Tolerance Stack-Up Analysis Tool
1D Tolerance Stack-up Analysis: Theoretical Foundation In mechanical design, 1D Tolerance Stack-up is the process of calculating the cumulative effect of manufacturing variations along a single linear axis. This analysis ensures that parts will assemble correctly and function as intended despite unavoidable production inaccuracies. Core Methodologies Worst Case (WC) Analysis: A deterministic model where all dimensions are assumed to be at their most unfavorable limit simultaneously. It provides 100% interchangeability but often leads to over-tightened, expensive tolerances. Root Sum Squares (RSS): A statistical model based on the Normal Distribution. It assumes that the probability of all parts being at their extreme limits is low. The total tolerance is the square root of the sum of the squares of individual tolerances. RSS Total = √(Tol₁² + Tol₂² + ... + Tolβ...