In this article, we will explain our new method for cutting metal, called "Helical Cutting" ("Metal cutting" in LDS) and highlight the differences between "Line Cutting" and "Helical Cutting."
Cutting Metal with "Line Cutting" Function
The "Line Cutting" is an upgraded version of the "Line Engraving" The cutting effect is achieved by increasing the power and depth settings used in line engraving. In "Line Cutting", the laser can penetrate and cut through the target object along the vector lines or paths you have set.
Cutting Metal with "Helical Cutting" Function
Helical cutting is a function designed for metal cutting. In this mode, the laser beam moves vertically in a helical motion while also moving horizontally along the vector line or path. This results in a wider cutting kerf compared to conventional cutting methods, which leads to a relatively slower cutting speed.
Besides, the helical movement of the laser beam effectively prevents striation formation and significantly improves the quality of the cut.
(a) Top view of helical cutting movement path
(b) Left view of kerf profile by helical cutting.
Why "Helical Cutting" Is Recommended for Metal Cutting?
Under high temperatures, metal melts and deforms, and when the temperature drops below the melting point, it quickly solidifies again.
If you use line cutting to cut metal, you might find that the cut metal cannot be removed after the machine stops. This happens because the metal re-solidifies and thermally deforms, causing the originally flat metal sheet to warp or arch.
The "Helical Cutting" function creates a larger cutting path, preventing the metal from re-solidifying together after melting. This method also helps reduce thermal deformation, improving the metal-cutting effect.