Grain structure in the metal sheet is critical for avoiding cracks in sheet metal parts with lugs or tabs that are cut on.
Bend relief sheet metal.
Improper bending of sheet metal can cause material flow problems in soft material and fracturing in hard materials.
Type smreliefcreate in the command bar.
In general a minimum bend relief is equal to the material thickness plus the inside bend radius.
Enter relief size by bend radius ratio or force bend reliefs auto.
Use the corner relief propertymanager to apply corner treatments to a folded sheet metal body that persist in the flattened state.
If it is ok for the metal to rip the minimum bend relief is zero.
Parent topic using sheet metal tools search corner reliefs and bend transitions in the solidworks knowledge base.
The flange which does not have relief will result in a greater amount of distortion or tearing of the adjacent material.
For example if you make a partial flange as above using all the defaults the software makes relief cuts at the end of the bends as shown to the right.
Synchronous sheet metal is pretty cool even cooler than just normal synchronous modeling if you ll excuse that word.
Lack of proper bend reliefs may cause tearing of the material due to localized stresses.
The gap between the bend and surrounding material allows us to shape the sheet in the press brake cleanly eliminating cracking and tearing.
This article looks at two different tips associated with ensuring you have high quality sheet metal in finished products.
You are also able to select to extend the bend relief in the opposite direction in the case of a flange for example illustrations below.
Select a hard edge bend face flange face or 3d solid entire model.
Refer to the chart for values for folder as well as various press brake tooling combinations.
The diagram shows one such mechanism.
One benefit of a bend relief is that it makes the part easier to produce.
To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend.
A bend relief creates space between the bent and unbent surfaces so that the edge of the sheet metal is perpendicular to the bend itself.
As per sheet metal design thumb rules the depth of bend relief should be greater than or equal to the inside bend radius of the bend and the width of the bend relief should be the same as the sheet metal thickness or more.
Use the minimum bend dimension values in the charts below for your minimum closeness of cutout to a bend.
Bend relief and collars near pierced areas strengthen sheet metal parts.
Choose create relief in the sheet metal menu.
Click the create relief tool button on the sheet metal ribbon tab.
