B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
B23B 41/00 (2006.01) H05K 3/00 (2006.01)
Patent
CA 2340527
A drilling apparatus, in which a hole and an insertion hole for a drilling rod are formed at a drilling position of a table and at a sheet pressing member capable of approaching or leaving a surface of the table, respectively, the drilling rod made of metal, capable of rotating at high speeds and reciprocating vertically are inserted through the both holes, the drilling rod has smooth peripheral and front end faces composed of at least part of a circular section having no blade, and a predetermined clearance is provided between the diameters of the hole and the insertion hole and the diameter of the drilling rod, whereby by pressing the drilling rod rotating at high speeds to the sheet, a sheet material is melted by frictional heat so that a beautiful hole is formed.
Nozawa Yasutoshi
Yamazaki Makoto
Yokoyama Yutaka
Yunoki Akio
Gowling Lafleur Henderson Llp
Ykk Corporation
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