Sheet Metal Angle Tolerance

Comprehensive resource of fabrication tolerances and dimensional variation guidelines for sheet metal manufacturing and fabrication.

Sheet metal angle tolerance.

Sheet metal fabrication resources blog and discussion forum. I have creates a drawing of a sheet metal part. The symbol means plus or minus meaning the angle can be bent both over or under the desired angle and still be functional. A 1 degree tolerance on all bend angles.

Commonly used bends include v bend z bend offset bend and hemming bend etc. As per design requirements and manufacturing capability tolerance class is defined. For sheet metal parts iso 2768 mk is used. This is rediculously tight tolerance for a bend angle and am being told to change it.

Bend angle 1 degree. 0 125 to 0 3125 excl 0 002 stainless steel. For sheet metal parts iso 27 68 mk is used. Sheet metal parts with a minimum of 0 9mm to 20mm in thickness can be manufactured.

Generally 1 0 is typical and most manufacturers will be able to hold this. When designing parts for laser cutting one should not make holes smaller than the thickness of the material. Fabrication tolerances for dimensional variance in sheet metal and machined parts. Sheet metal guage tolerances.

Geometrical tolerances for features without individual tolerance indications. Tolerance class is defined as per design requirements and manufacturing capability. The sheet metal bending height should be at least 2 times the thickness of the sheet metal plus the bending radius that is h 2t r. Thereby forming a certain angle and curvature shape.

The tolerances in the table and attachments reflect current manufacturing practices and commercial standards and are not representative of the manufacturer s standard gauge which has no inherent tolerances. 1989 general tolerances part 2. I agree but apperently there is no way to change the precision in solidworks other than overriding the text unless i am missing something. Bends in sheet metal are manufactured using sheet metal brakes.

In the above example m and k has defined the tolerance. Bend length 0 010 0 25mm. And for machined components iso 27 68 fh can be used. General tolerance iso 2768 does not specify where to use these tolerances.

And for machined components iso 2768 fh can be used. Angle tolerances are typically denoted by x xx. The bend notes default to two decimal point precision.