Table 1 Die design parameters and their values
From: Applying a punch with microridges in multistage deep drawing processes
| Â | Original/modified design values | ||||
|---|---|---|---|---|---|
Punch diameter (mm) | Punch nose radius (mm) | Lower die shoulder radius (mm) | Clearance (mm) | Drawing ratio (%) | |
First stage | 5.2/5.2 | 1.7/1.7 | 3.0/3.0 | 0.2/0.2 | 49.52/49.52 |
Second stage | 4.7/4.7 | 1.1/1.1 | 3.0/3.0 | 0.165/0.165 | 90.38/90.38 |
Third stage | 3.98/– | 0.9/– | 3.0/– | 0.165/– | 84.68/– |
Fourth stage | 3.39/3.39 | 0.7/0.7 | 3.0/3.0 | 0.165/0.165 | 85.18/72.13 |
Fifth stage | 2.88/3.05 | 0.6/0.6 | 3.0/3.0 | 0.165/0.165 | 84.96/89.97 |
Sixth stage | 2.45/– | 0.5/– | 3.0/– | 0.165/– | 85.07/– |
Seventh | 2.2/2.2 | 0.4/0.4 | 3.0/3.0 | 0.16/0.16 | 89.80/72.13 |
Eighth | 2.0/2.0 | 0.35/0.35 | 3.0/3.0 | 0.16/0.16 | 90.91/90.91 |