The cutting performance of mechanical blade depends on the grinding quality to a certain extent, and the grinding quality depends on the grinding equipment and reasonable grinding process. Blade grinding equipment, it is recommended to use vertical shaft knife grinder, the Angle of the blade is easy to ensure. It is suggested to choose white corundum (code WA) as the grinding wheel, which is not easy to generate heat during grinding. Meanwhile, coolant must be continuously poured on the contact surface between the cutting edge and the grinding wheel during grinding. Overheating and discoloration of the cutting edge are strictly prohibited. Metallic emulsion no. 1 is recommended. The whole grinding process is best divided into coarse grinding, fine grinding and smooth, rough, fine grinding on the knife grinder, smooth need to knife grinder and manual

The steps of leveling are:

1. Think the blade has been polished (no spark), at this time do not need to give the feed, let the knife grinder reciprocating several trips, how much depends on the length of the blade, short is less travel.

2. Remove the blade from the knife grinder and use the whetstone for manual grinding to obtain excellent sharp edges. The method is to gently remove the tiny burr generated by the knife grinder on the blade edge with the oil-soaked stone, and then rotate and move the stone to the full length of the blade tightly on the front knife surface.

3. In the same way mobile oil stone to the blade span after fine grinding surface, but the sharpening stone slightly tilting Angle, with no more than 1 ° advisable after grinding by the above method, a blade of ideal in order to be complete. Wedge Angle is also known as the cutting edge Angle, it is a direct impact on the cutting performance of the main Angle, the Angle depends on the size of the cutting.

Paper cutting machine is a necessary equipment for printing enterprises, and it is widely used in printing and publishing industry, paper industry, packaging industry, decoration and other industries. Its most basic function and application is cutting. The final actuator for cutting is the blade. On the one hand, the quality of the blade and its reasonable use directly affect the cutting quality, on the other hand, unreasonable grinding Angle and use will seriously damage the precision and life of the paper cutter. So using and maintaining a sharpened blade is the first step in the application and maintenance of a paper cutter. The material and composition of the cutter blade