"Okay, let me take a look first and study it together." Liu Chi nodded, took the USB disk handed over by Li Haiqing, and plugged it directly into his office computer.
The four people saw Liu Chi operating the computer and gathered around him.
Liu Chi clicked several times on the screen, found the folder, and clicked to open it.
Half a minute later, Liu Chi exited the computer and said: "This screen is too small and inconvenient. Come to my laboratory to see it."
"..."
"Fuck."
"Come on, Liu Chi, you are a senior in the laboratory."
"How much does it cost?"
"A rich man."
"Okay, let's get down to business first. Then you can build one yourself." Liu Chi said while turning on the control computer of the service cluster.
"You said it's easy, how much does this cost?"
"It's not much. There is a server cluster on the upper level with more than 100 million. The total number of these devices is about one billion."
"Depend on...!"
"Stop talking, it's annoying."
"!!!"
"..."
Liu Chi shook his head helplessly, inserted the USB disk into the USB interface, and clicked on the folder he just looked at.
"Are you using Sanjixin?" Liu Chi looked at it for a few times, frowned and asked.
"Yes, the three-movement core can very well ensure accuracy and balance."
"Three movements can indeed ensure accuracy very well, but if the accuracy of the shaft and bearings is not good, it will have the opposite effect." Liu Chi enlarged the axis position and pointed at the bearing position on the screen and said: "What is the accuracy here?
Does it meet your design requirements?”
"The data is OK."
"Is there any problem with the upper and lower bearings?"
"no problem."
After Liu Chi watched for half an hour, he asked a little puzzled: "Have you not considered the role of temperature?"
"Temperature???"
"You didn't think about it, right?" Liu Chi added: "It heats up and shrinks when it's cold, brother?"
"We will naturally take this into consideration, but this is already the highest-precision bearing we can buy, and we asked the manufacturer and they said it can meet our requirements." Chen Song said a little unsure.
"They said, if you believe it, have you passed the test?"
"We are not you, we have a ready-made laboratory." Li Haiqing said with contempt.
"That's right." Liu Chi nodded and said, "If the accuracy cannot be achieved, it is basically a material problem."
"The main reasons for the accuracy of machine tools are normally divided into three points; 1. Changes in the ambient temperature of the workshop; 2. Motor heat and mechanical motion friction heat."
"3 The influence of cutting heat and cooling medium causes uneven temperature rise in various parts of the machine tool, resulting in changes in the shape accuracy and machining accuracy of the machine tool."
Seeing that the three of them were silent, Liu Chi said: "Let me give you an example. A 70mm × 1650mm screw is processed on a CNC milling machine with ordinary precision. The workpiece milled between 7:30-9:00 in the morning is the same as the workpiece milled between 2:00-3 in the afternoon.
Compared with the workpiece processed by :30, the cumulative error change can reach 85m."
"Under constant temperature conditions, the error can be reduced to 40m!"
"Another example is a precision double-end face grinder used for double-end grinding of thin steel workpieces with a thickness of 0.6 to 3.5mm. During acceptance, the 200mm × 25mm × 1.08mm steel workpiece can achieve mm dimensional accuracy and curvature.
Less than 5m in total length.”
"But after 1 hour of continuous automatic grinding, the size change range increased to 12m, and the coolant temperature increased from 17°C at startup to 45°C."
"Due to the influence of grinding heat, the spindle journal elongates and the spindle front bearing clearance 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, and maybe there was a way from above, so he asked the three of them: "By the way, what grade of bearings are you using now?"
"P2! This is the highest level you can buy."
"What we buy is still imported." Chen Song added.
"That should be no problem, but in my opinion, the accuracy of your bearing still cannot meet your design requirements. Under the action of three-party forces, if it is at room temperature, the accuracy error will be at least more than 0.05mm."
"And I just looked at your design requirements and your accuracy is 0.03mm."
"What should we 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 movement is higher than that of using three."
"Think about it, with one movement, there are only two bearings in total. If you use three movements now, the movement has six bearings, plus the four on the shaft, it becomes 10. Tolerance tolerance, you still have
We have to consider the role of force, and the error is not only large?"
"I think what Liu Chi said makes sense." Li Haiqing said to Xiao Yunhao.
"How about we get one and try it out first?"
"Can."
"I'll also help you ask if there are bearings and movements with better precision." After Liu Chi finished speaking, he closed the folder on the screen.
"OK."
"Come on, it's almost dinner time and I'll treat you to dinner."
"Wait a minute, one hot water bottle at a time."
"You..." Liu Chi rolled his eyes.
"I fight landlords for the land. I must take one back with me when I come here. I can't get it online." Li Haiqing said confidently.
"Okay, I'll give you one." Liu Chi shook his head helplessly.
"..."
After sending these shameless guys away, Liu Chi called Chen Luguang and mentioned the movement and bearings.
The higher-ups naturally attached great importance to Liu Chi's request, and they naturally paid attention to this matter.
Who knows if another black technology will come out.
After Liu Chi received the movement and bearings, he called Chen Song to take them away.
Chen Song and the other guys naturally came into view from above.
...
As time goes by, the acquisition alliance has not yet found a corresponding solution.
But jaw-dropping news broke on the Internet.
Jingxin Group was blocked by mysterious forces.
The stock price fell directly to the limit when it was about to close that day!
...
"?"
"???"
"Have you found out? Who is it?" Yu Kang asked angrily to the assistant who came in.
"Mr. Yu, we haven't found out yet."
"No matter what method we use, we must find out who it is." Yu Kang gritted his teeth with a dark face.
10%, the entire company will directly evaporate 5 billion. What a joke, if it is still alive in a few days, then the entire Jingxin will fall down and everyone will pile up.
"yes!"
...
The next day!
The news that Jingxin's market was suddenly hit at the closing price yesterday afternoon has spread, and everyone is craning their necks to wait and see what will happen today.
That rich man is so domineering and ruthless. I wonder if he will be like that today...
Countless people are watching.
9.30!
opening!
"boom......"
At the moment the market opened, a super big order was placed directly!
It's like a nuclear bomb exploding!
The salted fish that originally wanted to struggle upward was blown into a dead fish, unable to turn over.