Views: 70 Author: Site Editor Publish Time: 08-26-2021 Origin: Site
With the popularization and application of laser cutting machines, the deformation of the cut metal due to laser cutting opportunities has become one of the common problems. This is because the metal laser cutting machine uses high temperature to fuse the material, so uneven heating may occur, resulting in thermal deformation of the material. How to solve the thermal deformation problem of laser cutting machine cutting metal? We must first find out the cause of thermal deformation, and then prescribe the right medicine. The following Leapion laser tells you how to solve the thermal deformation problem.
1. Check whether the reference setting of the laser cutting machine is correct, such as: Is it caused by the lack of adjustment of the laser cutting machine's dimming?
2. Different cutting materials have different cutting effects, because the reflective characteristics and metal characteristics of the raw materials may affect the cutting effect.
For example: If you are cutting thin metal plates, laser cutting belongs to thermal cutting, and thermal cutting will definitely be deformed. Although the laser cutting machine has relatively small thermal deformation compared to the flame cutting machine and the plasma cutting machine. But it is still deformed.
3. The size of the thermal deformation has a lot to do with the cutting material, the shape of the part, the cutting thickness, and the laser processing technology. The shape of the part determines the size of the deformation to a large extent.
For example: cutting a square, the thermal deformation will not be too large. But if you cut a long and narrow rectangle (10*2000mm), the deformation will definitely be great. The reason for the deformation is due to uneven heating, which causes thermal expansion and contraction to cause the switch to change.
After selecting the relevant methods to reduce the heat source, the thermal deformation of the metal laser cutting machine will be significantly improved.
For example, for a CNC plasma cutting machine tool, a more effective method is to forcibly cool the heating part of the CNC plasma cutting machine lathe, or heat it in the low temperature part of the machine tool to make the temperature of the machine tool uniform, which can reduce the cause The warpage through the temperature difference.
But it is extremely difficult to fundamentally solve this problem, so the only way to reduce the influence of the heat source is to control the temperature rise.
Because of the up-and-down correspondence, the main axis of the double-column unit after the heat absorption produces a vertical angle of translation, and the deformation of the other angles is small, and the axis movement of the vertical angle can be easily dealt with by a calibration amount of a coordinate.
1) Under the same heating conditions, the metal laser cutting machine lathe unit also has a great influence on the thermal deformation. The structure type should also minimize the distance between the center of the main shaft and the main shaft to the ground to reduce the total amount of thermal deformation;
2) In addition, the temperature of the front and back of the spindle box should be the same to prevent the spindle from tilting after deformation. This can reduce the influence of the thermal deformation of the spindle on the machining diameter to a low degree.
The thermal deformation of the shaft occurs at the vertical angle of the cutting tool. For example, the single-column unit used in the metal laser cutting machine CNC machine tool may be replaced by the double-column unit.
We should learn more about this knowledge, standardize control, and reduce the impact of possible thermal deformation.
Laser cutting can cause deformation of the cut metal. This problem is very common, so don't be too alarmed. In fact, in the process of using a laser cutting machine, thermal cutting will definitely release heat. It can only be said to reduce the occurrence of this situation. For more professional questions about laser cutting machines, welcome to consult Leapion Laser, Leapion Laser 7×24 hours online service!
