手法を比較

	製造・組立配慮設計	公差重ね合わせ
分野	製造工学	製造工学
系統	Process / pipeline	Process / pipeline
提唱年	1994	2006
提唱者	Boothroyd, G., Dewhurst, P.	Drake, P. J.
種類	Systematic approach to cost-effective product design	Method for analyzing tolerance accumulation in assemblies
原典	Boothroyd, G., Dewhurst, P., & Knight, W. A. (1994). Product Design for Manufacturing and Assembly (1st ed.). Marcel Dekker. ISBN: 0-8247-9157-6	Drake, P. J. (2006). Dimensioning and Tolerancing Handbook (2nd ed.). McGraw-Hill. ISBN: 0-07-145215-8
別名	DFMA, Design for manufacturability, DFA	Stack-up analysis, Tolerance accumulation, Geometric tolerance
関連	4	4
概要	Design for Manufacturing and Assembly (DFMA) is a systematic methodology for creating products that are inherently easier and less expensive to manufacture and assemble. Developed by Boothroyd, Dewhurst, and Knight, DFMA evaluates design choices based on their impact on production cost, quality, and speed, guiding designers toward solutions that balance performance, manufacturability, and economics.	Tolerance stack-up analysis is a method for predicting the cumulative effect of manufacturing tolerances on the final dimensions and fit of assembled components. When parts with individual tolerances are assembled together, their tolerances combine in complex ways, often producing a result that is worse than each part individually. Stack-up analysis ensures that the final assembly will function correctly despite individual part tolerances, or identifies where tighter tolerances are necessary.