85. Chapter 85: There is always a loophole in a hundred precautions
Chapter 85: There is always a loophole in a hundred precautions
The next morning, when Kang Chi came to the silicon wafer equipment R&D center, he found that Yan Hui and his team had arrived at the company long ago, and even transported the polishing machine to the assembly workshop in advance, and were dismantling the shell.
Kang Chi walked up to them with a smile and said, “Why are you all here so early?”
Yan Hui looked back at Kang Chi: “What do you think?”
”Uh…” Kang Chi looked at the panda eyes on Yan Hui’s face and said speechlessly, “You didn’t sleep all night?”
”It’s mainly because you kept it a secret yesterday.” Yan Hui smiled bitterly, and then led Kang Chi to the polishing machine, “Let’s take off the shell quickly. Do you want to see if we will take it all off or just a certain part?”
”Well, let me take a look first.”
After Kang Chi finished speaking, he took a flashlight and carefully observed the internal structure of the polishing machine.
In fact, the structural design of the polishing machine is similar. The main difference lies in the precision. If this machine is as Yan Hui said, even every part is accurately copied, then it should be fine.
Half an hour later, after Kang Chi had a brief understanding of the structure, he pulled a stool and sat down to take a breath. At the same time, he asked Yan Hui: “So how much technology have you learned by copying the gourd?”
Yan Hui thought for a moment before answering: “About 70 to 80 percent.”
”Oh, if my guess is correct, then you are unlucky.” Kang Chi pointed to the polishing sheet, “Take down the grinding table of the polishing machine and have a look.”
After receiving the order, Yan Hui immediately started working with a technical team of more than ten people.
Looking at the scene in front of him, Kang Chi was almost moved to tears.
If it was before, he could only disassemble and assemble such precision equipment by himself. It would probably take a whole day just to disassemble the grinding table.
But now, he only needs to sit comfortably and watch, and he can feel the rapid increase of the progress bar. It is so wonderful.
With the close cooperation of more than ten people, two hours later, the grinding table of the polishing machine was dismantled and placed upside down on the workbench, revealing the various parts underneath.
Kang Chi immediately walked up, and after a brief observation, he pointed to a small black cylindrical part and asked Yan Hui: “Do you know what this is?”
”Strong magnetic coil.”
”What is its function?”
”Fix the grinding table?”
”Why not just use screws?”
”Well… the screws may loosen and cause the table to vibrate?”
”Why don’t they just weld it?”
”This…” Yan Hui was stumped and began to fall into deep thought.
In fact, this can’t be blamed on Yan Hui. There are so many parts in a polishing machine. Usually, reverse work is to analyze and understand the core parts first. These non-core parts are analyzed and manufactured by middle and low-level researchers.
We can’t let Yan Hui figure out the principle of the shell design…
”Let me remind you again, in addition to the sixteen strong magnetic coils around the edges of the grinding table, does this polishing machine have other magnetic coils?”
”Of course there are, and there are a lot of them.” Yan Hui said without thinking, “Each robot arm is driven by a motor, especially the largest roller grinding disc, which has a big one…”
He suddenly stopped talking, as if he thought of something.
“You mean…”
”That’s right, this thing definitely has more than just the function of strong magnetic adsorption and fixing the table.” Kang Chi said very confidently, “It may also involve adjusting the magnetic field of the entire device to restrain the slight vibration caused by the grinding disc drive motor!” ”Now let the software engineer check the driver again and find the voltage setting program of these 16 strong magnetic coils. If my guess is correct, their voltage values must be different.”
As Kang Chi explained, Yan Hui’s heart beat faster and faster, and even the veins on his forehead bulged a little…
He had a strong premonition that
Kang Chi was right, and they were getting closer and closer to the truth! Yan Hui suppressed his excitement and turned to a researcher and said, “Engineer Zhang, go and call the software engineering team over!”
”Yes.”
Soon, the software engineers came with a bunch of equipment, and then, under the command of Yan Hui, began to analyze and search for the device driver.
The volume of this work is a bit large, it was not until after four o’clock in the afternoon that they finally found a line of code hidden in a small corner.
”The voltage values are indeed different!”
”Is this… really the reason for this set of electromagnetic coils!?”
”Boss Kang, you are too amazing!”
”…”
Hearing the engineers’ surprised comments, Yan Hui couldn’t help but look at Kang Chi with a complicated expression.
“Congratulations, you have the answer.” Kang Chi said with a smile, “What you need to do next is to quickly analyze the magnetic field of the equipment, and then debug the voltage of these 16 sets of strong electromagnetic coils.”
Yan Hui nodded: “I didn’t expect that the problem would appear here…”
Kang Chi patted him on the shoulder and comforted him: “There is always a loophole in a hundred precautions, especially for such precision equipment, every screw may contain a mystery, and you can’t be perfect.”
”But didn’t you do it?” Yan Hui smiled bitterly, “It only took three experiments to find the key to the problem… No wonder they all say you are a monster…”
Kang Chi just smiled and didn’t make too many excuses on this matter.
Otherwise, it would be a bigger blow to Yan Hui…
In fact, even without Kang Chi, Yan Hui would have discovered this problem sooner or later, maybe tomorrow, maybe next month, or maybe two years…
Research is so mysterious. Sometimes, the problem you think is not critical happens to be the core problem, and researchers often waste a lot of time and energy on it…
With a goal and direction, the next thing is simple.
Kang Chi once again realized the importance of a professional team. He originally thought that when he came to Silicon Letter, he would have to start from rubbing parts by hand and reassemble a polishing machine like before.
As a result, Silicon Letter’s research and development of the polishing machine has reached the point where it is just one step away. Kang Chi only needs to push it lightly, and the problem is easily solved.
And all he has to do is just sit by and supervise (fish)…
Under the day and night efforts of Yan Hui’s team, it took only two days to complete the overall magnetic field debugging of the polishing machine and started the actual test after debugging.
As the robotic arm put the roughly ground silicon wafer into six grinding wheels, the silicon wafer began to rotate rapidly and came into contact with the grinding table.
The entire polishing process lasted about ten minutes, and then after cleaning, it began to enter the testing phase.
At this moment, the entire R&D team couldn’t help holding their breath and staring at the inspector closely.
”No scratches above 0.14nm were found on the surface of all silicon wafers.”
”The surface flatness of the silicon wafer… 1.22nm RMS!”
As the inspector reported the test results in a trembling voice, the whole laboratory suddenly boiled! (End of this chapter)