再生振动和刀具偏心对立铣加工精度综合影响的研究  

Research on Influences of Regenerative Vibration and Cutter Eccentricity on Machining Accuracy in End Milling

作　　者：陈勇[1] 刘雄伟[2] 俞铁岳[2] 骆灿彬[2] 

机构地区：[1]华侨大学机电及自动化学院 [2]华侨大学

出　　处：《工具技术》2006年第5期28-31,共4页Tool Engineering

基　　金：福建省自然科学基金资助项目(项目编号:A0540003);国务院侨办科研基金资助项目(项目编号:04QZR05)

摘　　要：基于再生振动和刀具偏心对立铣加工过程的影响,建立了改进的动态切削力和切削厚度的非线性数学模型;利用计算机仿真技术,定量分析了上述因素对铣削加工振动和工件三维表面形貌的综合影响。结果表明:考虑再生振动和刀具偏心的综合影响,可使铣削振动的预测精度较未考虑这两个因素时平均提高20%以上,使加工振动状态更接近实际加工情况。Non-linear mathematical models of dynamic cutting force and cutting thickness are improvod by considering influences of regenerative vibration theory and cutter eccentricity. By applying computer simulation technology, influences of above factom on milling vibration and 3D surface topography of workpiece are analyzed quantificationally. The results demonstrate that the prediction accuracy of milling vibration based on regenerative vibration and cutter eccentricity is higher about 20% than that the two factors are missed. As a result, the state of milling vibration will be close to that in actual process.

关 键 词：立铣加工 再生振动 刀具偏心 铣削振动 表面形貌 

分 类 号：TG54[金属学及工艺—金属切削加工及机床] TS642[轻工技术与工程]