Schunk says that its new hydraulic compensation jaws set a new benchmark for low-deformation workpiece clamping. According to the company, it is the first time that chuck jaws for compensating the workpiece clamping process have successfully been combined with centrifugal force compensation, vibration-damping characteristics and micron-precision concentricity.

The integrated oil chamber innovation and clamping technology is a central feature of the new hydraulic compensation jaws. Above this are two oscillating clamping elements for clamping rough or finished component workpieces. As the jaws individually adapt to the workpiece, form tolerances in castings, for example, are reliably compensated. Compared with conventional three-point clamping, the number of clamping points is doubled, which lowers workpiece deformation. Obtainable roundness is also increased.
At high speeds, the hydraulic clamping system automatically guarantees centrifugal force compensation, which ensures that the clamping force is always reliably maintained. In order to minimise workpiece deformation, the clamping force can be considerably reduced in comparison with previous solutions without restrictions on process reliability.
For maximum precision on the component, the concentricity can also be adjusted with micron-precision on the chuck jaws. Additionally, the vibration-damping characteristics of the oil chamber system benefit the surface quality of the workpiece, while tool life is increased.
For further information www.schunk.com