Tolerancing Q: Virtual Condition & MMC Explained

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SUMMARY

The discussion centers on understanding the concepts of Virtual Condition and Maximum Material Condition (MMC) in geometric dimensioning and tolerancing (GD&T). The participant seeks clarification on how to apply these concepts to a specific problem involving dimension C and its relationship to the clevis dimension. The solution involves calculating the maximum and minimum values of dimension C to ensure that the clearance gap remains within specified limits, emphasizing the importance of arithmetic in solving GD&T problems.

PREREQUISITES
  • Understanding of Geometric Dimensioning and Tolerancing (GD&T)
  • Familiarity with Maximum Material Condition (MMC)
  • Basic arithmetic skills for dimensional calculations
  • Knowledge of clearance gap concepts in mechanical design
NEXT STEPS
  • Study the principles of Geometric Dimensioning and Tolerancing (GD&T)
  • Learn about Maximum Material Condition (MMC) and its applications
  • Explore arithmetic techniques for calculating tolerances in mechanical components
  • Review case studies on clearance gaps in mechanical assemblies
USEFUL FOR

Mechanical engineers, designers, and quality control professionals who need to understand and apply GD&T principles in their work.

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The Attempt at a Solution


I read about the virtual condition http://www.symphonytech.com/articles/GDT_Design.htm
but I don't really understand the approach used to solve the problem and was wondering if someone could explain the solution. where does the MMC come into the the solution?
 

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That article is not very helpful .

Your problem can be solved with simple arithmetic .

Just see if you can work out the maximum and minimum possible values of dimension C so that the clearance gap always stays within stated limits for any variation of the clevis dimension .
 

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