| 摘要 |
PURPOSE:To put correction of a bored hole diameter to practical use by providing a boring tool with the pushing out function. CONSTITUTION:A tip 18 is attained through moving an actuator 3, followed by pushing a lever 5 by means of a strap 3A, and pushing out a stopper pin 7 into a main body 9, and subsequent fixation of a tire 10A. When a main shaft 1 is rotated as much as necessary for correction, a toothed wheel 10B is revolved with the main body 9. Since the tire 10A is fixed, a toothed wheel 10C is rotated by means of a toothed wheel 10B. Through deflection of an elastic body 16 around a fulcrum (part A) due to this rotation, the tip 18 fitted on the pointed end is pushed out. When correction for a position of the tip 18 is completed, the actuator 3 is withdrawn, and the tire 10A is released from fixation, then boring processing may be performed with the tip 18 in a corrected position. |
