Grinding wheel is also called fixed grinding tool. It is mainly used for precision grooving and cutting. It is the main type of grinding tool in the grinding process. It has the characteristics of good surface quality, high material utilization rate and large contact area. Ultra-thin cutting wheel The general rules of use are as follows:
1). The durable cutting off wheel has a thin thickness (more than 0.5mm), a small outer diameter (20-100mm), fine grain size, high dimensional and shape accuracy, lightweight, and is generally used under high-speed conditions. It is 5000-40000 rpm.
2). The base type cutting wheel is mostly thick (0.5-2mm), large diameter (100-200mm), coarse grain size and low precision. It is generally used under the condition of lower speed and deep depth of cut. The general speed is 3000-10000 rpm.
3). The ultra-thin cutting wheel uses fine grain size, and generally the thinner the thickness of the abrasive, the finer the grain size will be, and the surface quality is better. However, the finer the grain size of the abrasive, the lower the cutting sharpness, and the feed rate should be reduced accordingly. To adapt to the machinability of abrasive grain size.
4). The cutting depth of the ultra-thin cutting wheel is generally determined by the user according to the cutting part. Most of the cutting is made by the slow-feed grinding process, and the depth is cut once. This is because the cutting wheel is thin and the cutting conditions are poor (mostly 3 faces) The workpiece) makes it difficult to dissipate heat, so it is necessary to increase (flow, pressure) cooling of the cutting zone.
5). When the cutting wheel is used immediately when the user is used on the machine, it is recommended to increase the cutting speed or reduce the feed rate. When the cutting wheel is used for a period of time, it is recommended to use it. 2. The appropriate size of the oil stone is used to sharpen the surface of the grinding wheel to adjust its sharpness.
6). The surface quality and cutting performance of the workpiece are mainly related to the abrasive grain size of the high performance cutting disc. The finer the grain size, the better the surface finish. It is also related to the material, hardness, cutting amount, machine tool conditions, processing requirements, and other factors.