Comparative analysis of underfloor wheel lathes with monolithic and bolted structure in terms of static and dynamic properties based on the results of FEM analyzes

The subject of the research was Underfloor Wheel Lathes de-signed to regenerate profiles running wheels and brake discs heavy rail vehicles without removing wheelsets. These machines can also be used wheel sets in trolleys dismantled from or themselves. machine tools operate a pass-through system. Two differing structure supporting sys-tem were tested: monolithic folding. Conclusions are based on re-sults FEA simulation. They concerned influence type connection between bodies static stiff-ness, forms vibrations dynamic stiffness tools.