tool die design metal stamping


 

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Geometric dimensioning and geometric tolerancing training


 

Part II : Introduction to
Maximum and Minimum metal condition
Geometric tolerancing
MMC , LMC


MMC , Maximum metal condition

Maximum material condition ( MMC ) may be considers as the condition when the part weights the most. The MMC of a shaft is at the maximum size of the tolerance and the MMC of the hole is at the minimum size of the hole. For instance, the MMC of the hole of Dia. 4+/- 0.02 mm is Dia. 3.98mm. MMC of shaft of Dia.10 +0/-0.005 mm is Dia. 10.00 mm.


 

 


 

LMC , Minimum metal condition

Least material condition ( LMC ) may be considers as the condition when the part weights the least. The LMC of a shaft is at the minimum size of the tolerance and the LMC of the hole is at the maximum size of the hole. For instance, the LMC of the hole Dia. 4+/- 0.02 is Dia. 4.02 mm. LMC of shaft Dia. 10+0/-0.005 is Dia. 9.995 mm.


 

 

Previous >> Part III . Geometric Tolerancing basics >>coming soon.