The bed body is composed of lathe bed, left wall and right wall; two trunnions at sides of Biaxial cradle turntable are set on both machine side walls, which can realize machining complex curved surface with multiple coordinates and big stroke. 其床体由床身、左墙和右墙组成,双轴摇篮转台两侧耳轴镶嵌到机床两侧墙体上,可实现多个坐标、大行程的联合运动加工复杂的空间曲面。