Microscopic morphology modeling and prediction of flexible polished surface with belt flapwheel

砂布页轮柔性抛光表面微观形貌建模与预测

¹ School of Mechanical Engineering, Xi’an Aeronautical University, Xi’an 710077, China
² School of Intelligent Manufacturing and Control Technology, Xi’an Mingde Institute of Technology, Xi’an 710124, China
³ School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China

Received: 15 January 2023

Abstract

Flexible polishing technology is widely used in the precision machining of aero-engine blisk blades. It has become one of the important research contents of flexible polishing technology to systematically study the flexible polishing process and understand the connotation of the microscopic morphology of the polished surface. In this paper, the flapwheel is used as a flexible abrasive tool, and the spatial kinematics model for the abrasive grains on the surface of the flapwheel and the geometric interference model for the abrasive grains and workpiece are established by transforming the spatial geometric coordinates. Based on the surface topography model for the abrasive tool, MATLAB software was used to simulate the micro topography generation process of the flexible polishing surface with flapwheel as abrasive tool, and the three-dimensional topography of the workpiece surface and its influence law under different process parameters were obtained. The polishing experimental results verified the simulation algorithm correctness and effectiveness.

摘要

柔性抛光技术广泛应用于航空发动机整体叶盘叶片的精密加工。系统深入研究柔性抛光过程, 了解抛光加工表面微观形貌生成的内涵, 成为柔性抛光加工技术的重要研究内容之一。以砂布页轮为柔性磨具, 通过空间几何坐标变换建立了砂布页轮表面磨粒的空间运动学模型及磨粒-工件几何学干涉模型, 并研究了砂布页轮柔性变形对工件表面磨粒运动轨迹的影响。基于磨具表面形貌模型, 利用MATLAB软件进行砂布页轮柔性抛光表面微观形貌生成过程仿真, 并得到不同工艺参数下工件表面三维形貌及其影响规律, 抛光实验结果验证了该仿真算法的正确性和有效性。