基于最小二乘法的叶轮智能加工单元测量系统搭建
2018-11-12
作者：赵科学1，2，刘业峰1，2，赵元1，2，陶林1，2，陈经伟3
单位：1辽宁省数控机床信息物理融合与智能制造重点实验室；2沈阳工学院；3沈阳机床集团（股份有限公司)高档数控机床国家重点实验室
摘要：测头的使用和数据分析在智能制造的高精度、高效率检测中具有重要意义。利用马波斯TS25工件测头设计一套随动测量方案，通过工件测头标定建立测头基准坐标系，沿工件平面和包覆面进行基面和回转面的最小二乘法位置寻优，并建立与最小二乘法结合的误差评价模型，以实现测头基于机床本身运动的误差修正。评价结果与海克斯康三坐标测量仪TIGO-SF050605进行了对比试验，智能加工单元以叶轮为载体，通过对测量数据的评价和验证，误差在17%以内，表明测量系统模型的正确性。同时也对测量系统内的雷尼绍TS72测量实施进行了说明，通过智能制造测量测头的使用，在首件检测及加工中可大幅提高检测和加工效率，具有较好的推广价值。
关键词：在机检测；叶轮加工；最小二乘法；西门子CNC
中图分类号：TG115；TG61；TH161.3文献标志码：A
Measurement System of Inteligent Automatic Machining Unit Based on Least
Square Method
Zhao Kexue，Liu Yefeng，Zhao Yuan，Tao Lin，Chen Jingwei
Abstract:The use of measuring head and data analysis are of great importance in the high precision and high efficiency detection of intelligent manufacturing.A set of followup measurement scheme is designed by using the workpiece probe of TS25 of marposs.Through the establishment of measuring workpiece probe calibration reference coordinate system，the workpiece plane and the surface of the coating on the surface of the base and the rotary location optimization，the leastsquare method and combined with least square method of error evaluation model are set up，in order to realize the measuring head error correction based on machine tool movement itself.Evaluation results of CMM TIGOSF050605 through the contrast test of intelligent processing unit on the carrier of the impeller，based on the optimal value of measured data，the actual validation，error within 17% showed the correctness of the measurement system model.At the same time，the implementation of renishaw TS72 is also described.The use of intelligent manufacturing measuring head can greatly improve the detection and processing efficiency of the first part in detection and processing.
Keywords:machine testing；impeller machining；least squares method；SIEMENS CNC