According to the mechanical structure of a face gear grinding machine

an offset curve dressing method and a grinding wheel dresser were designed

and simulation and analysis of the dressing process were performed with VERICUT. The equation of facegear tooth profile with error caused by wheel dressing process was derived and the error cloud of facegear tooth profile was created with MATLAB

providing theory references for the research on error compensation of dressing process. The grinding and testing experiments were carried out at last. By comparing the result with the error cloud

the reason was analyzed and the error in the dressing process was compensated; the maximum tooth profile normal error was reduced by 3114%

and the precision of the tooth surface was improved.