Clearance According to Oehler/Kaiser
4.1.1
Eqn. 1
| Clearance | uZ | = | mm |
| Sheet thickness | s0 | = | mm | |||
| Tensile strength | Rm | = | MPa | |||
| Limiting drawing ratio | β100 | = |
Calc 1
Clearance according to Oehler / Kaiser8
Tensile strengths of selected sheet metal materials can be used from the material table.
Werkstoff | Zug 1 β0 100 | Zug 2 β1 100 |
|---|---|---|
AlMg 3 weich | 2 | 1.5 |
AlMg 3 halbhart | 2 | 1.4 |
1.4301 | 2 | 1.25 |
DC 04 | 2 | 1.3 |
Tbl. 1 Limit drawing ratios β0 β1 without intermediate annealing | ||
The limiting drawing ratio β100 refers to a punch diameter of 100 mm. If there are deviations from this diameter, this ratio must be corrected in order to correctly calculate the maximum draw ratio.8
8
Oehler; Kaiser / Schnitt-, Stanz- und Ziehwerkzeuge / Springer Verlag / Berlin / 1993 / 7. Auflage