回転鋸

Japanese Patent JP7305339

B2

The utility model provides a rotary saw. The plurality of cutting heads includes: a first cutting head (30a) which is a mountain-shaped cutter having a shape that is bilaterally symmetrical when viewed from the front cutter surface and has flat portions (37a) at the left and right centers; a second cutting head (30b) which is a right offset cutter or a left offset cutter having a flat portion (37b) and chamfered left and right, the flat portion being positioned on either the left or the right side from the center of the left and the right of the cutting head when viewed from the front cuttingsurface; and a third cutting head (30c) which is a left offset cutter or a right offset cutter having a flat portion (37c) and chamfered in the left-right direction, the flat portion being positionedon the other side of the left-right direction from the center of the left-right direction of the cutting head when viewed from the front cutting surface. The plurality of tool bits are arranged so asto repeatedly abut against the workpiece to be cut in the order of the first tool bit, the second tool bit, and the third tool bit. Accordingly, cutting or cutting resistance is reduced by a structurein which vibration is unlikely to occur even if the thickness of the blade is made thin.

WO/2005/065875	TIP SAW
JP3201609	Tungsten steel circular saw improved structure
JPS59120523	[Title of the device] Serrated knife

Yuusuke Miyachi
Shingo Muramatsu
Masanori Shioiri

JP2018229186A

July 10, 2023

December 06, 2018

Click for automatic bibliography generation  

Tenryu Saw Co., Ltd.
Makita Corporation

B23D61/04

JP2009196046A
JP2012232409A
JP2018534152A
JP2017205998A
JP10193219A
JP8187702A

Patent Attorney Corporation Prospec Patent Office

Previous Patent: Customized headphone sound quality

Next Patent: Information processing equipment