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2D Drawings, Dimensions & Tolerance - Coggle Diagram
2D Drawings, Dimensions & Tolerance
Interference Fit
Parts are slightly larger than the hole
Tight fit
Requires force to assemble
Clearance Fit
Parts have space between them
Easy to assemble and move
Tolerances
Allowable variation in dimensions
Ensures parts fit together properly
Important for manufacturing accuracy
Dimensions in Drawings
Define the size and location of features
Ensure accurate manufacturing
9 types of dimensioning methods
Use datum dimensioning for better accuracy
Avoid repeating dimensions
Avoid dimensioning hidden lines
Keep dimension lines neat and clear
Do not draw dimensions through the object
Reduce tolerance build-up
Improve inspection and assembly accuracy