Four factors influencing the tool use effect and life of A4 paper cutter

The sharpness and service life of the cutters of the A4 paper cutter greatly influence the production efficiency of this A4 paper cutter. The use effect and life of the cutting tool depend on four factors: the material of making the knife, the shape and angle of the sharpening knife, the quality of the sharpening knife, and the type of material being cut.

    1. Material of knife making

    The cutter of the single-chip A4 paper cutter is made of high-temperature insert welding of the blade and the blade body. The blade is made of high hardness chromium tungsten manganese steel, and the blade body is made of low carbon steel. The durability of the cutting tool is directly proportional to the hardness of the steel used for the cutting edge. High-quality blades, the hardness of the cutting edge after quenching can reach HR55~60.

    Second, the shape and angle of the sharpening knife

    On a single-sided A4 paper cutter, a single sharpened cutter is generally used, and the sharpening angle is between 19° and 23°. However, this shape of the sharpening edge is not an ideal shape. The beveled surface of the cutter is subjected to the pressure from the part of the paper stack being cut during the cutting process, so that under the friction of the paper edge, the bevel of the blade is very Will be worn out soon. The double-edged knife has obvious advantages. Its sharpening helps to reduce the load of the machine and improve the accuracy of cutting.

    The smaller the sharpening angle of the cutting tool, the sharper the cutting edge, the lower the resistance of the cut object to the knife, the wear and power consumption of the machine are also small, and the cut product is neat and the cut is smooth. However, if the sharpening angle is too small, the strength and wear resistance of the cutting edge will be correspondingly reduced, and the cutting speed and cutting quality will decrease. Therefore, the angle of the sharpening edge should be as small as possible when the tool material permits and considering the magnitude of the shear resistance of the cut object.

    3. Quality of sharpening

    The quality of the sharpening depends on the production materials and equipment, the sharpening process specifications and the technical level of the operator. The higher the quality of the sharpening knife, the longer the service life of the cutting knife, the better the cutting quality.

    4. Types of cutting materials

    During the cutting process, the speed at which the knife edge becomes blunt is related to the wear resistance of the material being cut. When cutting paper, the speed at which the blade becomes blunt depends on the texture of the paper and how hard the ash content is. When cutting harder paper with higher ash content, the faster the blade becomes dull.

    The above are the four major factors that affect the use of A4 paper cutter tools.