The Dynamic Behavior of Surface Grinding: Part 2—Some Surface Grinding Tests

Abstract

In Part 1 of “The Dynamic Behavior of Surface Grinding”, a mathematical formulation for surface grinding was developed. The analysis led to several interesting results. As a part of a test program these results were evaluated. The tests were run on an especially equipped Jones-Shipman surface grinder. The machine was so designed and instrumented that the wear coefficients for both the wheel and workpiece as well as the dynamic character of surface grinding vibrations could be monitored for varying, controlled dynamic conditions. The tests substantiated the prediction of the mathematical theory. That is, for three different test conditions the ratio of the chatter frequency to the uncoupled system resonant frequency was found to agree with the theory. Also, a lobe precession test showed that the experimentally measured lobe precession rate was compatible with that predicted by the mathematical model.