The general rules for ultra-thin cutting grinding wheel grinding are as follows: (

1) The integral cutting grinding wheel has original diameter (mostly below 0.5 mm), small outer diameter (20.0-152.4 mm), high particle size and precision, light weight, and is generally Used under high rotation speed conditions, the rotation speed is 10 000 - 60 000/mi; the base type has large cutting (0.2-2.0 mm), large diameter (75 -305 mm), low precision and low precision. Generally, large cutting speed is used at low rotation speed. For use in deep conditions, rotate at 3 000-10 000 r/min

(2) Compared with thick grinding wheels, ultra-thin cutting grinding wheels mostly use fine grain sizes (generally, the thinner the thickness, the finer the abrasive grain size). And, cutting grinding wheel

Particle size directly affects the integrity of the machined surface, cutting efficiency and grinding wheel life. Coarse grain size will reduce the load of the cutting grinding wheel, improve cutting efficiency, and extend service life; fine grain size will reduce cutting chipping, reduce the roughness of the machined surface, and reduce cutting efficiency.

(3) The selection of grinding wheel speed is generally determined by the user based on the material being cut, technical

conditions, machine tools and cutting grinding wheels used.

(4) The cutting depth of ultra-thin cutting grinding wheels is generally determined by the user based on the cutting parts and clamping methods. Most of the cutting uses step-feed grinding technology and high-speed fast-forward grinding technology. The depth is usually cut in one go, and it requires Increase cooling of the cutting area and cutting wheel.

(5) There is a water tank type cutting grinding wheel on the outer circle, which can improve the chip removal ability after cutting and reduce the cutting load. It is very beneficial for cutting sticky or thick materials, and the cooling effect is also good; cutting without water tank type Grinding wheels are recommended for cutting thin materials.

(6) The amount of exposure of the ultra-thin cutting grinding wheel can generally be determined based on the cutting depth and the thickness of the cutting grinding wheel. The exposure of the cutting grinding wheel is optimal when it is 1.3-2.0 times the cutting depth; at the same time, the thinner the cutting grinding wheel, the better The exposed amount of the grinding wheel should be smaller

(7) The ultra-thin cutting and measuring grinding wheel has generally been shaped and sharpened before leaving the factory, and the user can use it directly. For further shaping, you can use green silicone oil stone, the particle size of which is 1 to 2 sizes coarser than that of the cutting grinding wheel; for further sharpening or for sharpening after a period of use, you can use green carbide silicone oil stone, whose particle size is 1 to 2 sizes finer than that of the cutting grinding wheel. The number is ideal. It is generally recommended that shaping and sharpening be performed on the machine.

(8) When the cutting grinding wheel cannot cut or the workpiece chips after being used on the machine, the machine tool speed should be increased or the feed rate should be reduced; The whetstone sharpens the grinding wheel surface to adjust its sharpness.

(9) When users use high-precision ultra-thin ultra-hard materials to cut grinding wheels or new materials for the first time, it is recommended to choose a smaller cutting feed speed. Generally, the feed speed should be slow when cutting brittle materials and soft when cutting soft materials. The cutting speed of cutting materials is faster than cutting hard materials, and the cutting speed of workpieces with shallow cutting depth is faster than that of workpieces with large cutting depth.

(10) User operating conditions are also the main factors affecting cutting performance, especially the rigidity and accuracy of the machine tool (axial movement of the spindle, radial runout, shoulder end face runout, verticality, parallelism, and normality of the spindle and the feed guide rail). Orchid parallelism, dynamic balance accuracy, etc.), cooling system (cooling medium, hydraulic supply pressure, flow rate, method, etc.), working environment, clamping method and operating process, etc. The cutting piece can be used as a single piece or in combination with multiple pieces, as shown in Figure 2.85.