I am farming in the real world.

Chapter 279: Craftsmanship?

The reason why these two Kawasaki masters were so surprised
This is because in the field of mechanical processing, it is almost impossible to simply rely on the cutting process of the machine tool to form a fixed distance with one cut, and the tolerance must reach 7 decimal places with all zeros!

Because when the cutting edge of the machine tool falls, it will inevitably produce a thermal effect after contacting and squeezing the cut material, which will cause part of the material to deform.

Any deformation will produce distance tolerance!
Even if the tolerance is very slight, it cannot be detected without observation through professional high-magnification imaging equipment or distance measurement using a laser interferometer.

However, the tolerance that exists objectively in fact is an unavoidable factor in ultra-precision machining.

Therefore, if these master craftsmen want to cut out the desired size and length, they will definitely reserve a certain size for the subsequent grinding process.

For example, if you want to cut a standard 1 cm ultra-precision bar, you have to reserve the flexible size of grinding in advance, and cut to a distance of 1 cm or micron, so that the subsequent grinding master can participate in grinding away the extra distance little by little.

If the cut is a little shorter than 1 cm, no matter how skilled the grinder is, he will not be able to make up for this slight error and the material will have to be declared scrap.

This is also the reason why manual work is used during the processing of profiles instead of relying solely on industrial machine tools.

If it is a machine tool, there will be tolerances!

Only with the assistance of the master chef’s skills can the tolerance be adjusted back.

Seriously speaking, even the most advanced industrial machine tools in various countries are produced with precision that is achieved bit by bit through manual effort and assistance from equipment.

In the field of ultra-precision grinding, China has always been at the level of catching up with the first echelon.

It was not until the emergence of several top-notch technicians who could reach the nanometer level by hand-rubbing that the backward situation was changed.

However, these top-grade technicians are generally China's national treasures, and are two levels higher than the eighth-grade fitters of the past.

Most of these talents work in state-owned units, responsible for the grinding of confidential military parts such as spacecraft and fighter jets, and are unlikely to appear in the private commercial field.

So, when the two Kawasaki masters saw that the size and spacing of the bamboo dragonfly toy actually exceeded the tolerance of the laser interferometer, the first thing they thought of was: "Could this toy have been made by those top technicians in China?"

If it weren't for those top-notch technicians who are known for their superb workmanship, a private enterprise in China alone would be far from being able to achieve this nano-level grinding precision.

They never thought deeply about the fact that the precision tolerance of the side length of this toy was actually far beyond the measurement limit of the nano-level laser interferometer in their hands!
Even if we add 100 zeros after the decimal point of centimeters, we still cannot measure its tolerance value.

……

Time passes minute by minute.

Musk, who was standing outside the experimental workshop, listened to President Yoshitsuyoshi Kaneka introducing several nano-level machining processes developed independently by Kawasaki Heavy Industries.

In addition to nano-level grinding, Kawasaki Heavy Industries also has expertise in nano-level pulse waveform adjustment flaw detection, nano-level laser cutting, etc.

"Mr. Musk, don't be fooled by the hype about those so-called ultra-precision five-axis CNC machine tools. In fact, to achieve the ultimate in ultra-precision machining, it must be done by a combination of craftsmen and professional equipment," said President Yoshitaka Kaneka.

Musk also followed suit: "I understand! The industry masters admired by your country are the craftsmanship spirit that we American workers can never learn!"

Listening to the flattery of the so-called American technology fanatic, Jin Hua Fanggang also showed a bit of satisfaction on his face.

Sure enough, more than an hour later, the door of the experimental workshop finally opened slowly.

Two Kawasaki masters took off their anti-magnetic suits and appeared in front of everyone holding two almost identical bamboo helicopter toys.

"President Gangfang! Mr. Musk! The things are ready. They are exact 1:1 replicas of the originals." One of the master craftsmen respectfully handed the two bamboo helicopters to Musk.

Just observing with the naked eye, there is no difference between the two in terms of size or metallic luster.

"Amazing!" "As expected of Kawasaki Heavy Industries, the machining capabilities of the Sakura Country are truly unique." Musk couldn't help but exclaim in admiration as he played with two almost identical toys.

As for Jin Huafang who was standing aside, she had just seen her own company making a big show in front of outsiders, and showing off its skills in front of an American celebrity like Musk, so her face was smiling like a blooming chrysanthemum.

On the other hand, the two Kawasaki masters who worked together continued to introduce: "This toy really took a lot of thought to make. Both the processing accuracy and the grinding process have reached the highest nanometer level in the industry! Even in our country of Sakura, there is no third company that can reproduce this toy."

“Although its shape is simple, we spent more than half an hour to make precise measurements in order to replicate it. Finally, we used the same NiCr20TiAl alloy material to make nine samples, and then spent another half an hour grinding them one by one. Finally, we got a replica with the closest tolerance to zero!”

As soon as Jin Huafang heard this, she immediately bowed and thanked him, saying several times: "Master Fujido, Master Ogawa, this is Ci Kalesa! You two have worked hard! Please go and rest as soon as possible! You two are the leaders of our Kawasaki Heavy Industries. Taking care of your health is creating value for our Kawasaki."

When facing such a great master chef, it is only right to show respect to him.

When Fujido and Ogawa heard such compliments, a look of complacency appeared on their faces.

However, when Musk heard how much time the two had spent on this replica, he, who was originally full of confidence, felt that he had fulfilled the bet with Chen Jue.

I immediately noticed something was wrong!
"That is to say, after the two masters made this replica, they did not conduct a long-term control experimental group?" Musk asked, swallowing.

"A long-term control group?"

"Is it necessary to conduct long-term testing on a toy made of the same material and with the same nano-processing precision?" Fujido and Ogawa frowned.

To them it was just a metalworking toy.

As long as the proportions are successfully replicated and you turn it around for a few minutes and don't see any problems, you think you can hand it in.

I never expected that Musk, the person seeking help, would care so much!
Since there is this control requirement, it is enough to just test it on site.

As a result, when a group of people came to a windless room, they placed two bamboo dragonfly toys on the table, used a remote-controlled robotic arm to apply the same force to them and started a high-speed rotation test.

1 minutes,

3 minutes.

5 minutes,

At first, the two toys rotated at highly consistent speeds, and there was no difference visible to the naked eye.

In addition, since it was originally a 1:1 replica, the two bamboo helicopters were placed there without any labels. Even outsiders such as Yoshitsugu Kaneka and Elon Musk could not tell which one was made by Magic Cube Group and which one was made by Kawasaki Heavy Industries.

However, when it rotated for 13 minutes, one of the bamboo helicopters began to show a visibly slowing down of speed.

Musk's face showed despair, and he held his head and wailed: "NO!"

This scene made the two Kawasaki master chefs, who had just sworn that there was no problem, blush with embarrassment.

As the president of Kawasaki, Jinhua Fanggang wanted to stand up and defend the technology of his own company, and hurriedly asked: "Mr. Musk, please don't get excited! Perhaps we can improve the process and make another batch that will definitely meet your requirements."

Musk pointed at the spinning bamboo dragonfly that made him nervous, and said tremblingly: "Do you know how long this damn thing has been spinning in our Tesla factory? I used the same robotic arm as yours to push it, and it spun for 20 minutes! More than 20 minutes!"

As soon as these words were spoken, all the Kawasaki Heavy Industries employees present at the scene froze in their expressions.

Lasts more than 20 minutes?

Wouldn't the processing accuracy of Magic Cube Group's original parts be several generations ahead of Kawasaki Heavy Industries?

This time, my revenge was not successful, but I ended up losing face!
(End of this chapter)