Sheet Metal Corner Relief Size

Relief height is generally kept greater than two times of sheet thickness plus bend radius.

Sheet metal corner relief size.

Assume the thickness is 1 mm a ratio to thickness equals to 4 will create a 4 mm per side square relief fig 5 for the obround relief the ratio to thickness options works in a similar manner. You can specify the corner relief shape for a 2 or 3 bend corner. Extrude hole size position guidelines creating an extruded hole using a punching process requires extreme pressure force. To eliminate this a bend relief is added so the edge of the sheet metal is perpendicular to the bend.

If you use the close 2 bend corner tool you can take the two corner types shown above and they will look like the closed corner shown below with the flat pattern to the right. For a 3 width ratio when the part is 1 mm in thickness the width of the slot will be 3 mm. If you need to remove the relief completely change its width to 0. Bend relief is provided at the end of bending edge in sheet metal design to avoid any crack tearing in the corner.

Smooth round and rip bend relief types can be applied only if the current bend relief type is rectangular. When sheet metal makes a transition from a bend to a flat surface or to another bend it tends to rip and tear. The way this one works is that you select the tool first found on the home tab sheet metal group. Use this document to choose values that are both manufacturable and meet your needs.

The corner tab lets you override default parameters in the sheet metal styles dialog box. A rip relief has a very small width of 0 001 thickness. It is most economical to use a single bend radius throughout the design but if necessary you can utilize multiple radii. Sheet metal parts with a minimum of 0 9mm to 20mm in thickness can be manufactured.

Not all options described are available or valid for each feature that shares this tab. You can also specify the relief size and whether to apply auto mitering. Bend radii minimum bend sizes.