In the CNC incremental forming, the forming quality will be different with the different extrusion direction. The effects of the different extrusion directions on the forming quality in the CNC incremental forming with the multidirectional adjustment of sheet postures were studied by using three extrusion directions: parallel to the Z-axis, perpendicular to sheet surface and perpendicular to the surface to be formed. The algorithm for calculating the inclination angle of the extrusion tool and determining the extrusion direction vector in the multidirectional adjustment environment of sheet postures was presented. The feasibility of the algorithm was verified by an application example. The equivalent plastic strains under the three extrusion directions were analyzed through the numerical simulation. At the same time, the contour accuracy, thickness reduction and thickness distribution were compared and analyzed through the CNC incremental forming experiment with the multidirectional adjustment of sheet postures under the three extrusion directions.

在CNC增量成型中，随着挤压方向的不同，成型质量也会有所不同。通过使用三个挤压方向：平行于Z轴，垂直于板材表面和垂直于待成型表面的三个挤压方向，研究了不同挤压方向对CNC增量成形中板料姿势的成形质量的影响。 。提出了一种在板材姿态的多方向调节环境中计算挤压工具倾斜角并确定挤压方向矢量的算法。通过一个应用实例验证了该算法的可行性。通过数值模拟分析了三个挤压方向的等效塑性应变。同时，轮廓精度