Focus affect the cutting precision of the cutting machine

The influence factors of cutting quality of the cutting machine - — Focus position adjustment, due to the power density had a great influence on cutting speed, the lens focal length selection is also an important problem. After focusing beam spot size and lens JiaoChangCheng is proportional to the beam by the short focal length lens focus after the spot size is small, the focus in the power density is very high, very favorable for material; But its drawback is short depth of focus adjustment allowance is small, generally applies to high-speed cutting thin materials. Because of the long focal length lens has the relatively wide depth of focus, as long as have the enough power density is sufficient to suitable for cutting thick workpiece.

what jiao long lens focus in determining the use and the relative position of the workpiece surface is particularly important to ensure the quality of cutting. Due to their high power density in focus, in most cases, the focus position just in cutting the workpiece surface or slightly below the surface. So in the whole cutting process to ensure focus and workpiece position relatively constant is important condition to obtain the stable cutting quality. Sometimes lenses work because of poor cooling and heat causing focal length change, this needs us timely adjust the focus location.

when focus is in the right position when the kerf width is small, high efficiency and cutting machine cutting speed can obtain good cutting result.

in most cases of application of beam focus should be adjusted to just under the nozzle, cutting machine nozzle and workpiece surface spacing of 1. About 5 mm.