This paper presents the results of a study performed to measurethe change in residual stress that results from the finish grindingof carburized gears. Residual stresses were measured in five gearsusing the x-ray diffraction equipment in the Large SpecimenResidual Stress Facility at Oak Ridge National Laboratory. Two ofthe gears were hobbed, carburized, quenched and tempered, but notfinished. The remaining three gears were processed similarly, butwere finish ground. The residual stresses were measured at 64different locations on a tooth from each gear. Residual stresseswere also measured at fewer points on other teeth to determine thetooth-to-tooth variation. Tooth profile measurements were made ofthe finished and unfinished gear samples. The results show a fairlyuniform and constant compressive residual field in the nonfinishedgears. There was a significant reduction in the average residualstress measured in the finished gears. Additionally, there was asignificant increase in the variability of the residual stress thatwas introduced by the grinding process. Analysis of the datasuggests a linear relationship between the change in averageresidual stress and the amount of material removed by the grindingprocess.
- Edition:
- 07
- Published:
- 10/01/2007
- Number of Pages:
- 16
- File Size:
- 1 file , 630 KB
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