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1. (WO2018036061) SAW BLADE

Pub. No.:    WO/2018/036061    International Application No.:    PCT/CN2016/112995
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Fri Dec 30 00:59:59 CET 2016
IPC: B23D 61/00
Applicants: QIN, Huan
Inventors: QIN, Huan
A saw blade, comprising a main blade (1); the head portion of the upper end of the main blade has a cutting edge (2); the cutting edge (2) comprises a plurality of cutting edge sections which are configured such that the cutting edge section, through which the rotation axis (3) of the saw blade passes, is the zeroth step of cutting edge section (200), a first step of cutting edge section (201), a second step of cutting edge section (202) … an n-th step of cutting edge section (205) are successively provided on the right side of the zeroth step of cutting edge section (200), and the two portions of the zeroth step of cutting edge section (200) positioned on the left and right sides of the rotation axis (3) are symmetric about the rotation axis (3). The cutting edge of the saw blade is configured to be step-shaped from the middle to the two sides, solving the problem that corner regions of both sides of a straight saw blade may become stuck in the material of a work piece during processing, and solving the problem that, only corner regions contact with a work piece when the rotation direction changes, such that cutting teeth in the corner regions are subjected to much heavier wear than cutting teeth in the middle region due to a non-uniform load on the liner cutting edge. Moreover, recesses between two adjacent steps render swarfs generated during the cutting of a work piece loose and easy to discharge, thereby improving cutting efficiency.