Optimization Of Tire Dynamic Balancing Test System

Tire dynamic balancing test system is a key equipment to detect tire unbalancemass. Tires are irreplaceable car parts that contact with the ground. The drivingperformance of car would be affected when the tire is unbalanced, such as security,stability and comfort. All new tires have to pass strict inspection before leave thefactory to ensure its quality. Tire unbalance mass is an important indicator of judgingthe tire dynamic balance performance and a main parameters of the tire online test.Foreign manufacturers only sell equipment to us, but not the technology. Due tothe technology blockade of dynamic balancing, our tire dynamic balancing testmachine has been in a passive state of high prices and not adapt to China’s actualconditions. Domestic companies have developed dynamic balancing test equipmentthrough years of independent research and development. But it still has some problems,such as low stability, accuracy and imperfect theoretical basis. In this paper, thefollowing researches were carried out in order to solve the problems.(1) Discuss the factors that affect the accuracy and stability of tire dynamicbalancing test system.(2) The existing gas circuit of spindle was improved by establishing the model ofthe spindle component and doing theoretical analysis. The stable of spindle and thedetection accuracy of tire unbalance mass were enhanced.(3) Analyze mechanical characteristics and modal for spindle carrier that providea theoretical basis for optimize the structure of the spindle and design the carrier.(4) In this paper, we optimized the spindle support device, improve the boom andboom support and do finite element analysis with it. The results show that, thefrequency of the optimized boom’s resonant is closer with spindle’s working frequencyon the premise of meeting the requirements of strength and stiffness. The boom’svibration has changed mainly along the direction of sensor. This will be more suitablefor design. The maximum stress of optimized boom support was reduced by25%, andthe maximum deformation was reduced by74%under the same load. It is morestabilized, has stronger bearing capacity and is difficult to be deformed. It makes theassembly process more secure.(5) The theoretical analysis and simulation were made for the force andtechnology according to the current situation of tire dynamic balance tester’s rim. We ensured that the existing rim material7A04and40Cr could be replaced withaluminum alloy ZL107. The material utilization was increased from30%to80%through using casting process. And the production cost was reduced by83%comparedwith7A04. Then the rim parameter was optimized, the quality of the rim was reducedthrough the optimizing of the rim parameters.The existing equipment was optimized and improved combine with basic theoryof tire dynamic balancing and finite element analysis in this paper. It provides theorybasis for further research on tire dynamic balancing test system proceed fromproduction reality and measurement.