Cutting process: Shears, Slitting Shears and Nibblers
For cutting, we offer the option of working with shears, slitting shears or nibblers. Learn more about the different advantages here.
Shears
The shearing principle enables material deformation without material loss through chips. During cutting, the upper blade moves towards the fixed lower blade. This exerts high tension on the material being processed, and a so-called advancing crack.
In shearing, the material is cut at high speed and the total shear force of the moving blade is exerted on the fixed blade.
Advantages:
- Flexible in curves
- Fast, accurate cutting
- Long tool life
- Chip-free cutting
- Good cut quality
Slitting shears
When using slitting shears there is no deformation of the metal. In contrast with "traditional" shears, slitting shears have two cutting blades located next to one another. The blade performs a pivoting motion in the cutting gap and the cut is made during the upwards movement. The scrap material rolls up in a spiral form.
For slitting shears, we have a variety of cutters for a number of different applications. A fine, slim blade increases flexibility in curves. A robust blade, on the other hand, is very well-suited for straight coil cuts.
Advantages:
- Distortion-free cutting
- Good cut quality
- Fast working speed
Nibblers
Nibbling is a cold process with no heat influence. In comparison with thermal or other mechanical processes, in nibbling there are no dust, gas or smoke emissions. The material punched out falls out in the form of chips. A punch and die are used.
The nibbling principle is based on the cutting of plate-shaped parts with a fast succession of punching strokes. The up and down movement of the punch nibbles a cut into the sheet metal. The entire punching force of the punch is borne by the die holder. They are extremely robust and made of heavy-duty steel.
Different punches
- Hollow round punches are used for material up to 0.14 inches thick. This allows the machine to turn on a single point.
- Rectangular punches are used for material over 0.14 inches thick. The narrow punch form allows a high degree of versatility
Advantages:
- Distortion and emission-free cuts
- High cutting speed
- Clear view of the work surface
- Low force feed, regardless of sheet thickness