This article applies APDL parametric modeling to the construction of the finite element model
of the beam of a certain type of water-cutting machine tools, makes a static analysis to
compute the distribution of the stress and displacement as well as the maximum deformation
and the maximum stress in each direction. In addition, based on structural parameters
modification, it attempts to ensure the strength, rigidity and stability of the machine tool
and reduce its weight so as to realize the lightweight design.