head and, when the advance of an inspection feeler rod is hindered, operating a switch by relative displacement between the rod and the movable structural body and stopping it. CONSTITUTION:A spindle head 1 advances forward, a cutting tool at the tip is guide by a bush 18, thus it starts drilling to a workpiece. A detection plate 19 and a detection front frame 23 comes into a state of being advanced to a casing 11 with expansion of a spring 22. Successively a pressing body 2 presses a projection 16, while a pressure receiving block 14 compresses a spring 17 and goes forward. And the casing unitized with this goes forward, whereby the inspection feeler rod 24 installed the detection front frame 23 comes into a machined hole. If there is no abnormality, the spindle head 1 goes forward and drilling is over, but when there are an unmachined part and breakage of the cutting tool, the detection feeler rod 24, the detection frame 23 and the detection plate 19 are hindered for their advances, and a detection switch 27 comes into contact with a contact 28, thus feed of the spindle head 1 is stopped. |
