Chapter 818: Success (Part 1)

When Professor Wang hurriedly finished the research at hand and rushed over, Guo Tailai had only the last two subsystems left to assemble. The second brother is still accompanying him, bringing the latest test system that has been rushed out, ready to be installed on the LOTDM at any time.

This system was produced sixteen years later than the Americans. According to Guo Tailai's design, the processing size is one-third larger than that of the American system, and the processing weight has also increased accordingly. The processing accuracy has been slightly improved, from the twenty nanometers of the American machine to the fifteen nanometers in the design.

The biggest change is the control system. The American model was completed in 1984. To put it bluntly, the CPU chip at that time was still at the stage of eight and sixteen digits. Compared with now, it is simply not the same. Not to mention the control efficiency, the operation here is also fully automatic digital control processing after the workpiece is fixed, which is advanced by many times.

Professor Wang and the others still had time to see Guo Tailai's final assembly stage. The second brother has successfully graduated after completing the control system of the batch of small machine tools in Guo Tailai's studio, but he did not immediately find a job and leave school after graduation, but continued to work with Professor Wang to develop this LODTM operating system together . Judging by the meaning of the second brother, the possibility of staying in school is extremely high.

The console is in another room separated by two anti-vibration grooves and three layers of insulating glass. You can see the machine operation over there, but the body temperature of someone here will not affect the operation room. In fact, it is impossible to directly enter the operation room from the console room. You have to go out two doors first, walk through another passage at the side of a common entrance, and walk through three doors to enter the processing area.

All the design of the factory area is to minimize the influence of the outside world. This is true whether it is vibration or temperature.

This LODTM is designed to process workpieces with a diameter of 2000 mm and a height of 600 mm. With such a large size, the expansion coefficient of optical glass is about 3.3 microns per meter. The workpiece size will change by 6.6 microns. The design processing accuracy of this system is fifteen nanometers, that is to say, the change of each degree Celsius is 440 times the processing accuracy. This also means that the temperature change during processing must not exceed 0.002 degrees.

The requirements for the constant temperature system are extremely harsh. This constant temperature system alone has more than 100 million orders. And before starting processing, after fixing the workpiece, I am afraid that everyone has to exit the processing area and wait at least 12 hours before starting processing, so as not to affect the processing accuracy due to the temperature difference caused by the human body staying.

The test system has been installed and Guo Tailai has also completed all the assembly work. Without fully considering the temperature effect, a test machining was carried out first. Just experiment with functionality this time, not accuracy.

In the past, if we wanted to process optical glass in China, we could only use grinding. Most industrial workers can't even imagine that optical glass is processed by a car, which is simply unbelievable.

The test processing was just the simplest lathe operation. Everyone stood nervously in the console room, watching the huge diamond lathe behind several layers of insulating glass start processing. Even Guo Tailai was excited to see the dazzling movements. .

Because it is only a trial processing and simple operation, it can be completed quickly. Guo Tailai couldn't wait to open several doors and enter the processing area. Although Guo Tailai can already see the processed size from a distance, he still wants to observe the state of the workpiece closely after processing.

The size of the test workpiece is not large, and the processing data is set to an integer diameter of 100 mm. When I just looked at it in the console room, this number basically does not change, after all, it is a constant temperature. But as soon as Guo Tailai and others entered it, or just opened the last door, Guo Tailai saw that the size of the diameter changed slightly by an extremely small number.

The micro-measurement system on the machine tool itself also gave readings, which also changed slightly. This measurement tool, which uses laser interference fringes to amplify the reading length, now gives almost the same data as what Guo Tailai observed visually. Of course, Guo Tailai has one more digit than the reading of the measurement system, and the change is more frequent.

Although this time it was only a test of the processing process, not the processing accuracy, without such a strict temperature control prelude, but even so, the processed glass cylinder was enough to surprise Professor Wang. The first time of non-strict test processing, the result of several measurements is higher than the processing accuracy of the ultra-large-format five-axis CNC machining center. If the processing is strictly followed the operating procedures, what will be the result?

In the second test, the accuracy test began. But this test was not as simple as Professor Wang's team plus Guo Tailai, and a few more people came to the scene to pay attention. In this factory with strict military control, everyone who can come in has a certain level. Guo Tailai even saw the official from the Ministry during the last technical verification.

This time the processing is a convex lens, a strictly calculated curved surface, which is realized by numerical control. Before the processing started, before these people came to observe on site, the piece of optical glass had been placed in the processing area for a full twenty hours.

Everyone was present, and were strictly restricted from moving, and could only sit in their seats to watch. There are two anti-vibration grooves between the console and the processing area, but the small ground vibrations when people walk around may still have an impact, so try to avoid this situation as much as possible.

When the various status readings in the processing area were completely normal, under the command of Professor Wang, the second brother started the processing process, and the precision diamond lathe started the first strict and regular processing operation.

A large amount of constant temperature liquid covered the processing surface, even Guo Tailai couldn't clearly see the size change at this moment. However, the precise readings of the system are still displayed on the screen in front of the console, changing steadily and precisely, processing to the set size little by little.

After the processing was completed, when all the constant-temperature liquid had drained away and the processed workpiece body was exposed, Guo Tailai watched from afar and let out a long breath. The processing size is completely qualified, and the precision also meets the design requirements.

When the workpiece was carefully moved to the measurement room and the temperature was kept constant for several hours to obtain the results, Professor Wang finally showed a satisfied smile on his face.

"Successful!" When the test of the superpower's heavy weapon was perfectly successful, Professor Wang only had these three words in his mouth.

Everyone had smiles on their faces, but everyone forcibly suppressed their cheers, for fear that loud noises would affect the measurement results over there. But there are only three words in everyone's mind at the moment, success!