Abstract: Op-bending straightening theory of pressing point kind is studied by using the nonlinear finite element method and elastic - plastic theory. Method of determining the high - precise stroke of pressing down in pressing point kind is presented. The examples show that the method is useful. The method can be used to analyse and compute some parameters of shaftkind in the exact straightening press.

Key words: Elastic–plastic, Nonlinear, Straightening of pressing point, Stroke of pressing down