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公开(公告)号：US20240342808A1
公开(公告)日：2024-10-17
申请号：US18754709
申请日：2024-06-26
申请人： BLACK & DECKER INC.
CPC分类号： B23B51/02 , B28D1/146 , E21B10/42 , E21B10/43 , E21B10/54 , B23B2226/75 , B23B2251/14 , B23B2251/204
摘要： A one-piece cutting head for a drill bit includes a main cutting edge that extends between radial extremities of the cutting head. The main cutting edge is disposed between main rake surfaces and main relief surfaces. Each main rake surface includes one or more rake facets, and each main relief surface includes one or more relief facets. Adjacent rake facets and relief facets define a primary transverse edge therebetween that extends away from the main cutting edge. The cutting head further includes a plurality of side cutters that are transverse to the main cutting edge and that propagate from the primary transverse edge to a radial extremity of the cutting head. Each side cutter includes a side cutting edge between a side cutting rake facet and a side cutting relief facet.
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公开(公告)号：US20220297204A1
公开(公告)日：2022-09-22
申请号：US17692428
申请日：2022-03-11
申请人： BLACK & DECKER INC.
摘要： A one-piece cutting head for a drill bit includes a main cutting edge that extends between radial extremities of the cutting head. The main cutting edge is disposed between main rake surfaces and main relief surfaces. Each main rake surface includes one or more rake facets, and each main relief surface includes one or more relief facets. Adjacent rake facets and relief facets define a primary transverse edge therebetween that extends away from the main cutting edge. The cutting head further includes a plurality of side cutters that are transverse to the main cutting edge and that propagate from the primary transverse edge to a radial extremity of the cutting head. Each side cutter includes a side cutting edge between a side cutting rake facet and a side cutting relief facet.
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