Practical Applications and Calculation Methods

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# Practical Applications and Calculation Methods - PowerPoint PPT Presentation

12. Practical Applications and Calculation Methods. Calculate position tolerances when more than two parts are stacked in a floating fastener or fixed fastener application. Distribute the total available position tolerance between features to which position tolerances are applied.

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Practical Applications and Calculation Methods

Calculate position tolerances when more than two parts are stacked in a floating fastener or fixed fastener application.
• Distribute the total available position tolerance between features to which position tolerances are applied.
• Specify projected tolerance zones for fixed feature locations to prevent interference conditions.
• Determine the amount of tolerance accumulation in a simple assembly.
Properly use zero position tolerances at MMC to increase manufacturing freedom.
• Apply paper gaging techniques to determine if a produced part meets drawing requirements.
Zero Position Tolerance at MMC
• Zero tolerancing at MMC increases manufacturing freedom
• Clearance conditions must exist
• Located feature must have a size tolerance
• Lets the manufacturer choose how to allocate the tolerances
Paper Gaging Techniques
• Measure hole locations relative to datum reference frame
• Calculate coordinate variations
• Calculate diameter position variations
• Plot coordinate variation values