DRILLING METHOD AND DRILLING DEVICE

To provide a drilling method and a drilling device capable of efficiently performing drilling.SOLUTION: A first tip part 30 comprises: plural tips 31 arranged so as to be separated at a circumferential face on a side of a drilling direction of a cylindrical body; and a center drill arranged at the c...

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Bibliographische Detailangaben
Hauptverfasser:	KANDA SHUNSUKE, OSHITA TAKASHI, WATAKAWA BUNJI, WATABE SHOTARO, HIRATA TAKESHI, MUKAI HIROMICHI, MANO TAKAHIDE, KAKINAKA HIDEKI, SATO RITSU, KAMIJO HIROAKI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	PERFORMING OPERATIONS TRANSPORTING WORKING CEMENT, CLAY, OR STONE WORKING STONE OR STONE-LIKE MATERIALS
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Beschreibung
Zusammenfassung:	To provide a drilling method and a drilling device capable of efficiently performing drilling.SOLUTION: A first tip part 30 comprises: plural tips 31 arranged so as to be separated at a circumferential face on a side of a drilling direction of a cylindrical body; and a center drill arranged at the center of the cylindrical body and having a tip part projected from the tips 31 in the drilling direction. Using a first core bit 25 fitted with the first tip part 30, while drilling a surface of a concrete member 10 by a drill blade part 37 of the center drill, a guide groove is formed. Thereafter, a second core bit fitted with the plural tips 31 arranged so as to be separated at the circumferential face on the side of the drilling direction of the cylindrical body is inserted into the guide groove to perform drilling.SELECTED DRAWING: Figure 1 【課題】効率的に穿孔することができる穿孔方法及び穿孔装置を提供する。【解決手段】第１チップ部３０は、円筒体の穿孔方向側の円周面に離間して配置された複数のチップ３１と、円筒体の中心に配置されチップ３１から先端が穿孔方向に突出したセンタドリルとを備える。この第１チップ部３０を取り付けた第１コアビット２５を用いて、コンクリート部材１０の表面をセンタドリルのドリル刃部３７で穿孔しながら、ガイド溝を形成する。その後、円筒体の穿孔方向側の円周面に離間して配置された複数のチップ３１を取り付けた第２コアビットをガイド溝に挿入して穿孔する。【選択図】図１