Vehicle wheel balancing machine

摘要

A balancing machine for motor vehicle wheels of different sizes and types has a clamp for clamping wheels on a main shaft of the machine. To measure an unbalance related to one or more compensating planes of the wheel, the machine determines the spacing of the compensating plane (or planes) relative to the machine and ascertains the compensating radius on the wheel. To perform this function, the machine has a sensing member which can be extended in a common plane with the longitudinal center line of the main shaft and which supplies electrical signals to an evaluation device in which unbalance measurement values which are ascertained during one or more measuring runs are evaluated to determine the unbalance of the wheel. The sensing member also has an angle measuring device that measures an angular position of the sensing member (or a part of the sensing member) which is proportional to the compensating radius to be detected.