| 摘要 |
PURPOSE:To save the manpower and to improve the productionability in the central hole boring work by forming two cams on a single cam shaft then moving an outer ring and a reciprocal drive shaft, a gripping click and a drill in accordance with the motion of each cam through a link. CONSTITUTION:A gripping cam 19 and a reciprocal cam 20 are arranged on a cam shaft 13 which is driven by a motor 17 through a deceleration gear 15. A gripping link 30 is operated through a gripping arm 21 coupled to the cam 19 so as to grip a work by means of a gripping section 9. Then a drill 6 driven by a motor 8 is reciprocated by means of a reciprocal link 31 operated by the cam 20 so as to bore the work. Since the manpower is not required in the gripping work and the reciprocating work of drill, the manpower can be saved and the productionability is improved.
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