公开(公告)号：US3555964A

公开(公告)日：1971-01-19

申请号：US3555964D

申请日：1968-10-18

申请人： LAWRENCE T FLEMING

发明人： FLEMING LAWRENCE T

IPC分类号： B23B47/24 ,  B23B51/00 ,  B23Q16/00 ,  B44B3/00 ,  B44B3/06 ,  H02G1/12 ,  H05K1/11 ,  H05K3/00 ,  H05K3/28 ,  B23C3/00 ,  B26D1/12

CPC分类号： B23Q16/005 ,  B23B51/00 ,  B23B2228/28 ,  B23B2251/14 ,  B44B3/007 ,  B44B3/061 ,  H02G1/1265 ,  H05K1/118 ,  H05K3/0047 ,  H05K3/281 ,  H05K3/288 ,  H05K2203/0207 ,  H05K2203/0228 ,  Y10T407/1948 ,  Y10T408/14 ,  Y10T408/172 ,  Y10T408/18 ,  Y10T408/21 ,  Y10T408/89 ,  Y10T408/909 ,  Y10T408/99

摘要： A device strips circular areas of insulation to expose the flat conductors in flexible printed circuits, flat electrical cables, multilayer circuit boards and the like, to permit making electrical connections thereto. The basic principle of operation resembles that of an end mill or drilling machine. The new machine employs rotating cutters of novel shape which cut more readily through insulating films and sheets than through metals such as copper, and the machine has a precision depth stop. Both features prevent cutting through the thin foil conductors. The depth stop may be set so that the cutter penetrates the foil by a small fraction of its thickness, exposing a clean metal surface for soldering. The bottom of the cut is visible during the cutting operation.