Fixed Fastener Assembly Without Float

To evaluate the worst case scenario without considering fastener float:

  1. Open the assembly to evaluate.
  2. Create a TolAnalyst study and navigate to the Result PropertyManager.
  3. Under Analysis Parameters, clear Float fasteners and pins.
    In this example, under Analysis Summary, the Min is 48.5 and the Max is 51.5, for a total range of 3mm.
To achieve the worst case minimum, given the top plate's threaded hole diameter 0.5 position tolerance, TolAnalyst simulates the 105 basic dimension between the threaded holes at 104.5.
For the axle supports, when TolAnalyst simulates the clearance holes at their LMC size of 11.5, the resultant position tolerance is 1.0, enabling the 27.5 basic dimension from datum B to the holes to be calculated at 28.

Assembling the parts with the fastener float option cleared, TolAnalyst aligns the clearance holes in the axle supports concentrically with the threaded holes in the top plate, resulting in a worst case minimum of 48.5.