精密孔系零件数控加工精度原位修正方法研究  

Research on the In-situ Correction Method of NC Machining Accuracy of Parts with Precision Holes

作　　者：诸进才[1] 胡艳娥[1] ZHU Jin-cai;HU Yan-e(School of Electromechanical Engineering Guangzhou Railway Polytechnic,Guangdong Guangzhou 510430,China)

机构地区：[1]广州铁路职业技术学院机电工程学院,广东广州510430

出　　处：《机械设计与制造》2023年第6期172-175,共4页Machinery Design & Manufacture

基　　金：广东省普通高校工程技术开发中心(2019GGCZX008)。

摘　　要：通过为数控机床配备零件精度检测用测头以及相应的检测程序,即构成在机检测系统。在机检测将加工和检测集成在一台机床上完成,其核心优势在于加工的过程中就可以及时发现零件的偏差趋势。如果在检测系统增加原位修正的功能,即零件无须从工作台上卸下即可根据检测结果对工件进行补偿加工,可进一步优化在机检测系统的生态链。构建了基于“镜像补偿”的加工误差原位修正模型,给出孔系零件在机检测及其误差修正方法,最后通过一精密孔系零件加工案例证明了该方法的有效性。By equipping numerical control(NC)machine tool with a probe and corresponding measuring programs,an on-machine measurement(OMM)system is built.The OMM,integrating machining and measuring in a same NC machine,which core advantage is that the machining error can be predicted before the workpiece is unloaded.If adding error correction function,the ecological chain of OMM system will be further optimized.In this paper,an in-situ correction principle model for machining error based on"mirror compensation"is proposed,and then a meathod of OMM and in-situ correction for parts with precision holes is put forward.Finally,the effectiveness of this method is proved by a machining part with precision holes.

关 键 词：孔系零件 加工精度 在机检测 镜像补偿 原位修正 

分 类 号：TH16[机械工程—机械制造及自动化] TH165.4