A simplified method of dynamic balancing for automobile wheel-tire assembly

Mechanical Engineering Department, Institute of Technology, Nirma University, Ahmedabad- 382482, Gujarat, India

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Abstract

The method of balancing the wheel tire assembly, so that it rotates smoothly at high speed is known as wheel balancing. The most common type of equipment is called a dynamic balancer, commonly referred to as a "spin balance" It detects dynamic balance by mounting a tire on a test wheel, rotating the assembly up to 300 rpm or more, and then evaluating the forces of unbalance as the tire rotates. Dynamic balancers identify the exact amount of counterweight which needs to be applied to correct an unbalance as well as to determine its position. The technique of unbalance identification for the vehicle wheel tire assembly is addressed in this study. A specific technique is discussed for calibration of wheel balancer machine and a means of identification is proposed in order to identify the location and magnitude of the unbalance. The robustness of the technique is also validated with a specific case of wheel tire assembly balancing. The vehicle wheel balancer machine producer can easily implement the method discussed in the present investigation to build up the balancer machine.