基于刀触点路径截面线法的不规则曲面锯切加工算法研究  

Research on sawing process algorithm of irregular curve surface based on cutter contact path intersection line method

作　　者：吴玉厚[1,2] 赵德宏 闫广宇[2] 

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024 [2]沈阳建筑大学机械工程学院,辽宁沈阳110168

出　　处：《大连理工大学学报》2017年第4期352-359,共8页Journal of Dalian University of Technology

基　　金：教育部创新团队发展计划资助项目(IRT15R45);辽宁省自然科学基金资助项目(2014020069);沈阳市科技计划项目(F16234708)

摘　　要：为获得更高的不规则曲面加工效率,研究了一种基于刀触点路径截面线法的锯切加工算法.该算法在点云数据的基础上,通过截交面产生截交线;通过调整锯片直径、步长满足截面线最小曲率要求,拟合产生刀触点路径,计算刀位点路径.仿真实验表明,加工效率可提高4倍左右;而在实际加工实验中加工效率提高了5倍.3D-Z轴定向模型分析表明,实际加工模型最大偏差4.005mm,平均偏差0.929mm,模型中不存在过切区域,满足工业生产要求,但存在一定量的欠切区域.研究结果为后续研究奠定了良好基础.In order to achieve higher efficiency in irregular curve surface processing, a kind of sawing process algorithm is studied based on cutter contact path intersection line method. In this algorithm, based on the point cloud data, intersection line is generated from intersection surface; then the blade diameter and step length are adjusted to meet the requirement of the minimum intersection line curvature, cutter contact path is simulated, and cutter site path is calculated. Simulation experiments show that machining efficiency can be improved about 4 times, which is 5 times in the machining experiments actually. The analysis on 3D-Z axis orientation model shows that the maximum deviation of the actual process model is 4. 005 mm, the average deviation is 0. 929 mm and there is no over cutting area in the model which meet the requirements of industrial production, but there is a certain amount of owe cutting area. The study results lay a good foundation for further research.

关 键 词：锯切加工 不规则曲面 点云数据 截面线法 刀触点路径 最小曲率 锯片直径 

分 类 号：TH164[机械工程—机械制造及自动化]