Dimension, Tolerance and Assembles
Dimensions
Do not need to dimension hidden lines
Should not repeat the same dimension
Should be place outside the lines and not inside
Circles, Arc and holes
Holes- Located by the Centre line
arc- measure radius
Circle- Measure diameter
Tolerance
Limit- The absolute value of the upper and lower limit sizes
Bilateral-tolerance zone is distributed from the target value or true profile in both directions
Unlateral- In one direction
Fits
Clearence- Minimum size of the product
interference- maximum size of the product
Tolerance formula= upper limit - lower limit
Assemble
joints
Rigid- stay in place
Revolute- able to rotate