Image Number 3 for United States Patent #7004826.
An apparatus for smoothing gear wheels has a single smoothing wheel and two further smoothing wheels opposite the single smoothing wheel. A clamping device for axially clamping the gearwheel to be smoothed can oscillate in a direction perpendicular to its rotation. The smoothing wheels are mounted on bearing brackets, which may be tensioned against one another in such a way that the gearwheel to be smoothed positioned between them is centered and may have a predetermined force applied to it. The bearing brackets form a separate clamping unit that is movable in parallel in such a way that the axis of rotation of the gearwheel to be smoothed runs coaxially to the central axis of its clamping device, which may oscillate.