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1. Influence of installation and adjustment of knife sharpening machine:
(1) The installation of the knife sharpening machine should pay attention to stable, prevent vibration, fasteners are firmly connected, the rotation of the knife sharpening disc should be stable, prevent beating and swaying. Otherwise, the blade will not be sharpened, and the serrated edge will appear.
(2) The sharpening disc should be perpendicular to the horizontal plane, otherwise it will not sharpen the blade.
(3) The position of the sharpening tool holder should be 6 mm away from the disk surface and located in the middle of the radius of the disk surface. The position of the sharpening tool holder is incorrect, which is easy to cause partial grinding of the blade. The length of the boom also affects, and shortens the sharpening stroke, sharpening the blade.
(4) For the mechanical transmission knife grinder, the triangle belt should have the appropriate tension, and ensure that the grinding disc to reach the rated speed. The low speed of the grinding disc affects the grinding effect.
2. Influence of abrasive ingredient on sharpening:
(1) too much emery in the abrasive; The edge of the blade is scraped with a thick layer of emery, the edge is easy to wear, and the blade is not easy to sharpen.
(2) abrasive emery too little: the blade is not easy to sharpen, blade grinding time is long, easy to anneal, deformation.
3. Influence of operation method on sharpening:
(1) Uneven pressure makes the blade partial grinding, and the sharpness of each blade tooth is inconsistent. When swinging the blade, the uneven pressure will make the blade bulge.
(2) too much pressure; Easy to cause the blade annealing, deformation. Shorten blade life.
(3) The pressure is too small, the blade can not be smoothly fitted on the grinding disc, easy to produce partial grinding, toothing and middle bulge.
(4) the swing speed is too fast; It is easy to scrape off the abrasive agent, easy to break the cutter teeth, difficult to master the balance of the blade, resulting in uneven pressure and easy to produce partial grinding and convex middle.
(5) the swing speed is too slow, accelerate the wear of the blade, shorten the service life of the blade, easy to cause the blade annealing.
(6) Short sharpening stroke; Sharpen the blade is not sharp, and will make the middle of the grinding disc concave soon, shorten the service life of the grinding disc. Therefore, the sharpening stroke should be as long as possible.
(7) The grinding time on the grinding disc pasted emery cloth is too long: the blade is easy to annealing and deformation.