The use of grinding wheels is more extensive than other abrasives, and the use of grinding wheels is the largest, the use of grinding wheels on the choice we must know in advance, in order to choose a high quality quantity. The following is to share with you the selection and installation of grinding wheels.
1. identification and selection of grinding wheelsand selection of grinding wheels
The shape and size of the 4.5 inches grinding disc are mainly selected according to the condition of the grinder and the shape and material properties of the workpiece. Generally, after selecting the grinding wheel, the appearance and crack identification are needed, but sometimes the cracks in the grinding wheel is not easy to observe, it is necessary to use sound test method, such as tapping the sound with a mallet, sound salted is a good grinding wheel without cracks.
As for the selection of grinding wheels should be considered comprehensively, in considering the size, generally should be as large as possible to choose the outer diameter; longitudinal grinding should choose a wider grinding wheel; grinding the inner circle, the outer diameter of the grinding wheel to take about 2/3 of the workpiece aperture. It should be noted that the line speed of the depressed grinding disc in stock is not allowed to exceed the marked value.
2. balance and installation of grinding wheels
The unbalanced grinding wheel will produce vibration at the turn of the cylinder speed, which will affect the machining quality and the precision of the machine tool. The main reasons for the unbalance are the uneven density, asymmetric geometry and eccentricity of the grinding wheel. Therefore, the 4.5 inches grinding wheel must be balanced before installation. There are two kinds of balancing for grinding wheels: static balance and dynamic balancing.
Static balance must be balanced when grinding speed and grinding accuracy. For large diameter grinding wheels, it is possible to produce unbalance due to excessive wear and tear of the grinding wheels after a period of use, which requires balancing again.