摘要
Abstract
Aiming at the problems of poor rigidity and easy deformation of large thin-walled ring parts(diameter≥1 000 mm,wall thickness ≤3 mm)in aero-engine nacelles,as well as clamping deformation,low efficiency and insufficient accuracy in tra-ditional offline detection,an on-line detection technology integrated with Renishaw probe and CNC lathe was explored.By plan-ning the detection geometric elements of the ring part and the movement path of the probe,optimizing the calibration scheme,and compiling a macro program integrating anti-collision logic and error feedback,the integration of machining-measurement-verifica-tion was realized.Experimental verification was carried out with a Φ1 437 mm titanium alloy thin-walled ring part as the object.The results showed that the repeatability error of the optimized probe calibration was ≤0.002 mm,the deviation between the on-line measurement value and the true value of the coordinate measuring machine was ≤0.03 mm.Compared with the tradi-tional vernier caliper,the measurement error was reduced by 50％,and the detection accuracy was doubled;the measurement time per part was shortened from 2～3 min to 20～30 s,saving 50％of labor cost and effectively avoiding the risk of clamping de-formation.This process expanded the detection function of CNC machine tools,provided a practical scheme for the efficient and high-precision quality control of similar large thin-walled parts,and met the precision production needs of the aviation manufactur-ing field.关键词
大型薄壁环件/在线测量/雷尼绍测头/宏程序编程/路径规划/误差反馈Key words
large thin-walled ring parts/on-line measurement/Renishaw probe/macro program programming/path planning/er-ror feedback分类
机械制造
