李士鹏¹, 田利成², 秦旭达¹, 张笑宇¹, 张烘州³, 李永行⁴
AuthorsHTML:李士鹏¹, 田利成², 秦旭达¹, 张笑宇¹, 张烘州³, 李永行⁴
AuthorsListE:Li Shipeng¹, Tian Licheng², Qin Xuda¹, Zhang Xiaoyu¹, Zhang Hongzhou³, Li Yonghang⁴
AuthorsHTMLE:Li Shipeng¹, Tian Licheng², Qin Xuda¹, Zhang Xiaoyu¹, Zhang Hongzhou³, Li Yonghang⁴
Unit:1. 天津大学机械工程学院，天津300072；2. 北京深远世宁科技有限公司，北京 102206；3. 上海飞机制造有限公司，上海 200436；4. 中国商用飞机有限责任公司北京民用飞机技术研究中心，北京 102211
Unit_EngLish:1．School of Mechanical Engineering, Tianjin University, Tianjin 300072, China
2．Beijing Shenyuanshining Technology Company Limited, Beijing 102206, China
3．Shanghai Aircraft Manufacturing Company Limited, Shanghai 200436, China
4．Beijing Aeronautical Science and Technology Research Institute, Commercial Aircraft Corporation of China Limited, Beijing 102211, China
Abstract_Chinese:螺旋铣孔技术有较高的加工质量及加工效率, 得到国内外广泛关注．但在小孔加工过程中, 在螺旋铣刀小直径、大长径比和径向切削力的共同作用下, 刀具易发生挠曲变形, 导致较大的孔径误差．针对此问题, 通过研究刀具受力挠曲变形规律, 结合切削力与刀具挠曲变形量间的耦合关系, 建立了螺旋铣孔切削力的柔性预测模型; 并基于镜像对称原理和迭代算法对孔径进行误差补偿．试验结果表明, 补偿之后孔径误差由约35 μm降低到5 μm左右, 极大改善了小直径孔的加工质量．
Abstract_English:Helical milling technology has high processing quality and efficiency，which has gained wide attention from researchers home and abroad. But in the manufacturing of small holes，the combined action of small diameter of helical milling tool，large length-diameter ratio and radial force can lead to deflection deformation of tool and obvious diameter error of hole. Aiming at this problem，the deflection deformation rule of tool under cutting force and the coupling relationship between cutting force and deflection deformation of tool were studied. Flexible cutting force prediction model in the process of hole helical milling was built. Then based on mirror image principle and iterative algorithm，the error of hole diameter was compensated. Testing results show that after compensation the diameter error is reduced from 35 μm to 5 μm，which greatly improves the processing precision of small hole.
Keyword_Chinese:螺旋铣削; 柔性切削力模型; 刀具挠曲变形; 误差补偿
Keywords_English:helical milling; flexible cutting force model; tool deflection deformation; error compensation

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