
Explore tolerance stackup by summing variations for parts and assemblies with minus and plus tolerances. Use manual and computer models for worst-case analyses to predict interference and optimize design.
Examine a case study of tolerance stack-up in an assembly. Use GD&T and a dimension chain to determine max and min limits.
Explore assembly shift tolerance stack‑up in gd&t, analyzing clearance between hole and shaft, fixed versus floating fasteners, and how maximum deviation governs misalignment in assemblies.
This case study guides a tolerance stack-up analysis for a two-part joint, using the tolerance stack method to determine maximum height and hole-to-bottom-surface dimensions with plus/minus tolerances.
Review geometric tolerancing basics, including size, form, orientation, and position tolerances, datum references, and the role of ISO and ASME standards in defining the tolerance stack-up.
Calculate the profile tolerance stackup by transforming it into plus/minus forms. Record these on three form lines and use the profile tolerance as the worst boundary.
Learn to assess interference between a fastener and hole using gd&t tolerance stack-up, calculate maximum and minimum distances, and consider the worst-case boundary along with the position modifier.
Understand the function of the LMC modifier in tolerance stack-up and guarantee material between the hole and feature. Calculate worst-case boundaries by combining hole size, position, and bonuses.
calculate orientation tolerance in tolerance stackup using datum a, b, c, perpendicularity, and profile tolerances to determine the maximum and minimum thickness when two parts assemble.
Explore how the projected tolerance zone controls the upper portion of a fastener to prevent interference in GD&T tolerance stack-up, distinguishing fixed versus floating fasteners.
Explore runout tolerance stack-up, distinguishing total runout and runout control of diameter tolerance, and transform runout into position in a practical A and B assembly example to compute maximum gap.
Explore a case study on tolerance stack-up using statistic tolerance calculation to find max and min gaps between A and B, and compare worst-case vs statistical stacks with adjustment factors.
The final exam tests your ability to calculate the maximum deviation in a tolerance stack-up between axes and holes to ensure proper pin installation.
Course participants will be trained to apply tolerance stack-up analysis techniques to a wide variety of assemblies per GD&T requirements of ASME Y14.5-2018, from the very simple to the more complex situations commonly faced in industry today. Both plus and minus and geometrically toleranced assemblies will be examined and stack-up analysis taught and practiced on each. Many different datum structures will be discussed and analyzed. The concepts taught in this course are: loop analysis (also known as circuit diagrams), inner and outer boundaries, minimum gap, maximum wall thickness, maximum interference, minimum and maximum overall dimensions, fixed and floating fastener assembly conditions, projected tolerance zones, the logic of stack-up analysis, statistical tolerancing , and much more.
Introduction
1 Introduction
Chapter 1 Linear Tolerance Stackup
2 Tolerance Stackup Briefing
3 Linear Tolerance Stackup
4 Case Study#1
5 Assembly Shift Tolerance Stackup
6 Case Study#2
Chapter 2 Geometric Tolerance Stackup
7 Geometric Tolerance Review
8 Profile Tolerance Stackup
9 Case Study#3
10 Position Tolerance Stackup
11 Case Study#4
12 Hole-Shaft Assembly Position Tolerance Stack-up
13 Case Study#5
14 Factors affecting Assembly Shift
Chapter 3 MMC/LMC Modifier Tolerance Stackup
15 MMC Modifier Tolerance Stackup
16 Case Study#6
17 LMC Modifier Tolerance Stackup
18 Case Study#7
Chapter 4 Datum and Tolerance Stackup
19 Form Tolerance of Datum Feature to Tolerance Stackup
20 Orientation Tolerance of Datum Feature to Tolerance Stackup
21 Case Study#8
22 Datum Shift Tolerance Stackup
23 SIM/SEP REQT Tolerance Stackup
24 Case Study#9
Chapter 5 Pattern TOP stackup
25 Projected Tolerance Zone to Tolerance Stackup
26 Pattern and Pattern as Datum
27 Case Study#10
28 Composite Tolerance Stackup
Chapter 6 Runout Tolerance Stackup
29 Runout Tolerance Stackup
30 Case Study#11
Chapter 7 Statistic Tolerance Stackup
31 Statistic Tolerance Stackup
32 Case Study#12
Comprehensive Case Study
33 Case Study#13
Final Exam
34 Final Exam