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How to Use a Laser Cutting Machine to Cut High-quality Products
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How to Use a Laser Cutting Machine to Cut High-quality Products

Views: 0     Author: HanTenCNC     Publish Time: 2021-11-22      Origin: Site

laser cutting machine

In the laser cutting machine, there are several important skills that must be mastered for parts with higher cutting accuracy or greater thickness. Core position control is one of them. One of the benefits of laser cutting is the high energy density of the beam. Because the focal depth of the focusing lens is smaller, the diameter of the core spot is smaller. For high-quality cutting, the useful focal depth is also related to the lens diameter and the material to be cut.


Because the laser power density has a great influence on the cutting speed, the choice of lens focal length is an important issue. The spot size of the laser beam is directly proportional to the focal length of the lens. The spot size is very small after the beam is gathered by a short focal length lens, and the power density at the core is very high, which is very beneficial for material cutting; but its disadvantage is that the focal depth is very short. it is usually more effective for cutting thin materials at high speed. Because the long focal length lens has a wider focal depth, as long as it has sufficient power density, it is more suitable for cutting thick workpieces.


After deciding which focal length lens to use, the relative orientation of the core and the surface of the workpiece is particularly important to ensure the cutting quality. Because of the high power density at the core, in most environments, the core orientation is just at the surface of the workpiece during cutting, or slightly below the surface. In the entire cutting process, ensuring a constant relative position between the core and the workpiece is an important condition for achieving solid cutting quality. When the lens is heated due to poor cooling, the focal length changes, which requires timely adjustment of the core position.


When the core is in a suitable position, the slit is small, the efficiency is high, and the cutting speed can achieve good cutting results. In most applications, the beam core is adjusted to just under the nozzle. The distance between the nozzle and the surface of the workpiece is usually about 1.5mm.


In the process of laser utilization, whenever problems such as aggregation are encountered, there are three common easy steps to determine the core position:


(1) Printing method: The cutting head is moved from top to bottom, and laser beam printing is performed on the plastic plate, with the smaller printing diameter as the core.

(2) Inclined plate method: Use a plastic plate placed obliquely with the vertical axis to pull it horizontally, and look for the smaller part of the laser beam as the core.

(3) Blue spark method: Go to the missing nozzle, blow the atmosphere, and hit the pulse laser on the stainless steel plate to make the cutting head move from top to bottom until the blue spark is the core.


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