The ultra-thin cutting discs are mainly used for precise groove and cutting, and generally adopts the deep-cut slow-feed grinding method. It has a large grinding depth and a small feed rate. The contact area between the grinding wheel and the workpiece is large, the kerf is narrow, the metal removal rate is high, and the grinding precision is high. It has the characteristics of good surface quality and high material utilization rate.
The integral cutting disc has thin thickness (mostly below 0.5mm), small outer diameter (20-100mm), fine particle size, high size and shape accuracy, and light weight. Generally used under high speed conditions, the general speed is 5000-40000rpm.
Matrix-type cutting discs are mostly thick (0.5-2mm), large in diameter (100-200mm), coarse in particle size and low in precision. It is generally used under the condition of low speed and large depth of cut. The general speed is 3000-10000rpm.
Ultra-thin cut-off wheels are mostly fine-grained. In general, the thinner the thickness, the finer the abrasive grain size will be, and the better the surface quality will be. However, the finer the abrasive particle size, the lower the cutting sharpness, so the feed speed should be reduced accordingly. To suit the machinability of the abrasive grain size.
The cutting depth of the ultra-thin cutting disc is generally determined by the user according to the cutting part. The cutting mostly adopts the slow-feed grinding process, and the depth is cut at one time. In this way, due to the thin cutting disc and poor cutting conditions (mostly 3 surfaces contact the workpiece). It is difficult to dissipate heat, so it is necessary to increase (flow, pressure) cooling of the cutting area.
When the cutting disc cannot be cut or the workpiece is chipped when it is used at the user’s place. It is recommended to increase the cutting speed or reduce the feed. When there is no cutting or cracking after using for a period of time. It is recommended that the surface of the grinding wheel be edged with a whetstone of appropriate grain size to adjust its sharpness.
The surface quality and cutting performance of the workpiece are mainly related to the abrasive particle size of the ultra-thin cutting disc. The finer the grain size, the better the surface finish. At the same time, it is also related to the workpiece material, hardness, cutting amount, machine tool conditions, processing requirements and other factors.
Ultra-thin cutting discs are generally shaped and edged before leaving the factory, and users can use them directly. If the user needs further shaping, it is recommended to use green silicon carbide or white corundum whetstone. The particle size is 1-2 coarser than that of the cutting disc. If the user needs to edge further or use a back edge. It is recommended to use green silicon carbide or white corundum whetstone. The particle size should be 1-2 or the same number finer than that of the cutting disc.
The cutting amount is generally also related to the material to be processed, hardness, precision, and processing requirements. It is recommended to use it under the original conditions of the user when using it for the first time, and do not easily change the cutting amount.
User conditions are also the main factor affecting cutting performance. In particular, the axial runout, radial runout, flange parallelism, and dynamic balance accuracy of the machine tool directly affect the cutting accuracy of the cutting disc.