黄智,董华章,周振武,吴湘,赵燎.砂带磨削TC4磨削力数字建模及其预测[J].表面技术,2018,47(9):250-258.
HUANG Zhi,DONG Hua-zhang,ZHOU Zhen-wu,WU Xiang,ZHAO Liao.Modeling and Prediction of Grinding Force on Belt Grinding TC4[J].Surface Technology,2018,47(9):250-258 |
| 砂带磨削TC4磨削力数字建模及其预测 |
| Modeling and Prediction of Grinding Force on Belt Grinding TC4 |
| 投稿时间：2018-02-15 修订日期：2018-09-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2018.09.033 |
| 中文关键词: TC4 砂带磨削 磨削力 磨削温度 数值仿真 FEM |
| 英文关键词:TC4 belt grinding grinding force grinding temperature numerical simulation FEM |
| 基金项目:国家自然科学基金资助（51275078） |
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| Author | Institution |
| HUANG Zhi | University of Electronic Science and Technology of China, Chengdu 611731, China |
| DONG Hua-zhang | University of Electronic Science and Technology of China, Chengdu 611731, China |
| ZHOU Zhen-wu | University of Electronic Science and Technology of China, Chengdu 611731, China |
| WU Xiang | University of Electronic Science and Technology of China, Chengdu 611731, China |
| ZHAO Liao | University of Electronic Science and Technology of China, Chengdu 611731, China |
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| 中文摘要: |
| 目的 探索TC4砂带磨削的机理，优化表面加工质量。方法 基于磨粒有序分布和等高性一致的假设，构建出单位面积磨粒的砂带几何模型，并建立了相应磨削的数值仿真模型，开展了模拟与实测接触轮在磨削过程中的弹性变形分析，建立了与印痕密切相关的砂带磨削力的预测模型，根据TC4的Johnson-Cook本构模型以及Johnson-Cook Sheiar Damage失效准则，模拟磨削区的热力特性。结果 切向磨削力随着磨削深度的增加而增加，随砂带线速度的增加而逐渐减小，且切向磨削力随深度的变化趋势大于随砂带线速度的变化趋势。磨削温度随磨削深度和砂带线速度的增加而增加，且磨削温度随砂带线速度的变化趋势大于随深度的变化趋势。预测磨削力与实际实验值的误差在9%以内，通过对实验数据分析得到实验条件下的最优加工参数：砂带线速度5 m/s，进给速度1 m/min，磨削深度5 mm。对陶瓷砂带磨削TC4进行了验证实验，预测值与实验值具有一致性。结论 该方法建立的砂带磨削仿真模型和预测模型，可以较准确地预测砂带磨削TC4时的磨削力和磨削温度，为提高砂带磨削航发叶片表面质量的加工参数选择提供参考和指导。 |
| 英文摘要: |
| The work aims to explore the mechanism of TC4 abrasive belt grinding and optimize the quality of surface processing. The geometric model of the abrasive belt per unit area was built based on the assumption of the ordered distribution of abrasive particles and the consistency of the equal height, and a numerical simulation model for the corresponding grinding was established, accordingly. The elastic deformation analysis of contact wheel in grinding process was carried out, and the prediction model of belt grinding force closely related to the indentation was established. According to the TC4’s Johnson-Cook constitutive model and Johnson-Cook shear damage failure criterion, the thermal and force characteristics of the grinding area were simulated. The tangential grinding force increased when the grinding depth increased, and decreased with the increase of belt line speed, while the trend of the change with the depth was greater than that along the belt line speed. The grinding temperature increased when the grinding depth and belt speed increased and the trend of the change along with the belt speed was greater than that along with the depth. The error between the predicted grinding force and the actual experimental value was less than 9%. By analyzing the experiment data, the optimal processing parameters under the experimental conditions were obtained: the abrasive belt line speed of 5 m/s, the feed speed of 1 m/min, and the grinding depth of 5 mm. TC4 of ceramic belt grinding was verified to obtain the consistency between the predicted value and the experimental value. The simulation model and prediction model of belt grinding established by such method can nearly predict the grinding force and grinding temperature of belt grinding at TC4 and provide references and guidance for the selection of processing parameters to improve the surface quality of belt grinding. |
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