Paper cutter blade use, maintenance and sharpening
Blade sharpening The cutting performance of a mechanical blade depends to a considerable extent on the sharpening quality, which in turn depends on sharpening equipment and a reasonable sharpening process. Sharpening equipment, it is recommended to use a vertical shaft sharpening machine, the angle of the blade can be easily guaranteed. It is recommended to choose white corundum (code name WA) for the grinding wheel. It is not easy to heat up during sharpening. At the same time, coolant must be continuously poured on the contact surface between the cutting edge and the grinding wheel during sharpening. It is strictly forbidden to overheat the cutting edge and discolor. Metal Emulsion No. 1 is recommended. The whole sharpening process is best divided into rough grinding, fine grinding and smoothing. Coarse grinding and fine grinding are carried out on a knife sharpener, and smoothing needs to be carried out by a knife sharpener and by hand. The steps of smoothing are: 1. It is considered that the blade has been ground well (no sparks are seen). At this time, it is not necessary to give the feed, and let the sharpener reciprocate several strokes by itself. The stroke depends on the length of the blade, and the short stroke is less. 2. Remove the blade from the sharpener and grind it by hand with a whetstone to obtain an excellent sharp edge. The method is to use oil-soaked whetstone to gently remove the tiny burrs generated by the sharpener on the cutting edge, and then press the whetstone against the rake face to rotate and move the whetstone to the full length of the blade. 3. Use the same method to move the whetstone Tungsten Steel Inserts to the full length of the blade to fine-grind the flank, but tilt the whetstone at a slight angle, preferably no more than 1°, after sharpening according to the above method, an ideal blade is completed. The wedge angle is also called the edge angle. It is the main angle that directly affects the cutting performance. The size of the angle depends on the cutting object. Paper cutter is an essential equipment for printing enterprises, and is widely used in printing and publishing industry, paper industry, packaging industry, decoration and other industries, and it is widely used. Its most basic function and application is cutting. The final executive element for cutting is the blade. On the one hand, the quality of the blade and whether its use is reasonable directly affect the cutting quality. On the other hand, the unreasonable Cutting Inserts sharpening angle and use will seriously damage the accuracy and life of the paper cutter. Therefore, using maintenance and sharpening the blade is the first step in the application and maintenance of the paper cutter. The material and composition of the blade of the paper cutter The blade of the paper cutter is made of two parts, the blade edge and the blade body, which are welded at high temperature. The blade part is usually made of HSS (HIGH SPEED STEEL) or high-hardness chromium-tungsten-manganese-manganese CrWMn steel, and cemented carbide is used individually. The body part is usually made of low carbon steel. After the blade is quenched, the hardness of the blade can reach 60-64HRC.
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