"You can try to find a few old carriages to install and test, if there is no problem with continuous use for more than ten days, we can start to build a special bearing factory to large-scale production, whether it is a two-wheeled or four-wheeled carriage can be installed and used in the future......"

"Go find a carriage!" Before Chen Xu's words were finished, the car-building order jumped up and yelled.

So a few of the helpers in the shed dropped their tools and ran out to look for them.

"How many of these largest bearings have been made?" Chen Xu threw the big pulley in his hand to a carpenter next to him and stood up and asked.

"I only make about a dozen like this, but there are still a lot of collars and steel balls, if Master Hou wants more, we can make more than a dozen in a day or two......"

"Enough is enough, hurry up and arrange for the craftsmen to do more!"

"Okay, Master Hou, I'll arrange it!" The hemp rod fart ran away again.

Soon a few helpers pushed an old wagon used to transport hay, and under the command of the cart builder, four carpenters and a group of helpers swarmed up to turn the wagon over, wielding axes and hammers, and quickly unloaded the wheels and axles from the wagon.

"You two go rework the wheels!"

"You find a new axle......

With the order to build the car, a group of people got busy with their own work, but Chen Xu took a pulley and began to pinch his chin and ponder.

Chen Xu grew up in the countryside when he was a child, played with two-wheeled board wheels, and also saw his father repair board wheels, but the steel balls of the board wheels are directly installed between the axle and the wheels, and the steel balls are broken to remove the wheels, replace them with new steel balls, and then install them after smearing them with butter, but the current situation is different from all the wheels made of steel in later generations, because all the wheels are basically made of wood, so in order to facilitate replacement and maintenance, it is best to separate the bearings and axle wheels, and replace the wheels when the wheels are broken on the road. If the bearing is broken, replace the bearing, which is the most convenient and fast, and prepare a few more bearings on the long road.

In addition to the fast rotation of the bearing, there is one of the most obvious advantages is that the two wheels can form a huge speed difference, which is a natural differential, and the car with the bearing can turn in situ, but the ordinary carriage because the axle and the wheel are fixed together, the two wheels want to turn together, so they can not turn in place, and can only turn a big turn when turning around, even if it is a two-wheeled carriage that runs flexibly on the street, when cornering, the wheel can only be stuck in the rut and rely on the pull of the ox or horse to force the turn. In fact, the wear on the joint between the axle and the body is quite large, and the wear on the wheels is also noticeable.

However, even if the bearing is used, the steel ball and the collar must be in a direct friction state, plus the steel is not good, the grinding is not smooth enough, if you want to prolong the service life of the bearing, then lubricating oil is a must.

But at present, he has not found oil, and even if he does, he will not be able to synthesize the butter of future generations......

The shed was clanging, some people were renovating old cars, some were debugging new cars, but Chen Xu was pinching his chin at a bearing as if he had been in the fixation method, and he was deaf to the noise around him.

After a long time, Chen Xu suddenly put down his hand and beckoned a steward of the Academy of Sciences and said, "Go and help me find some grease and graphite!" ”

"Master Hou, wait a minute, my subordinates will go and find it!" The steward hurried away, and in less than ten minutes hurried back again, carrying a clay pot containing a jar of animal fat, with salt on it, which at first glance had been brought from the kitchen, and a helper covered in dust, with half a pot of black graphite in a clay pot.

"Master Hou, bring them all, can you see if it's enough?" The steward asked cautiously.

"That's enough, find another grinding trough and help me grind graphite into the finest powder!"

Under the arrangement of the steward, two more helpers soon carried over an iron grinding trough, selected some clean graphite blocks and threw them into the grinding trough and began to grind it.

This kind of thing was very common in the countryside before, and it was a must-have thing for the pharmacy like the cutter and iron mortar, Chen Xu played a lot when he was a child, and he also helped to grind medicinal materials in the second grandfather's pharmacy.

At present, you can't find lubricating oil, in fact, many people should know that pencil lead powder has a good lubrication effect, such as the door lock is not easy to close, and it is very refreshing to smear the door on the keyhole and deadbolt with a pencil, which is a very common life knowledge, and the main component of the pencil lead is graphite, and the current graphite factory is more, steelmaking, ironmaking, glass, and crucibles are made of a large number of graphite, and graphite is also a necessary writing material for Chen Xu's daily life, but there has been no way to make pencils.

Since the pencil lead can have a good lubrication effect, the natural graphite powder is definitely okay, but the dry graphite powder must be easy to scatter, Chen Xu thinks that you can add a little lard or butter or something to reconcile it, and it is definitely not a big problem to use it as butter for the time being, if you can, maybe you can add a little paraffin, and this matter can be tested by the people of the Academy of Sciences after you go back.

Anyway, in this primitive farming civilization, the development of precision industry is a very J8 thing.

And there are no scientists who are proficient in industrial design, all the things commonly used in life in later generations cannot be easily designed and manufactured, it is all up to Chen Xu to say the theory in detail and draw drawings, and then let the craftsmen figure out the experiment, and Chen Xu is also ignorant of many things, just seen.

He has also seen cars, airplanes, trains, ships.

But it is estimated that it may not be enough to make it in this life.

As for computers, mobile phones, and cameras, I definitely can't do it in this life.

Chen Xu stayed in the factory all morning, personally watched and rode the carriage after the axle was installed, and watched the steering test of the four-wheeled carriage, and put forward his own ideas and rectification suggestions for some places. Later, he drew a new bearing design drawing for the hemp rod and the male loser, redesigned the steel ball specifications for the carriage bearing, and drew a schematic diagram of the spiral groove for the two to try to make a hot-stamping spiral lathe, to see if they could use the steel bar heated to a semi-melted state to make a steel ball with more consistent specifications, and use the spiral groove to make the steel ball more round, so that when a large number of bearings need to be manufactured, there is no need to measure the size of the steel ball with calipers one by one.

And once the steel ball bearing enters the practical stage, the entire Daqin demand for bearings will instantly reach a terrifying number, Xianyang alone has tens of thousands of carriages, ordinary carriages are better, especially the demand for bearings in trucks is more urgent, once people know the benefits of bearings, I am afraid it will go crazy, everyone wants to transform their own carriages into new bearing devices.

Therefore, thinking of this effect, Chen Xu reminded Gong Chengsheng and Ma Gong to prepare a special bearing processing factory as soon as possible to speed up the design and manufacture of special bearings for carriages, and found two carpenters from Qinghe Town, such as sticks and donkeys, and asked them to try to make a pedal grinding and polishing machine according to the principle of the pedal blank drawing machine to speed up the polishing and polishing of the bearing collar.

In order to really promote Daqin to the road of industrial development, all the equipment must slowly move closer to the aspect of the machine, no matter what machinery and equipment, only if there are more, all kinds of work will be more labor-saving, and will also drive more people to change the way of thinking, to continue to learn and understand the working principle of these machines, and then participate in the improvement and improvement, with the College of Engineering and the Academy of Sciences to slowly apply various scientific theories to life and production, so as to slowly go faster and faster on the road of industrial development.

The industrial development of a country cannot be driven by two people.

Especially in such a primitive agricultural era, it requires a large scientific and technological community as a foundation.

After having lunch in the factory's staff canteen and the hemp pole Gong Sheng, Chen Xu went to inspect the newly repaired glass factory, and then went to the cement factory built a few miles away to have a look, and encouraged Zhang Wen and all the craftsmen of the cement factory to help before preparing to return to the city.

However, he felt that it was still early when he walked halfway through, so he changed the route and went to the manor that Li Xin gave him to have a look.

Li Xin's manor covers an area of 10 hectares, with several farming families responsible for farming, and a large yard covering an area of more than 30 acres.

After Chen Xu asked the housekeeper to take over the courtyard, he cleaned it up, arranged some domestic servants and guards to take care of it, and named it Nanshan Villa.

The inner courtyard of the Nanshan Annexes was divided into two parts, and several houses were renovated and converted into medicine laboratories, and then Zheng Boqiao and his two apprentices were taken from the factory and arranged in this courtyard to secretly study the Five Poisons Soul Water and some other medicines, and Xu Fu would sometimes come over to do experiments together.

The other part is the firearms research laboratory, where two dumb slaves moved from the Academy of Sciences to continue making gunpowder, and at the same time secretly recruited a few craftsmen who were proficient in casting and mechanics to make more firearms, handguns, grenades and other firearms, and even developed artillery based on fireworks shells.

Although Chen Xu didn't believe the catastrophe that Guiguiguzi said nine years later, but this time the emperor let Li Si be Hu Hai's teacher, Chen Xu still felt some pressure, he had to make some preparations in advance, secretly build a batch of firearms, and then secretly recruit some people to train a special firearms unit, when the time comes, if Qin Shi Huang really wants to go on a parade, let people ambush near the sand dunes in advance, once the emperor is really hung up and Li Si is ready to support Hu Hai to power, Li Si can be killed, Now that there is no Zhao Gao, the guy who caused chaos in the dynasty, Li Si, a-stirring stick, may not be the same as later generations, Chen Xu has been constantly sabotaging Li Si's various statecraft strategies, Li Si must also be dissatisfied with Chen Xu, and when the time comes, he may be able to provoke Hu Hai to kill Chen Xu, and this matter has to be prevented.

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