The results show that, with an increasing internal pressure, non-circularity of the tube decreases, and the tendency of thickness thinning on inner and out side of the tube increases.
结果表明，随着充液压力的增大，截面不圆度逐渐减小，管材内侧壁厚增厚趋势减小，外侧减薄趋势增大。
2
The parts with noncircularity curve have very complex shape. The traditional machining method has bad flexibility, and it can't respond the variety of the electromechanical components updated.