WORM WHEEL ANALYSIS OF WINCH MACHINE GEARBOX USING EXPERIMENTAL & FEA

The Worm & worm wheel in winch machine gearbox is used for lifting sand bucket in the foundry. During its operation of lifting, the worm wheel fails due to load coming on the teeth. This failure occurs due to stress concentration. The crack appears at central thickness of tooth. Hence the tooth breaking starts at the central thickness. The failure of wheel occurs within period of about 20 days. So the foundry has to replace the worm wheel which is not cost effective. The calculation of stresses of worm wheel at tooth thickness is a three dimensional problem as the thickness of wheel is considerable. This paper represents the analysis of stresses of wheel using theoretical, experimental and FEA. In this work, the experimentally obtained results are verified with the finite element analysis (FEA) results. Also proper solution has been provided to the foundry