Even if it's a sophisticated model, it's still a model. Pen fun and pavilion www.biquge.info

The parts in this ladder model have been simplified in order to facilitate processing. However, the essence of this model is to express the machining accuracy, not the design.

But even so, it took the technical engineers a whole day to disassemble the ladder model, measure, build a 3D data model and double the size according to Li Fanyu's requirements.

After getting the data package, Li Fanyu directly threw Manson Clay's ladder model to the engineers, and he drove to the newly completed industrial base.

All the production lines currently in use by Zhengxin are actually unable to complete the processing of parts with tolerances below 15 microns.

So if Manson Clay had sent such a model to Li Fanyu a month ago, he would have to endure it obediently even if he was angry.

Because it is indeed inferior to others, he can't do what others make.

But now, Li Fanyu has this capital to argue with Manson Clay - because the precision machining center of the industrial base has been built!

Zhengxin Industrial Base.

Considering that the processing and production equipment here are all advanced equipment brought by Xapp to unlock the industrial base, Li Fanyu directly asked the pillar to take people to garrison here.

As the iconic A8 with its license plate slowly drove through the gate, the pillars immediately greeted it.

When he learned that Li Fanyu wanted to use a precision machining center, Zhu Zi immediately walked with Li Fanyu to the factory that had just been completed and had a very postmodern appearance.

"Hey, boss, what are you doing this big night?" the pillar saw that Li Fanyu threw a USB flash drive on his finger, and couldn't help but ask strangely.

"Hehe, try the processing level of the precision machining workshop. I'll come by myself, and you go out and keep watch for me. ”

Zhuzi looked at Li Fanyu with a stunned face, scratched the back of his head suspiciously, helped Li Fanyu open the electric switch in the workshop, and walked out step by step.

In the empty and bright workshop, Li Fanyu whistled easily, entered Xapp directly, and called up the information of the precision machining workshop.

After seeing the use of equipment functions and technical parameters on the list, Li Fanyu had a bottom in his heart; because the degree of black technology was too high, he was afraid of being shocked after being discovered, so he selectively snubbed the X super modification workshop and the X super production line. Therefore, after the system was upgraded, the scientific and technological level of the equipment technology exchanged by the system was reduced, so that Li Fanyu, a test user, could apply X technology on a large scale.

Therefore, the equipment in the precision machining workshop at this time looks like something slightly more sci-fi than the commonly used precision machining equipment on the surface.

But in essence, it is a set of wire cutting machines, high-precision CNC milling machines, lathes, boring machines, five-axis machining centers, and some anodizing equipment.

But in terms of precision, it can be said that these devices in the Zhengxin Industrial Base are extremely explosive!

Maybe after being upgraded to level 6, the system considered the current level of science and technology that was empty, and in order to take into account Li Fanyu's upright use of black technology equipment, these devices were restricted.

For example, the group of five-axis machining centers in the workshop can control the minimum tolerance in the machining process to 15 microns on the open surface, which is equivalent to the level of the most advanced machining centers in the current time and space.

However, the system opened the back door for Li Fanyu!

After the research and development of the system, the processing capacity of the equipment can be temporarily improved. Properties such as processing speed, accuracy and volume.

That's Hapi.

After reading it, Li Fanyu had a score in his heart. The 1:36 ladder model parts in the USB flash drive were input into the 3D metal printer, and in a short time, more than 400 No. 3 super aluminum alloy blanks were printed.

In fact, after the upgrade, the X3D metal printer has printed aluminum alloy parts that have reached the tolerance requirement of 20 microns. But Li Fanyu of Sao Bao is like going further!

The embryo is too small.

At a perverted scale of 1:36, even the original 10-meter-long part is only 27 centimeters below this scale. And these embryos that Li Fanyu wants to process, after being reduced according to the proportion, some are even only 3.4 mm in size!

To put it mildly, such a "blank" may not be as large as an iron chip cut off from the top of the part when the normal machining center is working.

If it weren't for the convenience of processing, Li Fanyu set aside a base for fixing the machining center when printing the blank, and I was afraid that the clamp would not be able to clamp it......

Fortunately, after the kryptonite, the five-axis machining center in the workshop has become an extremely precise guy. Otherwise, it would really be enough for Li Fanyu's head to hurt for a while.

After krypton, the cutter of the five-axis machining center is directly replaced with a set of cutter heads thinner than the tip of the needle according to the size of the workpiece. Li Fanyu lay in front of him and watched for a long time, but he couldn't see what the shape of the knife was!

How small do you mean it has to be?

But as he pressed the button, he saw the machining center start working at a sci-fi speed with a slight noise, "up and down" the embryo the size of a grain of rice. Li Fanyu is still shocked, don't want it!

As the cutter heads on several axes moved, he clearly saw that the surface of the embryo had changed color!

From the original silvery white of the aluminum alloy, it has become a shiny bright silver with the movement of the invisible cutter head!

When the first embryo was processed, Li Fanyu took out the laser caliper in the precision machining workshop to measure, and was surprised to find that ......

This embryo, there are no tolerances!

What is a tolerance? Tolerance is the amount of allowable variation beyond the actual dimensional value required by the part. For machinery manufacturing, the purpose of formulating tolerances is to determine the geometric parameters of the parts, so that the amount of change is within a certain controllable range, so as to achieve the role of interchange or fit.

Why do you need tolerances?

Because there is no processing equipment in the world that can process with absolute precision!

For example, a factory wants to make a set of screws. The outer diameter of the screw is 10mm, and the inner diameter of the nut is also 10mm. Theoretically, this size would be perfect for inserting the screw into the nut.

However, in the actual processing process, any processing equipment can not process the perfect "10mm". If the screw is a little thicker and the nut is a little tighter, then you won't be able to plug it in!

It's very embarrassing,

Therefore, in order to make the size of the part not affected by the machining accuracy too much, designers can only set tolerances on the machining drawings. Therefore, we can often see that the diameter of the screw is 10mm-0.5mm, and the inner diameter of the nut is 10mm+0.5mm.

What does that mean?

It is to set a change index for the parts and tell the workers: Nima, don't make the screws rough and the nuts tight when you are processing!

Therefore, tolerance, strictly speaking, is still a kind of helplessness and compromise because the processing is not precise enough.

But the parts in front of Li Fanyu were not!

Forehead.....

That's not right, maybe the part in front of him has tolerances.

But at least...... Nowadays, the most accurate laser calipers in the industrial field cannot measure!

What is this concept?

If Li Fanyu is thick-skinned, he can call it "absolute precision"!

What is this "absolute precision" for?

The simplest point is a watch! Why are Jaeger-LeCoultre's or Rolex watches so expensive? Do you really think that a few diamonds with a layer of gold on the outside can be worth hundreds of thousands or even hundreds of thousands?

Pattern!

Figure milk obligation!

In the watch industry, what is sold is always precision!

When a small complex and sophisticated machine measures the feeling of time for you with outrageous precision, it can be worthy of its value!

“I’m-rich……”

"Master is going to get rich......"

Thinking of this, Li Fanyu muttered.

completely forgot that he was already a billionaire.

As a person in the industrial field, when he sees any equipment that can process precision parts, he will have the feeling that Lu Bu opened the belly pocket of Diao Chan, Guan Yunchang rode on the back of Chitu's horse, and opened the E disk of the computer stupidly.

It was a joy from the heart!

It's addictive!

So after the first part was completed, Li Fanyu couldn't stop at all!

The second, the third, the fourth, the fifth......

It wasn't until more than three o'clock in the morning that the east brightened the belly of the fish. He used five red soft girl coins to carefully pack all the parts of the ladder model that had been machined.

Satisfied, I returned to the R&D center.

When the technical engineers saw Li Fanyu open the soft girl coins folded into triangles, which were simply extremely fine parts, their knees were weak!

And when they brought precision calipers and inspected these parts one by one, there were a few engineers on the spot who couldn't do it.

These are the people who deal with parts and sizes on a daily basis, but they swear they have never seen such precision parts!

Never!

After watching it for more than ten minutes, an engineer collapsed on the ground with a "poof", wiped his tears and muttered: "Woo woo, it's really precise, but such a small part, how do you let us assemble it!"