Gmn Georg Muller Nurnberg Gmbh

Georg Muller Kugellagen Fabrik K.g.

Karl Dungs Gmbh & Co. Kg

Harald Petermann

Karl G Loesch

Peter Bauer

A center-opening saw blade having an inner sawing edge is spanned or tensioned to provide an accurate, high quality cut by apparatus including inner and outer clamping collars between which an outer peripheral edge region of the saw blade is clamped, a spanner ring having an inner edge and an outer centering heel, the clamping collars being tightly affixed to the spanner ring with the clamping rings positioned in the centering heel with the inner edge of the spanner ring engaging an inner region of the saw blade to impart an initial stress thereto. A form ring is axially slidably mounted within the clamping collars and is slidable to engage an intermediate portion of the saw blade between the outer peripheral edge region clamped between the clamping collars and the inner region engaged by the inner edge of the spanner ring to impart a fine adjustment stress to the saw blade.

Apparatus for spanning a center-opening saw blade

Workpiece handling apparatus for use in grinding machines wherein a pair of unground workpieces can be transported from holding or feed apparatus to a respective pair of load positions at the grinding wheel and simultaneously unload a pair of finished or ground workpieces from the load positions and transport the same to discharge apparatus. The handling apparatus include loading apparatus comprising three carriers which simultaneously transport each of a pair of unground workpieces from a respective pickup position at the holding apparatus to a respective one of the pair of load positions and at the same time simultaneously unload each of the pair of finished or ground workpieces from a respective load position and transport the same to the discharge apparatus. The loading apparatus also includes a device for lifting a pair of the ground workpieces from the respective load positions at least slightly away from the grinding wheel over respective substantially rectilinear paths to unload the finished workpieces from the respective load positions prior to transporting the finished workpieces to the discharge apparatus.

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Nuremberg, Germany

Harald Petermann