数控加工刀位轨迹优化处理(6)

摘要................................................................................................................................................... I Abstract ............................................................................................................................................ II

1 绪 论 ....................................................................................................................................... 1

1.1 课题的来源与研究目的、意义 ....................................................................................... 1

1.2 轨迹优化技术的发展现状 ............................................................................................... 2

1.3 本文研究的主要内容 ....................................................................................................... 8

2 刀位轨迹优化技术 ................................................................................................................. 10

2.1 轨迹优化原理 ................................................................................................................. 10

2.2 轨迹优化评价指标 ......................................................................................................... 18

2.3 轨迹优化实施方案 ......................................................................................................... 19

2.4 本章小结 ......................................................................................................................... 23

3 刀位轨迹分段方法 ................................................................................................................. 24

3.1 常见模具加工刀位轨迹特征分析 ................................................................................. 24

3.2 刀位轨迹不连续性判据研究 ......................................................................................... 28

3.3 刀位轨迹分段算法设计 ................................................................................................. 36

3.4 本章小结 ......................................................................................................................... 37

4 刀位轨迹拟合方法 ................................................................................................................. 39

4.1分段区间样条型值点抽样方法 ...................................................................................... 39

4.2 NURBS曲线快速拟合算法设计 ...................................................................................... 40

4.3 拟合算法测试 ................................................................................................................. 42

4.4 本章小结 ......................................................................................................................... 44

5 轨迹优化技术的测试验证 ......................................................................................................... 45

5.1 轨迹优化软件开发 ......................................................................................................... 45

5.2 轨迹优化效果验证实验 ................................................................................................. 46

5.3 本章小结 ......................................................................................................................... 49

6 总结与展望 ............................................................................................................................. 50

6.1 工作总结 ......................................................................................................................... 50

6.2 工作展望 ......................................................................................................................... 51

致 谢 ......................................................................................................................................... 53

参考文献 ......................................................................................................................................... 54

附录1(攻读学位期间发表论文目录) ........................................................................................... 57

附录2(攻读学位期间获得的专利) ............................................................................................... 58