摘要
精确合理的铣削过程模型是研究铣削加工表面形貌的关键。首先根据线性弹性体基本假设， 将铣削过程中刀杆所受的力和产生的变形均分解为动、静两部分；然后运用微分几何理论，考虑实际切削过程中的再生效应，导出动态铣削力集度表达式， 进而建立刀杆的动态变形模型， 并构造出一套与之相应的高效快速数值仿真算法， 同时还给出刀杆静态变形量的计算方法；
Precisely and reasonably modeling for milling process is the key to study milled surface topography. First of all, according to the basic hypothesis of linear elasticity, the force acting on the cutter and its deflection in milling process are both divided into two parts: the static and dynamic. Then, applying differential geometry theory, by considering the regenerative feedback in practical milling process, the dynamic milling force acting on the unit length of cutter is derived, so that a new kind of dynamic deflection model of cutter is established. Based on this model, a new set of efficient numerical simulation algorithm is presented. In the mean time, the static deflection of cutter is also formulated. Finally, the rationality of this model is shown by simulation instances.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
1999年第5期31-36,共6页
Journal of Mechanical Engineering
基金
国家自然科学基金
关键词
立铣刀
柔性刀杆
再生反馈
铣削过程模型
End mills Flexible cutter Regenerative feedback Milling process model Milled surface topography
