Method of machining workpiece and boring drill

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United States of America Patent

PATENT NO 10213846
APP PUB NO 20170259352A1
SERIAL NO

15507514

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Abstract

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A method of machining a workpiece is provided that is capable of forming a fresh air inlet in an arbitrary position in an outer shell of a container. According to the present invention, a method of machining a workpiece is provided that includes: machining to form a round hole in a workpiece using a boring drill having a tubular end portion, the end portion provided with a flat surface and a notch, and having a blade on a side of the notch, by pressing the flat surface against the workpiece while rotating the drill to contact the blade with the workpiece.

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Patent Owner(s)

Patent OwnerAddress
KYORAKU CO LTD598-1 TATSUMAE-CHO NAKADATIURI-SAGARU KARASUMADORI KAMIGYO-KU KYOTO-SHI KYOTO 602-0912

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aihara, Kousuke Kanagawa, JP 3 18

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