5119 ショットピーニングを施した歯車へのラッピングの適用とその効果(S63-3 強度(1),S63 伝動装置の基礎と応用)

概要

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The gear-lapping process with a MC-nylon gear and abrasives was developed by the authors. We applied the lapping process to carburized gears applied a fine particle shot-peening for decreasing the tooth flanks roughness and improving the surface durability. The surface durability of carburized gears was studied in order to clarify effects of the lapping process. The results showed that the tooth flanks roughness of about 4μm Rz for the shot-peened gear becomes to about 1μm Rz through the lapping. Although the most thin surface layer is removed by the lapping, the hardness and compressive residual stress at tooth flank obtained by the shot-peening are kept during the lapping, respectively. The surface durability of shot-peened gears finished with the lapping is improved. Its endurance limit is 2,200MPa (the maximum Hertzian pressure) and is 10% higher than that of shot-peened gears.
社団法人日本機械学会の論文
2006-09-15