What are the issues to look into when buying a laser cutter for the first time?
Do you understand the laser cutting machine? With the development of laser cutting technology, laser cutting is used in a wider and wider range of fields, applicable to more and more materials. But for the novice to buy laser cutting machine often encountered problems, whether you can not hesitate to answer out?
- What is the working principle of laser cutting machine?
- Is it dangerous to operate a laser cutting machine?
- What are the aspects that affect the accuracy of laser cutting machine?
- How to find the focus of laser cutting machine?
- What types of lasers are there and what is the difference between them?
- What is the cutting thickness of laser cutting machine?
- What are the applications of laser cutting machine?
一、Laser cutting is the use of focused high power density laser beam irradiation of the workpiece, so that the irradiated place of the material rapidly melting, vaporisation, ablation or reach the ignition point, and at the same time borrowed and beam coaxial high-speed airflow blowing out of the molten material, through the numerical control mechanical system to move the spot irradiation position so as to achieve the cutting of the workpiece of a thermal cutting method.
二、 laser cutting machine operation is dangerous?
Laser cutting is a very environmentally friendly cutting method, generally speaking, there is no harm to the body. Compared with ion cutting, oxygen cutting, laser cutting produces less dust, weak light, noise. However, if not in accordance with the correct safety practices, can also cause personal injury to the user or damage to the machine.
- In the use of the machine is to beware of flammable materials. Some materials can not be cut on the laser cutting machine, including foam core, any PVC materials, highly reflective materials.
- During the working process of the machine, it is forbidden for the operator to leave without permission to avoid unnecessary losses. If you need to leave, you need to pause the machine.
- Do not stare at the laser processing operation. It is prohibited to observe the laser through binoculars, microscope, magnifying glass, etc.
- Do not store explosive and flammable items in the laser processing area.
三、 what are the factors affecting the accuracy of the laser cutting machine?
Laser cutting machine in the cutting process, there are many factors affecting the accuracy of laser cutting, some of which are determined by the equipment itself, such as the precision of the mechanical system, the degree of vibration of the worktable, the quality of the laser beam, auxiliary gases and nozzles, etc.; some of which are factors inherent in the material, such as the physical and chemical properties of the material, the material's reflectance, etc.; there are also a number of factors according to the specific object of processing as well as the user's requirements for quality and Make a choice, make corresponding adjustments to determine the relevant parameters, such as output power, focus position, cutting speed and auxiliary gas.
四、 How to find the focus of the laser cutting machine?
As the laser power density has a great influence on the cutting speed, the choice of focus position is particularly important. The spot size of the laser beam after gathering is directly proportional to the focal length of the lens. In the industrial field to determine the cutting focus of the following three simple methods:
- Printing method: so that the cutting head from the top to the bottom of the movement, in the plastic plate for laser beam printing, printing the smallest diameter for the focus.
- Inclined plate method: with the vertical axis and the vertical axis at an angle to put the plastic plate to make its horizontal pulling, looking for the laser beam at the smallest place for the focus.
- Blue spark method: remove the nozzle, blowing air, the pulsed laser on the stainless steel plate, so that the cutting head from the top to the bottom of the movement, until the largest blue spark for the focus.
Nowadays, many manufacturers' machines have realised auto focus. With the automatic focus function, can significantly improve the processing efficiency of the laser cutting machine: thick plate perforation time is significantly reduced; processing of different materials, different thickness of the workpiece, the machine can automatically adjust the focus quickly to the most appropriate position.
V. What are the types of lasers and what is the difference between them?
Currently used in laser processing and manufacturing lasers, mainly CO2 lasers, YAG lasers, and fibre lasers and so on. Among them, high-power CO2 lasers and YAG lasers are more widely used in confidential processing; fibre laser with optical fibre bit substrate, in the lowering of the threshold, oscillating wavelength range, wavelength tunable performance and so on, has obvious advantages, and has become the emerging technology in the field of laser.
Sixth, what are the applications of laser cutting machine?
Laser cutting machine with its wide cutting range, high cutting speed, narrow slit, good cutting quality, small heat-affected zone, processing flexibility to play and other advantages are widely used in automotive manufacturing, kitchenware industry, sheet metal processing, advertising industry, machinery manufacturing, chassis cabinets, lift manufacturing, fitness equipment and other industries. But the general laser cutting machine is mainly divided into metal cutting and non-metal cutting two kinds. Different laser cutting machine manufacturers produce different types of laser cutting machines with different focus. DMEC Machinery Equipment Co., Ltd, focuses on laser cutting and welding equipment. Produced laser cutting equipment and welding machine equipment received domestic and foreign customers consistently good