"Okay, then I'll take a look and study it together. Liu Chi nodded, took the USB flash drive handed over by Li Haiqing, and plugged it directly into his office computer.

The four of them saw Liu Chi operating the computer and also gathered around.

Liu Chi connected a few points on the screen, found the folder, and clicked to open it.

Half a minute later, Liu Chi quit the computer and said, "This screen is too small and inconvenient, go to my laboratory to see it." ”

“......”

"Damn. ”

"Damn, Liu Chi, you're a senior in the laboratory. ”

"How much does it cost? ”

"Local tyrants. ”

"Okay, let's get down to business first, and then you can build one yourself. Liu Chi said while turning on the control computer of the service cluster.

"You can say it's easy, how much does this cost?"

"It's not much, there is a server cluster on the upper layer with more than 100 million, and these devices add up to about a billion. ”

"Damn...!"

"Don't say it, it's troublesome. ”

“！！！”

“......”

Liu Chi shook his head helplessly, plugged the USB flash drive into the USB port, and clicked on the folder he just saw.

"Are you using the Three Machines?" Liu Chi looked at it a few times, frowned and asked.

"Yes, the three-machine movement can ensure the accuracy and balance very well. ”

"The three machine cores can indeed ensure the accuracy very well, but if the accuracy of the shaft and bearing is not good, it will be counterproductive. Liu Chi enlarged the shaft position and pointed to the bearing position on the screen and said: "What is the accuracy of your here, does it meet your design requirements?"

"Statistically OK. ”

"Is it okay to have four bearings up and down?"

"No problem. ”

After Liu Chi watched it for half an hour, he asked a little puzzled: "You haven't considered the role of temperature?"

"Temperature ???"

"You won't think about it, will you?" Liu Chi added after speaking: "Hot expansion and cold contraction, big brother?"

"We will naturally consider this, but this is already the highest precision bearing we can buy, and we asked the manufacturer, and they said that it can meet our requirements. "Chen Song is a little lacking in confidence.

"They said, 'You just believe it, have you been tested?'

"We're not you, we have a ready-made lab. Li Haiqing said with a look of disdain.

"That's right. Liu Chi nodded and said: "If the accuracy is not reached, it is basically a matter of materials." ”

"The main reason for the accuracy of the machine tool is that it is normally divided into three points: 1. The change of the ambient temperature of the workshop, 2. The heating of the motor and the friction of mechanical movement. ”

"3. The influence of cutting heat and cooling medium causes the temperature rise of each part of the machine tool to be uneven, resulting in the change of the shape accuracy and machining accuracy of the machine tool. ”

Liu Chi saw that the three of them didn't speak, so he said: "I'll give you an example, in an ordinary precision CNC milling machine processing 70mm×1650mm screw, 7:30-9:00 a.m. milled workpiece compared with 2:00-3:30 p.m. workpiece, the cumulative error change can reach 85um. ”

"At constant temperature, the error can be reduced to 40um!"

For another example, a precision double-end grinding machine for double-end grinding of 0.6~3.5mm thick thin steel sheet workpieces, processing 200mm×25mm×1.08mm steel sheet workpieces can achieve mm dimensional accuracy, and the bending degree is less than 5mm in the full length. ”

However, after 1 hour of continuous automatic grinding, the size change range increased to 12 mm, and the coolant temperature increased from 17 °C at start-up to 45 °C. ”

"Due to the influence of grinding heat, the spindle journal elongates and the front bearing clearance of the spindle increases. ”

“......”

"So there's no way to solve it?" Li Haiqing asked unwillingly.

Liu Chi thought that he had something to do with the above, maybe there was a way from above, so he asked the three of them: "By the way, what level of bearing are you using now?"

"P2! This is the highest level that can already be bought. ”

"We still buy imports. Chen Song added.

"That should be no problem, but in my opinion, the accuracy of your bearing, still does not meet the requirements of your design, under the action of the tripartite force, if at room temperature, the accuracy error is at least more than 0.05MM. ”

"AND I JUST LOOKED AT YOUR DESIGN REQUIREMENTS, AND YOUR ACCURACY IS 0.03MM. ”

"Then what should I do, this is already the most high-precision bearing?" Li Haiqing scratched his head in embarrassment.

"If there is no way to solve the bearing problem, I think the accuracy of using one machine core is higher than that of you using three. ”

"Think about it, with a machine core, a total of only two bearings, you now use three machine cores, the machine core has six bearings, plus four on the shaft, it becomes 10, tolerance + tolerance, you also have to consider the role of force, the error is not greater?"

"I think what Liu Chi said makes sense. Li Haiqing said to Xiao Yunhao.

"Why don't you get one out and try it first?"

"Yes. ”

"I'll also help you ask if there are any bearings and cores with better precision. After Liu Chi finished speaking, he closed the folder on the screen.

"Okay. ”

"Let's go, it's almost time to eat, I'll invite you to dinner. ”

"Wait, one kettle per person. ”

"You ......," Liu Chi rolled his eyes.

"Hit the landlord, divide the land, and when you come, you must bring one back, who let me not grab it online. Li Haiqing said confidently.

"Okay, I'll give you one. Liu Chi shook his head helplessly.

“......”

After sending these cheeky guys away, Liu Chi made a phone call to Chen Luguang and mentioned the matter of the machine movement and bearings.

For Liu Chi's request, the above naturally attaches great importance to it, and naturally cares about this matter.

Who knows if there will be any black technology coming out.

After Liu Chi received the movement and bearings, he made a phone call and Chen Song came to pull them away.

Chen Song, these guys naturally also entered the line of sight above.

......

As time passed, it was not time for the acquisition alliance to find a solution.

But a jaw-dropping news broke out on the Internet.

Jingxin Group was blocked by mysterious forces.

On the same day, the stock price fell directly to the limit when it was about to close!

......

“？”

“？？？”

"Have you found out, who is it?" asked Yu Kang angrily to the assistant who came in.

"Mr. Yu, I haven't found out yet. ”

"No matter how you use it, you have to find out who it is. Yu Kang gritted his teeth with a dark face.

10%, the entire company directly evaporated 5 billion, what are you kidding, if you come a few more times, you can't live, then the whole Jingxin wall will fall down to the crowd.

"Yes!"

......

Next!

At the close of yesterday afternoon, the news of Jing Xin's sudden smashing has spread, and they all stretched their necks and waited, watching what the situation was today.

That local tyrant is so domineering. So ruthless, I don't know if it will be ...... today

Countless people are staring.

9.30！

Opening!

"Boom ......"

At the moment of opening, a super big order was smashed directly!

It's like a nuclear bomb exploding!

The salted fish, which originally wanted to struggle upward, was directly fried into a dead fish, and it couldn't turn over.

10%

Down-limit.

！！！

They were all scared silly.

This, this, this is too domineering~~~

It's so ruthless!