How to Determine the Service Life of Grinding Wheel?

In the process of grinding, the wear of grinding wheel itself will constantly change the state of grinding wheel working face. With the longer duration of grinding, the cutting ability of grinding wheel will drop. All kinds of grinding defects appear constantly, which make the grinding not to continue.

At this point, we must dress grinding wheel, and make it return to normal state of grinding. The actual grinding time between twice dressing of grinding wheel is known as the service life of grinding wheel. The service life of grinding wheel is the important factor influencing the effect of grinding, and is particularly important especially for form grinding.

How to determine the service life of grinding wheel? It is generally based on the various phenomena produced after the wear of grinding wheel working face, through the observation and test. The grinding phenomena after grinding wheel wear mainly include: It produces self-excited vibration in the grinding process; The regenerative vibration lines appear on the workpiece surface; The increase of grinding noise; The grinding burns of workpiece surface; the increase/decrease sharply of grinding force; The decline of grinding accuracy; The increase of grinding surface roughness.

The wear and repair of grinding wheel, that is, the effect of the effective outline of grinding wheel circumference surface for machining, which is the systematic error. Especially in the precision grinding, it needs finer dressing for grinding wheel,  and setting special finishing procedures can help to keep the precise outline of grinding wheel in the longer term.