摘要
为了分析高速铣削过程中摆线轮结构件的铣削力的变化规律,基于复杂的摆线轮轮廓,建立了高速铣削过程中该轮廓的铣削力有限元模型。该模型针对摆线轮齿廓加工的工艺特点:即硬度高、壁薄和轮廓复杂等,借助有限元软件DEFORM-3D,将高速铣削过程中的摆线轮齿廓分为3段,根据每一段的几何形状不同,结合材料性能、本构关系以及剪切断裂分离理论,建立不同切削方式的切削力仿真模型并进行仿真,仿真结果表明:摆线齿廓的铣削力呈现出周期性的变化规律,并且铣削合力随铣削速度的增加而减小,工件受到的径向力随进给量的增大而显著增大,切向铣削力受进给量的影响较小。该铣削力模型经试验验证,试验结果与仿真结果具有较好的一致性。
To analyze the problem of milling force for a component with cycloid gear prohle dunng high speed milling process, a finite element model for determining the milling model is based on identifying key processing characteristics that force, is built with the software DEFORM-3D. The influence the milling force of workpiece with cycloid profile, such as hard material, thin-wall and component with complex profile. Based on the analysis of the three profile curves of workpiece, a simulating model suitable for milling force in the machining process is proposed by taking into account the changes of the profile curves, material characteristics, eonstitutive relation for materials and shear break separating theory. When machining along the workpiece length the simulating results show that the mill- ing force changes periodically and has a decreasing trend with the increase of the milling speed. With the increase of the total force, the component force along the radial direction has a obviously increasing trend and the component force along the tangential direction does not change. Finally, the finite element force model has been experimentally validated and the results show good agreement between predicted and measured force values.
出处
《机械科学与技术》
CSCD
北大核心
2010年第1期17-23,共7页
Mechanical Science and Technology for Aerospace Engineering
基金
天津市高校发展基金项目(20051002)资助
关键词
铣削力仿真
摆线轮廓
有限元方法
高速铣削
milling forces simulation
profile with cycloid gear
finite element method
high speed milling
