The focus of this contribution is basically on small sized crown gears with a casehardened pinion meshing with a normalized steel- or a POM-crown gear. Based on theoretical studies, a local method for the calculation of the load distribution, concerning tooth flank- and tooth root-stresses, is developed. Experimental investigations on straight crown gear sets without offset show distinctive wear; it can be demonstrated that this behavior can be attributed to a too low lubrication. The better dry-running properties of plastic leads to better wear behavior of the POM/steel in comparison to the steel/steel gears. Based on the theoretical and experimental investigations a method for calculating the tooth flank-, tooth root-stresses and the wear behavior according to ISO/DIN and VDI is investigated.
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The focus of this contribution is basically on small sized crown gears with a casehardened pinion meshing with a normalized steel- or a POM-crown gear. Based on theoretical studies, a local method for the calculation of the load distribution, concerning tooth flank- and tooth root-stresses, is developed. Experimental investigations on straight crown gear sets without offset show distinctive wear; it can be demonstrated that this behavior can be attributed to a too low lubrication. The better dr...
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