Kinematics constrained five-axis tool path planning for high material removal rate  

作　　者：YE Tao XIONG CalHua XIONG YouLun ZHAO Can 

机构地区：[1]State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China [2]Modern Manufacturing Engineering Center, Heilongjiang University of Science and Technology, Harbin 150027, China

出　　处：《Science China(Technological Sciences)》2011年第12期3155-3165,共11页中国科学（技术科学英文版）

基　　金：supported by the National Basic Research Program of China ("973" Program) (Grant No. 2011CB706800);the National Natural Science Foundation of China (Grant No. 50835004);the National Funds for Distinguished Young Scientists of China (Grant No. 51025518)

摘　　要：Traditional five-axis tool path planning methods mostly focus on differential geometric characteristics between the cutter and the workpiece surface to increase the material removal rate(i.e.,by minimizing path length,improving curvature matching,maximizing local cutting width,etc.) . However,material removal rate is not only related to geometric conditions such as the local cutting width,but also constrained by feeding speed as well as the motion capacity of the five-axis machine. This research integrates machine tool kinematics and cutter-workpiece contact kinematics to present a general kinematical model for five-axis machining process. Major steps of the proposed method include:(1) to establish the forward kinematical relationship between the motion of the machine tool axes and the cutter contact point;(2) to establish a tool path optimization model for high material removal rate based on both differential geometrical property and the contact kinematics between the cutter and workpiece;(3) to convert cutter orientation and cutting direction optimization problem into a concave quadratic planning(QP) model. Tool path will finally be generated from the underlying optimal cutting direction field. Through solving the time-optimal trajectory generation problem and machining experiment,we demonstrate the validity and effectiveness of the proposed method.

关 键 词：tool path material removal rate contact motion quadratic planning 

分 类 号：TP242[自动化与计算机技术—检测技术与自动化装置] TH-39[自动化与计算机技术—控制科学与工程]