基于参数化模型的船用螺旋桨的数控加工  

CNC machining of marine propeller based on parameterized model

作　　者：苟向锋[1] 朱星辰 GOU Xiang-feng;ZHU Xing-chen(School of Mechanical Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学机械工程学院,天津300387

出　　处：《天津工业大学学报》2020年第4期82-88,共7页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(51365025);天津市自然科学基金重点项目(6JCZDJC38500);天津市自然科学基金项目(18JCYBJC88800)。

摘　　要：为实现螺旋桨的参数化设计及数控加工,根据螺旋桨桨叶的几何结构和成型原理建立桨叶曲面的参数化数学方程;分析螺旋桨的加工工艺,基于桨叶参数化数学方程计算五轴加工螺旋桨的刀位点和刀轴矢量,并通过后置处理将刀位信息转化为机床运动,得到数控加工程序,在Vericut中进行螺旋桨数控加工仿真。结果表明:基于参数化方程的设计方法提高了桨叶曲面的设计效率和准确性;加工仿真结果验证了刀具路径和数控程序的可行性,满足螺旋桨的加工要求;基于桨叶参数化数学模型可以自动生成数控程序,提高螺旋桨的数控编程效率和加工精度。To achieve parametric design and CNC machining of propellers,parameterized mathematical equation for the surface of the propeller blade is established based on the geometry and forming principle of the propeller blade.The processing technology of the propeller is analyzed,and the tool position and the tool axis vector for 5-axis machining of propeller are calculated based on the parameterized mathematical equation of the propeller.CNC machining program was obtained by converting the tool position information into the motion coordinates.Finally,the CNC simulation of the propeller was performed in Vericut.The results show that the design method based on parametric equations improves the design efficiency and accuracy of the blade surface.The simulation results verified the tool path and the CNC program,meeted the processing requirements of the propeller.The CNC machining calculation method based on parameterized mathematical model of blade can automatically generate CNC programs and improve the programming efficiency and machining accuracy of the propeller.

关 键 词：参数化模型 螺旋桨 数学方程 数控加工 加工仿真 

分 类 号：TH164[机械工程—机械制造及自动化] TP391.73[自动化与计算机技术—计算机应用技术]