公开(公告)号：WO02056123A3

公开(公告)日：2003-12-31

申请号：PCT/US0149627

申请日：2001-12-27

Applicant: EXCELLON AUTOMATION

Inventor： WEBER KURT W ,  WONG WARREN K ,  YANG CHUNMIG

IPC: B23B35/00 ,  B23B47/34 ,  B23Q11/00 ,  H05K3/00 ,  G05B19/4093 ,  G05B19/416

CPC classification number: B23B35/00 ,  B23B47/34 ,  B23Q11/0042 ,  G05B2219/45035 ,  G05B2219/45129 ,  G05B2219/49047 ,  H05K3/0047 ,  H05K2203/0207 ,  H05K2203/1476 ,  Y10T408/03 ,  Y10T408/23

Abstract: A method for drilling a hole in a work piece, such as printed circuit boards, comprises drilling to a point in a work piece and retracting said drill bit a retract distance. The retract distance is configured such that a tip end of said drill bit remains below a top surface of said work piece. The method further comprises drilling a distance greater than said retract distance into said work piece.

Abstract translation: 用于在诸如印刷电路板的工件中钻孔的方法包括钻孔到工件中的一点并且将所述钻头回缩回缩距离。 缩回距离被构造成使得所述钻头的尖端保持在所述工件的顶表面下方。 该方法还包括将大于所述缩回距离的距离钻入所述工件。