Thermo-mechanical Coupling Simulation Analysis of Cycloid Gear Multi-tooth Form Grinding

Shi Enbing; Su Jianxin; Zhang Lifang; Deng Xiaozhong; Ren Xiaozhong; Cheng Chen

doi:10.16578/j.issn.1004.2539.2020.04.016

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Thermo-mechanical Coupling Simulation Analysis of Cycloid Gear Multi-tooth Form Grinding

Test·Analysis | 更新时间：2022-10-20

- Thermo-mechanical Coupling Simulation Analysis of Cycloid Gear Multi-tooth Form Grinding
- Journal of Mechanical Transmission Vol. 44, Issue 4, Pages: 101-106(2020)
- 作者机构：
  
  1.河南科技大学机电工程学院，河南洛阳 471003
  2.机械装备先进制造河南省协同创新中心，河南洛阳 471003
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2020.04.016
  CLC：
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师恩冰,苏建新,张丽芳等.摆线轮多齿成形磨削热力耦合仿真分析[J].机械传动,2020,44(04):101-106.

Shi Enbing,Su Jianxin,Zhang Lifang,et al.Thermo-mechanical Coupling Simulation Analysis of Cycloid Gear Multi-tooth Form Grinding[J].Journal of Mechanical Transmission,2020,44(04):101-106.
师恩冰,苏建新,张丽芳等.摆线轮多齿成形磨削热力耦合仿真分析[J].机械传动,2020,44(04):101-106. DOI： 10.16578/j.issn.1004.2539.2020.04.016.

Shi Enbing,Su Jianxin,Zhang Lifang,et al.Thermo-mechanical Coupling Simulation Analysis of Cycloid Gear Multi-tooth Form Grinding[J].Journal of Mechanical Transmission,2020,44(04):101-106. DOI： 10.16578/j.issn.1004.2539.2020.04.016.

摘要

摆线轮多齿成形磨削为齿轮精加工工艺，一次可完成3个齿槽的加工。在高速磨削过程中，齿轮表面会产生瞬间高温，高温可能会造成齿面烧伤，磨削温度场产生的温度梯度会使齿面形成残余应力，使摆线轮齿面金相组织出现变化，影响齿轮的磨削加工精度。通过有限元法模拟摆线轮多齿成形磨削温度场，再采用热力耦合分析方法，得到摆线轮成形磨削温度场和热应力的数值仿真云图，通过对磨削区主应力分析可知，应力主要集中在磨削中心靠齿根部，磨削区呈现热压应力，在已磨削区域，热压应力转变为热拉应力，并逐渐形成残余拉应力，且随着磨削工艺参数变化，节点应力也发生相应变化。研究结论对预测多齿成形磨削温度场和热应力场分布情况和合理选择磨齿工艺参数有一定的研究意义。

Abstract

The cycloid gear multi-tooth form grinding is a gear finishing process，which can finish the processing of three tooth grooves at same time.In the process of high-speed grinding，high temperature will arise on the gear surface instantaneously，which may cause tooth surface burn.The temperature gradient formed by grinding temperature field will cause residual stress on the tooth surface，and the metallographic structure of cycloid gear tooth surface will change，affecting the grinding accuracy of the gear.The finite element method is used to simulate the temperature field of cycloid gear multi-tooth form grinding，and then the thermo-mechanical coupling analysis method is used to obtain the numerical simulation nephogram of the temperature field and thermal stress of cycloid gear form grinding.Through the analysis of the main stress of the grinding area，it can be seen that the stress is mainly concentrated at the grinding center near the root of the tooth，and the grinding area presents hot-pressing stress.In the ground area，the hot-pressing stress is converted into thermal tensile stress and gradually forms residual tensile stress，and the node stress also changes correspondingly with the change of grinding process parameters.The conclusion has certain research significance for predicting the distribution of temperature and thermal stress field during multi-tooth form grinding and reasonably selecting grinding process parameters.

关键词

摆线轮有限元模型温度场热力耦合分析热应力

Keywords

Cycloid gearFinite element modelTemperature fieldThermo-mechanical coupling analysisThermal stress

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