Why Punch Die in Thick Turret Wear Faster

Why punch die in thick turret wear faster

1.Smaller punches will wear out faster than larger punches.

2.Sharp corners will show wear much sooner than straight or curved edges, particularly on punches. Thin sections will wear faster than thicker sections.

3.Correct clearance will result in longer tool life.

4.Lessening the impact and holding the sheet flat enables the punch to cut cleanly and will give better life to the punch.

5.Pulling the work piece from the punch evenly helps achieve easy stripping.

6.Mechanical damage of punches and dies is often mistaken as wear. Small clearance on one side of a punch and die will speed up wear at that point. It is important to regularly check turret alignment in order to prevent problems such as poor part quality and turret wear.

7.To create toughness and hardness required for long life, high speed steel (HSS) undergoes several heat treatments. The punches are double tempered to reach C62 Rockwell hardness. Hardened (59 Rockwell C) tool steel is the best material for dies. It correctly balances the need for maximum edge wear without breaking.

8.High punching speeds can, under certain conditions, generate enough frictional heat to make a punch softer. A softer punch will wear much faster.

9.A lubricant will greatly increase tool life.

10.Thicker material will cause faster punch wear.

11.Physical and mechanical characteristics of the work piece will greatly affect tool life.

12.Punches will generally wear faster than dies. Dies are less impacted by the factors described above than are punches.