An Introduction to Tolerance Stack Analysis
What is it?
A one day course introducing Tolerance Stack Analysis.

Learn how to perform sophisticated tolerance analysis calculations to determine the build-up and effects of multiple tolerances, using simple spreadsheet software or a pocket calculator.

Course covers tolerance stack analysis for both conventional and geometrical tolerances.

Calculations for both component and assembly tolerance stacks are covered.

Learn how to take account of bonus tolerance and datum shift arising from the use of material condition modifiers (MMC and LMC) in geometrical tolerances.

Will it work?  Will it fit?  How else are you going to find out?
Duration
1 day.
Who is it for?
Engineers, designers and drawing office personnel who have a good understanding of the core principles of geometrical tolerancing (i.e. who have completed An Introduction to Geometrical Tolerancing).
What does it cover?
  • Introduction
  • Revision of core concepts
    • Maximum Material Principle
    • Virtual Condition
    • Bonus tolerance
    • Datum shift
  • What are tolerance stacks?
  • Step-by-step, the stack calculation process
    • specify the objective
    • specify the conditions
    • derive the vector loop for the stack chain
    • complete the stack table
  • tolerance stacks for components with conventional tolerances
  • tolerance stacks for components with geometrical tolerances
    • working with location tolerances
    • working with orientation tolerances
    • working with form tolerances
    • working with profile tolerances
    • working with run-out tolerances
  • taking account of bonus tolerances (MMC and LMC)
  • taking account of datum shift
  • tolerance stacks for assemblies
  • using the stack table to 'tune' the design