Geometrically Modified Involute Spur Gear

The gears evolution from wood to metal has seen thousands of different applications from heavy artillery catapults to precise gearbox of racing cars. In each era of inventions and developments gear design also experienced so many design modifications to make it the most precise and reliable transmission system any mechanical industry ever had. In this book a gearbox of lathe machine is taken for study. The gears of the lathe machine are considered for the study to typically modify the present gear design to extract better improved results from the same gearbox. The gear design modifications such as inclusion of stress relieving features and mass reducing features are carried out using finite element analysis for improving the bending stresses, contact stresses as well as reducing the mass of the gears while keenly observing their effect on development of stresses in the gearing system. The analytical as well as finite element analysis results for bending stresses, contact stresses and mass reduction of the geometrically modified gear and present gear is presented with the comparative analysis among them. An active graphical interface based on Visual Basic is also developed.