The choice of the blade sharpening angle, the quality of the sharpening, and the blade sharpening gap time affect the flatness and smoothness of the cutting edge of the paper. The general blade angle is 19 °. If the cut paper is hard, you need to To increase the angle of the blade, if you want to improve the quality of the blade, you must ensure that the coolant is sufficient to avoid the edge annealing. Before cutting, you can polish the blade with oilstone and apply soap and paraffin on the blade. , This can not only improve the sharpness and smoothness of the cutting edge, but also extend the service life of the cutting edge, and the quality of the finished product is better.

        The reason why the chip collapse occurs in actual operation is because the operator shortens the sharpening time and the coolant is insufficient, causing the edge of the blade to anneal and narrow the width. The nut must be adjusted during installation to make the blade cut into the pad If the blade is not adjusted well and the cutting depth is too deep, it will cause chipping.