Effect of blade structure and style on cutting quality

The style of the blade depends mainly on the edge angle. There are usually two types of edge angles: an arc-type edge angle milled by a vertical grinding machine; and a straight edge type edge grinding using a horizontal grinding machine. There is also a special type of edge angle that can be used to replace various soft and hard materials at any time. The method of machining such a blade is to grind an angle of 26[deg.] on its edge at 24[deg.]. It is suitable for arc-shaped edge angles for slower initial speeds. Because of the lower resistance when the edge angle is initially cut, this is mainly due to the arc's arc shape. It is worth noting that the knife cut speed is slow and should choose a smaller edge angle within the allowable range. If the knife cuts faster, the larger edge angle should be selected within the range. The relationship between the cutting speed and the edge angle of the cutter is also inseparable and should be adjusted correctly and flexibly.

In addition, the impact of blunt knives on cutting quality is also very large. Since the blades form a round head, when the blade is cut, the blades cannot cut the paper at once, but press down until the paper basket becomes a gutter. At this time, the paper basket almost becomes a whole and the blade breaks through the paper basket to complete the cutting. The corner formed on the paper basket was not completely square, but an angle of 60 degrees to the paper basket. Therefore, the probing part must be larger than the paper under the paper basket and form the so-called upper and lower blades. Therefore, it is necessary to change the knife immediately after finding out that the paper is cut, so as not to affect the cutting quality. Under normal circumstances, the blade can be changed by 1000 to 1500 times.