Abstract:

Aimed at high accurate truing of arc wheel in optical aspheric grinding, a GC cup truer was adopted for the arc wheel truing, and the truer’s geometric error and principle error were analyzed. The effects of all errors on the arc wheel truing and optical aspheric grinding were discussed. It was found that the positioning tilt error was the main error in the arc wheel truing. Truing experiment results show that the residual error of fitting radius is bigger and its distribution coincides with theoretical analysis. The optical workpiece surface error distribution is also similar to theoretical analysis in the aspheric grinding. After antitilting, the experiment results show that the surface error distribution is changed and the surface accuracy is improved.

Key words: machinofacture technique and equipment, GC cup truer, arc wheel truing, error analysis, aspheric grinding