Comparison of accuracy, speed, effect and stability of metal fiber laser cutting machine

Comparison of accuracy, speed, effect and stability of metal fiber laser cutting machine

Guide: Judging the performance of a metal fiber laser cutting machine, including cutting accuracy, speed, effect, and stability, are several ways to determine the cutting quality of a metal fiber laser cutting machine, and they are also some of the most concerned issues for buyers.

The cutting accuracy of metal fiber laser cutting machine

Metal fiber laser cutting machine has the advantages of high cutting accuracy, fast speed, no limitation of cutting pattern, low processing cost, etc., and it is gradually replacing traditional metal cutting process equipment. At present, the application range of metal fiber laser cutting machine is becoming wider and wider, and the cutting accuracy of metal fiber laser cutting machine is related to the processing technology, so it is also one of the most concerned issues for buyers. For the understanding of laser cutting accuracy, many people have certain misunderstandings. In fact, the cutting accuracy of the metal fiber laser cutting machine does not entirely depend on the equipment itself, but is affected by many factors. Now, let’s briefly understand which factors are most likely to affect the cutting accuracy of the metal fiber laser cutting machine.

1. The spot size of the laser beam after it passes through the focus. The smaller the spot after the laser beam is concentrated, the higher the cutting accuracy.
2. The positioning accuracy of the worktable determines the repeatability of the cutting. The higher the table accuracy, the higher the cutting accuracy.
3. The greater the thickness of the workpiece, the lower the accuracy and the greater the slit. Since the laser beam is tapered, the slit is also tapered. The slit is also stainless steel. The slit of 0.3mm stainless steel is much smaller than that of 2mm stainless steel.
4. The material of the workpiece has a certain influence on the laser cutting accuracy. In the same situation, stainless steel has higher cutting accuracy than aluminum, and the cut surface is smoother.

Cutting speed and cutting effect of metal fiber laser cutting machine

Laser cutting has no burrs, wrinkles, and high precision. For many electromechanical manufacturing industries, because modern CNC laser cutting systems controlled by computer programs can easily cut workpieces of different shapes and sizes, it is often preferred to punching and molding processes; despite the processing speed of metal fiber laser cutting machines It is slower than die punching, but it has no die consumption, no need to repair the die, and saves the time to replace the die, which saves processing costs and reduces production costs, so it is more cost-effective from an overall consideration. In the metal processing industry where the industrial manufacturing system accounts for a heavy share, many metal materials can be cut without deformation regardless of their hardness. However, for high-reflectivity materials such as gold, silver, copper and aluminum alloys, since they are also good heat transfer conductors, laser cutting is difficult, or even impossible.

Add auxiliary vapor suitable for the material to be cut during the laser cutting process. When steel is cut, oxygen is used as an auxiliary vapor to produce an exothermic chemical reaction oxidizing material with molten metal, and at the same time, it helps blow away the slag in the slit. Compressed air is used to cut polypropylene and other plastics, and inert vapor is used to cut flammable materials such as cotton and paper. The auxiliary vapor entering the nozzle can also cool the focusing lens, preventing smoke and dust from entering the lens holder to contaminate the lens and cause the lens to overheat. The choice of cutting speed when cutting metal fiber laser cutting machine is actually very important. The best cutting speed range can be selected according to the equipment description or determined by experiment. Due to the thickness of the material, the material is different, the melting point is high, and the thermal conductivity is large. As well as the surface tension after melting and other factors, the cutting speed also changes accordingly.

main performance:

1. A moderate increase in the cutting speed can improve the quality of the incision, that is, the incision is slightly narrower, the surface of the incision is flatter, and deformation can be reduced at the same time.
2. The cutting speed is too fast, so that the cutting line energy is lower than the required value. The jet in the cutting seam cannot quickly blow off the molten cutting melt immediately and form a large back drag, accompanied by cutting slag and cutting. The surface quality is degraded.
3. When the cutting speed is too low, because the cutting location is the anode of the plasma arc, in order to maintain the stability of the arc itself, the anode spot or anode area must find a place to conduct current near the slit closest to the arc, and it will flow to the jet at the same time. More heat is transferred in the radial direction, so that the incision becomes wider. The molten material on both sides of the incision gathers and solidifies at the bottom edge, forming dross that is not easy to clean, and the upper edge of the incision becomes rounded due to excessive heating and melting.
4. When the speed is extremely low, the arc may even be extinguished due to the wide cut. It can be seen that good cutting quality and cutting speed are inseparable. To

Stability of metal fiber laser cutting machine

How to measure whether the stable performance of a metal fiber laser cutting machine is good is a problem that many buyers are more concerned about. The common metal fiber laser cutting machine on the market is mainly composed of the main machine, guide rail, rack and pinion or ball screw, transmission mechanism and other components. Below we will make a simple analysis from these components.

The host is composed of a beam and two longitudinal end frames. The machine gantry is composed of an end frame and a cross beam. The cross beam adopts a rectangular square tube structure, which is tempered to remove internal stress, and has high strength and rigidity. Multiple mobile trolleys can be installed on the cross beam. The horizontal movement device adopts towline. The mechanical part realizes high-precision rack and pinion transmission. The guide rail is made of high-precision special imported guide rails. The precision-processed sliding guide rails are fastened on a concrete or steel frame foundation with a support, and are equipped with adjusting bolts for easy installation and Adjustment. The longitudinal drive system is installed in the longitudinal end frame, and the low-position design makes the transmission more reasonable and stable.

There are two front and rear rolling wheels at the bottom of the longitudinal end frame, which can smoothly roll along the guide rail. The front and rear ends are equipped with guide rail scrapers to ensure that there is no debris on the surface of the guide rail. Both sides of the bottom are equipped with guiding eccentric clamping wheels. Metal fiber laser cutting machine In order to ensure the guiding accuracy of the machine, the machine is equipped with high-strength linear guides (transverse transmission or high-precision precision grinding guides) in the horizontal transmission and torch lifting. The precision-machined gears and racks ensure the vertical and horizontal of the machine. Transmission accuracy and eliminate the gap.