Turret Punch Press in Sheet Metal Fabrication

In this article we will review another important machine frequently used in sheet metal fabrication, that is the Turret punch. Turret punch (also known as a turret press) is a high-speed press machine equipped with a variety of standard punch tools. These tools cater for a wide range of hole shapes and sizes.  

CNC Turret punch machines are equipped with two turrets and each housing a set of punches and dies. In most machines, each turret is able to hold at least 40 different toolsets.  

The term “turret” refers to the holders which can be precisely programmed to rotate and load the required punch and die. Through its advanced control system, both turrets can be configured to move and rotate in sync to any specific position. 

The turret punch machine simulates the typical blanking or piercing process of a standard press machine for the relatively small and standard shapes. Whereas for much bigger and complex shapes, it is done by incrementally “punching” the shape of the material. In other words, instead of “punching” all the holes and shapes in a single shot, the turret punch machine utilises its advanced control system to precisely fabricate the metal parts in a series of high-speed strokes.  

So why not just stick to conventional press machine? 

As opposed to the standard press machine, turret punch eliminates the need for a high cost investment in product-specific tooling. Capitalising on its wide range of tool shapes and features, turret punch addresses these cost-related constraints that are commonly faced by manufacturers particularly for low-volume products.  

What about laser cut? Isn’t it more flexible than turret? 

When determining the best process for a low-volume product, manufacturers often consider between laser cut and turret punch as each have their own strengths and weaknesses.  

What about laser cut? Isn’t it more flexible than turret? 

When determining the best process for a low-volume product, manufacturers often consider between laser cut and turret punch as each have their own strengths and weaknesses.  

But when it comes to profiles with repeating straight-forward shapes and holes, turret punch is the obvious winner. Without the need to deal with additional costs in laser gases, ventilation and maintenance, turret punch supersedes the laser cut process through its high-speed punching mechanism and low setup cost. Not to mention that turret punch eliminates the risk of thermal distortion in thin material sheet due to laser heat exposure. 

As an experience manufacturer in high-precision sheet metal fabrication, we strive to the deliver the best services and solutions to our customers. Our in-house turret punch is capable of: 

  • Punching capacity: 30 ton 
  • Max sheet size: 1525x3050mm 
  • Max thickness: 6.35mm 
  • Nibbling speed: 600 hits/min 
  • Number of tool stations: 40 
  • Max ram stroke distance: 31mm 
  • Punching accuracy: +/- 0.1mm