Medium carbon structural steel is forging, then through castings, bars, after heat treatment and quenching, then surface quenching, carburizing and annealing, and finally after nitriding.

A delicate and beautiful gear and bevel gear rough embryo just like this down the production line, after that, it is time to finish, one by one the gear rough embryo put on the fixed fixture, sent to the front of the machine tool carving knife.

The final finishing is then carried out by a computer-controlled robotic arm and a variety of tools.

I have to say that my technology is indeed in place, Huayang Gear Factory from Aisin to introduce these old four-axis linkage machine tools, although not young, but after careful maintenance, but can still make people breathtaking processing actions.

The accuracy of the processed workpiece is simply not the same as the workpiece processed by us using domestic machine tools.

As an old technician who has been engaged in the automobile industry for more than ten years, Jin Xiaoqiang can be said to be distressed about the current situation of the domestic machinery industry.

At present, the international mainstream CNC machine tool is five axes or even higher, and the domestic basic ability to reach four axes is already good, although ten years later, there are several machine tool processing factories in the Celestial Empire also claim to have made a five-axis linkage machine tool, but in fact, it is still a show of the majority.

Those so-called domestic five-axis linkage machine tools, in fact, the Celestial Empire is only able to produce some simple parts, specific core parts, such as the core ball screw bearing, as well as logic control software, and AC servo motors and so on are imported.

Ten years later, Jin Xiaoqiang also used the so-called domestic five-axis machine tools in the factory, but the maximum speed of those machine tools is 1500 revolutions per minute, while the purely imported machine tools or German machine tools can basically reach about 4000-5000 revolutions per minute.

And there is a big difference between machining accuracy and tools.

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

Looking at those machine tools that are buzzing and processing gear workpieces, Jin Xiaoqiang can't help but sigh in his heart, if he has the conditions and ability in the future, he must engage in the machine tool industry by himself.

Jin Xiaoqiang was still looking at the second-hand work of those books, and at the same time competing with himself in his heart, at this time, suddenly Ding Weizhong in front of him shouted happily.

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

Jin Xiaoqiang looked forward and saw that the rough embryo of a gear had been refined into a billet by the machine tool, but at this time, the gear could not be used for assembly immediately, and it had to be polished.

Even after a workpiece has been finished, there will inevitably be some microscopic unevenness on the surface of the workpiece, which is called roughness in mechanical terms.

At this time, it must be polished to be combined with other workpiece groups, otherwise it will be worn out more rashly.

Jin Xiaoqiang and the others introduced only a second-hand machine tool with four-axis linkage, so it does not have the grinding function, and another grinding machine must be used to polish.

Fortunately, this grinder is also the second-hand goods of Aisin that his father gritted his teeth at that time and bought directly from the bank with a loan, and those who said that he was also black enough, just so many second-hand machine tools that have been used for more than ten years have slaughtered Jin Guozhu almost 500 million yuan.

However, at present, it seems that with the help of these instruments, the processing of this workpiece is really smooth enough, so although Jin Xiaoqiang is unhappy now, he can only pinch his nose and admit it.

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

Soon a purely manual MQ200 transmission was assembled, but there is still a very key thing missing, that is, the TCU.

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

Like the engine, this TCU is also equipped with sensors in each key part of the gearbox, and then records the data of each part during operation, and finally summarizes it together.

After that, this data is used to summarize the optimal state of the transmission when it is working, and then match this data with the engine data.

In this way, the engine can work smoothly and the car moves.

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 sluggish shifting, obvious frustration, fuel consumption, and engine rpm, but the power output is slow, that is, slow acceleration and so on.

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

So that's how important the powertrain is to the car itself!

In the TCU area, Jin Xiaoqiang still handed it over to Ding Weizhong, who made him have a relationship with Shanghai Volkswagen?

This transmission is obviously an imitation of the MQ200, although there are some fine-tuning, but the general meaning is still about the same, so this matter has to trouble Ding Weizhong to pass, he is on the Volkswagen friend's side, from Bosch where to get some MQ200 TCU.

The workers are also cheering when they look at the birth of this transmission, after all, everyone was originally engaged in transmission gear processing, but to say a complete transmission, everyone really has not produced it personally.

Now that a complete and supposedly 'first' unique transmission in China was born in their hands, how could they not be happy?

If this transmission matches the engines they produced some time ago, then the formation of a powertrain, what is the concept of the automotive industry in the Celestial Empire, they are probably the most clear in the industry.

Liu Xiaoliang did not test the data over there during this time, but ran here to witness the entire transmission production and finalization process, and when he saw the transmission assembled together, he finally couldn't help cheering.

As an Autobot of the Celestial Empire, as a person who participated in and completed the development and design of the first powertrain of the Celestial Empire, how could he not be happy.

It is really hard to imagine that the first power achievement of the modern Celestial Empire was born in such a simple, family-like factory.

What's the difference between this and Dell getting Dell out of the garage in the first place?

The only difference is that the current Dell is already an international giant, and the current Huayang Gear Factory is just a small enterprise with no name.

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

This kid really can't figure it out, he and he can be said to have been dead friends since he wore open crotch pants, and he can't figure it out, why did this guy suddenly become so powerful, as if his brain suddenly opened up.

Could it be that this is related to a serious illness when he was celebrating the New Year?

Jin Xiaoqiang stood aside and watched the workers cheering and laughing, and his heart was also full of joy, in such a simple factory, there are only so many people and technologies, as well as equipment.

With these alone, he actually made three types of engines, and also made a classic transmission, although he opened the golden finger, but he still couldn't help but admire himself.

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

The 1.6L engine and this transmission should be perfectly fine, but the remaining 2.OL and 2.4L engine will take some time to match.

And it seems to be a little inappropriate, you must know that in fact, these two engines, Jin Xiaoqiang is completely from the experience borrowed from the imitation 4G63 and 4G69 engines of Great Wall and Liji ten years later.

You must know that the technology that is left in the next ten years, the torque that these two engines can burst out is much stronger than now, and the maximum torque that this transmission can withstand is 200 Nm, which is barely enough to deal with the 4G63, and it is very difficult to deal with the 4G69.

What's more, I want to upgrade these engines in the future, add CVVT or DVVT technology, or make a turbocharge!

Originally, Jin Xiaoqiang, who had thought about taking out the mq250 for a while, hesitated for a while, and then decided to wait a few days to take out the drawings of the mq250.

Otherwise, if these two drawings were taken out at once, then Ding Weizhong and Yang Dingwei would not have to suspect that they were aliens.

Even if you are a design genius, you can't come up with two different transmission design drawings in a few days, right?

I'm afraid that Edison, the original king of inventors, didn't have such skills, 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 quickly and make people notice something unusual.

But now with the advent of this transmission, it is enough to make these people happy for a while.

During this time, I still have to clear my mind for the time being, and think about how to develop next!

It's mid-to-late April, and it's almost two months before Hong Kong announces the lifting of the [***] warning in June.

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