An example of this type of burr is given in Figure 3.1.3.3.4.ĬoncentricityUnless otherwise specified, the concentricity of adjacent machined elements shall be within 0.0005 inch total indicator reading (TIR) for items up to 3 inches in diameter, plus 0.0003 inch per inch of diameter above 3 inches. If this is evident at one or more locations on the lamination, it is indicating that the die is chipped or broken at those areas and the supplier is to be notified to repair the die prior to a subsequent order being filled.īurrs that extend into the slot or shaft hole areas are not allowed.
The maximum burr height allowed, if not specified on the drawing, shall be less than 0.002 inches. after anneal, if it is an annealed lamination. This applies to the finished lamination i.e. Surface irregularities such as bowing, oil-canning, spring back and warpage that exceed the tolerances given in Figure 3.1.3.3.2 are not allowed. The lamination thickness shall be uniform from side-to-side within 0.0005 inches. If no flatness tolerances are given on the drawing, the following are to be applied. LaminationSurfaceLamination surfaces shall be free of wrinkles, sharply defined depressions or ridges. Surface irregularities such as bowing, oil-canning, spring back, and warpage, that can be brought within acceptable limits during fabrication and assembly by the application of thumb pressure are acceptable provided the discrepant part or assembly, when installed, is positively retained in the correct position or shape, and functions as designed without impairing the function of mating parts or assemblies. SheetMetalSurfaceSheet metal surfaces shall-be free of wrinkles, sharply defined depressions or ridges, and shall be flat within the tolerances of the applicable dimensions of the drawing. MachinedSurfacesMachined surfaces shall be flat with the tolerances of the applicable linear dimensions of the drawing unless a specific flatness requirement is designated. Angles shown, as right angles shall be 90 within the general tolerance specified on the drawing except when squareness (perpendicularity) of a machined surface is a requirement. DimensionsandTolerancesApplication and interpretation of dimensions and tolerances shall be in accordance with ASME Y14.100 Engineering Drawing Practices and ASME Y14.5 Dimensioning and Tolerancing Standard for procured items.ĪnglesAll angles, other than 90 angles, shall be specified on the drawing.
0 kommentar(er)
