The basic concept of ordinary abrasive tools 1-1 the meaning of ordinary abrasives Abrasives are tools that bond abrasives to certain requirements, such as sharp and durable cutting wheel, and tiles, oilstones, grinding heads, abrasive pastes, etc., for grinding, grinding, and polishing workpieces. 1-2 structure of ordinary abrasive tools The grinding tool consists of three elements: abrasive grains, binders, and pores. The abrasive body is the main body of the grinding tool. The workpiece is exposed as a cutting edge by a shuttle angle exposed on the surface of the grinding tool. Bonding agent-bonding material, It acts as a fixed abrasive to give the tool shape, sufficient strength, and the required hardness. The vent is the gap inside the grinder, which has the effect of chip evacuation and the containment of coolant. The volume relationship of the three is: V abrasive ten V combined with punishment ten C vent: 100% In order to improve the cooling, lubrication and roughness properties of the abrasive tool, the substance filled with the impregnating agent in the pores of the grinding tool (such as sulfur immersion and wax immersion) may also be referred to as the fourth element. 1-3 characteristics of ordinary abrasive tools Abrasives include abrasives, particle size, hardness, texture, bonding, shape, and size. 1-4 classification of ordinary abrasives Due to the grinding method, the nature of the processed materials, the conditions of use, and the technical requirements of the workpieces, there are many types of abrasive tools and the classification of commonly used ordinary abrasive tools Methods as below: 1.4.1 by an abrasive fraction Oxide abrasives: such as brown, white corundum, etc. 0 carbide abrasives: such as black and green silicon carbide. 1.4.2 by a binding agent <1. Inorganic binder abrasives: There are ceramic binders and rhombohedral binder abrasives. <2. Organic binder abrasives: There are resin binders and rubber binder abrasives. 1.4.3 according to the basic shape and method of use There are grinding wheels, oil stone, and tiles, grinding heads, etc. 1.4.4 According to the manufacturing method There are pouring, hot wax injection, pressing abrasives, etc. 1.4.5 by special purpose There is a high-speed grinding wheel, atmospheric hole grinding wheel, grinding steel ball grinding wheel, grinding thread grinding wheel, rice grinding wheel, diamond dressing grinding wheel, honing oil stone, dental grinding wheel and so on. 15 general abrasive use Abrasives are tools used to grind workpieces. In terms of its cutting effect, The abrasive grains on the 230*3*22 sharp cutting off wheel are like countless sharp multi-blade tools, which fully exploit their characteristics during the grinding process: 1 〉 can achieve high processing accuracy (1~2 grade) and better surface roughness <1~0.012 〉 2> can process hardened steel and other high-hard materials; 3 〉The processing allowance is small, which can save a lot of materials; 4> can process complex profiles such as spheres, curved surfaces or other irregular surfaces; 5> Easy to implement automation, automatic line processing, etc. Therefore, abrasive tools are indispensable grinding tools for steel, aerospace, marine, automotive, instrumentation, electronics, measuring tools, cutting tools, bearings, agricultural machinery, electrical machinery, precision machinery, and other mechanical processing industries. In addition, abrasive tools are also widely used in the grinding of non-metallic materials such as grain, wood, rubber, leather, glass, ceramics, Ore.