In the authoritative report recently released by China military media, a key 6,000-ton large-scale equipment was mentioned. The report pointed out that the hull of the new 10,000-ton destroyer used traditional technology in the initial stage of construction, but because the processing and molding of special materials are very difficult, if it continues to be built like this, the overall construction progress will be greatly affected. At present, there is only one 10,000-ton destroyer in China, namely the Type 055 destroyer, so the report must refer to this type of warship.
When encountering difficulties, the competent construction department was not discouraged, but boldly adopted new equipment and new technology, and finally solved the problem. The new equipment adopted was a 6000-ton three-dimensional CNC bending machine. This three-dimensional CNC bending machine is a dual-purpose product, so it is easy to find a detailed introduction in the public information. The giant used to process the hull structure material of destroyer 055 is SKWB-2500 3D CNC bending machine.
Before talking about SKWB-2500 3D CNC bending machine, it is necessary to know the processing technology of 3D curved ship plate. This process is very important, because the processing quality of the hull outer plate will directly affect the construction quality of the ship, and its processing efficiency will affect the whole construction cycle. These two points are easy to understand. A warship is a ship first, and it is not of very high quality, so no amount of electronic equipment and weapons piled on it can cover up the most important short board. What is the combat effectiveness of a ship that sinks at a touch? The high processing efficiency of the hull outer plate will naturally shorten the construction period, which is of great help to Xiaojiaozi.
The forming technology of three-dimensional curved ship plate includes mechanical transverse pressing and water-fire longitudinal bending (hereinafter referred to as water-fire bending plate) processing, manual mechanical stamping or rolling processing. Among these methods, the commonly used method in China is water-fire bending, while European shipyards mostly use manual mechanical stamping and rolling. No matter which processing method, there are some shortcomings, such as very complicated operation technology, extremely low processing efficiency, poor quality stability, high labor intensity and difficult implementation of standardized technological procedures. Another disadvantage of these methods is that they require highly skilled workers.
Based on the above reasons, China R&D personnel, after long-term tracking and active research, finally understood the automatic forming technology of three-dimensional curved ship plate cold bending and developed SKWB-2500 three-dimensional numerical control bending machine. Not only that, it is also the world's first large-scale three-dimensional CNC bending machine for complex curved ship plates, which was put into full use in 20 16, and can process three-dimensional curved ship plates with a maximum width of 2500 mm and unlimited length.
The main components of SKWB-2500 three-dimensional CNC bending machine are: four-column press, lower ram group driven by servo motor, upper ram group driven by hydraulic cylinder, push-pull die mechanism, feeding and discharging mechanism, three-dimensional laser or "magnetic" measuring device, automatic tuning system, hydraulic system and control system. Although SKWB-2500 3D CNC bending machine is a 6000-ton behemoth, it needs very few operators. According to the authoritative media of the military, such a large equipment only needs a few people to operate, and the degree of automation is extremely high.
Except for loading and unloading, the whole bending process is automatically controlled by this heavy equipment. The whole equipment is highly intelligent, and has the functions of real-time display of three-dimensional curved surface graphics, precision comparison between the actually formed curved surface and the expected ideal curved surface, and error display, and can give feedback according to the actual machining situation, which is beneficial to real-time correction and control through calculation. Not only that, but also patented technologies such as movable square indenter and non-opposite pressing mode of upper and lower dies are adopted, which almost perfectly eliminates the indentation and wrinkle in the sheet metal stamping process. SKWB-2500 3D CNC bending machine has parallel shape adjustment function based on CAN bus, which can realize shape adjustment very quickly.
In addition to the above advantages, SKWB-2500 three-dimensional CNC bending machine also adopts transverse upper die, which is very convenient for real-time measurement, feeding and daily maintenance, so it has good operability and maintainability. In terms of efficiency, the efficiency of this giant device has been greatly improved. According to the statistics of users, the speed of SKWB-2500 3D CNC bending machine is at least 5 times higher than that of hydrothermal bending process when processing the same 3D curved ship plate. Moreover, the higher the complexity of the three-dimensional curved ship plate, the faster the speed will increase. Finally, SKWB-2500 3D CNC bending machine has better machining stability and higher machining accuracy.
It is precisely because of the use of the world's first large-scale three-dimensional numerical control bending machine for complex curved ship plates that the processing speed, accuracy and quality of the hull plate of Type 055 destroyer have been greatly improved. Judging from the photos and news released by the media, this 10,000-ton destroyer has been built in batches, and at least eight ships have been built in the first batch. SKWB-2500 three-dimensional CNC bending machine has made great contribution to the transmission of 10,000 tons of driving energy.