Chapter 180 You figured out the servo motor from the watch?

Since the boast had already been made, Li Jiajun stopped bickering with those silly Netizens in the bullet comments.

He sat up straight again, and the expression on his face switched instantly from his previous playful grin to focus mode.

"Alright, if we want to build this robot dog of ours that can guard the house and help the elderly carry rice, just talking about it won't cut it."

Li Jiajun picked up a marker and wrote two large characters heavily on the whiteboard behind him — 【Heart】

"Everyone knows that whether it's a human or a dog, if you want to run fast, jump high, and be able to carry heavy loads, what is the most critical thing?"

Li Jiajun tapped the whiteboard and answered his own question: "It's muscles! It's the heart! For a robot, that means — servo motors and precision reducers!"

Although the Netizens in the livestream usually liked to joke around, when they heard this kind of hardcore popular science, quite a few of them perked up their ears.

"Servo motor?"

"Don't understand, someone below explain it."

"Simply put, it's the power source for the robot's joints, equivalent to human muscles."

Li Jiajun looked at the bullet comments, nodded, and continued: "That's right, it's muscles. However, this robot dog of ours, according to what Uncle Liu gave... cough cough, according to my design requirements, it needs to be able to run on mountain terrain and carry eighty kilograms of stuff up stairs. This requires its 'muscles' to be very small in volume, but very powerful!"

At this point, Li Jiajun sighed, a look of helplessness appearing on his face.

"But on the current market, motors that can satisfy this kind of high torque, high explosiveness, and are only the size of a fist, are basically monopolized by those few giants abroad."

"Whether it's from Switzerland, Germany, or Little Sun."

"Not to mention they are insanely expensive, the key is that they often restrict purchases. Seeing that you are an Eastern Country enterprise, they guard against you like you're a thief."

The more he talked, the angrier he got, and he slammed the marker onto the table.

"I don't believe this curse! Can't we Eastern Country people even build a motor? Do we have to beg the foreign masters?"

"Today, I am going to challenge this so-called pearl on the crown of industry!"

These words made the Netizens in the livestream feel hot-blooded.

"Well said! Main Streamer is tough!"

"Support domestic products! Beat the foreign goods!"

"Although I think the Streamer is bragging, I love hearing this!"

"Waiting for the Streamer to hand-craft a motor!"

Li Jiajun looked at the screen full of support, feeling great.

However, having made such bold statements, he actually had no idea how to proceed.

Although he had a golden finger with heaven-defying comprehension, the activation of the golden finger also required a medium, a source of inspiration.

"Since I want to build something precise, I have to see what the most precise thing in the world is."

Li Jiajun muttered to himself and opened the video website on his computer.

He didn't search for those boring industrial tutorial videos, but instead, with a sudden impulse, he inexplicably typed the four characters "Swiss luxury watch" into the search box.

Soon, an ultra-high-definition documentary about the craftsmanship of top-tier mechanical watches popped up.

Li Jiajun clicked play and cast the screen onto the big screen behind him.

Accompanied by soothing and elegant classical music, an extremely complex mechanical watch movement appeared on the screen.

Countless gears, so small that they needed a microscope to be seen clearly, meshed and rotated within a tiny space.

Those escapement mechanisms, hairsprings, and mainsprings glittered under the lights with the cold luster unique to metal, and every beat seemed to contain a certain rhythm of the universe's operation.

The Netizens in the livestream were a bit confused when they saw this scene.

"???"

"Weren't we going to build a motor? Why are we watching watches?"

"Is the Streamer wanting to buy a watch? Starting to do cloud shopping online?"

"Good grief, this watch looks unaffordable, the Streamer is getting cocky!"

"Stop arguing! This is called looking for inspiration! Although I don't know what kind of inspiration you can get from looking at a watch."

Li Jiajun completely ignored the mockery from the bullet comments.

His attention at this moment was completely captivated by the "planetary gear" structure running on the screen.

That structure was too beautiful.

Large gears drove small gears, and the planetary gears revolved around the sun gear while also rotating, achieving extremely complex speed change and torque transmission within a tiny space.

"This structure..." Li Jiajun's eyes gradually became fixed.

He stared intently at the constantly rotating planetary gear, while the internal structure of a servo motor involuntarily surfaced in his mind.

Traditional motors, in order to pursue high torque, often require a huge volume and multi-stage gearboxes.

If the volume is large, the robot dog becomes heavy and not flexible. If the volume is small, the torque is insufficient, and it can't carry things. This is a contradiction.

"But..."

"What if this planetary gear structure was integrated into the interior of the motor's rotor?"

Li Jiajun's pupils began to dilate slightly, and all the surrounding sounds — the Netizens' bullet comment alerts, the chirping of cicadas outside the window, the humming of the computer host — instantly disappeared from his ears.

In his world, only the gear set in front of him, constantly rotating, meshing, and transmitting power, remained.

That was not just gears.

That was the law of power transmission.

That was the perfect balance of space and efficiency.

That was the ultimate manifestation of mechanical aesthetics.

Just at that moment.

Boom!

It was as if a bolt of lightning had fiercely split the fog in his mind.

In fact, even without the golden finger of heaven-defying comprehension, he could have realized something; he was a genius himself.

But he had this golden finger.

That made it even simpler.

And so —

【You watched the watch's planetary gear structure, combined with micro-mechanical transmission theory, and gained insight into the design essence of a high-torque density servo motor! You have had an epiphany!】

Countless data, formulas, and structural diagrams, like a bursting flood, flooded into his mind frantically.

A brand-new motor structure, one that had never appeared in this world, clearly took shape in the depths of his consciousness.

"I have realized it!"

Li Jiajun let out a sudden roar, startling the Netizens who were dozing off in the livestream.

Before everyone could react, they saw Li Jiajun, like a madman, shoot up from his chair.

He grabbed the black marker on the table, rushed to the whiteboard, and wiped away the two characters "Heart" he had written earlier.

Then, he faced the camera and revealed a mysterious smile: "Everyone, the following footage belongs to core commercial secrets. In order to prevent technology leakage, I must perform a little technical processing." He had taken such measures before.

After speaking, he didn't turn off the livestream, but grabbed a rag, scribbled a few times on several key positions on the whiteboard, and drew a few big "X"s.

Then, he began to draw some partial, confusing-looking lines around those "X"s.

"Swish swish swish! Swish swish swish!" The tip of the pen rubbed rapidly against the whiteboard, making a harsh and urgent sound.

His hand speed was astonishingly fast, almost creating afterimages.

Lines, circles, and complex cross-sectional diagrams rapidly took shape under his pen.

However, the most critical connecting parts were all blocked by his body or replaced by those "X"s.

The Netizens in the livestream watched, scratching their ears and cheeks in frustration.

"Damn? Streamer, your censorship is way too thick!"

"Blocked all the key parts? I took off my pants and you show me this?"

"What is this drawing? Is it ghost runes?"

"No... look closely... although the key structure isn't complete, this seems to be some kind of extremely precise mechanical transmission structure!"

"I study mechanics, but how come I don't understand the logic? This gear meshing method... it seems to violate common sense, but it also feels reasonable?"

"Stop arguing! Looking at the Streamer's stance, it seems like he's really done something big! Even just seeing a rough idea, it feels awesome!"

Li Jiajun couldn't care about looking at the bullet comments at all.

He was currently in a state of extreme excitement.

That pleasure of inspiration bursting forth made his scalp tingle, and every pore in his body was cheering.

Although he intentionally concealed the core data and tolerance fits, the overall design concept had already presented a breathtaking mechanical beauty on the whiteboard.

Five minutes.

It only took five minutes.

The originally blank whiteboard was already filled with dense lines, data, and structural diagrams.

"Hoo—"

Li Jiajun stopped his pen and let out a long breath of stale air.

He looked at the design drawing on the whiteboard, of which only he could understand the full picture, and a fanatical light flickered in his eyes.

That was a work of art.

That was the pinnacle of industrial design.

That was the source of power that could make the whole world tremble.

He turned around, using his body to block most of the view of the whiteboard, revealing only a corner.

Facing the camera, the expression on his face was one of irrepressible excitement, along with a kind of "I am a genius" smugness.

"family! Did you see that!"

Li Jiajun pointed to the corner of the gear that was exposed, his voice trembling slightly with excitement.

"This is the answer!"

"This is what we need — a high-torque density micro servo motor!"

He picked up a pointer and pointed to the most core gear structure in the diagram, beginning to explain excitedly:

"Everyone look here! I won't go into detail about the specific structure, lest those foreign devils steal the technique. But I can tell everyone the principle!"

"I abandoned the traditional gearbox design and directly integrated the planetary gear structure of that kind of Swiss watch into the interior of the motor's rotor!"

"This is a brand-new gear meshing method! I call it — Embedded Planetary Differential Reduction Structure!"

"It utilizes multiple small gears to share the load simultaneously, dispersing the force evenly. Because of this, even if the volume is only the size of a fist, it can erupt with a terrifying torque capable of prying open a small car!"

"And! Because the structure is compact, its response speed is extremely fast! The precision is extremely high! The error won't exceed one-hundredth of a strand of hair!"

"With it, our robot dog, let alone carrying rice, even if it's carrying gas canisters up a mountain, it will be moving as fast as flying!"

The more Li Jiajun spoke, the more excited he became, completely immersed in his own technical world.

He unconsciously read his inner mockery out loud as a voice-over: 'Hmph, let those foreign devils engage in technical blockades and still want to see my blueprints? No way. Dumbfounded now, aren't you? I can realize it just by watching a watch, pissing you all off.'

In the livestream, there was a moment of silence.

Hundreds of thousands of Netizens were all confused by Li Jiajun's operation.

Although they didn't see the full picture, just hearing this principle, it felt inexplicably awesome!

Realizing a top-tier motor just by watching a watch documentary?

Is this something a carbon-based lifeform can do?

Immediately after, the bullet comments, like a volcanic eruption, frantically flooded the screen.

"???"

"I don't understand, but I am greatly shocked!"

"Realizing a motor from a watch? Streamer, are you a devil?"

"Newton's coffin lid is about to be unable to be held down! This cross-field leap is too big!"

"I am a Boeing engineer, I just watched the whole thing on my knees! Although the key parts were censored, just based on this tip of the iceberg revealed... this structure is simply a genius design! If it can really be built, it will absolutely be revolutionary!"

"Stop bragging, upstairs, Boeing engineer my foot, I'm the Jade Emperor!"

"It's true! Boeing and Airbus engineers followed the Streamer's livestream room overnight! I saw several verified big shots come in!"

"Damn? Really big shots?"

"This brain is simply amazing, if I had this brain, wouldn't I be able to get into a junior college?"

"Upstairs, do you have some misunderstanding about junior college? This brain can at least get into Tsinghua... Peking University Jade Bird!"

Looking at the screen full of "worship" and "shock," a smug smile appeared on the corner of Li Jiajun's mouth.

This was the effect he wanted.

Technical crushing!

Intelligence crushing!

And he also preserved the core secrets, perfect.

However, the motor was only the first step.

Having strong muscles alone wasn't enough; it also needed a developed cerebellum to let the dog walk steadily without stumbling.

Li Jiajun moved his gaze away from the whiteboard, his eyes becoming deep. Since he had a strong heart, the next step was to solve the "balance" problem.

He looked around, and his gaze suddenly locked onto that big yellow dog sunning itself in the factory courtyard.