When NC apprentices have a task system

Chapter 12 Must be Xu Yang?
It should be mentioned here that the drill hole cannot be drilled through, otherwise the screw will not be firm, and it also depends on the length of the screw and the thickness of the fixture parts. Generally, half or 1/3 of the depth is drilled.

With the self-describing function, the next drilling will be much faster. Xu Yang directly presses the fixture part with one hand, and drills with the other hand. As a result, there are two sets of test frames with a total of more than 100 holes, less than 5 All drilled in minutes, several times faster than before.

After drilling the hole, the next step is tapping.

If drilling is the prerequisite for assembly, then tapping is the embodiment of the effect after assembly, and it depends on whether it is firm or not.

Tapping is easier than drilling, but there are a few things to keep in mind:

(1) The hole of the threaded bottom hole on the workpiece should be chamfered, and both ends of the through hole thread should be chamfered.

(2) The position of the workpiece clamp should be correct, and the center line of the threaded hole should be placed in a horizontal or vertical position as far as possible, so that it is easy to judge whether the axis of the tap is perpendicular to the plane of the workpiece.

(3) At the beginning of tapping, try to put the tap as straight as possible, then apply pressure to the tap and turn the hand. When cutting 1-2 turns, carefully check and correct the position of the tap.Generally, when cutting into 3-4 circles of thread, the position of the tap should be correct.In the future, it is only necessary to turn the twisting hand, and no more pressure should be applied to the tap, otherwise the thread profile will be damaged.

(4) When tapping, every time the twister is turned 1/2-1 turn, it should be reversed for about 1/2 turn, so that the chips can be easily discharged after being broken, and it can reduce the phenomenon that the cutting edge is stuck due to sticking chips.

(5) When encountering a screw hole that cannot be tapped, the tap should be withdrawn frequently to remove chips in the hole.

(6) When tapping the screw holes of plastic materials and 304 steel, add machine oil to lubricate, otherwise the tap will be easily broken and the threads will slip.

(7) When changing to the next tap during the tapping process, it should be screwed into the tapped thread by hand until it can no longer be screwed in, and then turned with a wrench.When the end cone is tapped and withdrawn, it is also necessary to avoid turning the twisting hand quickly. It is best to unscrew it by hand to ensure that the quality of the thread that has been tapped will not be affected.

……

Far away.

Of course, Xu Yang is processing Bakelite fixture parts, so there is no need to add oil to lubricate, and there is no need to turn clockwise twice and then back out twice, and it can be done in one step.

The 2.5mm hole is tapped with an M3 tap.

The 3.3mm hole is tapped with an M4 tap.

After selecting the taps, Xu Yang started the racing tapping mode, one tap per second, and all taps were completed in less than 5 minutes.

After drilling and tapping, it is time to tighten the screws. This Xu Yang is very skilled. Of course, there is one thing to pay attention to, that is, the screws should not be screwed to death, which is easy to hair.

Once threaded, the screw is completely useless, and it cannot be removed during maintenance, and the delivery will definitely be returned.

Of course Xu Yang is not too worried, because his drilling and tapping are at the perfect level, as long as it is not the first time to screw the screw, the screw will not be broken.

The frame structure of the assembled test stand is as follows: bottom plate, side plate, rear baffle, front baffle, front inclined plate, cover plate…

What should be mentioned here is that the test stand is actually a box. Since it is a box, it must be opened and closed, so hinges must be installed.

After 20 minutes, Xu Yang put down the screwdriver, looked at the two assembled test frame frames in front of him, and couldn't help showing a satisfied smile.

If I have to describe it: beautiful, symmetrical, just like a work of art.

The key is the time: about 30 minutes, which is 30 minutes faster than before.

"Ding! The task of NPC CNC master Xu Hui is completed: money +200! Experience +200! Xu Hui reworked the test frame experience!"

After getting another 200 yuan, Xu Yang was very happy.

But what is the use of this experience of repairing the test rack?

Meanwhile, in the office.

"What? Was it returned again?"

Lin Meiya, Xinsheng's purchaser, frowned while answering the phone.

"Oh, got it, we'll send someone to pull it back and go back to work right away."

After hanging up the phone, Lin Meiya asked the engineer Li Zheng and the carving master Xu Hui:

"Who assembled the test rack the day before yesterday?"

"You have to ask Xugong about this."

Li Zheng was taken aback when he heard the words, and then directly threw the stall to Xu Hui, eavesdropping while drawing and programming.

Indeed, Xu Hui was in charge of fixtures and such.

Hearing this, Xu Hui frowned, then pondered for a while and said:
"what's the situation?"

"what's the situation?"

"Three sets of test racks, two sets of screws fell off, and there were threaded hairs. I was scolded bloody by the purchase of Qianshida. They said they would return the products and warned us that if there were such Incident, they will terminate the cooperative relationship."

"Oh, let's talk about it first!"

Xu Hui frowned when he heard the words, but he did not say who assembled it. After all, it has already happened. Now is not the time to pursue responsibility, but to solve the problem as soon as possible.

"Zhong Xing! Zhong Xing, you have hurt me."

Xu Hui knew that Zhong Xing was on day shift the day before yesterday, and it seemed that he assembled the three sets of test racks, and he assembled them while talking on the phone with his girlfriend.

"Xugong, you guys have to make up for it later, and send it over early tomorrow morning."

Hearing this, Lin Meiya couldn't say anything, after all, Xu Hui was also a master, so talking too much would hurt people's face.

"Xugong, is this Xu Yang?"

At this time, Li Zheng sneered secretly.

"This Xu Yang is stupid, has poor hands-on ability, and is unreliable in his work. It's better to get rid of this kind of person as soon as possible."

"If you look at Zhong Xing, it's different. He has a flexible mind and is serious and responsible in his work. He should have been promoted and raised a long time ago."

"Li Gong, you are wrong."

Hearing this, Xu Hui shook his head and said:
"It's Zhong Xing!"

"what?"

Li Zheng was stunned when he heard this, the sarcastic expression on his face suddenly stopped, and he asked uncertainly:
"Clock Star?"

XCMG, are you right?
There is nothing to say about Zhong Xing's skills. How could he make such a low-level mistake? It's impossible.

It must be assembled by Xu Yang, it must be, only he will make low-level mistakes, if you don’t believe me, let’s ask him now.

"Xu Yang?"

Just when Xu Hui was about to explain, suddenly he seemed to remember something, and immediately slapped his thigh and shouted:

"not good!"

Before he finished speaking, Xu Hui pushed open the door of the office and rushed out.

It is said that Xu Yang has just finished assembling, so he is ready to go to the water dispenser to drink some water to refresh himself.

The Xinsheng factory provides free drinking water. Of course, it is only a 5 yuan bucket of bottled water, but it has complete cooling and heating functions.

"Xu Gong?"

"Li Zheng?"

Just when Xu Yanggang took a step, he saw two figures rushing out of the office, who else could it be if it wasn't Xu Hui and Li Zheng?
Could it be that they also came out to hold water?
But doesn't the office have a separate water dispenser?
Weird!

Xu Yang secretly guessed.

Thinking of this, Xu Yang hurried up, ready to take the initiative to help fetch water.

　Rejuvenating the country through industry, CNC technology!
　　
　
(End of this chapter)