Press Tool (Cutting Process)

cutting process is consist of two parts :
1. penetration process
2. fracture process

all of that process is determined by clearance
and clearance consist of 3 parts :
1. proper clearance (normal)
2. excessive clearance (hard)

• big clearance
• big burr
• make big radius in cutting part
• small penetration
• make radius in scrap
  

3. insufficient clearance