超硬砂轮精密修整中异常点修正方法研究  

Research on abnormal point correction method in precision dressingof superhard grinding wheel

作　　者：雷来贵 黎克楠 曹剑锋 张跃亭 肖双勇 曹阳 冯克明 LEI Laigui;LI Kenan;CAO Jianfeng;ZHANG Yueting;XIAO Shuangyong;CAO Yang;FENG Keming(Precision Industry Revolution Equipment Technology(Henan)Co.,Ltd.,Zhengzhou 450001,China;Zhengzhou Abrasive Grinding Research Institute Co.,Ltd.State Key Laboratory for High Performance Tools,Zhengzhou 450001,China;不详)

机构地区：[1]精工锐意科技(河南)有限公司,河南郑州450001 [2]郑州磨料磨具磨削研究所有限公司高性能工具全国重点实验室,河南郑州450001

出　　处：《超硬材料工程》2023年第6期10-16,共7页Superhard Material Engineering

基　　金：国家重点科研计划(2021YFB3701803)。

摘　　要：磨粒加工作为现代“高精、高效”零部件加工手段,相比其它加工方法具有不可替代性。其中以“高精度、复杂型面”为代表的超硬材料电镀砂轮,作为磨粒加工重点发展工具之一,相比传统磨具,具有磨削比高、磨削力小、发热少、环境友好、加工精度一致性好等优势,在现代高精密磨削中地位优势突发明显。而电镀砂轮因其本身采用人类已知的最硬材料金刚石、cBN磨料制成,其型面修整工具耐磨性与电镀砂轮相当,修整难度极大。其中工具砂轮本身的制造精度低、修整过程磨损严重,是造成超硬砂轮型面修整精度低的关键原因。针对电镀砂轮精密整形的技术难题,文章借鉴Pareto多目标优化问题解决思路,构建超硬砂轮复杂型面插补修整粒子矩阵模型,提出了利于工程应用的坐标单向逼近算法。通过坐标单向逼近算法推导出矩阵粒子实际位置与理想位置的坐标偏差矩阵,对修整路径的进行修正,得到最优修整路径。从而使工具砂轮制造精度低、修整过程磨损的难题得到有效补偿。最终通过电镀砂轮修整实验,验证了算法的正确性。Abrasive process as a modern"high precision,high efficiency"parts processing means,compared with other processing methods is irreplaceable.As one of the key tools for abrasive processing,electroplated grinding wheels with superhard materials,represented by"high precision and complex profiles",have advantages such as higher grinding ratio,less grinding force,less heating,environmentally friendly,and better consistency of machining precision,compared with traditional abrasive tools.Therefore,their position in modern high-precision grinding has a sudden and obvious advantage.But the electroplated grinding wheel made of diamond and cBN abrasive,the hardest materials known to mankind.The wear resistance of the profile dressing tool is comparable to that of the electroplated grinding wheel,so the dressing difficulty is extremely great.Low manufacturing precision and serious wear in dressing process of tool grinding wheel are the key reasons for low dressing precision of superhard grinding wheel profile.This paper aiming at the technical difficulties of precision shaping of electroplated grinding wheel,reference Pareto multi-objective optimization method,constructs the particle matrix model of interpolation dressing of complex surface of superhard grinding wheel,puts forward the coordinate unidirectional approximation algorithm which is beneficial to engineering application.The coordinate deviation matrix between the actual position and the ideal position of the matrix particle was derived through the unidirectional coordinate approximation algorithm,and the optimal dressing path was obtained by modifying the dressing path.In this way,the difficulty of low precision of grinding wheel and wear in dressing process had solved.Finally,the correctness of the algorithm is verified by the experiment of electroplated grinding wheel dressing.

关 键 词：Pareto算法 单向逼近算法 复杂曲线精密修正 超硬材料砂轮 

分 类 号：TH161[机械工程—机械制造及自动化] TQ164[化学工程—高温制品工业]