![]() Tolerance of the whole assembly can be obtained as − ~+mn~ (TU – TL) / 2 = ~+mn~ (62.5-59.5)/2 = ~+mn~ 1. We calculate the upper specification limit (USL)size for each of the sheets like below − For SHEET-1:Īdd the USL thickness values of all the sheets, we obtain the USL of the whole assembly as below − We add the LSL thickness values of all the sheets, and will obtain the LSL thickness of the whole assembly as below We calculate the lower specification limit (LSL)size for each of the sheets like below − For SHEET-1: We have to calculate the dimension “ X" and its tolerance value which is proceed as below − The thickness and tolerance of the four sheets are displayed in the above figure. Let, we have an assembly of four thick sheets like below − Tolerance stack analysis is actually the study of the mutual relationship between the allowed deviation limits between parts and assemblies. Few example are done to practice loop diagram. this revises some basic of stack-up analysis. Discussion about Worst Case Method of Assembly Tolerance Stack Up The Essence In series of tolerance stack-up lectures, this is 3rd one. ![]() The simplest procedure is termed as the worst case method, which we discuss here. In short, assembly tolerance stacks up analysis is defined as the tolerance value of the whole assembly or a specific gap of the assembly when we are aware about the tolerance values of all its components.Īssembly tolerance chain stack up analysis can be accomplished in different ways. ![]() What is Assembly Tolerance Stack up Analysis? Not wanting to give up on the intrinsic gains of the statistical tolerancing method one has tried to relax these distributional assumptions in a variety of ways.
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