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Japanese Patent JP7207743

B2

To provide a magnetic drilling machine which uses a permanent magnet for suction of a work-piece.SOLUTION: The present invention is a magnetic drilling machine comprising: a stationery part having a bottom surface which can suck a work-piece comprising a magnetic material; a body part which is fitted above the stationery part; a rotary blade which is fitted to the body part; and a rotary blade switch which switches on/off rotational drive of the rotary blade. A permanent magnet, which is rotatable around a rotary shaft, is provided in the stationery part, and the permanent magnet has N pole on one side with respect to the rotary shaft, and has S pole on the other side with respect to the rotary shaft. The stationery part has a lateral magnetic material on lateral both sides of the permanent magnet. A magnetic line emitted from the permanent magnet mainly passes through only the lateral magnetic material in the first state where S pole and N pole are aligned in a substantially vertical direction, and mainly passes through the lateral magnetic material and the work-piece in the second state where N pole and S pole are aligned in a substantially horizontal direction. A stationery part switch, which rotates the permanent magnet between the first state and the second state, is further provided.SELECTED DRAWING: Figure 4

Kiyoshi Hirosawa
Eiji Sone
Yoshiaki Otsuki

JP2020018596A

January 18, 2023

February 06, 2020

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Ikura Seiki Co., Ltd.

B23B45/14; B23B45/02; B23B47/00

JP2011251370A
JP61252008A
JP61172712U
JP56104879U

US20170217010

Shinichiro Tanaka
Yoshi Kazuhiko Ta
Hiroyuki Suda
Matsushita Mitsuru
Ichiro Kurasawa
Yasushi Yamamoto
Katsuomi Isogai

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