CADOPTIX AI Capability
Tolerance Stack-up Analysis Software
Run worst-case and statistical stack-up to see how tolerances accumulate across an assembly — and identify the critical ones before parts reach production.
How the Stack Builds Up
See the Accumulation Before You Machine It.
Every part in an assembly carries a tolerance — stack-up shows what they add up to and which ones matter.
- Worst-case analysis — every dimension at its limit, maximum accumulation
- Statistical stack-up — tolerances as distributions, the likely range of variation
- Dimensional accumulation tracked across the whole assembly chain
- Critical tolerances identified by their contribution to variation
- Fit and interference issues found at the design stage
- Evidence for relaxing over-tight tolerances without guesswork
Fewer Surprises on the Floor
Rework Starts with Tolerances Nobody Checked.
- Parts can pass inspection individually and still fail to fit together
- Fit gaps exposed while tolerances can still be adjusted
- Critical tolerances ranked by their contribution to the stack
- Runs offline alongside DFM and inspection workflows
- Pairs with DFM analysis and GD&T inspection
FAQ
Common Questions.
What is tolerance stack-up analysis?
It calculates how individual part tolerances combine across an assembly, so teams see dimensional accumulation before parts are made.
What is the difference between worst-case and statistical stack-up?
Worst-case assumes every dimension sits at its limit; statistical assumes variation within tolerances and shows the more likely range — CADOPTIX AI supports both.
How does stack-up analysis reduce rework?
By identifying the tolerances that contribute most to an out-of-spec assembly, teams can tighten the critical ones and relax the rest.
Related Capabilities
Explore the CADOPTIX AI Platform.
See the full platform or jump to a capability:
Check Your Assembly Before You Build It.
Book a demo and walk through a stack-up on one of your own assemblies with our team.