曲面磨削表面微观形貌建模方法研究  

Modeling Method of Surface Micro-topography of Curved Surface Grinding

作　　者：胡宁 陈海锋 HU Ning;CHEN Haifeng(Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material,Intelligent Manufacturing Institute.Hunan University of Science and Technology,Xiangtan 411201)

机构地区：[1]湖南科技大学智能制造研究院难加工材料高效精密加工湖南省重点实验室,湘潭411201

出　　处：《宇航材料工艺》2023年第4期17-25,共9页Aerospace Materials & Technology

基　　金：国家自然科学基金项目(51605160);湖南省自然科学基金项目(2020JJ5169)。

摘　　要：针对现有磨削表面微观形貌建模方法仅对某一类特定零件有效,提出了一种适用于空间曲面零件加工的磨削形貌建模方法。基于曲面磨削加工原理,建立砂轮坐标系与曲面零件坐标系之间的齐次变换矩阵,获得磨粒的三维运动轨迹方程。通过提出曲面区域逼近求解算法,建立曲面磨削表面微观形貌预测模型。并以展成法磨削齿轮和磨削轴承内套为例,得到两类实验与仿真结果之间的误差最大为11.338%和18.91%,验证了本文提出的预测模型的有效性与科学性。Aiming at the fact that the existing ground surface topography modeling method was only effective for a certain type of parts,a modeling method suitable for the processing of space curved parts was proposed.Based on the grinding process principle,the homogeneous transformation matrix between the grinding wheel and the surface part was established,and the three-dimensional equation of the abrasive particles was obtained.By proposing a surface area approximation solution algorithm,a prediction model was established.Taking gears and bearing inner sleeves as examples,the maximum errors obtained are 11.338%and 18.91%,which has verified the validity and scientificity of the prediction model proposed.

关 键 词：曲面磨削 表面微观形貌 仿真 实验 

分 类 号：TG580[金属学及工艺—金属切削加工及机床]