Autodesk® Inventor® Tolerance Analysis is a CAD-embedded, 1D tolerance analysis software that helps you more clearly understand the impact of mechanical fit and performance based on the cumulative dimensional variation.

A 1D tolerance stackup means the distance being analyzed and all dimensions that contribute to the distance variation are acting in the same linear direction. Linear variation of the surfaces on either side of the stackup direction is considered; angular variation of the surfaces relative to each other is not considered. Sometimes the effects of angular variation are overlooked, so you should verify the analysis in 1D.

See the Inventor Tolerance Analysis Help for overview information, steps, and details about the workflows in Tolerance Analysis.

You can go to your Autodesk account to install the latest version of Tolerance Analysis. See the Tolerance Analysis Installation Help for details on how to install Tolerance Analysis and keep your software up to date.

About Tolerance Analysis

The purpose of tolerance design is to consider the allowable variation in each part to determine if the engineering requirements are met when the parts are assembled.

Tolerance Analysis helps you:

• Assure better fit by eliminating the need for hand calculations and spreadsheets
• Determine the optimum tolerances to keep your manufacturing costs down
• Increase the quality and finish of your products

Tolerance Analysis also helps you understand the cost impact of dimensional variation by providing you with information to help you:

• Reduce tolerance issues
• Generate meaningful summary reports

• Choose the appropriate analysis type:
  • Worst Case
  • Root Sum Squares (RSS)
  • Statistical
    • Cpk
    • Sigma
    • % Yield
    • DPMO (Defects Per Million Opportunities)

How do I get started?

Inventor Tolerance Analysis is available with your Product Design & Manufacturing (PDMC) subscription.

You can start using Inventor Tolerance Analysis by installing Tolerance Analysis from your Autodesk account. Next, learn more about the workflows in Tolerance Analysis by running your first analysis and then working your way through the Guided Tutorial.

To learn more about how to install Tolerance Analysis, subscribe to the Product Design & Manufacturing Collection, or create a network deployment, see the Tolerance Analysis Installation Help.

When to use Tolerance Analysis

Manufacturing tolerances have a significant impact on cost and quality. After adding 3D tolerance annotations or tolerance features to your Inventor model, use Tolerance Analysis to create the stackup and provide an interactive summary of the stackup results.

To learn more about the specific workflows in Tolerance Analysis, see the following topics in the Inventor Tolerance Analysis Help:

• About Tolerance Analysis
• To Define Tolerance Analysis Settings
• To Define Tolerance Stackups
• About 3D Effects Detected
• To Edit Tolerance Stackups
• To Work with Details and Summary Panels
• To Generate Reports and Import Export Data

The goal for optimizing tolerances is to create a cost-effective design for manufacturing.

Tolerance Analysis helps you identify potential manufacturing issues. Use the bidirectional associativity between your model tolerances and tolerance analysis to refine your tolerances and perform multiple iterations of the analysis to maintain the required quality and reduce cost.