{"title":"Enhancing machining accuracy reliability of multi-axis CNC machine tools using an advanced importance sampling method","authors":"Zhiming Wang, Hao Yuan","doi":"10.17531/EIN.2021.3.17","DOIUrl":null,"url":null,"abstract":"The purpose of this paper is to propose a general precision allocation method to improve\nmachining performance of CNC machine tools based on certain design requirements. A\ncomprehensive error model of machine tools is established by using the differential motion\nrelation of coordinate frames. Based on the comprehensive error model, a reliability model\nis established by updating the primary reliability with an advanced importance sampling\nmethod, which is used to predict the machining accuracy reliability of machine tools. Besides, to identify and optimize geometric error parameters which have a great influence on machining accuracy reliability of machine tools, the sensitivity analysis of machining accuracy is carried out by improved first-order second-moment method. Taking a large CNC gantry guide rail grinder as an example, the optimization results show that the method is effective and can realize reliability optimization of machining accuracy.","PeriodicalId":50549,"journal":{"name":"Eksploatacja I Niezawodnosc-Maintenance and Reliability","volume":"133 1","pages":""},"PeriodicalIF":2.2000,"publicationDate":"2021-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Eksploatacja I Niezawodnosc-Maintenance and Reliability","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.17531/EIN.2021.3.17","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 2
Abstract
The purpose of this paper is to propose a general precision allocation method to improve
machining performance of CNC machine tools based on certain design requirements. A
comprehensive error model of machine tools is established by using the differential motion
relation of coordinate frames. Based on the comprehensive error model, a reliability model
is established by updating the primary reliability with an advanced importance sampling
method, which is used to predict the machining accuracy reliability of machine tools. Besides, to identify and optimize geometric error parameters which have a great influence on machining accuracy reliability of machine tools, the sensitivity analysis of machining accuracy is carried out by improved first-order second-moment method. Taking a large CNC gantry guide rail grinder as an example, the optimization results show that the method is effective and can realize reliability optimization of machining accuracy.
期刊介绍：
The quarterly Eksploatacja i Niezawodność – Maintenance and Reliability publishes articles containing original results of experimental research on the durabilty and reliability of technical objects. We also accept papers presenting theoretical analyses supported by physical interpretation of causes or ones that have been verified empirically. Eksploatacja i Niezawodność – Maintenance and Reliability also publishes articles on innovative modeling approaches and research methods regarding the durability and reliability of objects.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
