Design for assembly is the concept of carrying out critical thought early in the design stage to create assembly easement at the production stage. In the aerospace industry, products have very long lives, frequently being optimised rather than introducing new products. This has meant older products, which are stable income generators, have not benefited from the latest design for assembly methods and manufacturing technology suffers from obsolescence. It has been established that a large percentage of overall product cost is determined at the design stage; thus, existing products suffer from preloaded costs. This paper takes existing design for assembly methodologies and analyses them with respect to the unique challenges involved in legacy product redesign. Several novel factors that contribute to redesign analysis are identified such obsolescence impact and a holistic operation difficulty assessment. A tool is developed to identify potential redesign for assembly projects. The tool is demonstrated through the application of real data and comparing against business decisions. The tool was found to provide a strong indication of where profitable projects may be launched.

中文翻译：

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机械装配的重新设计方法

装配设计是在设计阶段早期进行批判性思考以在生产阶段创建装配地役权的概念。在航空航天工业中，产品寿命很长，经常被优化而不是推出新产品。这意味着作为稳定收入来源的旧产品无法从最新的装配方法设计中受益，制造技术也会过时。已经确定总体产品成本的很大一部分是在设计阶段确定的；因此，现有产品会受到预加载成本的影响。本文采用现有的装配方法设计，并针对传统产品重新设计所涉及的独特挑战对其进行分析。确定了有助于重新设计分析的几个新因素，例如过时影响和整体操作难度评估。开发了一种工具来识别装配项目的潜在重新设计。该工具通过实际数据的应用和与业务决策的比较来演示。发现该工具可以强有力地表明可以在何处启动可盈利的项目。