Evaluation of cup-wheel truing and error compensation in aspheric grinding

The cup-wheel is adopted in arc grinding wheel truing and the non-contact displacement sensor is used for arc grinding wheel measurement. The radial run-out error and arc radius error after meshed are proposed to evaluate the quality of the truing. The matching truing measurement parameters are calculated based on the principle of aspheric grinding, by which truing error compensation grinding is carried out. The results of truing experiment show that the cup-wheel truing is an ideal truing method. Compared to tradition grinding, the effect of truing error compensation is obvious. The surface form errors after two compensation grinding decrease by 36.5% and 28.1%, respectively, which means the truing error compensation grinding can effectively improve accuracy.