High quality materials and fine machining tolerances are indispensable aspects in gas- steam turbine manufacturing.
MAN Turbomacchine S.r.l. De Pretto, worldwide leader in turbine manufacturing, has found in Super-Quad milling chucks the best partner. 
The machining
The machining of the external face of the blade is made in vertical position, using standard Super-Quad chucks. A series of fixed pole extensions expressly shaped let the magnetic power transferred from the chuck to the piece, with maximum clamping force. 
Tailor-made adjustment
MAN Turbomacchine modified the pole extensions in order to recreate in negative the shape of the blade and setting the references to allow a quick and repeatable setup of the piece. The use of some small Super-Quad modules with 4, 6, 8 poles directly clamped on the base magnetic chuck, allows to clamp even the more curvilinear blades. Advantages
Drastic reduction of setup time and tool consumption. Improvements in quality of the finished parts and total repeatability of the process.
No need of any additional machining procedure.
After this positive experience, MAN Turbomacchine purchased additional Super-quad chucks for various machines in their facilities.  MAN Turbomacchine - De Pretto
Schio (VI) – Italy
www.manturbo.com
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