Calculation and Design of Connecting Bolts for the Combined Lower Beam of Hydraulic Forging Press

For the convenience of casting,machining,transporting,etc,the beam of large-scale hydraulic forging press has always been designed as combined structure and connected with pre-stress bolts.According to two different working situations of the hydraulic forging press,the paper carries out the stress analysis of lower beam,then calculates and designs the connecting bolts.