Gentle finishing of hard surfaces

 With these machines the costs for polishing can be reduced to a fraction of the costs for manual surface grinding and polishing. They also ensure absolutely repeatable, high-quality finishing results within an extremely narrow tolerance band.  Walther Trowal developed these new machines specifically for treating high-value components requiring extremely careful handling for the complete finishing process.

For example, they are used for finishing the surface of turbine blades, impellers for turbo chargers, precision components for pumps and compressors as well as for orthopedic implants. The new drag machines of the M-series have a carousel with multiple rotating workstations. In turn each workstation is equipped with spindle heads containing several spindle drives onto which the work pieces are attached with special fixtures. In addition, these machines contain a stationary work bowl filled with grinding or polishing media. As the work pieces are “dragged” through the stationary media mass, the simultaneous rotational work piece movement by carousel, workstations and spindles creates different overlapping patterns, which ensure an even and intensive coverage of the complete work piece surface.