The effect of wheel eccentricity and run-out on grinding forces, waviness, wheel wear and chatter

The effect of grinding-wheel eccentricity on grinding forces, wheel wear and final waviness height was studied. Eccentricity was evident in force oscillations and acceleration and audio measurements. A model was developed to predict final scallop-profile shape from grinding parameters and eccentricity. Recommendations are given on detecting eccentricity and determining when eccentricity is tolerable.

► Grinding-wheel run-out (including eccentricity) leads to scallop-pattern chatter. ► Acceleration and noise measurements can be used detect run-out. ► Wheel run-out causes force and power surges and increased wheel wear. ► Scallop height depends on wheel eccentricity, arc-length and chatter wavelength. ► A model was developed to predict chatter scallop height from grinding parameters.