在干涉研究的基础上，对无干涉条件下的应力应变分布进行了分析，为后续理解

On the basis of interference research, the stress-strain distribution under non-interference conditions was analyzed, which laid a foundation for the subsequent understanding of the staggered spinning deformation process and wall thickness distribution analysis. Figure 5-12 is a three-dimensional stress-strain cloud diagram in a cylindrical coordinate system. Starting from the tail cover, the radial compressive strain of the blank gradually changes into radial tensile strain, and the radial contact strain has the largest radial tensile stress area before the wheel contact area. This is because with the thinning of the pressure roller, radial compression and axial elongation of the pressure roller occur through this area, so that the area behind the pressure roller assumes a radial compression strain state. In the area of ​​the front wheel, material builds up, so that the blank produced by the squeeze wheel is stacked with the axial material. And the axial superposition effect is more obvious, closer to the local tensile strain area of ​​the wheel, the maximum tensile stress and the top drum state. Corresponding stress changes can also be observed in the axial and circumferential stress-strain clouds.

On the basis of intervention research, the stress strain distribution under non-interference conditions is analyzed, which lays the foundation for the subsequent understanding of the deformation process and wall thickness distribution of the wrong-row spinning. Figure 5-12 is a three-dimensional stress strain cloud map under the bar coordinate system. Starting from the tail cap, the radial compression strain of the blank gradually changes to a radial stretch strain, which has the largest radial pull stress area before the wheel contact area. This is because with the thinning of the pressure wheel, radial compression and axial elongation of the pressure wheel occur through the region, causing the area behind the pressure wheel to appear radially compressed. In the front wheel area, the material accumulates, so that the billet produced by the extrusion wheel is stacked with the axial material. Moreover, the axial overlay effect is more obvious, closer to the local stretch strain zone, maximum pull stress and top drum state of the wheel. Corresponding stress changes can also be observed in axial and peripheral stress strain clouds.

On the basis of the interference study, the stress-strain distribution under the condition of non-interference is analyzed, which lays a foundation for the subsequent understanding of the deformation process and the wall thickness distribution of the staggered spinning. Fig. 5-12 is a three-dimensional stress-strain cloud diagram in the cylindrical coordinate system. From the tail cover, the radial compressive strain of the blank gradually changes to the radial tensile strain, and the radial contact strain has the largest radial tensile stress area before the wheel contact area. This is because with the reduction of the roller, the radial compression and axial extension of the roller occur through this region, which makes the region behind the roller present a radial compression strain state. In the front wheel area, the material is stacked so that the blank produced by the extrusion wheel is stacked with the axial material. Moreover, the axial superposition effect is more obvious, which is closer to the local tensile strain area, the maximum tensile stress and the crown drum state of the wheel. Corresponding stress changes can also be observed in the axial and circumferential stress-strain clouds.<br>