With the development of model production and development, the cabin sections and components of stainless steel and titanium alloy structures are used more and more. The laser cutting and cutting and laser welding of such components have obvious process advantages. The importance of laser processing equipment for model development is increasingly apparent. In July, with hope and expectation, the CNC laser cutting machine successfully passed the factory evaluation and entered the hands of users at the same level of the company, starting the first battle of the model. On its debut, it became famous for its superior performance. It used to take half an hour to cut one workpiece by hand. Unexpectedly, with the help of the power of the laser cutting machine, 60 workpieces were cut in half an hour. The efficiency is doubled, and when sent to the welding room, it is found that the weld is more ideal than manual cutting.

　　If the first trial processing makes developers feel glory and dream, then the second trial processing makes them feel responsibility and pressure. After inputting various data and parameters, seemingly simple right triangle like parts can only cut out regular right angles, which is always separated by 0.3 degrees from the 89.7 degrees required by the design. The influencing factors of laser cutting process parameters are numerous and complex, which need to be explored and accumulated in production practice for a long time. In addition to quantifiable data such as focus position, auxiliary gas pressure and cutting speed, there are many tricks that can only be understood and unspeakable, such as judging whether the cutting process is healthy by listening to the cutting sound and looking at the cutting sparks; Observe the shape of the corner cutting surface to judge the focus position, etc. These accumulated process experience from actual operation is the core competitiveness to occupy the market.

　There's nothing to do with the model. What we want is nothing wrong. The value of civil product development lies in the close connection between the performance of products and the needs of users. After a brief entanglement, the production technicians and users conducted a three-day test at a high temperature of 38 ℃ around 0.3 ℃. Taking the cutting of titanium alloy plate less than 3mm, stainless steel plate less than 4mm and carbon steel plate less than 10mm as the goal, the parameter value matching test is carried out by using the orthogonal experiment method to ensure the accuracy and feasibility of the test on the premise of reducing the number of tests. Only by first obtaining a large number of cutting process parameter data from the experimental technology, analyzing and processing these limited and discrete processing conditions and process parameter data, and establishing the laser cutting process database, can any processing within the effective range automatically obtain the corresponding cutting process parameters, lay a foundation for the realization of laser cutting automation, and truly realize the turnkey project.

　　Hard work pays off. The joint efforts of the military and civil lines finally found the root of the problem. Through adjustment, further exploration and size compensation, the titanium alloy skin that meets the welding requirements was finally cut (titanium alloy skin has high strength and high temperature resistance, but it was not widely used in fighter aircraft manufacturing due to the difficult repair of skin processing accuracy and tolerance). At present, optical fiber laser cutting equipment has been applied to the precise cutting of model products, and has completed the blanking of several models of titanium alloy skin. The cutting quality is exquisite and the cutting precision is high. The first victory of the model also marks the successful transformation of the technology company from a manufacturer to a comprehensive system solution provider. With this powerful jump on the starting line, they are confident to go further and better on the road of Laser Exploration in the future.

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