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公开(公告)号:US20070286693A1
公开(公告)日:2007-12-13
申请号:US11727629
申请日:2007-03-27
申请人: Seung Hyun Cho , Han Kim , Sun Joong Ryu , Il Soung Yoon
发明人: Seung Hyun Cho , Han Kim , Sun Joong Ryu , Il Soung Yoon
IPC分类号: B23D77/00
CPC分类号: B23B51/02 , B23B41/14 , B23B51/08 , B23B2228/36 , B23D77/00 , B23D77/12 , H05K3/0047 , H05K2203/1476 , Y10T408/909
摘要: Disclosed is a drill bit for making a hole through stacked PCBs includes a drill part formed with drilling edges on an outer surface thereof and brought into contact with the PCBs, that is, a workpiece in which to make the hole; a reamer part formed on the rear end of the drill part and having at least one reaming edge for finishing the surface of the hole; and a shank part formed on the rear end of the reamer part and mounted to a machine tool.
摘要翻译: 公开了一种用于通过堆叠的PCB制造孔的钻头,其包括在其外表面上形成有钻孔边缘并与PCB接触的钻头部分,即在其中制造孔的工件; 钻孔部分,其形成在钻头部分的后端,并且具有至少一个用于完成孔表面的铰孔边缘; 以及形成在扩孔器部分的后端上并安装到机床上的柄部分。