After learning the GD&T concepts, many participants find that they need a methodical way of adding these tolerances into an overall stack-up analysis. The 2-day Tolerance Stacks program is designed for engineers and others who work with stacks.
While there is no standard way to do stacks, a spreadsheet method is introduced which allows for both traditional plus/minus tolerances as well as geometric tolerances. We even teach how to handle the MMC “bonus” and “shift” tolerances, which are sometimes ignored, even in “worst-case” stacks.
Topic list:
- What are tolerance stacks?
- Review of GD&T
- Calculating the virtual condition
- Introduction to the stack form
- How to identify the stack path
- Entering traditional tolerances on the stack form for a part
- Entering traditional tolerances on the form for an assembly
- How to handle stacks with runout and concentricity
- How to handle stacks with profile and position
- MMC bonus tolerance in the stack
- Shift tolerance in the stack
- How to handle stacks with form and orientation
- Statistical stacks—root-sum-square (RSS) formula
- Variations of the RSS formula
This course can be made available for your entire group, and can be customized based on your needs and time constraints.
For a more detailed course outline and pricing information, contact us.
Occasionally we offer this class as a “public” seminar, which is ideal for individuals or companies that do not have enough participants to host an on-site class. If this might interest you, contact us to ask about upcoming dates and locations.
