Action of a grinding wheel

A surface-grinding operation is being carried out with the wheel rotating at a constant spindle speed. Will the wheel act soft or act hard as it wears down over a period of time?

Question

Action of a grinding wheel

A surface-grinding operation is being carried out with the wheel rotating at a constant spindle speed. Will the wheel act soft or act hard as it wears down over a period of time?

Accepted Answer

Referring to Eq. (9.6),

Relative grain force [latex]\propto \frac{v}{VC} \sqrt{\frac{d}{D} } .[/latex] (9.6)

it will be noted that the parameters that change with time in this operation are the wheel surface speed, V, and the wheel diameter, D. (Assuming that the diameter remains constant and the wheel is dressed periodically.) Hence, as D becomes smallar, the relative grain force increases, and therefore the wheel acts softer. Some grinding machines are equipped with variable-speed spindle motors to accommodate these changes and to make provisions for wheels of different diameter.

Question 9.3: Action of a grinding wheel A surface-grinding operation is b...

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