Title:
METHOD OF MACHINING WORKPIECE, AND PRINTED CIRCUIT BOARD BORING MACHINE
Document Type and Number:
Japanese Patent JP2002307220
Kind Code:
A
Abstract:
To provide a printed circuit board boring machine that can improve machining quality and machining efficiency while preventing machining by a defective drill.
A tool diameter detector provided with a sensor 31 is disposed on a table. Prior to machining, the tip side diameter D1 of a cutting edge part 1c of a drill 1, and the base end side diameter D2 spaced by a predetermined distance from the tip, are measured, and machining is performed only when both diameters almost coincide with each other.
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Inventors:
Osanai, Takumi
Kawamura, Masahiro
Nagasawa, Katsuhiro
Kawamura, Masahiro
Nagasawa, Katsuhiro
Application Number:
JP2001000110648
Publication Date:
October 23, 2002
Filing Date:
April 09, 2001
Export Citation:
Assignee:
HITACHI VIA MECHANICS LTD
International Classes:
B23Q17/09; B23B41/00; B23B49/00; B23Q17/22; B26F1/16; (IPC1-7): B23B49/00; B23B41/00; B23Q17/09; B23Q17/22; B26F1/16
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