摘要
激光烧蚀技术以其高能量密度、优良的聚焦性和非接触性等独特优势,成为加工超硬材料的理想选择。为了自主开发超硬刀具材料加工用数控激光机床,首先采用D–H法建立了机床的运动学模型,确定了各轴的行程范围和基于加工坐标系的工作空间。随后,利用MATLAB、Python和UG等多种方法开发了相应的后置处理器,以实现将加工指令转化为机床控制系统可执行的指令。最后,为了验证运动学模型的准确性和有效性,在VERICUT中创建了一个虚拟机床并进行运动仿真,仿真结果显示机床运动过程未出现干涉和程序错误等情况,表明所构建的运动学模型是准确可靠的。研究发现,在激光焦距为130 mm的情况下,机床引入双转台后的工作空间增加了1.9倍,能够满足更为复杂的加工需求。
Laser ablation technology,with its high energy density,excellent focusing capability,and non-contact nature,has become an ideal choice for processing superhard materials.To develop a CNC laser machine tool for processing superhard cutting tool materials,a kinematic model of the machine tool was established using the D–H method,determining the range of motion for each axis and defining the workspace based on the machining coordinate system.Subsequently,post processors were developed using various methods such as MATLAB,Python and UG to convert the machining instructions into executable instructions for the machine tool control system.Finally,a virtual machine tool was created in VERICUT for motion simulation to validate the accuracy and effectiveness of the kinematic model.The simulation results confirmed that there were no collisions or programming errors during the machine tool motion,indicating the accuracy and reliability of the constructed kinematic model.The study also revealed that incorporating a dual rotary table increased the workspace of the machine tool by 1.9 times when the laser focal length was set at 130 mm,thus meeting the requirements for more complex machining tasks.
作者
李忠群
张伟峰
刘强
杨尚臻
殷振朔
LI Zhongqun;ZHANG Weifeng;LIU Qiang;YANG Shangzhen;YIN Zhenshuo(Hunan University of Technology,Zhuzhou 412007,China;Jiangxi Research Institute of Beihang University,Nanchang 330000,China)
出处
《航空制造技术》
CSCD
北大核心
2023年第21期14-21,共8页
Aeronautical Manufacturing Technology
基金
湖南省自然科学基金(2020JJ4270)。
关键词
超硬材料刀片
激光加工机床
运动学分析
轨迹仿真
后置处理
Superhard material inserts
Machine tool for laser processing
Kinematic analysis
Machining path simulation
Post processing
作者简介
李忠群,教授,博士,研究方向为高效数控加工、虚拟与智能制造。
