A method for analyzing the inclination deviation of McPherson suspension kingpin

The invention discloses an analysis method of the inclination angle deviation of a McPherson type suspension kingpin. The method comprises: A first closed loop dimensioning chain comprising a rocker arm constituent ring is constructed in the front suspension principal plane, A loop comprise a rocker arm is construct, A main pin comprise a ring and a second closed-loop dimensional chain comprise three rings parallel to three coordinate axes of a vehicle coordinate system, By setting independent variable, dependent variable and invariant, the angle deviation of intermediate variable rocker arm is eliminated by the direct linear method of dimension chain deviation analysis, and the kingpin angle deviation expressed by independent variable deviation is obtained. The independent variable deviation of the first closed-loop dimension chain, which has great influence on the kingpin angle deviation, is taken as the key function size to control. The invention analyzes the three-dimensional deviation by the two-dimensio