Angle Tolerance Sheet Metal

I have creates a drawing of a sheet metal part.

Angle tolerance sheet metal.

This is rediculously tight tolerance for a bend angle and am being told to change it. Bending is a stamping process that uses pressure to force the material to plastically deform. And for machined components iso 2768 fh can be used. As per design requirements and manufacturing capability tolerance class is defined.

In the above example m and k has defined the tolerance. General tolerance iso 2768 does not specify where to use these tolerances. Bend length 0 010 0 25mm. 1989 general tolerances part 2.

Press brake bend length 0 010 0 25mm per bend for controlled dimension. Thereby forming a certain angle and curvature shape. As boden explained when designing parts for a sheet metal application you must take a realistic view of the material characteristics consistency of makeup and temper yield strength tensile strength and grain direction just to name a few variables. General tolerance iso 2768 does not specify where to use these tolerances.

Protocase takes great care to manufacture your electronic enclosures parts and components as accurately as possible. Figure 2 ram deflection causes a canoe effect when the part s internal bend angle is greater in the center than at the sides. Typically this information is located in the title block of a drawing. I agree but apperently there is no way to change the precision in solidworks other than overriding the text unless i am missing something.

And for machined components iso 27 68 fh can be used. 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. Sheet metal with an average yield strength of 41 000 psi can be sold as a36 steel even though it is 13 percent harder than 36 000 psi steel. Bend angle 1 degree.

Tolerance class is defined as per design requirements and manufacturing capability. The sheet metal itself. Folder bend length 0 010 0 25mm per bend for controlled dimension. Commonly used bends include v bend z bend offset bend and hemming bend etc.

Galvanized steel angle is also coated in zinc which adds superior corrosion resistance over standard carbon steel angle. For sheet metal parts iso 2768 mk is used. Galvanized steel angle widely popular galvanized steel angle also known as angle iron is used for numerous types of applications. Its 90 angled shape adds an abundance of strength and rigidity to numerous projects.

For sheet metal parts iso 27 68 mk is used. The bend notes default to two decimal point precision. Still one huge variable remains.