A thermo-mechanical machining method for improving the accuracy and stability of the geometric shape of long low-rigidity shafts

Abstract The article presents a new thermo-mechanical machining method for the manufacture of long low-rigidity shafts which combines straightening and heat treatment operations. A fixture was designed used in tests involved axial combined with quenching operation (performed to increase corrosion resistance steel as stock material). study showed that an analysis initial deflections semi-finished different dimensions determination maximum corrective deflection device could be basis performing shaft workpieces simultaneous correction workpiece. is corrected by stretching fibers material, at any cross-section shaft, up yield point generating residual stresses symmetrical axis These processes allow accuracy stability geometric shape shaft.