Forming the nave during the sinking strain in the spacer

Computer simulation of the process of sinking strain a cylindrical workpiece on a spacer was performed in the Deform 2D / 3D software package. The influence of the degree of deformation, the relative dimensions of the workpiece, the magnitude of external friction, the relative dimensions of the hole in the spacer, the forging angle and the radius of the curve of the edge on the nature of the shape of the nave is established. With an increase in the degree of deformation, an increase in the height of the nave is established according to the law of the exponent. The lower the relative height of the workpiece H0 /D0, the higher the height of the nave. External friction promotes the formation of a higher nave than with the sinking strain of the workpiece in the absence of external friction. With an increase in the relative size of the hole in the washer d0 /D0, a noticeable increase in the height of the nave is observed. At large degrees of deformation, the radius of curvature of the edge of the hole does not affect the shape of the nave. With an increase in the forging angle from 1º to 6º, the height of the nave increases within (12 - 18) %.