<p>In this paper, the plastic deformation of aluminum alloy in the process of power spinning is taken as the research object, and the multi-body dynamic finite element model is established and solved based on the dynamic contact relationship between the roller, workpiece, mandrel and the constitutive relationship of the material, the experimental verification is carried out. The hardness test, friction and wear test and surface roughness test of conical spinning parts were carried out to explore the changes of mechanical properties of conical spinning parts. The microstructure evolution of spinning parts was studied by electron backscatter diffraction (EBSD). The dynamic deformation characteristics and mechanical properties of the workpiece were studied by combining the mechanical property test results and finite element numerical calculation results, which provided a reference for shear spinning of conical parts. The results show that: the optimal processing window is 0.3 ~ 0.4&#xa0;mm/r, in this process window can obtain stronger mechanical properties while ensuring the forming accuracy and surface finish of the workpiece, and improve the spinning processing efficiency to a certain extent. In the microscopic test results, there are many grains moving inside the spinning parts {111}-&lt;110&gt;. There are smaller recrystallized equiaxed grains at the grain boundary, and the grains are obviously elongated axially under the effect of feed force. The larger the feed ratio, the greater the axial elongation of the grains. At this time, the content of Σ3 grain boundary gradually decreases and Σ5 grain boundary gradually increases, which explains the reason for the decline of wear resistance. The minimum value of KAM (kernel average misorientation) is obtained at 0.3&#xa0;mm/r, and the peak value of orientation difference appears near 5° and 45</p> Graphical Abstract <p></p>