Grinding Wheel Performance

Grinding Wheel Performance

The performance of a diamond tool for glass application can be evaluated under various criteria. The importance of any criteria depends on user requirements.

Diamond wheels

The various criteria for evaluating diamond wheel performance are:

Life between retrue

The amount of material removed by the sides of the groove profile is more than that removed by the center. Hence, the sides of the groove wear off faster than the center, thereby losing its profile. For a pencil edging wheel, the radius of the groove becomes flatter as the wheel is used. After the groove has lost its profile, it affects the edge finish to such an extent that it starts chipping. The wheel is then sent for retrueing.

In certain cases, there may be a flare out on the bottom edge of the glass at the cutting station. This edge flare leads to additional material removal from one side of the diamond groove. This results in the loss of the groove profile with a wear more on one side of the center of the profile, or with the formation of a deep groove at the section where the edge flare id ground by the diamond. This again leads to glass chipping and wheel removal.

The life of the wheel between retrue is calculated by the number of linear meters of glass ground.

Total life

The total life of the wheel is the total number of linear meters ground by the wheel. This is calculated by the life between retrue multiplied by the number of the retries plus one.