戴士杰 肖洋 贾瑞 赵玉峰 母嘉恒

摘要 风电叶片的表面处理是其制造过程中的重要步骤。磨削力是影响表面质量、打磨效率和磨削温度的主要因素，目前普通砂轮磨削力在理论和实验上都得到很大的发展。针对基于风电叶片表面处理的杯型砂轮磨削理论模型研究，利用未变形临界磨削深度分析材料的去除方式，提出了一种杯型砂轮高速精磨的磨削机理。通过运动学分析提出了打磨的未变形接触长度，并根据实验测得有效磨粒数推导瞬时打磨深度，利用正态函数得到的活动磨粒数建立了揭示磨削力与输入变量之间关系的磨削力模型。实验结果有力地证明了磨削力模型的正确性。表明了理论力模型可以用于估计磨削力，提高表面质量和打磨效率，对工程实践选择合理的打磨参数具有指导意义。

关 键 词 杯型砂轮；风电叶片；磨削参数；磨削机理；力模型

中图分类号 TG580.11     文献标志码 A

文章编号：1007-2373（2023）03-0029-07

DOI：10.14081/j.cnki.hgdxb.2023.03.003

Research on grinding force model of cup grinding wheel

plane grinding

DAI Shijie1，2， XIAO Yang1，2， JIA Rui1，2， ZHAO Yufeng1，2， MU Jiaheng1，2

（1. The State Key Laboratory of Reliability and Intelligence of Electrical Equipment Kointly Built by the Province and the Ministry， Hebei University of Technology， Tianjin 300401， China; 2. School of Mechanical Engineering， Hebei University of Technology， Tianjin 300401， China）

Abstract The surface treatment of wind turbine blade is an important step in its manufacturing process. Grinding force is the main factor that determines the surface quality， grinding efficiency and grinding temperature. At present， grinding force of ordinary grinding wheel has been greatly developed both in theory and experiment. Aiming at the theoretical model of cup wheel grinding based on the surface treatment of wind turbine blades， a high-speed grinding mechanism of cup wheel is proposed by analyzing the material removal mode using the undeformed critical grinding depth. Based on the kinematic analysis， the undeformed contact length of grinding is proposed， and the instantaneous grinding depth is deduced according to the effective abrasive number measured by experiment. The grinding force model is established to reveal the relationship between grinding force and input variables by using the active abrasive number obtained by normal function. The experimental results strongly prove the correctness of the grinding force model. It shows that the theoretical force model can be used to estimate grinding force， improve surface quality and grinding efficiency， and has guiding significance for selecting reasonable grinding parameters in engineering practice.

Key words cup wheel; wind turbine blade; grinding parameters; grinding mechanism; force model

0 引言

磨削力是研究磨削過程的最关键参数之一，磨削力几乎与所有的磨削现象有关，包括磨削热、表面粗糙度、砂轮磨损、磨削效率等。关于磨削力预测模型的研究，国内外很多研究学者已经进行了各式各样的研究[1-4]。目前针对平形砂轮的磨削力预测模型研究已经十分成熟，许多研究学者利用不同的研究方法建立的磨削力模型都能够很精确地预测平形砂轮不同工作状态进行磨削时的磨削力数值[5]。关于磨削力模型的研究过程，普遍利用的研究方法是Werner等建立的磨削力模型，该磨削力模型考虑了磨削力与磨削过程动态参数的关系。……