一、前言世界上的一些发达国家都在从事摆动辗压的研究和生产。摆动辗压的工作原理如图1所示。摆头的中心线与摆辗机机身的垂直轴线相对倾斜γ角。摆头的锥顶为支承点,摆头轴沿着既定的运动轨迹(一般为圆形)进行运动,而相应的下模上的坯料则同时上升,达到上死点后再返回。摆动辗压变形力小,设备投资少,公称压力是传统锻压设备的1/5～1/20。这是由于摆动辗压时只限于局部区域连续成形,摆头与坯料之间不产生滑动摩擦,由负载所引起的滚动摩擦极低。坯料受滚动摩擦的作用金属易进行径向流动,坯料中心和边缘处的应力均为σ_r(参见图1),最大应力σ_(max)位于距坯料中心 I. Preface Some developed countries in the world are engaged in swinging research and production. Swing rolling working principle shown in Figure 1. Swinging the center line and the tilt axis of the fuselage relative tilt γ angle. The top of the swinging head is the supporting point. The swinging head shaft moves along a predetermined movement track (usually a circle), while the blank on the corresponding lower mold rises at the same time and reaches the top dead center before returning. Swing rolling deformation force is small, less equipment investment, the nominal pressure of traditional forging equipment 1/5 ~ 1/20. This is because the swinging rolling is limited to the continuous forming of the local area, the sliding friction between the swinging head and the blank is not generated, and the rolling friction caused by the load is extremely low. Billet by the role of rolling friction metal radial flow easily, the center of the billet and the edge of the stress are σ_r (see Figure 1), the maximum stress σ_ (max) from the blank center