Surface grinder in the use of the surface will produce lines on the surface of the workpiece, many customers have reaction, think it is the problem of their own operation, then what is this situation, how to prevent the occurrence of this problem?
There are two kinds of reasons for grinding chatter, one is the forced vibration of the workpiece, the other is the unreasonable processing parameters, resulting in self-excited vibration of the workpiece.
It can be understood that the first kind of vibration exists in the environment, even if the grinding is not carried out and the surface grinder is started, these vibrations will exist. It is just that some vibration frequencies are close to the resonance frequency of the workpiece, resulting in grinding chatter. The suspicious components causing these vibrations include bearings installed in rotating parts, driving belts and hydraulic components. The second type is that the effect of machining has periodic changes, and its frequency coincides with the resonance frequency of the workpiece, causing vibration ripple. This kind of vibration can be reduced by adjusting the processing parameters. Or choose the grinding wheel with lower hardness and coarser grain size. Because if the rigidity of the surface grinder is different from the price, using sharp grinding wheel to reduce the grinding force can also reduce the vibration ripple to a certain extent.
On 2018-08-08 11:45:46
