Tolerances are assigned to parts for manufacturing purposes, as boundaries for acceptable build.
No machine can hold dimensions precisely to the nominal value, so there must be acceptable degrees of variation. If a part is manufactured, but has dimensions that are out of tolerance, it is not a usable part according to the design intent. Tolerances can be applied to any dimension.
All dimensions must have a tolerance. Every feature on every manufactured part is subject to variation, therefore, the limits of allowable variation must be specified. Plus and minus tolerances may be applied directly to dimensions or applied from a general tolerance block or general note. For basic dimensions, geometric tolerances are indirectly applied in a related Feature Control Frame. The only exceptions are for dimensions marked as minimum, maximum, stock or reference.
We refere to DIN ISO 3302 – 1 standard
Dimensional tolerance
| # | Product | Norm | Radius | Hight |
|---|---|---|---|---|
| 1 | PU Bumper | DIN ISO 3302 – 1 | 20 ± 0.6 mm | 20 ± 0.6 mm |
| 2 | PU Bumper | DIN ISO 3302 – 1 | 16 ± 0.6 mm | 7 ± 0.3 mm |
| 3 | PU Bumper | DIN ISO 3302 – 1 | 80 ± 0.8 mm | 35 ± 0.6 mm |
