השוואת שיטות

	תכנון לייצור והרכבה	ערימת מרווחים (Tolerance Stack-up)
תחום	ייצור	ייצור
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1994	2006
הוגה השיטה	Boothroyd, G., Dewhurst, P.	Drake, P. J.
סוג	Systematic approach to cost-effective product design	Method for analyzing tolerance accumulation in assemblies
מקור מכונן	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
כינויים	DFMA, Design for manufacturability, DFA	Stack-up analysis, Tolerance accumulation, Geometric tolerance
קשורות	4	4
תקציר	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.