2 Dimensional Analysis Results - How Do Part and Assembly Tolerances Affect the Build?
Channel: Dimensional Control Systems
Date: 2015-09-10

Part of the 3DCS Training Series: http://www.3dcs.com/getting-started-3dcs-dimensional-analysis.html

The purpose of a tolerance analysis model is to understand how part and assembly tolerances affect the overall build and fit of a final product. 

There are three main types of results that can be obtained directly from a tolerance analysis model in 3DCS: a Monte Carlo simulation, a “High-Low-Median” sensitivity analysis, and a GeoFactor geometric effects analysis. All three analyses provide different information for assessing product quality.  

The Monte Carlo simulation (an industry standard) predicts what percentage of builds will fail to meet critical quality characteristics. The High-Low-Median analysis, or HLM, and GeoFactor analysis both identify which tolerances are contributing the most to those failures.  

HLM analyzes the contribution based on the total range of a tolerance.  GeoFactor analyzes the contribution based on part geometry.  

A combination of these three results provides the necessary information for tolerance, design, and process optimization.  These optimizations can lead to reductions in assembly time, re-work, material waste, and costly rework of tooling.

Music Credit: https://freemusicarchive.org/music/Jim_Rooster/She_Thinks_Herself_Immortal/Jim_Rooster_-_04_-_Girl_from_Lviv