How to choose a CNC cutting machine

To choose a most suitable CNC cutting machine,we need to consider following factors: cutting range, cutting thickness, structure, cutting mode, torch height adjusting mode. They can also be assembled together on request.  

1.Cutting range

Cutting range refers to effective cutting width and length.

1).Take portable type as example,when you put our machine onto the plate,you should consider two aspects:

a,size of workpiece,you should make sure the machine can cut it for one time;b,width of plate.When the machine is put onto the plate,its effeetive cutting width should be as long as plate width,in order to reduce frequent movement of our portable cutting machine.

2).For other type,it is the same, Cutting range of our machine depends on specifications of plate to cut. You should make sure the machine can cut workpiece for one time.Otherwise,it is inconvenient to move our machine time and time again.For Gantry structure, to increase efficiency,you can put two pieces of plate breadthwise or lengthways at the same time.

2.Cutting mode

Cutting mode can be classified from different aspects:

Flame cutting,plasma cutting,Both flame&plasma cutting;

Dry-type plasma cutting, Under water plasma cutting;

CNC&Strip cutting machine(Linear cutting machine);

CNC Intersection cutting machine(Pipe cutting machine).

1),Flame &plasma cutting
Flame cutting: Traditional cutting mode,suitable for cutting low-medium carbon steel plate with perfect cutting quality.

Plasma cutting: suitable for cutting thin carbon steel, stainless steel,  nonferrous metal plate. Thus Its cutting speed is faster than falme cutting.

2), Intersection cutting 
To cut pipes, we have two met: One is CNC Intersection cutting machine; The other is Intersection cutting unit, which can be configurated onto Gantry structure CNC cutting machine. The former is for mass pipe intersection cutting, the latter for small-lot pipe cutting, to save space.

3. Cutting thickness

1). Flame Cutting can cut upto be 300mm. You can choose the different size cutting nozzle  to meet different cutting thickness.

2). Plasma Cutting can cut upto be 50mm(for stainless steel), and the cutting thickness will be decided by the plasma power souce and the plasma torch.

4. Structure

We have Portable, Small, Desktop(table) & Gantry  type.

Portable&Small type: Easy to move and install,save space,low cost.But effective cutting width is limited.

Desktop/Table type is integral structure, with quick and accurate emplacement, but cutting breadth is limited. 

Gantry type,good rigidity,cutting width can be from3 to 10m. But need high installation accuracy requirements and special plant area.

5.Torch height adjusting mode

No matter it is flame or plasma cutting, we all should make sure that the distance between torch and plate is most proper to get best cutting quality and prolong life of cutting nozzle.

Torch height adjusting mode:

1). Manual adjusting
Hand wheel through gear to drive rack of the torch to adjust torch height.

2).Electri adjusting
Press button, through adjusting motor to drice torch up and down.
Above mode need operator to adjust the torch height.

3). Capacitive height controller for flame cutting
On one hand, this device can automatically adjust torch height, to keep torch at a constant height;  Without this device, after preheat,  when we open high-pressure cutting oxygen, there will be Slag spatter. Thus it is easy to jam cutting nozzle. With this device,before we open high-pressure cutting oxygen,the torch will be mounted in advance. After Slag spatter ,torch will descend itself, thus to avoid mozzle jam.

4). Arc voltage height controller for plasma cutting

THC system will maintain a consistant torch height over all the peaks and valleys. It reads plasma voltage as a feedback mechanism to adjust the Z-axis height.  We usually suggest the customer to choose the arc voltage height controller or torch height controller(THC) when do plasma cutting.