A new model for calculating the maximum blow force of a die-forging hammer

The blow of a die-forging hammer is analysed theoretically taking account of the elastic deformation of the cushion under the anvil block, and a new equation for calculating the maximum blow force is deduced from a new model proposed in the paper. The results calculated by the use of the equation agree well with experimental data. Thus, the equation and the results provide a basis for the proper design and use of die-forging hammers.