| 基于曲率拟合及变刀触点的防干涉四轴磨削算法 |
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| 引用本文： | 毛磊,何卫,周洁,骆广进,胡旭晓,周哲平.基于曲率拟合及变刀触点的防干涉四轴磨削算法[J].中国机械工程,2011,22(17). |
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| 作者姓名： | 毛磊 何卫 周洁 骆广进 胡旭晓 周哲平 |
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| 作者单位： | 1. 浙江大学,杭州,310027
2. 杭州机床集团有限公司,杭州,310022 |
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| 基金项目： | 国家科技重大专项(2009ZX04014-026-04); 高等学校博士学科点专项科研基金资助项目(200803350028); 浙江省科技重大专项(2008C01026-1) |
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| 摘 要： | 针对四轴数控磨削机床加工复杂曲面时的局部干涉问题,提出一种基于圆弧面砂轮的干涉检测与消除方法。基于对两种局部干涉的分析,首先根据曲率拟合要求确定最佳的相对刀轴方向以避免过切干涉,然后根据磨削点的法向量确定合适的刀触点以避免轴向干涉。利用UG OPEN API通过二次开发完成叶片叶盆表面的加工仿真,仿真结果表明,该方法切实可行,表面加工误差可小于0.05mm。
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| 关 键 词： | 局部干涉 圆弧面砂轮 曲率拟合 最佳刀轴方向 变刀触点 |
Curvature Fitting and Changing-TCpoints Based 4-Axis Grinding Algorithm |
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| Mao Lei He Wei Zhou Jie Luo Guangjin Hu Xuxiao Zhou Zheping .Zhejiang University,Hangzhou, .Hangzhou Machine Tool Group Co.,Ltd..Curvature Fitting and Changing-TCpoints Based 4-Axis Grinding Algorithm[J].China Mechanical Engineering,2011,22(17). |
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| Authors: | Mao Lei He Wei Zhou Jie Luo Guangjin Hu Xuxiao Zhou Zheping Zhejiang University Hangzhou Hangzhou Machine Tool Group Co Ltd |
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| Affiliation: | Mao Lei1 He Wei2 Zhou Jie1 Luo Guangjin2 Hu Xuxiao1 Zhou Zheping2 1.Zhejiang University,Hangzhou,310027 2.Hangzhou Machine Tool Group Co.,Ltd.,310022 |
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| Abstract: | Aiming to the local interferences when grinding a curved surface in 4-axis CNC grinder,a method of interference detection and elimination was proposed based on an arcs surface grinding wheel.Through the analysis of interferences,firstly the optimum relative wheel-pivot was determined to avoid the undercutting according to the fitting requirements of curvature.Then the appropriate tool contact point(TCpoint) was found on the basis of the normal vector of grinding contact points(GCpoints),so that the axial in... |
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| Keywords: | local interference arcs surface grinding wheel curvature fitting optimum wheel-pivot orientation changing-TCpoints |
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