摘要
为了控制在多轴机床上对圆弧曲面进行精确的铣削加工,建立了铣削力解析模型。在加工过程中为了保证加工的精度,铣刀与被加工表面之间保持垂直,这就造成了瞬时未变形切屑厚度在铣刀轴线方向上是一个变量。因此圆弧曲面铣削加工是一个动态切削过程。将铣刀沿轴线方向划分成若干微段,每个微段的切削看作一个稳态切削,根据已有的稳态过程铣削力模型,可以得到在每个微段上单位铣削力模型,然后沿轴线方向积分得到圆弧曲面铣削加工铣削力解析模型。通过实验,验证了该模型的有效性。
Multi-axis machine tools can more accurately machine curved surfaces. An analytical model was developed to predict the end-milling forces for arc curved surfaces to provide more precise control of the machine tools. The milling cutter axis must be kept perpendicular to the work piece surface to accurately machine arc curved surfaces. The undeformed chip thickness is then a variable in the milling cutter axis direction so the process is transient. The local milling forces were calculated by dividing the milling cutter into small segments with the milling on each segment analyzed as a steady-state process based on existing steady-state milling force models. The local milling forces were then combined to give the total milling forces model. Experiments confirmed the accuracy of the analytical model.
出处
《清华大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
2004年第8期1150-1152,共3页
Journal of Tsinghua University(Science and Technology)
关键词
机械动力学
铣削力模型
解析模型
圆弧曲面
mechanical dynamics
milling force model
analytical model
arc curved surfaces