Математична модель похибки вимірювання висоти поковки на гідравлічних пресах

Abstract

The influence of the construction and technical parameters on the accuracy of the forging obtained in the free-forging process has been presented in the paper. The accuracy analysis, taking into account the limitations imposed by the manufacturing process, has been carried out. The absolute error of the forging height in the i-th draft has been chosen as the quality criterion. The measurement reference point has been chosen outside the press construction and the co-ordinates of the movable press parts in relation to this point have been determined. The analysis has been carried out for two reference points: in the first case the reference plane has been located in the upper position of the hammer block (making the upper reference level), and in the second case – on the level of the lower anvil (making the zero reference level).