Do you often see a netizen asking a grinder to sharpen a knife? I grind the knife with what equipment and so on, today I will talk about some methods of grinding the knife grinder, grinding wheel polishing machine is the basic equipment for grinding the knife, today we will teach you several types of grinding knife form:
Concave grinding: Cutting out a groove on both sides of the cutter face, because it is easy to process and design, so many factory knives on the market are this kind of grinding method. The greatest advantage is that a very thin blade is formed after grinding, and the thinner the blade, the better the cutting ability. The drawback is: the thinner blade is, the more cowardly it is. It can cut or cut hard objects or tissues, but it is not suitable for chopping food. Because the longitudinal section of the blade is nonlinear, it can not be cut too deep. Concave grinding knives are not recommended for chopping operations because their blades are relatively weak. Its greatest advantage is to increase the cutting ability of the blade, especially when the blade is not wide enough (German knife factory calculated that if the blade has a thick back, so that the blade at least has the same cutting power and cutting ability. If you don't have a wide knife, you have to make up for it. The early razor is a concave mill.
Chisel grinding and blade grinding: only one side is needed for grinding. There are four advantages: easy to process: one side of the grinding only needs half of the other grinding methods, and need not be too meticulous, so save time, labor and money. Easy to grind: Except for serious harm, there is no need to grind only one side, and grinding techniques need not be as sophisticated as other grinding methods. The blade is solid: only a single edge, so the blade angle is large (about 2 degrees), and the blade is thick. Save material: In the early days of hammering knife making, this method of grinding did not need to be like other grinding methods to remove excess steel, can save steel consumption. The Aboriginal Knife of Taiwan is chisel grinding. There are three drawbacks: inaccurate cutting: when you use chisel grinding and other unilateral grinding knives to cut cane and banana apples, you will find that the two-sided grinding knife can cut the cane and banana apples into two halves accurately, while the chisel grinding knife will go out with the grinding angle. Unable to puncture too deep: Chisel grinding on the tip of the knife constitutes too much inclination, making it puncture on the formation of many obstacles. For example, you have never seen a dagger and dagger grinded with a knife. Truth of Grinding Surface: The right hand knife is grinded in a flat way (looking down from the back of the knife) on the left side of the knife, and the right side is grinded in the opposite direction. The United States has recently discovered this achievement, and although most knife factories maintain the "left-handed knife" as usual, they have switched their chisel-grinding knives to right-handed ones. Japanese chisels are all right knives.
Surface grinding: for sharpening and solid grinding method. From the end of the blade, it did not break and grind to the edge of the blade, so there was a solid blade and ridge. Compared with the above two grinding methods, this grinding method is more difficult to grind because many steels need to be grinded off during the grinding process. The blade is very thin and sharp, and is suitable for all kinds of field knives. Because it is regarded as a type from the longitudinal surface of a knife, it is also called the grinding method.
Cavalry grinding method: similar to the plane grinding method, are both sides of the knife face without groove design. It is not the same that the surface grinding method is from the back of the knife without continuous grinding to the blade, while the cavalry grinding method is from the end of the half grinding. There is also the same excellent cutting and splitting ability. Early cavalry knife is the form of grinding, so it is called cavalry grinding.
Circular grinding method: this grinding method does not have the four grinding methods as mentioned above. Other grinding methods are formed on both sides of the knife inclined or groove, and arc grinding method is in the knife blade above the formation of a double convex arc (because long like clams, so Japan also known as clam blade). This kind of grinding method is as solid as the surface grinding method, and is sharp in concave grinding. It is a very difficult form of grinding. The drawback is that if you can't do this kind of grinding, it will be very difficult to self sharpen when the blade is blunt.
