Parameter Programs
Sheet-Metal Design
When a sheet metal part is bent, it gets stretched. This stretch can be taken into account in sheet metal design by using different parameter programs. You can select the parameter program to be used for a certain part in the Sheet Metal Parameters dialog box.
The most typical parameter programs include the Bend Deduction Table (BendTable), DIN6935 and K-Factor. All the different parameter programs included in G4 are introduced in the following table:
| Parameter Program | Description |
|---|---|
| BendTable (Bend Deduction Table) | You can define both a v-opening and a tool radius for each bend. The possible values of v-opening and tool radius are read from the Bend Deduction Table database. In the bend deduction table there are material/thickness pairs, for which you can enter halves of bend deductions for different values of v-opening, tool radius and bend angle. The stretch values are calculated based on the halves of bend deductions. |
| DIN6935 | The stretch values are calculated in accordance with the standard DIN6935. |
| FeAlCuZn | |
| interpoRT | |
| K-Factor | You can define a K-Factor for each bend. The K-Factor is the relative position of the neutral plane within the sheet. K-Factor value 0.5 (neutral plane is at the center of the sheet) means that the sheet doesn’t stretch at all (same behavior as the parameter program NOSTRETCH). The stretch values are calculated based on the K-Factor values. |
| NEUTRAL | |
| NOSTRETCH | The stretches are not taken into account. |
| Rinner0 | |
| StainlessSteel | |
| Steel | |
| Tube |