{"title":"Automatic tolerance analyses by generation of assembly graph and mating edges from STEP AP 242 file of mechanical assembly","authors":"Mukunthan S., Manu R., D. Lawrence K.","doi":"10.1108/aa-11-2021-0155","DOIUrl":null,"url":null,"abstract":"\nPurpose\nThis paper aims to propose a method to automate the tolerance analyses of mechanical assembly using STandard for the Exchange of Product model data-Application Protocol Part 242 (STEP AP 242) files derived from the 3-D computer-aided design (CAD) models.\n\n\nDesign/methodology/approach\nProduct manufacturing information and mating information available in ISO 10303 STEP AP242 files resulting from the 3-D CAD model of mechanical assembly are extracted. The extracted geometric attributes, geometric dimensioning and tolerancing (GD&T) and mating information are used to automatically generate assembly graph and mating edges required for the tolerance analyses of the mechanical assembly by using the matrix approach.\n\n\nFindings\nThe feasibility of the proposed method is verified through two mechanical assembly case studies. The results of manual calculations and tolerance values computed by the automated method are very closely matching.\n\n\nPractical implications\nTolerance analysis is an integral part of product development that directly influences the cost and performance of a product. Apart from the academic interest, the work is expected to have positive implications for the digital design and smart manufacturing industry that involve in the development of solutions for automation of design and manufacturing system functions.\n\n\nOriginality/value\nThe approach presented in the paper that aids the automation of tolerance analyses of mechanical assembly is an innovative application of the STEP AP 242 file. The automation of tolerance analyses would improve the productivity and efficiency of the product realization process.\n","PeriodicalId":55448,"journal":{"name":"Assembly Automation","volume":"1 1","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Assembly Automation","FirstCategoryId":"94","ListUrlMain":"https://doi.org/10.1108/aa-11-2021-0155","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"AUTOMATION & CONTROL SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose
This paper aims to propose a method to automate the tolerance analyses of mechanical assembly using STandard for the Exchange of Product model data-Application Protocol Part 242 (STEP AP 242) files derived from the 3-D computer-aided design (CAD) models.
Design/methodology/approach
Product manufacturing information and mating information available in ISO 10303 STEP AP242 files resulting from the 3-D CAD model of mechanical assembly are extracted. The extracted geometric attributes, geometric dimensioning and tolerancing (GD&T) and mating information are used to automatically generate assembly graph and mating edges required for the tolerance analyses of the mechanical assembly by using the matrix approach.
Findings
The feasibility of the proposed method is verified through two mechanical assembly case studies. The results of manual calculations and tolerance values computed by the automated method are very closely matching.
Practical implications
Tolerance analysis is an integral part of product development that directly influences the cost and performance of a product. Apart from the academic interest, the work is expected to have positive implications for the digital design and smart manufacturing industry that involve in the development of solutions for automation of design and manufacturing system functions.
Originality/value
The approach presented in the paper that aids the automation of tolerance analyses of mechanical assembly is an innovative application of the STEP AP 242 file. The automation of tolerance analyses would improve the productivity and efficiency of the product realization process.
目的本文旨在提出一种使用从三维计算机辅助设计(CAD)模型导出的产品模型数据交换标准应用协议第242部分(STEP AP 242)文件来自动进行机械装配公差分析的方法。从机械装配的三维CAD模型中提取ISO 10303 STEP AP242文件中可用的产品制造信息和配合信息。提取的几何属性、几何尺寸标注和公差(GD&T)以及配合信息用于使用矩阵方法自动生成机械装配公差分析所需的装配图和配合边。通过两个机械装配实例验证了该方法的可行性。手动计算的结果与自动方法计算的公差值非常匹配。实际含义公差分析是产品开发的一个组成部分,它直接影响产品的成本和性能。除了学术兴趣之外,这项工作预计将对数字设计和智能制造行业产生积极影响,这些行业涉及设计和制造系统功能自动化解决方案的开发。独创性/价值本文提出的有助于机械装配公差分析自动化的方法是STEP AP 242文件的创新应用。公差分析的自动化将提高产品实现过程的生产力和效率。
期刊介绍:
Assembly Automation publishes peer reviewed research articles, technology reviews and specially commissioned case studies. Each issue includes high quality content covering all aspects of assembly technology and automation, and reflecting the most interesting and strategically important research and development activities from around the world. Because of this, readers can stay at the very forefront of industry developments.
All research articles undergo rigorous double-blind peer review, and the journal’s policy of not publishing work that has only been tested in simulation means that only the very best and most practical research articles are included. This ensures that the material that is published has real relevance and value for commercial manufacturing and research organizations.