Abstract: A retrofit kit for the regulating wheel drive of a centerless grinder. The kit includes a controller, an electric motor controlled by the controller, a cycloidal speed reducer driven by the electric motor, a belt sprocket provided on the output shaft of the speed reducer, a further belt sprocket carried by the spindle of the regulating wheel, and a toothed belt for engagement with the belt sprockets. The retrofit kit is installed by removing a cover plate on the housing of the grinder to expose an access opening, disabling the existing regulating wheel drive system by removing idler sprockets and drive chains, mounting a new belt sprocket on the regulating wheel spindle, positioning the gear motor on the housing proximate the exposed access opening with the gear reducer extending through the opening into the interior of the housing to position the speed reducer belt sprocket within the housing, and training the toothed belt around the speed reducer sprocket and the spindle sprocket.

Abstract: An electric servomotor drive system for controlling the regulating wheel of a centerless grinder is disclosed. The electric servomotor replaces the transmission normally used on centerless grinders and provides infinitely variable speed control of the regulating wheel. The system is designed for retrofitting centerless grinders manufactured by a variety of machine tool builders.