"This is in front of the four-axis machining center assembly area, mainly used for processing some high-precision aerospace products structural parts, on the basis of the three coordinates added around the X-axis rotation of the four-axis axis, the next step, is the Z-axis swing of the fifth axis...... "The four-axis machining center is very different from the three-axis machining center.

The main thing is that the four-axis machining center has an additional table that can rotate the machined parts. In fact, it is also a simple four-axis machining center.

The real four-axis machining center is also an absolute strategic material in China, which is difficult to produce and the cost is much higher than that of foreign countries. This has a significant impact on the accuracy of aerospace and advanced precision manufacturing parts. For example, the ordinary three-axis machining center, when processing parts, can only process one side of the part, that is, the face perpendicular to the spindle, but after the four-axis machining center, due to the existence of the rotary worktable, the parts can completely complete the processing of a surface, the rotary worktable rotates 90 degrees to process another surface or rotates 180 degrees to process the opposite of the machined surface.

In this way, it can effectively ensure that most of the processing of the armor is completed at one time, and the spatial position accuracy of the parts can be guaranteed.

In the aerospace industry, because many parts require very precise spatial position, ordinary processing methods can not effectively guarantee, even if the master relies on feeling and experience with the assistance of various top testing equipment, it is not as precise as the machine.

Missiles, spaceships, top-of-the-line fighters are difficult to produce and expensive to manufacture. It is because at the time of manufacturing, the requirements for the entire cutting-edge manufacturing field are too high.

Some things cannot be processed by a master with technology and experience.

In particular, some heterosexual structures are ultra-precise. Ultra-complex structural parts!

Liu Yijiu's republic was unable to develop in this area, so for a long time, the technological development in the aerospace field was very slow.

If you follow the Soviet model, the cost of manufacturing will be three to four times more expensive than that made with CNC machines. Otherwise, it would not have been possible for US imperialism to bring down the Soviet Union with just one space war plan.

"This is a simple four-axis, on the fourth axis, don't you have a complete technical form?" Karloff knows these devices very well.

China's achievements in CNC machine tools. It really shocked them.

This is absolutely impossible to be researched and imitated after the United States gave China dozens of CNC machine tools a few years ago for the Chinese to disassemble.

Even the four large-scale industrial machine tools exported by Japan to the Soviet Union are not so advanced in terms of precision - because those four CNC machine tools are processed by using the method of perforating and programming paper tape that has been gradually eliminated!

"It's really an easy fourth axis. Since our control software couldn't keep up, even though only a fourth axis was added. But the complexity of the entire control software has increased by at least five times. At present, aerospace and even ordinary weapons and equipment manufacturing need such CNC machine tools, and our domestic economy is not good, and the country has no money. So you have to save money. If you guys need it. We are fully capable of providing you with a complete form of four-axis machining center......" Liu Yijiu did not feel that the things here were a little simple for the Soviets.

The control system is the key.

This is the fourth axis formed by the rotary axis controlled by the PMC module, and the system required is only to let the simple rotary table rotate according to the needs of the program in the machining process of the other three axes, and even encounter four axes and four linkages, that is, the three axes are displaced at the same time and the fourth axis needs to rotate very rarely, and it is usually four axes and three linkages.

For the processing process, the requirements for the control method are much simpler.

"There's no way to machine heavy parts! Liu, what we need is a fourth axis that can machine heavy parts. If there is such a deal, I think there is a deal between us. It's going to be easier! Karloff said to Liu Yijiu.

This simple four-axis machining center can only be used to make some small complex parts, and it is impossible to high-precision machining of large special-shaped parts.

Especially when processing some relatively large parts, due to the existence of a simple workbench, it will effectively occupy the processing area and reduce the size range of the processed parts.

The CNC machine tool bought by the Soviets in Japan is a special CNC machine tool for processing large ship propulsion propellers, and each blade has a processing axis on it, so that several blades can be processed at the same time, which will make the size of the processing consistent, and the amount of deformation will be much smaller, which is not a universal type.

"No problem, we can provide it to you, but the price is at least two million dollars a piece!"

At that time, when the Republic of China was pushed to the Berlin Wall, Europe ignored China and imported several four-axis machining centers from the Federal Republic of Germany, and the price of each was two million US dollars!

It was the first time that China bought an advanced multi-axis linkage CNC machine tool.

It is precisely because of those four-axis linkage CNC machine tools that the progress of the Republic's intercontinental missile research is very fast, and even promotes the birth of the Thunder Dragon fighter and the early service of the Jian-10.

Now to sell to the USSR, even if the dollar in the eighties was worth more than the nineties, and it cost him two million, it would be very authentic.

Who called the Soviets didn't!

Who called the Soviets desperately needed?

"Isn't that too high?"

"It's not high, you can look at the sample first, and then look at the processing strength." Liu Yijiu was not at all worried that the Soviets were too expensive.

It's not a problem for him to ask for these things like the Japanese.

Lao Maozi's habit is very bad, that is, the price is cut outrageously, and when the price is quoted, it will often only bargain for one to two percent, and finally the transaction can be made at a price of fifty percent, which will make those who do business with them laugh.

Liu Yijiu didn't bother to grind the price slowly with them.

Let them see the machining of the four-axis machining center first, and then negotiate the price with them.

We rely on technology to speak!

"Do you have one here?"

"No, at our Hongfeng Machinery Factory." Liu Yijiu shook his head.

This is only used to produce CNC machine tools.

The key core components of CNC machine tools are produced in the mountains and then transported to Chengdu by freight trains that run once a day.

Production costs are not a problem for most Chinese enterprises now, as long as they can produce products that are scarce in the market, they can have huge profits beyond imagination.

Hongfeng Machinery Factory is actually the Rongcheng Air Force No. 4 Station Factory allocated to the Ninth Academy.

Originally mainly used for the maintenance of fighters, it has a certain mechanical processing capacity, mainly produces some vehicles for the maintenance and support of the airport runway, as well as the maintenance of some simple faults of fighters, as the Taipingsi Airport was abandoned by the military, this side gradually began to decline. After the Taiheiji Airport was turned into a research area of the 611 Institute by the Nine Courtyards, most of the people in that area were relocated, and martial law was imposed on the surrounding area.

According to Liu Yijiu's plan, an aircraft production plant about the same size as Factory 132 will be built, or even larger, to produce large aircraft and research in this area.

After all, the construction and development of Rongcheng is still too far away, and there is only a small area around the central Tianfu Square.

"Ladies and gentlemen, the front is our confidential unit, I hope you will hand over all the equipment and pen and paper that can be recorded, otherwise it will be unpleasant, we will not be able to explain, and it will hurt the harmony......" On the way to Hongfeng Machinery Factory, Liu Yijiu said to everyone.

He planned to eat at the Hongfeng Machinery Factory at noon.

For these customers who send money, he doesn't think of them as gods.

The staff canteen is already very good.

Hongfeng Machinery Factory was originally only a small factory with more than 600 people, and there were only six mechanical workshops, as well as chemical workshops for the preparation of oxygen, liquid nitrogen and other gases needed by the airport.

Now this side has been transformed into a processing experimental workshop of the 611 Institute, which is mainly used for processing engines and verifying parts and samples of the new generation of fighters, and most of the technicians are transferred from the mountains.

Absolute secrecy units, and even, the future development of the entire Rongcheng must avoid this area......

The Soviets did not have the slightest opinion on Liu Yijiu's arrangement to eat in the staff canteen. The standard of living in the Chinese military factories is much better than that in the Soviet Union!

In particular, the subordinate units of the Ninth Hospital have always been the benchmark in China in terms of welfare.

After the meal, Liu Yijiu refused Du Bin's escort and took a group of Soviets directly to the precision machining workshop.

He got the AL-31FN from the Soviets and conducted processing experiments here, without the slightest fear that the Soviets would know about it.

As soon as the "buzzing ......" pushed open the door of the precision machinery workshop, he heard a noisy sound of mechanical friction coming from inside. These sounds are nowhere near as harsh as the rough work, but they are not the final finishing sounds.

The friction sound of the tool cutting metal materials at high speed is very loud, especially for processing some difficult-to-machine materials, and the whole sound can be transmitted far away.

The newly repaired workshop is as neat as other factories, and there are not many equipment in the finishing workshop here, but these equipment are much larger than those seen in the Hongshan Machinery Factory.

"These are all processing some high-precision and complex special-shaped parts, most of which are experimental samples. The prototype of the AL-31FN you gave us is currently being produced here......," Liu Yijiu said straight to the point.

In order to sell CNC machine tools to Lao Maozi, he is also very hard.

Even these secret things are shown to Lao Maozi's people, especially there are many intelligence officers inside. (To be continued.) )