唐清春,周泽熙,王玉涛,谢栋.空间三维刀具误差补偿研究[J].表面技术,2018,47(7):96-103.
TANG Qing-chun,ZHOU Ze-xi,WANG Yu-tao,XIE Dong.3D Tool Error Compensation[J].Surface Technology,2018,47(7):96-103
空间三维刀具误差补偿研究
3D Tool Error Compensation
投稿时间:2018-01-19  修订日期:2018-07-20
DOI:10.16490/j.cnki.issn.1001-3660.2018.07.013
中文关键词:  五轴联动  空间三维  刀具误差补偿  后置处理  表面质量
英文关键词:five axis linkage  3D  tool error compensation  post processing  surface quality
基金项目:国家自然科学基金项目(51565006);2016年广西高校高水平创新团队及卓越学者计划资助项目
作者单位
唐清春 广西科技大学 工程训练中心,广西 柳州 545006 
周泽熙 广西科技大学 工程训练中心,广西 柳州 545006 
王玉涛 广西科技大学 工程训练中心,广西 柳州 545006 
谢栋 广西科技大学 工程训练中心,广西 柳州 545006 
AuthorInstitution
TANG Qing-chun Engineering Training Center, Guangxi University of Technology, Liuzhou 545006, China 
ZHOU Ze-xi Engineering Training Center, Guangxi University of Technology, Liuzhou 545006, China 
WANG Yu-tao Engineering Training Center, Guangxi University of Technology, Liuzhou 545006, China 
XIE Dong Engineering Training Center, Guangxi University of Technology, Liuzhou 545006, China 
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中文摘要:
      目的 研究空间三维状态下刀具误差补偿方法,提高多轴加工复杂自由曲面表面轮廓精度。方法 首先对五轴加工中刀具与工件接触方式及刀具中心点、刀具接触点位置及矢量关系进行了分析,推导出空间刀具误差补偿数学模型,通过MATLAB初步对补偿算法进行了验证。基于双摆头式五轴机床运动学模型,结合刀具误差补偿模型,开发了带有刀具误差补偿功能的专用后置处理器。最后,通过开发的专用后置处理软件进行G代码转换,采用某叶片试件进行了仿真和实际切削实验,并对实验结果进行了分析。结果 在复杂曲面加工中,通过合理的刀具误差补偿方法,可获得理论刀具尺寸下同样的表面质量及轮廓精度。刀具误差补偿值越小,补偿效果越明显,加工效果与理论结果越接近。叶片试件分别采用f8、f9、f9.5及f10刀具仿真加工,与理论f 10刀具加工的数据对比,三种尺寸刀具补偿加工后的残留误差差值分别约为0.08、0.06、0.04 mm,其中f9.5的刀具误差补偿后的加工效果与理论结果最接近。结论 采用刀具空间误差补偿方法,可获得与理论刀具一样的切削效果,有效提高零件的表面质量,不仅可以获得稳定的复杂零件轮廓精度,还可以减少辅助时间。误差补偿效果与实际补偿值的大小有关,补偿值越小,补偿效果越好。
英文摘要:
      The work aims to study the tool error compensation method in 3D state to improve the surface profile precision of multi axis machining complex free-form surface. The contact mode between tool and workpiece, the tool center point, the tool contact point position and the vector in the five axis machining were analyzed to deduce the mathematical model of space tool error compensation and the compensation algorithm was verified by MATLAB. Based on the kinematic model of five axis machine tools and combining with the tool error compensation model, a special post processor with the function of tool error compensation was developed. The G code was converted by the developed special post processing software. The simulation and actual cutting experiments were carried out with a blade sample and the experimental results were analyzed. From the results, the same surface quality and contour accuracy under the theoretical tool dimension could be obtained through reasonable tool error compensation method in complex surface machining. The smaller the tool error compensation value was, the better the compensation effect could be achieved and the closer the processing effect approximated to the theoretical result. The blade specimens were simulated for machining by f8, f9, f 9.5 and f10, respectively. Compared with the theoretical machining data ofφ10 tool, the residual error values of tools in three dimensions after compensation machining were 0.08, 0.06 and 0.04 mm, respectively, and the error compensation machining of f9.5 tool error was closest to the theoretical results. The same cutting effect as that of the theoretical tool can be obtained by 3D tool error compensation method to improve the surface quality of parts effectively. The error compensation method can be used to obtain stable contour accuracy of complex parts and reduce the auxiliary time. The error compensation effect is related to the size of the actual compensation value, so the smaller the compensation value is, the better the compensation effect can be achieved.
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