Frequently Asked Questions:


Below are some tables to help answer your questions regarding our tools and services.


Punching Force

KN - Length of edges to be cut x constant x material thickness x .345 (all units in mm).

TONS - Length of edges to be cut x constant x material thickness (all units in inches).

Constants: Mild steel - 22.3
  Stainless steel - 31.3
  Aluminium - 13.4
  Brass – 15.6
  Copper – 13.0

To convert millimetres to inches divide by 25.4
To convert inches to millimetres multiply by 25.4

 

Rotation

Rotation Diagram
(example shows 30°)

Front of Machine - Die View

This key location matches Amada's turret punch press programming method

     

Coatings

Punch life can be greatly increased by choosing the correct coating for the material to be pierced. Typical coatings are detailed below:

TiN (Titanium Nitride)

The most common form of coating.
Bright gold in colour, it is used as a good general purpose coating.

TiCN (Titanium Carbo Nitride)

Suitable for more demanding situations than TiN and is a blue-grey colour. Used for stainless steel applications.

Chromium Nitride (CrN)

Best used as a coating for non ferrous applications.

 

Maintenance

For a continued and trouble-free life we advise you to keep tools well lubricated with regular inspections. To achieve optimum productivity from your tooling you should regrind once you have a 0.1mm radius on the cutting edge.

Good grinding techniques are essential; use a properly dressed wheel and remove only small amounts. Ensure an adequate supply of coolant during the process as over-heating could affect the hardness of the tool, reducing its life.

Allowing tools to become badly worn aggravates the problems resulting in increasingly rapid wear.

     

Service and Technical Help

Our technical sales staff are always there to help you to plan, design or even submit quotations.

Irrespective of location, and for whatever reason, we promise that should you request our help, such that our attendance is necessary, we will visit your works by the end of the following working day – free of charge.

     

SUGGESTED DIE CLEARANCE CHART

Material Gauge
Mild Steel
Aluminium
Copper
Brass
Stainless
Steel
Hot Rolled
Steel
0.6mm/24swg
0.10
0.10
0.10
0.10
0.20
0.15
0.7mm/22swg
0.10
0.10
0.10
0.10
0.20
0.15
1.0mm/20swg
0.15
0.10
0.10
0.10
0.20
0.20
1.2mm/18swg
0.20
0.12
0.15
0.12
0.24
0.20
1.5mm/16swg
0.25
0.15
0.20
0.15
0.30
0.25
2.0mm/14swg
0.30
0.20
0.25
0.20
0.40
0.35
2.5mm/12swg
0.35
0.25
0.30
0.25
0.50
0.40
3.0mm/10swg
0.40
0.30
0.35
0.30
0.60
0.50
4.0mm
0.80
0.60
0.70
0.70
1.00
0.80
5.0mm
1.00
0.75
0.80
0.80
1.25
1.20
6.0mm
1.20
0.90
1.00
1.00
1.50
1.50

Note: Clearances shown are TOTAL and not clearance per side. All dimensions in mm.

The clearance chart shown above is of commonly accepted clearance values to which we would normally work. However, certain applications may require slight changes to these values and our Technical Support Engineers are always available to offer their recommendations.