reborn industrial empire

Medium carbon structural steel is forged, and then goes through castings, bar stock, heat treatment and tempering, then surface quenching, carburizing and annealing, and finally nitriding.

The exquisite and beautiful rough gears and bevel gears come down the production line one by one. After that, they have to be finished. The rough gears are placed on the fixed fixture and sent to the front of the engraving knife of the machine tool.

Then the computer-controlled robotic arm and various cutting tools perform final finishing.

I have to say that the Japanese technology is indeed very good. These old four-axis machine tools introduced by Huayang Gear Factory from Aisin, although they are not young, after careful maintenance, they can still make people's attention.

Breathtaking processing action.

The accuracy of the workpieces processed is simply not the same as the workpieces we process using domestic machine tools.

It’s not that Jin Xiaoqiang is belittling himself, but that our country’s extra beds are really far behind others. As an old technician who has been engaged in the automobile industry for more than ten years, Jin Xiaoqiang can be said to be heartbroken about the current status of the domestic machinery industry.

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At present, the mainstream international CNC machine tools are five-axis or even higher, and domestically it can basically reach four-axis, which is already good. Although ten years later, several machine tool processing factories in China also claim to have developed five-axis linkage machine tools.

But in fact, it is mostly for show.

Those so-called domestic five-axis machine tools are actually only able to produce some simple parts. Specific core parts, such as the core ball screw bearings, logic control software, and AC servo motors, etc.

It depends on imports.

Even ten years later, Jin Xiaoqiang once used so-called domestic five-axis machine tools in the factory, but the maximum speed of those machine tools was only 1,500 rpm or more, while purely imported Japanese or German machine tools could basically do it.

Reaching about 4000-5000 revolutions per minute.

Moreover, the machining accuracy and cutting tools are also very different.

It seems that the road to domestic machinery industry still has a long way to go!

Looking at the buzzing machine tools processing gear workpieces, Jin Xiaoqiang couldn't help but sigh in his heart. If he has the conditions and ability in the future, he must start the machine tool industry on his own.

Jin Xiaoqiang was still looking at the second-hand goods jobs in Japan and competing with himself in his mind, when suddenly Ding Weizhong in front of him shouted happily.

"It's done, it's done."

Jin Xiaoqiang looked forward and took a closer look. It turned out that the rough blank of a gear had been finished by the machine tool into a fine blank. However, at this time, the gear could not be used for assembly immediately and needed to be polished.

Even after a workpiece has been finely machined, there will inevitably be some microscopic unevenness on the surface of the workpiece. In mechanical terms, this is called roughness.

At this time, it needs to be polished before it can be assembled with other workpieces. Otherwise, if it is used rashly, it will be severely worn.

What Jin Xiaoqiang and the others introduced was only a second-hand machine tool with four-axis linkage, so it did not have the grinding function. To grind, it was necessary to use another grinder.

Fortunately, this grinder was also a second-hand product of Aisin that his father had gritted his teeth and bought directly from a bank loan. Those Japanese people are also very evil. Just so many second-hand machine tools that have been used for more than ten years.

Killing Jin Guozhu was almost 500 million yuan.

However, it seems that with the help of these instruments, the workpiece can be processed smoothly enough, so although Jin Xiaoqiang is feeling unhappy now, he can only hold his nose and admit it.

The workpieces were quickly rolled off the machine tool one by one, polished, and then assembled together by workers according to Jin Xiaoqiang's drawings.

Soon a purely manual mq200 transmission was assembled, but there was still one crucial thing missing, which was the tcu.

It is an electronic control system similar to the driving computer ECU, and it is the most difficult problem in the entire transmission.

Like the engine, the TCU also installs sensors on various key parts of the gearbox, then records the data of each part during operation, and finally summarizes them together.

After that, we will use these data to summarize the optimal state of the transmission when it is working, and then match these data with the engine data.

Only in this way can the engine work smoothly and the car start moving.

Don't underestimate this matching process. In fact, as far as the powertrain is concerned, this matching process is the most critical part, which is what ordinary people call engine tuning.

If this part is not done well, there will often be problems such as lag in shifting, obvious frustration, waste of fuel, increased engine speed, but slow power output, that is, slow acceleration, etc.

If the tuning is done well, that is, if the engine and gearbox are well matched, it will provide a car with excellent power and provide the driver with indescribable happiness.

So this is the importance of the powertrain to the car itself!

In terms of TCU, Jin Xiaoqiang was still handed over to Ding Weizhong. Who gave him connections with Shanghai Volkswagen?

This transmission is obviously imitated from the mq200. Although there are some slight adjustments, the general meaning is still the same, so this matter has to be troubled by Ding Weizhong. He got some mq200 TCUs from Bosch through his friends at Volkswagen.

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The workers were all cheering when they saw the birth of this transmission. After all, we were originally engaged in processing transmission gears, but when it comes to a complete transmission, we have never produced it ourselves.

Now a complete single-door transmission, which is said to be the 'first' in China, is born in their hands. How can they be unhappy?

If this transmission is matched with the engines they produced some time ago, then the shaping of a powertrain will be the concept of China's automobile industry. People in the industry may have the best understanding of it.

Liu Xiaoliang did not test data there during this period, but came here to witness the entire transmission production and finalization process. When he saw the transmission being assembled together, he finally couldn't help but cheer.

stand up.

As a Chinese car person, as someone who participated in and completed the development and design of China's first powertrain, how could he be unhappy?

It’s really hard to imagine that China’s first independent powertrain in modern times was born in such a simple, family-run factory.

How is this different from when Dell created Dell in the garage?

The only difference is probably that the current Dell is already an international giant, while the current Huayang Gear Factory is just an unknown small business.

However, Liu Xiaoliang suddenly realized at this time that the fate of this company in the future may be completely different from before, and the source of all this may be related to Jin Xiaoqiang who was standing on the other side watching the workers cheer and celebrate!

This kid, I really can't understand. I and him have been best friends since we wore crotchless pants. I can't figure it out. How could this guy suddenly become so powerful? It's like his brain suddenly opened up.

Same.

Could it be that this was related to his serious illness during the Chinese New Year?

Jin Xiaoqiang stood aside and watched the workers cheering and laughing, and his heart was filled with joy. In such a simple factory, there are only so many people, technology, and equipment.

Relying on these alone, he was able to create three types of engines and a classic transmission. Although it was a golden finger, he still couldn't help but admire himself.

At present, the development of the powertrain can be said to be one-third completed, and the rest depends on the matching of the engine and transmission.

There should be no problem matching the 1.6L engine and this transmission, but the matching of the remaining 2.ol and 2.4L engines with this transmission will take some time.

And it seems a little inappropriate. You must know that in fact, these two engines, Jin Xiaoqiang completely borrowed the experience from the imitation 4g63 and 4g69 engines of Great Wall and Liji ten years later.

You have to know the technology that will be left behind ten years later. The torque that these two engines can explode is much more powerful than it is now. The maximum torque that this transmission can withstand is 200 Nm, which is enough to deal with the 4g63 model.

I can barely cope with it, but it will be very difficult to deal with the 4g69 model.

What's more, I want to upgrade these engines in the future, add cvvt or dvvt technology, or create a turbocharger!

Jin Xiaoqiang, who originally thought for a while before taking out the mq250, hesitated for a while, and then decided to wait a few days before taking out the drawings of the mq250.

Otherwise, if these two drawings were taken out at once, Ding Weizhong and Yang Dingwei would have to suspect that they were aliens.

Even if I was a design genius, I wouldn't be able to come up with two different transmission design drawings within a few days, right?

I'm afraid Edison, the original inventor, didn't have such ability, right?

Jin Xiaoqiang, who originally wanted to cut through the mess quickly, decided to control the rhythm first after thinking about it, so as not to do it too fast and make others notice anything strange.

However, with the emergence of this transmission, it is enough. Let these people be happy for a while first.

During this period of time, I’d better sort out my thoughts for the time being and think about how to develop next!

It is now mid-to-late April, and there are still almost two months until Hong Kong announces the lifting of the SARS warning in June.

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