薄壁零件端铣建模与试验研究  

Modeling and Experimental Study of End Milling of Thin-walled Parts

作　　者：乔帆 任斐 刘晓 周金强 Qiao Fan;Ren Fei;Liu Xiao

机构地区：[1]上海航天设备制造总厂有限公司

出　　处：《机械制造》2019年第8期80-83,共4页Machinery

摘　　要：航空航天领域大量使用以薄板类零件和壳类零件为主的薄壁零件,此类零件加工装夹难度大,往往存在弱刚性支撑区域,导致传统切削力模型难以对零件所受端铣铣削力进行精确描述.针对薄板类零件Z向非可靠装夹的情况,在经典铣削力模型的基础上,综合考虑铣削过程中由刀具弱刚性引起的X向、Y向再生型切削厚度波动与零件Z向振动导致的切削深度波动对实际铣削力的影响,建立刀具零件铣削系统三自由度动力学模型,同时开展端铣铣削力试验.试验结果表明,铣削系统三自由度动力学模型计算结果与试验结果吻合度较高,可以较好地描述薄壁零件在弱刚性装夹下的铣削状态.In the aerospace industry,thin-walled parts mainly composed of thin-sheet parts and shell=type parts are used.Such parts are difficult to be processed and clamped,and there tend to be weak rigid support areas,which makes it difficult for traditional cutting force model to make an accurate description on end milling force received by the parts.In view of the unreliable clamping of thin-sheet parts in Z-direction,on the basis of the classical milling force model,and in comprehensive consideration of impact of the X-direction&Y-direction regeneration type cutting thickness fluctuation caused by the weak rigidity of the cutting tool and of the cutting depth fluctuation caused by the Z-direction vibration of the part to practical milling force in the milling process,the 3 DOF dynamic model of the milling system of cutting tool and parts was established and in the meantime,the end milling force test was carried out.The experimental results show that the calculation results of 3 DOF dynamics model of the milling system are in good agreement with the experimental results,which can give a better description on the milling state of thin-walled parts under weak rigid clamping.

关 键 词：薄壁零件 铣削 模型 试验 

分 类 号：TH162A[机械工程—机械制造及自动化]