Add Bookmark | Recommend this book | Back to the book page | My bookshelf | Mobile Reading

Free Web Novel,Novel online - All in hlnovel.com -> Romance -> take off my aviation age

Chapter 952 This craft is so beautiful

Previous page        Return to Catalog        Next page

    Hearing this, Meng Qingguo immediately perked up. In his opinion, Zhuang Jianye's words were probably a bluff.

    You must know that the core of face gear coaxial torque splitting 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 main reducer and reducing weight.

    However, it is not easy to obtain this kind of face gear.

    It¡¯s not that the material is difficult, ordinary high-strength titanium alloy can be used. The key is that the processing accuracy is very high.

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

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

    Therefore, the key to the coaxial torsion splitting technology of face gears is the machining accuracy of the face gear itself.

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

    Although high-precision gear processing is complicated, as a relatively traditional mechanical processing category, it is not impossible. It just takes a little longer and requires a little more labor.

    To put it bluntly, three or two level 8 fitters can produce a face gear with an accuracy of 5 after grinding it with files for several months.

    The problem is that not only the overall cost is high, it is difficult to mass-produce it as a standard model.

    This is also an important reason why Russia and Europe, both developed areas for helicopter research and development, knew that face gear coaxial split-torsion technology has many benefits, but did not put it into use immediately.

    No way, it takes an average of 22 experienced technical workers 15 days to produce a 300mm diameter final reducer face gear in Russia.

    Europe is better. Using machining equipment for matching, a 300mm face gear can be compressed into a 300mm face gear that takes 5 skilled workers 7 days.

    But whether it takes 22 experienced skilled workers 15 days or 5 skilled workers 7 days, the cost of this type of face gear is simply beyond the reach of ordinary people.

    What's more, a helicopter main reducer requires at least 3 to 5 large-diameter face gears of this type. Under such circumstances, the cost of a main reducer is almost four times that of a traditional reducer, so that's it.  , the problem is that the production cycle has been extended by about three times, and the cost of completing one helicopter is almost equal to the purchase price of two American-made F-16s.

    Is that still a helicopter?  It's just that the helicopter gold machine is not good at all.

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

    The high efficiency is entirely due to the friction between Europe and Russia.

    Otherwise, it would be impossible for the Americans to apply this technology to the Longbow Apache and Comanche helicopters. The so-called is just like the F-22, maintaining one or two generations of global dominance in the field of armed helicopters.  The absolute advantage makes Americans feel safe.

    Europe and Russia are of course eager to see it, and their purchase intentions are sent to the United States almost every month. However, the United States has included it in the list of technologies that restrict exports. Not to mention Russia, even its European allies have no way to touch it.

    As a senior expert who has been dealing with helicopters for most of his life, Meng Qingguo naturally knows the situation in this regard. Can Ascendas Group understand something that even Russia and Europe cannot figure out?

    As for Ascendas Group having technology like the United States, Meng Qingguo didn't even think about it. How could it be possible? That's the United States, which is playing tricks on the heads of Russia and Europe. As a whole, Ascendas Group can't even catch up with Europe and Russia.  , how can we catch up with the United States?

    That is to say, Pakistan was taken advantage of. It was deceived by Zhuang Jianye and spent a lot of money to buy the straight-12pro with a face gear coaxial split-torsion technology main reducer. Later, I will go to the actual workshop to see the real situation and see if the domestic military leaders buy it.  ?

    It¡¯s just that the price is too expensive, the production cycle is still long, when has the army ever chosen something so inefficient?

    With the idea in his mind settled, Meng Qingguo said: "Can you take us to see it? To be honest, I am very curious about how the core components of this world-leading main reducer are produced."

    "No problem!" Zhuang Jianye agreed happily, and then reached out to the head of the headquarters and Meng Qingguo to signal: "Chief leaders,Please come by.  "

    Then he led a group of leaders through the Zhi-12pro's final assembly workshop, then passed two machining workshops and a sheet metal workshop, and then came to a factory building. They 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 see the inefficiency of Ascendas Group's gears.

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

    I saw that this workshop covering an area of ??only 2,500 square meters was neatly placed with more than ten machine tools of the same standard. It had a gray-white exterior facade, a pure blue base, and the terminal PC controller was shining brightly.  The huge nb-404 on the front is particularly shiny.

    With the clean floor, bright space and well-dressed workers, Meng Qingguo just felt that he was in the wrong place.

    What about the fitter class?

    ??So high-precision face gears don¡¯t need to be polished by a high-level benchwork team?

    Where is the measuring room?

    Doesn¡¯t the processed face gear need to be inspected and measured?  Otherwise, how do you know the accuracy is up to standard?

    Where is the mold set?

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

    ¡­¡­

    Countless questions flooded Meng Qingguo's mind like bullet screens, but the facts before him told him that this face gear processing workshop really didn't have those bits and pieces. It was just a dozen machine tools and about forty workers.  , half of which is still responsible for the cost of packaging and transportation.

    "Youyourely on these machine tools to process face gears?" After an unknown amount of time, Meng Qingguo finally came back to his senses and looked at Zhuang Jianye.

    "nb-404 is right here"

    Zhuang Jianye did not answer directly, but gestured towards the machine tool not far away, obviously letting Meng Qingguo and others see for themselves.

    Meng Qingguo couldn't hold it in anymore. He took two hurried steps and came to an nb-404. When he looked in through the transparent observation window, he felt as if he had seen some incredible supernatural phenomenon. His eyes suddenly opened.  big.

    At the same time, a military leader next to him exclaimed: "This craftsmanship is so beautiful!"

    If you like Soar My Aviation Age, please collect it: Soar My Aviation Age is updated the fastest.  (Remember the website address: www.hlnovel.com
Didn't finish reading? Add this book to your favoritesI'm a member and bookmarked this chapterCopy the address of this book and recommend it to your friends for pointsChapter error? Click here to report