No mmc or lmc applicable.
How to note flatness sheet metal drawings.
I systematrically specify bend radii on my drawings and i include details showing what the bend corners look like before bending.
To put a flatness on sheet metal part will be hard to control because of the stock sheet metal gauge size tolerances are relatively nice and tight.
Gd t flatness is very straight forward.
A bend table lists propertied of all bends in a flat pattern view of a sheet metal part.
The boxed symbols can be read this surface must lie between two parallel planes spaced 0 2 apart in all views the right figure shows a possible actual part condition.
Toggling the visibility of bend region lines.
Bending factors affect the flat pattern.
Bend tags associate rows in a bend table with the view geometry.
To control the bow try using straightness applied to your sheet metal gauge thickness feature of size.
Although notes on each drawing will differ the first note on all sheet metal drawings that contain bends should be as follows.
I am apply my dimensions carefully so that they are unambiguous.
Creating drawings of flat patterns.
After you insert the bend table in the drawing bend tags are added to the selected drawing view automatically.
Bend tags are formatted by the dimension style and do not have a leader by default.
Dimensions given on a flat pattern are affected by several bending factors like k factor and bend radius during the 3d modeling stage.
I don t put any standard notes on my sheet metal drawings.
The flatness control c defines how much a part s surface may deviate from its perfect flat form.
It comes in useful if a feature is to be defined on a drawing that needs to be uniformly flat without tightening any other dimensions on the drawing.
Unless you need the part to have a flatness that is better than the sheet metal gauge tolerance.
Flat pattern drawing views can display bend line notes or bend tables.
Toggling the visibility of sheet metal bend notes.
Sheet metal bend line notes.
The left figure shows the drawing callout.
For door panels front panels interior panels and racks see document 10 1006 for information on adding a note regarding the implementation eps 121.
The flatness control c defines how much a surface on a real part may vary from the ideal flat plane.
Flatness is a form control.
Toggling the visibility of bend lines.
Minimum bend reliefs allowed.
The flat pattern drawing doesn t always list these factors.
I want stress relief radii.
Perfect flatness is when all points of a surface lie in the same plane.
Yes new in 2009 drawing callout.
