universal repair shop

Chapter 101

"Come with me!"

Pang Dahai waved and took the lead towards a corner of the factory building.

Grinding area, in front of two grinding platforms.

Manual grinding is generally carried out on a grinding plate. The plate is square and the size is 300×300mm. The material is forged from cast iron, and the precision grade is not lower than △9, that is, Ra﹤0.2μm.

A set of three plates.

"There is not much time. Let's do something simpler, grinding the cylinder." Under the gesture of Pang Dahai, a man brought up two bead workpieces.

"no problem!"

Tian Ze nodded calmly.

In fact, Tianze scolded him a long time ago. Regardless of the fact that the bead body is only 20cm high and 10cm in diameter, the simple structure cannot be simpler.But if you think that the cylinder is easy to grind, then you are very wrong. The upper and lower bottom surfaces are really not difficult, and the difficulty lies in the curved surface.

Because of this kind of radian grinding, the movement form of manual and motor is often used.

During grinding, the workpiece is clamped on the head of the bed by clamping springs and center holes at both ends. The rotary motion is driven by the main shaft of the machine tool, while the axial reciprocating and forward and backward swinging motions are carried out by manual operation.

Now it's all done by hand, which is not that difficult!

"Let's get started! It's right next to the abrasive."

A flash of fighting intent flashed in Pang Dahai's eyes, and he pointed to the cabinet next to the grinding platform and said.you do not say!Various types of abrasives are placed in the cabinet one by one by category.

"it is good!"

A gleam flashed in Tian Ze's eyes.

After moving, Pang Dahai walked to the cabinet first, opened the cabinet and took out a bottle of abrasive, and evenly coated the abrasive on one bottom surface of the cylinder.Then I saw Pang Hai holding the cylinder and gently pressing the bottom surface coated with abrasive toward the flat plate...

And what about Tianze?

Everyone turned their heads to look, good guy, are you still in a daze?

He stared blankly at the cylindrical workpiece on the platform.

Is this giving up?

A trace of disappointment flashed in the eyes of everyone, and many shook their heads.Among them, Zhuo Yan is the most disappointed, not only because he found Tianze, but also because of Peng Aidang, who thinks that Peng Aidang misunderstood the wrong person and mistook the stubborn stone for rough jade.

The real jade in the rough will not be timid because of Pang Dahai's name, and he doesn't even have the courage to draw a sword. What kind of promise can such a person have?
Tianze is really as everyone guessed.

Timid?

……

Of course not.

Tianze is not in a daze, but is starting the ps system.

"System, load the cylindrical workpiece on the platform."

"Drip! Start loading." In a burst of electronic sound, a holographic image appeared in the blue three-dimensional space of the PS system, which was exactly the holographic image of the cylindrical workpiece on the platform.

"Turn on the scan function."

Tianze then ordered.

Almost immediately, the ps system completed the scan, and the electronic sound rang again, "Drip! The scan is complete, the target is a mechanical workpiece, and the surface accuracy is Ra25μm, which is unbearably rough."

"Immediately turn on the system removal function, the mode is manual mode, and the accuracy requirement is Ra0.08μm." Tianze continued to order.

Generally, after grinding, the dimensional accuracy of the workpiece can reach IT5-IT2, and the surface accuracy can reach below Ra0.2.Considering that Pang Dahai is not an ordinary person, and his level is not comparable to that of ordinary technicians, Tianze naturally has to raise his requirements, otherwise there is no possibility of winning.

"Drip! The manual mode is on."

Amidst a burst of electronic sounds, Tianze finally moved.

Went to the cabinet.

"Great!" Zhuo Yan almost couldn't help cheering, he was happy that he didn't misunderstand the person, he was happy for Tianze's courage, and he was even more happy that Peng Aidang's trust was not in vain.

The others couldn't help but nodded.

No matter whether he wins or loses, Tianze at least dares to fight.

Not a jerk.

Under everyone's watchful eyes, Tianze took out the abrasive agent numbered W20, which is a kind of white jade corundum micropowder. W20 means that the particle diameter is between 20 and 28 μm.It is generally used for rough grinding to remove pre-processing cut marks and achieve the processing accuracy required by rough grinding.

Apply abrasive, grind.

Almost in one go.

After 10 minutes, Tianze completed the preliminary grinding of the upper and lower bottom surfaces of the cylinder.

Then, Tianze took out the abrasive numbered W3.5.

Flat finish grinding is performed again to further improve the surface finish and geometrical accuracy in preparation for the final finish grinding.

After 10 minutes, Tianze completed the regrinding of the upper and lower bottom surfaces of the cylinder.

Then, Tianze took out the abrasive numbered wl.

Start the final fine grinding of the upper and lower bottom surfaces.

Tianze didn't notice that Pang Dahai had already put down the cylindrical workpiece in his hand, and came gently behind him, watching the movements in his hand obsessively.It's so smooth, so perfect, it's as precise as if it's controlled by a computer, it's not like what a human can do!
After 5 minutes, Tianze completed the fine grinding.

So far, the upper and lower bottom surfaces of the cylindrical workpiece have been ground.

When Tianze was about to continue grinding the arc surface of the cylinder, Pang Dahai suddenly rushed up and snatched the cylinder body from him.

"Old Pang, what do you mean?" Tianze couldn't help asking with a dark face when the grinding was interrupted.

Pang Dahai didn't answer, as if he didn't hear Tianze's questioning voice.Instead, the residual abrasive on the upper and lower bottom surfaces of the cylinder is quickly washed away with cleaning fluid.

As the residual abrasive is washed away.

The upper and lower surfaces of the cylindrical workpiece were like pearls covered with dust, finally revealing their brilliance, so bright that they could be used to illuminate people, without any trace left.

As a master fitter, Pang Hai saw more.

Even without testing, Pang Dahai can confirm one thing, that is, the roughness accuracy Ra of the upper and lower bottom surfaces of the cylindrical workpiece is definitely less than 0.09μm, and greater than 0.07μm.

Therefore, Ra is around 0.08μm.

"The old man is convinced."

Pang Dahai looked at the cylinder in his hand and whispered in his mouth.

"Don't continue the competition?"

Tian Ze froze for a moment, but did not respond.

Only then has the grinding of the upper and lower bottom surfaces of the cylindrical workpiece been completed. The most difficult grinding of the cylindrical arc surface has not yet started. Why did Pang Panghai give up?Isn't this too much of a contrast to the strong self-confidence that Pang Panghai showed just now?
"I can't accept it! The old man's best level is only 0.09μm. Is there any need to compare?" Pang Dahai sighed, a little lonely and a little excited.

Lonely for their own skills are not as good as others.

He is the chief technician in the country, one of the hundred technicians in the country!Now he actually lost to an unknown senior technician. What is even more surprising is that this person is still so young, he must be less than half his age, right?How can Pang Dahai not be lonely?

Excited to see such superb craftsmanship with my own eyes.

This is purely for the fitter industry, to have such an outstanding talent.

"Old Pang, I accept it."

Seeing Pang Dahai so upright, Tianze couldn't help but feel admiration in his heart, this is the real master!Not only is the craftsmanship superb, but also the character is more valuable!

"Well, the young man really didn't disappoint us." The major general and the old man praised.

"Xiaotian, good job."

Zhuo Yan couldn't help but praise.

"Uncle Zhuo, is it okay to say now, why did you call me here?" Tian Ze couldn't help asking Zhuo Yan.

This is another helicopter ride, and another competition. Tianze still doesn't know what parts he wants to process, so he is naturally a little anxious.

Zhuo Yan didn't answer directly, but looked at the old major general. The old major general thought for a while and said, "I think so! Young man, you go to the reception area to stay for one night, and we'll talk about it tomorrow."

"Xiaotian, you can stay for one night first! It's almost ten o'clock now." Seeing that Tianze wanted to say something, Zhuo Yan reminded him first.

It's ten o'clock?

Tianze was shocked. His phone was confiscated. Tianze really didn't realize that it was already ten o'clock in the evening.After Zhuo Yan's reminder, Tianze realized that he was indeed a little sleepy, so he stopped insisting.

After all, it's so late.

After saying goodbye to Zhuo Yan and others, Tianze returned to the suite again under the leadership of a soldier.After taking a nice hot bath and eating the dinner brought by the soldiers, Tianze got into bed.

Ps: Thanks to Emperor &;amp; Dubu, sz0420zs, lhwbswz, Poor Monk Robbery F, Empire Unlimited 100 starting coins.

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(End of this chapter)