3 Factors Affect the Sharpness of Knife Sharpening Machines


Blade knife sharpening machine sharpness is affected by many factors, the following content is a few of the main factors affecting the sharpness of the sharpening machine, let’s take a look at it!

First, the impact of the knife sharpening machine installation and adjustment on the grinding knife.

(1) knife sharpening machine installation should pay attention to the stability, to prevent vibration, the fasteners are firmly connected, and grinding knife plate rotation should be smooth, to prevent jumping and swinging. Otherwise, grinding is not sharp blades, and the appearance of serrated edges, etc.

(2) Blade grinding knife plate should be vertical with the horizontal plane, otherwise, it will not grind sharp blades.

(3) knife sharpening machine frame position should be from the disk surface for 6 mm, located in the middle of the disk radius, grinding frame position is not correct, easy to cause blade bias grinding. The length of the boom also affects, and shortens the grinding stroke, grinding not sharp blade.

(4) For mechanical drive type knife sharpening machine, should make the v-belt has a suitable tension, and ensure that the grinding disk reaches the rated speed. The low speed of the grinding disk affects the sharpening effect.

Second,  the abrasive composition of the impact of knife sharpening.

(1) too much emery in the abrasive; blade edge scraping up a very thick layer of emery, the edge is easy to wear, but the blade is not easy to sharpen.

(2) too little emery in the abrasive: the blade is not easy to grind sharp, blade grinding time is long, easy to anneal, deformation.


5 Factors Affecting the Sharpness of Knife Sharpening Machines


Third, the impact of the operation method on the grinding knife grinding.

(1) uneven pressure, so that the blade bias grinding, blade sharpness of each tooth is not consistent, in the swing blade, uneven pressure will make the blade in the bump.

(2) too much pressure; easy to cause blade annealing, and deformation. Shorten the life of the blade.

(3) pressure is too small, the blade can not fit smoothly on the grinding disc, easy to produce partial grinding, playing teeth and the middle bulge.

(4) swing speed is too fast; easy to scrape off the abrasive, easy to interrupt the knife teeth, and it is not easy to master the balance of the blade, resulting in uneven pressure easy to produce partial grinding and intermediate bump.

(5) swing speed is too slow, speed up the blade wear, shortens the blade life, easy to causes blade annealing.

(6) grinding stroke is short; grinding not a sharp blade, and will make the middle of the grinding disk surface soon dented, shortening the use of the grinding disk period. Therefore, the grinding stroke should be as long as possible.

(7) in the paste abrasive cloth on the grinding disc grinding time is too long: the blade is easy to anneal, and deformation.


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