The Secret to Enhanced Precision and Wheel Life with Vertical Double-Sided Grinding Machines During the grinding process of a vertical double-sided grinding machine, the grinding face of the lower wheel is first positioned above the platform, while the grinding face of the upper wheel is aligned. An interval is maintained between the grinding faces to allow for the insertion of the workpiece. Subsequently, the workpiece is moved between the grinding faces of the upper and lower wheels by rotating the mechanical arm of the work station. As the lower spindle moves upwards, the upper spindle moves downwards to grind both sides of the workpiece. Once the lower spindle returns to its initial position, the workpiece is removed from the platform. The advantages of this grinding method on the vertical double-sided grinding machine are that the lower wheel is positioned to allow the workpiece on the carriage to slide horizontally into the grinding face, while the upper wheel is aligned above the lower wheel with a certain interval, enabling the workpiece to be inserted without contacting the wheel.