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砂布轮抛光航空发动机叶片温度仿真与试验研究

2025-08-13鲜超辛红敏代辉程清思

中国机械工程 2025年4期
关键词:工艺参数

关键词:航空发动机叶片;砂布轮;抛光温度;工艺参数;影响规律

中图分类号:TG580.14;V232.4

DOI:10.3969/j.issn.1004-132X.2025.04.017 开放科学(资源服务)标识码(OSID):

Simulation and Experimental Study of Temperature for Polishing Aero-engine Blades with Abrasive Cloth Wheel

XIAN Chao1,3 * XIN Hongmin²,³DAI Hui²CHENG Qingsi²

1.College of Mechanical Engineering,Hubei University of Arts and Science,Xiangyang, Hubei,441053

2.College of Automotive and Traffic Engineering,Hubei University of Arts and Science, Xiangyang,Hubei,441053

3.Key Laboratory of Aero-engine High Performance Manufacturing,Ministry of Industry and Information Technology,Northwestern Polytechnical University,Xi'an, 710072

Abstract: ANSYS software was used to simulate the instantaneous temperature fields in the polishing processes with abrasive cloth wheel using a rectangular heat source loading method. The temperature distribution on the blade surfaces and along the blade thickness direction in the polishing processes was studied,and the influences of processing parameters on the polishing temperature was explored. The results show that as the polishing process progresses,the polishing temperature distribution gradually stabilizes. When the polishing temperature stabilizes,the temperature values of the machined parts of the bladeat different depths tend to be consistent,while the temperature of the machining parts decreases continuously along the depth direction; the polishing temperature gradient graduall decreases from the contact area being machined to the machined area;the polishing temperature increases with the increase of spindle speed,the effects of feed speed on the polishing temperature are not significant and the polishing temperature is positively correlated with the tangential polishing forces;the deviation rates between the measured and the simulated temperature values are not more than 10% ,indicating that the good consistency and high accuracy of the simulation.

Key words: aero-engine blade;abrasive cloth wheel; polishing temperature; processing parame-ter;influence law

0 引言

在磨削和抛光过程中,温度过高引起的表面热损伤会降低零件的耐磨性,增加应力腐蚀的敏感性,降低疲劳抗力,从而降低零件的使用寿命和工作可靠性。磨削温度越高,磨粒越容易从磨具上脱落,降低磨具的加工效果,降低加工质量和精度。因此,研究磨削和抛光时工件的温度分布和工艺参数对磨削温度的影响规律,对磨削和抛光温度的控制具有重要的现实意义。

理论求解抛光温度场计算复杂,对于具有复杂几何形状和非线性特征参数的研究对象,很难获得解析解,甚至无法求解。测量法测量抛光温度成本高,并且只能测量某个区域的温度值,无法反映整体温度分布,但是通过数值模拟可以很快得到整个温度场的分布结果。鉴于上述原因,计算机数值模拟技术在研究抛光过程温度场方面具有很大的优势。

JAEGER[在1942年提出了移动热源模型,他认为,在磨削过程中工件和磨具之间的接触区域是一个矩形热源,它以匀速移动。基于这一假设,可以通过分析方法获得工件温度场分布,从而为磨削温度的理论求解和仿真奠定基础。贝季瑶[2和SNOEY[3认为矩形热源与实际情况有一定偏差,相继提出了三角形热源分布假设。后来,JIN等[4-5]提出了倾斜运动面热源模型和圆弧面热源模型。张磊对比了矩形热源模型、直角三角形热源模型、等腰三角形热源模型、梯形热源模型和矩三角形热源模型,提出了热源分布综合模型。……

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