| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous hole drilling machine capable of reducing removal operation of a guide rod, when forming an independent single hole, while securing the positioning function of the guide rod to a hole drilling rod. SOLUTION: This continuous hole drilling machine forms a slot-like continuous hole S by forming a hole H adjacent to a preceding hole P by a hole drilling bit 3 guided by the guide rod 5; and comprises an engaging hole 10 arranged on the guide part rear end composed of a rod guide 6 and the guide rod 5, and an engaging projection 11 arranged in a guide shell 1 and positioning the guide rod 5 to the hole drilling rod 4 by engageably-disengageably engaging with the engaging hole 10 of a guide part retreating together with a retreat of the hole drilling rod 4. COPYRIGHT: (C)2007,JPO&INPIT
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