Surface durability of shot-peened carburized gears with MC-nylon gear lapping

MC-尼龙齿轮研磨喷丸渗碳齿轮的表面耐久性

• 批准号: 19760106
• 负责人: MORIKAWA Hiroshi
• 金额: $ 2.34万
• 依托单位: Sasebo National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19760106/
• 关键词: 機械要素; 浸炭歯車; ラッピング; 負荷能力; MCナイロン; 歯面粗さ; 硬さ; 残留応力; ショットピーニング

The gear-lapping process with a MC-nylon gear and abrasives for carburized gears was developed by the authors. In order to decrease the tooth flank roughness and improve the surface durability of carburized gears with fine particle shot-peening, the lapping process was applied. The surface durability of carburized gears was studied to clarify effects of the lapping process. The results show that the roughness of the tooth flanks decreased from about 4 μmRz by the shot-peening to about 1 μmRz during the lapping. The thin surface layer was removed during the lapping, but the hardness and compressive residual stress at tooth flank obtained by the shot-peening were kept, respectively. The surface durability of shot-peened gears finished with the lapping was improved. Its endurance limit was the maximum Hertzian pressure 2,200MPa and was 10% higher than that of shot-peened gears.

本文介绍了MC尼龙齿轮和渗碳齿轮磨料的研齿工艺。为了降低渗碳齿轮齿面粗糙度，提高齿轮表面的耐磨性，采用了精研工艺。研究了渗碳齿轮的表面耐久性，以阐明研磨工艺的影响。结果表明，经喷丸处理后，齿面粗糙度从4 μmRz左右降低到1 μmRz左右。在研磨过程中，薄的表面层被去除，但通过喷丸处理获得的齿侧硬度和压缩残余应力分别被保留。经研磨处理后的喷丸齿轮表面耐久性得到提高。其疲劳极限为最大赫兹压力2, 200 MPa，比喷丸齿轮高10%。

项目成果

Application and effect of the gear-lapping for shot-peened carburized gears

喷丸渗碳齿轮精磨的应用及效果

• 发表时间: 2009
• 作者: Hiroshi Morikawa;Masahiko Nakae
• 通讯作者: Masahiko Nakae