Table 2 Dimensions of the punch with microridges
From: Applying a punch with microridges in multistage deep drawing processes
Dimension parameter | Fourth stage | Seventh stage |
|---|---|---|
Punch diameter, DP (mm) | 3.39 | 2.2 |
Punch nose radius, RP (mm) | 0.7 | 0.4 |
Ridge height, HR (mm) | 0.019 | 0.019 |
Ridge clearance/ridge number | ||
 LC (mm)/Nc | 0.09/3 | 0.135/18 |
 LC1 (mm)/– | 1.1/– | – |
 LC2 (mm)/Nc1 | 0.135/18 | – |
Ridge nose radius, RRN (mm) | 0.024 | 0.024 |
Ridge shoulder radius, RRS (mm) | 0.02 | 0.02 |
Ridge to punch nose distance, LF (mm) | 0.004 | 0.004 |