Based on the finite element mechanical analysis of single parts such as slide block, lower table, left and right column, the optimal size parameters of each part and the thickness of the frame are determined according to the stress and displacement curves of the single part thickness change and the change curves of the whole machine after the combination of the thickness changes of each part.
In order to obtain a higher rigidity of the frame, ensure the overall stability of the frame and the full length of the machining accuracy within 0.5°.