INTRODUCTION FOR TOLERANCE STACKUP ANALYSIS TRAINING
Tolerance Stack is a study of dimensional relationships within a part or assembly. When a designer or engineer calculates a Tolerance Stack, he or she is calculating the maximum or minimum of:
- Part tolerances
- Part wall thicknesses
- Part travel
- Space available for a part
Allocating tolerances that meets assembly build, performance, process capability and least-cost requirements have always been a challenge for the manufacturing industry. GD & T incorporation in any company is never complete without the understanding and Implementation of Tolerance Stacks as a part of the design process.
COURSE OBJECTIVES
- Problem solving with underlying mathematical models and assumptions
- Advantages of each approach along with limitations are clearly explained
- Unique approach from design perspective for developing GD & T based drawings
- Estimation of PPM at design stage
INTENDED AUDIENCE
This course is recommended for :
- Practicing GD & T Engineers
- Design Engineers
- Product Engineers
- Quality Engineers
- Manufacturing Engineers
- DFM Team
PREREQUISITE
All participants must have a basic understanding of GD&T (Geometrical Dimensioning & Tolerancing) or GPS (Geometrical Product Specification).
METHODOLOGY
- This course is conducted in a seminar room
- Interactive and action based with personal examples.
- Numerous examples and exercises will be done at the end of each module for a better understanding
- Combination of short lectures, visual presentations, workshops, demonstrations, simulations and games. More emphasis is placed on workshops to allow the participants to learn the material presented in a fun and easy manner.
COURSE CONTENT
1.Introduction to Tolerance Analysis
i. Why TA is important?
ii. Two major types of TA
2.The Tolerance Stack up sketch
i. Three things required for a Tolerance Stack up sketch
ii. Conversion of Tolerances to Equi-Bi-lateral Tolerancing
iii. Tolerance Stack up report
3.Worst case Tolerance Stack up
i. Step by step calculation
ii. When to use worst case TA?
iii. Assumptions in Tolerance Stackup
4.Statistical Tolerance Analysis RSS
i. When to use statistical TA?
ii. Root sum square (RSS)
iii. Monte Carlo method
5.Stacks using coordinate dimensions
6.Stacks using runout & concentricity
7.Stacks using profile
8.Stacks using position
9.Stacks using form controls
10.Stacks using orientation controls
11.Understanding Process Capability
12.Common mistakes in Tolerance Analysis Practice
