Research on Application of Fiber Laser Cutting Machine in Marking Processing of Aircraft Inspection Model
Based on the laser processing technology, in order to explore whether the fiber laser cutting machine can be used in the marking processing of aircraft inspection samples, according to the working principle of the fiber laser cutting machine, the influence of various process parameters on the marking effect has been systematically studied, and the more Optimal process parameters, and through a single process parameter test, to study the impact of each process parameter on the marking effect of the sample; the orthogonal test is used to optimize the process parameters to obtain the better process parameters of the fiber laser cutting machine, and finally to the marking The protective measures of the rear model are tested and analyzed. The research results show that the better parameters for processing using a fiber laser cutting machine are: font Times New Roman, marking height 6mm, speed 500mm/s, frequency 100KHz, without any protection; compared with manual marking, fiber laser The cutting machine performs aircraft inspection model marking processing, which greatly improves the processing accuracy and model use effect.
One of the most important inventions is the fiber laser cutting machine technology, and several other inventions such as atomic energy technology, semiconductor technology, and computer technology have now developed more maturely. So far, laser manufacturing technology and application technology are the two main directions of laser technology research. One of the most important research directions of laser application technology is fiber laser cutting machine technology. With the continuous advancement of fiber laser cutting machine technology, its application fields are also expanding, and the requirements for laser manufacturing equipment in the industrial market are also developing in the direction of integration, high efficiency, and miniaturization. For this reason, whether fiber laser cutting machine technology can be used to realize the marking of aircraft prototypes and improve the marking rate of prototypes remains to be tested and certified.
The fiber laser cutting machine technology is a new type of high-precision marking technology. Its working principle is to use a high-energy density laser to burn the surface of the object to be marked. The grooves are formed to leave a sexual pattern on the surface of the workpiece. The main process of using fiber laser cutting machine technology in marking aircraft sample processing
In order to explore whether fiber laser cutting machine can be applied to the processing marking of aircraft inspection template, from the paint surface material , Focal length, marking depth, scratch effect and other aspects of the operation test, due to the mutual superposition of the data parameters, therefore, through the orthogonal test method to systematically compare and analyze the marking results, To achieve the final effect of the project research.
Selection of paint surface material for aircraft model
In actual production, the model is mostly black (military aircraft), gray ( Civil aircraft) and yellow (chemical milling) paint finishes are the main ones. And cooperate with the red protective primer to realize the paint surface composition of the model. The test is mainly aimed at the black military aircraft model as the research object, and the influence of different process parameters on the marking effect of the model is observed through the experiment.
Performance test of various process parameters of fiber laser cutting machine
The focal length is to judge the working distance that makes the laser work more optimized at a certain distance. This test mainly It is to repeatedly test the distance from the outer edge of the laser head to the working surface, and according to the working distance of multiple tests, find out the better working distance that can achieve the better focusing effect and the fastest cutting effect. According to the corresponding database data, repeated comparisons and demonstrations are carried out by selecting the focal length between 140mm and 180mm, with each difference of 5mm as a set of test data. The test results show that its focusing effect presents a regular parabolic shape. When the working distance, that is, the focal length is at a minimum of 140mm and a larger value of 180mm, only a red dot appears on the working surface of the sample; and when the focal length is at 150mm and At around 170mm, there are obvious burn marks. Through the experimental test, the melting point of the burned paint surface is shown in Figure 2. From the analysis of the burning effect of the paint surface and primer under different conditions, only when the distance from the laser head to the working surface is 165mm, the laser focus is better , Work more efficiently. Therefore, through a large number of test results, it can be concluded that when the distance between the outer edge of the laser head and the working surface is 165mm, that is, the focal length is 165mm, the better focal length point is, and the marking effect on the sample plate is in a better state.
In the burning state, you can see that the marking effect of the template is achieved through the following 3 steps:
Step: The black paint surface is burned off to expose the red primer, and the burning effect is red; as shown in the area a in Figure 2.
The second step: continue to burn off the red primer to the surface of the steel plate. After burning, the effect will be white (divided into light white and white according to the exposure); as shown in Figure 2 As shown in area b
The third step: Finally, the laser continues to burn the steel plate, which is the oxidation structure formed on the surface of the steel plate, and the burning effect is black (different according to the exposure Black and black); as shown in area c in Figure 2.
White is easy to use and observe, black is wear-resistant. The test is defined at the critical point of white and burnt materials to light black, to ensure that the steel is directly oxidized after marking, and it does not require protection against wear. That is, the critical point between light black and white.
/