Five-axis technology is well-known in the aerospace and aerospace industries, such as impellers, blades, structural parts milling, etc. Five-axis linkage has become a mature and cutting-edge technology after years of application. This technology has also been widely used in special projects and products in recent years, such as five-axis laser processing technology. In recent years, laser technology has developed rapidly and has become the mainstream cutting technology. Because of its good cutting quality and precision, as well as unparalleled processing speed, the sheet industry generally believes that laser cutting is likely to replace stamping as the mainstream sheet metal processing technology in the future. Now, we will briefly introduce the application of five-axis laser cutting technology in automotive mold making.
1. The principle of laser cutting
The principle of laser cutting is: under the action of laser beam energy (in the oxygen-assisted cutting mechanism, plus the heat released by the exothermic reaction of oxygen sprayed with the metal reaching the ignition point), the surface of the material is heated rapidly (inductive range) Melting or vaporizing to thousands or even tens of thousands of degrees, as the vapor escaping and the molten object is blown away by the auxiliary high pressure gas (oxygen or nitrogen, etc.), the slit is produced.
In the actual operation of cutting, aerobic cutting and nitrogen cutting, under the premise of maintaining the same cutting precision, the oxygen cutting heat is large and fast, but the trimming has a brown, thin oxide layer; the nitrogen needs high pressure nitrogen, the speed is slow, the cost High, but the cut edge is non-oxidized, silver-gray, can be directly welded, commonly used to cut a class of stainless steel materials.
2. Advantages of five-axis laser processing technology in modern mold manufacturing
Laser processing has become an indispensable technology for modern automobile manufacturing. Instead of the traditional manual cutting + punching mold manufacturing method, it has become an advanced technology developed internationally. As we all know, in the process of making molds, trimming and punching processes have always been difficult in the mold manufacturing process, especially for large-scale automotive molds with complex structures such as beveling, oblique punching and tilting. The determination of the trimming line is very difficult if the traditional production method is used, and it needs to be repeated several times or even more than ten times, which brings great workload to the fitter and processing equipment, which not only raises the skill level of the fitter. Requirements, and will seriously affect the commissioning of the post-process mold. In reality, there are a lot of trimming and punching die cutting materials. In terms of cost, alloy steel, such as Cr12, Cr12MoV, etc., is used. If the traditional trimming die making method is used, it will inevitably be piled up several times. Welding, because the above materials are easy to crack during the process of multiple surfacing, and the inserts are scrapped, and have to be re-fed and reprocessed, so that not only the cycle will be delayed, but also the manufacturing cost of the mold will increase greatly. . If laser cutting technology is used, for the development of the automotive parts shown in Figure 1, after the successful drawing of the sample (shown in Figure 2), laser cutting can be used instead of trimming and punching. The trimming line shown above is cut, and the sample obtained by cutting is directly used for the next flanging process to test the mold, and the obtained final sample is compared with the gage. If there is a difference, the last repair is performed by the computer. The edge is trimmed and cut again until it is successful. The entire process saves two processes and completely changes the traditional single-line serial production method, which greatly shortens the process and reduces the cost of mold production. Based on the five-axis laser processing technology, it has such obvious advantages in the process of modern mold making. Therefore, it has been favored by many mold companies and has been widely and successfully applied.
Xi'an Jmlai Bio-Tech Co., Ltd. , https://www.jmlaisarms.com