球形接头共有五种形式,其中一种如图1所示。其他四种仅接头的相应位置和数量不同,但各类接头形状和尺寸基本相同。此类零件形状复杂,而且要求锻件的外球面不再加工。这类锻件上各个接头的方向各不一样,有的接头还不在同一平面上,给锻件的分模、成形和脱模带来很大的困难。 There are five types of ball joints, one of which is shown in Figure 1. The other four only the corresponding position and the number of different joints, but all kinds of joints are basically the same shape and size. Such parts are complex in shape and require that the outer spherical surface of the forgings is no longer machined. The direction of each joint on the forgings is different, and some joints are not on the same plane, which brings great difficulties to the parting, forming and demoulding of forgings.