You add it to provide the information needed to create the cross break during manufacturing.
Purpose of cross break in sheet metal.
Sheet metal has a high strength to weight ratio and good malleability that can provide form and structure to products but because it is flat and bends easily it doesn t always work.
Crowning the deflection along a bend due to the tooling or brake not being able to apply equal tonnage along the bend.
How to bend sheet metal without a brake.
To form the operator marks the bend line on the sheet as a guide then lines it up with punch tip and performs a shallow bend.
Cross braking is a technique performed using a press brake.
We used the following equipment to produce this video.
The cross break is not a geometric entity and does not alter the geometry of the part.
A question we sometimes get in the solidworks sheet metal course is how to insert a 3d cross break.
A second bend is made across this initial one leaving an x impression on the sheet.
The cross break command lets you insert a graphical representation of a cross break in a sheet metal part.
How to bend sheet metal without a brake in 4 different methods with minimal or homemade tools.
A brake is a metalworking machine that allows the bending of sheet metal a cornice brake only allows for simple bends and creases while a box and pan brake also allows one to form box and pan shapes.
The crossing ridges stiffen the face of the metal and help prevent is from buckling under a load.
Cross break light bends added to sheet metal in order to stiffen its surface.
Bar fold http amzn to 2ebbi4w samsung note 2 i show you how to get a cross break in sheet metal with.
Cross breaks are most commonly in an x shape forming a slight pyramid shape in the metal without overly distorting it.
Crowning is controlled on modern brakes with internal hydraulic systems which can help equalize pressure.
It is also known as a bending machine or bending brake or in britain as a sheet metal folder or just a folder.