Take Off My Aviation Era

Upon hearing this, Meng Qingguo immediately became energetic. In his opinion, Zhuang Jianye's remarks are likely to be bluffing.

It should be understood that the core of the face gear coaxial split-twisting technology is to use face gears with a diameter of 300mm to 500mm to replace complex bearing gear sets, thereby simplifying the structure of the helicopter final reducer and reducing the weight.

However, it is not easy to obtain such a face gear.

Not to say how difficult the material is, just a general high-strength titanium alloy. The key is that the machining accuracy is very high.

After all, this kind of face gear plays an extraordinary role in the main reducer. It not only has to withstand the high speed from the turboshaft engine, but also transmits it to the planetary gear set of the upper layer through the non-orthogonal small bevel helical gear. The speed is controlled within a certain range.

Because of this, there are very strict requirements on the degree of meshing between the face gear and other matching gears and the size of the gap.

Therefore, the key to the face gear coaxial split-twisting technology is the machining accuracy of the face gear itself.

According to the domestic gear accuracy grades, the minimum level must reach 6 grades. Under normal circumstances, it must have 4 to 5 grades of accuracy to meet the durability requirements of the helicopter's main deceleration.

Although the machining of high-precision gears is complicated, it is not impossible as a more traditional machining category. It only takes a little longer and requires a little more labor.

To put it bluntly, three or two eighth-level fitters can produce face gears with a precision of 5 even after several months of grinding with a file.

The problem is that, despite the high overall cost, it is difficult to mass produce as a standard model.

This is also an important reason why Russia and Europe are both developed regions for helicopter research and development, knowing that the face gear coaxial split-twisting technology has many benefits, but it is not immediately put into application.

No way, it takes an average of 22 experienced skilled workers 15 days to complete the production of a final gear with a diameter of 300mm in Russia.

Europe is better. It takes 7 days to compress a 300mm face gear to 5 skilled workers by using machining equipment.

But whether 22 experienced skilled workers spend 15 days or 5 skilled workers spend 7 days, the high cost of this type of face gear is simply not affordable for ordinary people.

What's more, 3 to 5 such large-diameter surface gears are required in a helicopter main reducer. In this case, the cost of a main reducer is almost four times that of a traditional reducer. The problem is that the production cycle has been lengthened by about three times. If the cost of completing a helicopter is calculated comprehensively, it is almost worth the purchase price of two US-made F-16s.

Is that still a helicopter? It's just that the helicopter is not good.

Of course, the United States is an exception in this regard, because American helicopter giants such as Hughes and Sikorsky have long developed a new gear grinding machine for face gears, so that an average of 1 skilled worker can produce 10 per day. Face gears with different specifications from 300mm to 500mm in diameter.

The high efficiency is entirely based on friction between Europe and Russia.

If this is not the case, it is impossible for the Americans to apply this technology to the longbow Apache and Comanche helicopters. The so-called is not the same as the F-22, maintaining the world’s one to two generations in the field of armed helicopters. The absolute advantage of such American talents feel safe.

Of course, Europe and Russia are greedy, and their intention to purchase will be sent to the United States almost every month, but the United States has included it on the list of technology restricted to export, let alone Russia, even European allies want to touch it.

As a senior expert who has dealt with helicopters for most of his life, Meng Qingguo naturally knows the situation in this regard. Can the Ascendas Group understand things that even Russia and Europe can’t do?

As for the fact that Ascendas Group will have technologies like the United States, Meng Qingguo didn’t even think about it. How could it be possible? That’s the United States. The United States is playing friction between Russia and Europe. In general, Ascendas Group can’t keep up with Europe and Russia. How can we catch up with the United States?

That is to say, Pakistan was taken a lot of money. He was fooled by Zhuang Jianye's mouth and used a lot of money to buy a straight-12pro with a face gear coaxial split-twisting technology main reducer. Later, I went to the field workshop to see the truth and see if the domestic army leaders could buy it. ?

The price is too high, and the production cycle is still long. When has the army ever chosen something so inefficient?

With the thoughts in his mind set, Meng Qingguo said: "Can you take us to see? To be honest, I'm very curious about how this world-leading core component of the final drive is produced."

"No problem!" Zhuang Jianye promised very happily, and immediately reached out his hand to the head of the headquarters and Meng Qingguo to indicate: "Dear heads, please here."

Then I took a group of leaders through the Z-12pro assembly workshop, and then passed two machining workshops and a sheet metal workshop, and then came to a factory building, registered as usual, and a group of leaders filed in. Meng Qingguo, who was in the front position, immediately opened his eyes wide, ready to have a panoramic view of the inefficiency of Ascendas Group's gears.

As a result, his clear eyes straightened as soon as he entered the door.

I saw that this workshop covering an area of ​​less than 2500 square meters was strewn with more than ten unified machine tools~www.readwn.com~The gray-white facade, the pure blue base, and the terminal PC controller flashed With bright light, the front side of the large NB-404 will be particularly shiny.

With the neat ground, bright space, and uniformly dressed workers, Meng Qingguo only felt that he was in the wrong place.

Where's the fitter class?

So high-precision face gears don't need high-level fitter teams to polish them?

Where is the measurement room?

Doesn't the processed face gear need to be inspected and measured? Otherwise, how to know the accuracy is up to the standard?

What about the mold group?

The grinding wheel in the gear machining process does not have real-time adjustment of the mold set. How to control the machining accuracy?

...

Countless questions in Meng Qingguo's mind are like barrage screens, but the facts in front of him tell him that this face gear processing workshop is really free of those bits and pieces. It is completely equipped with a dozen machine tools and forty workers. , Half of them are still responsible for the cost of packaging and transportation.

"You...you...relied on these machine tools to process the gears?" After an unknown period of time, Meng Qingguo finally recovered and looked at Zhuang Jianye.

"NB-404 is here..."

Zhuang Jianye didn't answer directly either, but gestured towards the machine tool not far away, obviously for Meng Qingguo and others to see for themselves.

Meng Qingguo couldn't hold back anymore. He walked two steps hurriedly and came to an NB-404. Looking in through the transparent observation window, he was as if he had seen some incredible supernatural phenomenon. His eyes suddenly opened. Big.

At the same time, a leader of the army next to him exclaimed: "This craft is so beautiful!"

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