基本信息:
- 专利标题： A DRILL BIT AND METHOD FOR MAKING A DRILL BIT
- 申请号：PCT/IB2019/055227 申请日：2019-06-20
- 公开(公告)号：WO2019244106A1 公开(公告)日：2019-12-26
- 发明人： SINNOTT, M. Mary
- 申请人： MAESTRO LOGISTICS, LLC , SINNOTT, M. Mary
- 申请人地址： 5113 Southwest Parkway Suite 150 Austin, TX 78735 US
- 专利权人： MAESTRO LOGISTICS, LLC,SINNOTT, M. Mary
- 当前专利权人： MAESTRO LOGISTICS, LLC,SINNOTT, M. Mary
- 当前专利权人地址： 5113 Southwest Parkway Suite 150 Austin, TX 78735 US
- 代理机构： ANDERSON, Lauren F.
- 优先权： US62/688,511 20180622; US62/732,793 20180918
- 主分类号： B23B51/02
- IPC分类号： B23B51/02 ; A61B17/16 ; B23P15/32
摘要：
A drill bit (100) for forming a round hole in a workpiece, includes a cylindrical shank (102) having a longitudinally extending fluted portion (104) with opposed first (106) and second (108) ends, and defining a longitudinal axis (A) about which the shank is rotatable. The fluted portion includes opposed helical flutes (110) formed in the cylindrical surface of the fluted portion of the shank and extending longitudinally along and between the first and second ends of the fluted portion. The helical flutes each define a concave surface (112) intersecting with the cylindrical surface of the shank to form opposed flute edges (114). The first end of the fluted portion includes a cutting tip (116) intersecting the helical flutes, wherein at least one of the flute edges has a concave cross-section extending from the second end toward the first end of the fluted portion.