摘要
为解决齿轮热处理过程中存在畸变、齿根处弯曲应力增加、齿轮的寿命降低等问题,将功能材料技术应用到齿轮工作接触面处(简称功能梯度齿轮)。首先,开展了单质齿轮性能与单质齿轮热处理后性能的对比分析;然后,建立了单质圆柱渐开线齿轮模型与功能梯度材料圆柱渐开线齿轮模型,对其进行了弯曲应力有限元计算,并对其性能进行了对比分析。将未经热处理的单质齿轮作为桥梁,建立了单质齿轮热处理后的性能与功能梯度材料齿轮性能之间的关系。功能梯度材料不仅在轮齿表面硬度与齿根弯曲应力方面比热处理后的齿轮有更好的性能,而且能避免齿轮热处理过程中产生的畸变、渗碳层不均匀等缺陷。分析结果表明:将功能梯度材料应用到齿轮上是可行的。
In order to solve the problems of distortion,the tooth root bending stress increase,the life of the gear reduction and other issues in gear heat treatment process,functionally graded material（FGM）was used on gear working surface.Firstly,the common gear performance and heat treated gear performance comparison analysis was made;then a common cylindrical involute gear model and a functionally graded material cylindrical involute gear model were created,the finite element calculation of bending stress and analysis of the two models were made.Based on the relationship with the no heat treated common gear,the relationship between the performance of heat treated gear and the performance of FGM gear was established.The FGM gear not only has better performance on the hardness of the working surface and the root bending stress,but also can avoid disadvantages about distortion and uniform carburized layer which might happened in heat treatment process.The experimental results show that FGM can be used on gear.
出处
《机电工程》
CAS
2012年第4期381-384,共4页
Journal of Mechanical & Electrical Engineering
关键词
功能梯度材料
齿根弯曲应力
圆柱直齿齿轮
有限元计算
functionally graded material（FGM）
tooth root bending stress
spur gear
finite element analysis
