从结构上可知,十字轴万向节主、被动叉头(指十字轴头中心点)的运动轨迹均是一圆。当这种万向节有传动夹角存在时,两个轨迹圆则分别在不同的空间平面上。现设一个十字轴万向节的主动叉头在纸平面上运动,被动叉头在纸平面绕Z轴线顺时针方向转动一角度α时的平面上运动(即这十字轴万向节存在传动夹角α),其主、被动叉头的运动轨迹圆所在的空间位置如图1所示。 From the structure, we can see that the cross-axis universal joints, passive fork (refers to the cross-axis head center) trajectory is a round. When there is a driving angle of this kind of universal joint, the two track circles are in different space planes respectively. A crosshairsk universal joint active prongs are set to move on the plane of the paper. The passive prongs move on the plane when the plane of the paper is rotated by an angle α clockwise around the Z axis (ie, there is a transmission clip Angle α), the main, passive fork head trajectory of the space where the position shown in Figure 1.