Improving bending stress in spur gears using asymmetric gears and shape optimization

Optimization of asymmetric spur gear drives to improve the bending load capacity

Influence of profile shift on the spur gear pair optimization

Geometric design of involute spur gear drives with symmetric and asymmetric teeth using the Realized Potential Method

Investigation of load carrying capacity of asymmetric high contact ratio spur gear based on load sharing using direct gear design approach

Two procedures to optimize a given asymmetric gear drive have been developed through direct gear design method. Considering several sets of the addendum pressure angles of pinion and gear for a required contact ratio, first the nonstandard rack cutters and subsequently the asymmetric tooth profiles of pinion and gear are generated for each set. FEM analysis has been carried out to determine maximum fillet stress in pinion and gear at each set. The set of profiles that develops an equal and possible lowest minimum of the maximum fillet stress at its respective fillet is considered as the optimum one for a maximum load carrying capacity. In this connection, the influence of speed ratio, asymmetric factor, number of teeth, and center distance on the maximum fillet stress is also studied.

Optimization of asymmetric spur gear drives for maximum bending strength using direct gear design method

An optimum design for an internal gear pair for the desired values of input parameters has been attempted through a direct gear design approach using area of existence, which is enclosed between the isograms of a desired contact ratio, a definite pitch point contact, an interference free drive and a fouling free condition. By synthesizing several sets of asymmetric pinion cutters for specific values of input parameters, the respective gear and pinion generated by them have been analyzed for a balanced and lowest possible maximum fillet stress to decide the optimum one. A conventional gear design process has also been suggested with stub tooth concept in this regard.

D. V. Muni

Papers

Optimization of asymmetric spur gear drives to improve the bending load capacity

Optimization of asymmetric spur gear drives for maximum bending strength using direct gear design method

A Comprehensive Study on the Asymmetric Internal Spur Gear Drives through Direct and Conventional Gear Design