Patent ID: 7278215
Filing Date: 2007-10-09
Classification: G01B,Y10T

Abstract:
1. A method of measuring wheel alignment of an automobile carried in suspension through an automobile assembly line, a wheel installation portion yet to be fitted with a wheel being capable of being lifted and lowered while keeping an automobile body in suspension, comprising: a wheel installation portion lifting step of lifting the wheel installation portion to a predetermined vertical position; a measuring step of measuring a position of the wheel installation portion and an inclination angle of the wheel installation portion in a predetermined direction during lift in the wheel installation portion lifting step; and an inclination angle calculating step of calculating the inclination angle of the wheel installation portion in the predetermined direction in a finished vehicle state of the automobile from the measurement value obtained in the measurement step, wherein said measurement step further comprises: a deviation angle detecting step of detecting the deviation angle, in a predetermined direction, of the attitude of the automobile body supported in suspension with respect to a predetermined proper attitude of the automobile body at a measurement position; and a measurement value correcting step of correcting the measurement value of the inclination angle of the wheel installation portion in the predetermined direction based on the deviation angle detected in the deviation angle detecting step, and in said inclination angle calculating step, the inclination angle of the wheel installation portion in the predetermined direction in the finished vehicle state of the automobile is calculated using the inclination angle of the wheel installation portion in the predetermined direction corrected in the measurement value correcting step as said measurement value.