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Zeng Yong's words suddenly made Yun Kai dumbfounded, after he looked at this drawing, he just thought about the general processing technology, and finally assembled something, but he didn't think about it at all.

Outside machining factories are generally only responsible for machining, and high-precision parts like this will not be assembled in these factories outside. This is related to the key assembly technology and assembly process, and it is a technology with a high level of confidentiality.

This is also something that reflects the core competitiveness of an enterprise, and no enterprise is willing to share it with others casually.

The processing of complete sets of parts is much higher than that of individual parts, especially some high-precision equipment parts.

"Zeng Gong, I also know this situation, but the technical situation outside is also known to you, such high-precision parts, not only do not have that kind of precision machined parts, but also do not have that high technology......" Yun Kai said to Zeng Yong with a wry smile.

"Zeng Gong, you just tell Sù Yun Boy if we can process it......" Sun Qianming said to Zeng Yong with a frown.

This is the above thing, just because this is too difficult, Zeng Yong was urgently handed over here overnight last night, I am afraid that after signing the contract, I will not be able to provide parts according to the requirements of the drawings, and then it will be embarrassing, I want to know what kind of equipment Yunkai is producing, and what to do next, it is estimated that it will be difficult.

"Yes, Zeng Gong, see if this can meet the design accuracy on the drawing...... Yun Kai also said expectantly. He even had a hunch that these two spindles might even account for a very large proportion of the production cost of the entire product.

Zeng Yong saw that Sun Qianming and She Hongwen were both looking at him, and he also told himself at the beginning that he had to give this job to the next no matter what, this was the task arranged by the above. But he still has no bottom in his heart: "Boss Yun, there is definitely no problem with this product, but it meets the accuracy requirements of the design 100%, I dare not guarantee it, and I can't guarantee it......"

"What if the tolerance is 20 percent?" As soon as I heard Zeng Yong say this. Yun Kai couldn't help but get anxious.

If you can't guarantee accuracy, what's the use of doing it?

"Fifty percent?" Seeing Zeng Yong shaking his head, Yun Kai suddenly felt a pain. This job is indeed a painful thing, and the processing accuracy is high, not to mention it, but the assembly gap. The amount of production reservation is actually higher than the micron level, if the Dabashan base can't do it, where can he find a company that can produce it?

German Siemens Mechanical Real Yàn Room?

American General Mechanical Real Yàn Room?

Alstom's mechanical real room in France?

It's simply not possible! Every year, they have a large number of machining in China, and some precision machining enterprises specializing in processing foreign trade parts do it.

The foreign-funded machinery processing factories in the cross-strait industrial park in Rongcheng that can carry out precision machining are basically helping their real room produce some precision parts.

They simply don't have much time to do their unprofitable outsourcing.

"Boss Yun, you are also engaged in machinery. It should be understood that even if the tolerance is doubled, the gap is only expanded to one μ, 3onetsia is not a special material, there will be slight deformation in the temperature difference range at room temperature, we must have at least ten or twenty degrees of temperature difference change a day, and even a temperature difference of more than forty degrees a year. Even if we process and assemble this part, there is no way to ensure the accuracy when dealing with you, and it has been ...... in our workshop" Zeng Yong's explanation was very detailed and reasonable, which made Yun Kai and the other two bigwigs frown.

However, in the ears of Liu Hu, who began to perform his bodyguard duties as soon as he entered the office, this was even more confused. Zeng Yong said so much, he didn't understand it at all, but he still had a feeling of uncertainty.

These are all Gundam things, so you have to learn them and take them out to fool people in the future. can definitely bluff people who know but are not very proficient, and as for those who don't understand, they are even more talkative.

A few people can know that even the increase and decrease in temperature can affect the deformation of steel. But it would be nice if the guys could explain what a μ is.

Therefore, although I didn't understand it at all, I felt that this high-end and high-grade Liu Hu stood up straight on the side, listened carefully, and memorized hard, so as not to lose the boss's face.

"Indeed, I didn't think of this problem at the beginning, Zeng Gong, if we carry out the final inspection in your production workshop, and then we don't consider the deformation or something, and the tolerance range is not large, can it be processed?"

"I can't guarantee this......" Zeng Yong's words, Sun Qianming wanted to beat him.

"How sure can you be that the processing will be successful?" Yun Kai also knew that it seemed that this matter really took the time to ask Xingmeng No. 9 if he could enlarge the tolerance range a little more, otherwise, there would really be no way to do this job.

"If the tolerance range can be increased by 20 percent, there is a 60 percent certainty......" Zeng Yong closed his eyes and thought silently for a while before raising his head and saying to Yun Kai.

"Okay, let's sign the contract according to this technical standard, and make a note in the contract...... "Anyone who does machinery knows that in the design process of all mechanical equipment, design engineers will improve the design accuracy more likely, in order to achieve the assembly accuracy they really want."

That is, there is a good chance that the design drawings are one or two notches higher than the level of accuracy actually required.

However, this set of drawings was thrown out by Xingmeng No. 9, whether there is also a design reserve, Yun Kai really dare not guarantee it.

This spindle will need to reach the highest revolution in the future, but it is 300,000 revolutions! Even if it is used according to 80% of the load, there will be 240,000 revolutions per minute, don't look at 20% only o.1μ, 700% of the head wire, but what impact on the final performance, no one can say.

"Okay...... Boss Yun, though I know there are some things that shouldn't be asked. But can you tell me what kind of equipment this spindle is used on? I'm really curious about how accurate this whole set of equipment must be! Zeng Yong sighed helplessly and agreed with Yun Kai's opinion.

No matter how hard he racked his brains, he really couldn't figure out what kind of equipment could use the spindle of such a high degree of precision. According to what he learned, the spindle of this precision is more than one or two levels higher than any equipment currently known in the world, and according to the existing technical conditions, the tolerance design standard of this spindle. Basically, it has reached the standard of ITo level or even ITo1 level (in the "National Standard for Tolerance and Coordination gB18oo~18o4-79", the standard tolerance is expressed by IT, and the grade is ITo1, ITo, IT1~IT18, a total of 2o grades, of which IT18 has the lowest accuracy grade. Basically, it is not used, in the machinery industry, the lowest accuracy level is the first process of casting the blank or the material cut by the wire of fire is this grade, and IT 4 or above, basically this accuracy level is rare in the whole world...... In the words of the gourd master, IT4 level can also be achieved by means of confidential grinding or graded processing, which is above the accuracy level. It's basically non-human processing! ）

Even in some specific cases, it can be seen that the highest level of accuracy has been reached relative to class zero!

The bus on the base belongs to the highest level of secret scientific research and manufacturing base of the Chinese military, and the highest precision level of production is only IT3, most of the parts tolerance level is IT4, and other precision grades that can be achieved with equipment below IT5 level do not need to be produced at their Dabashan base.

The most important thing is that, in addition to some of the world's top production equipment can process IT4 precision parts, parts above this level must be achieved by experienced technicians by hand!

So. He couldn't help but be curious about which planet Yun Kai got this business from.

"Okay, I'll just get it straight, you're all the ones who can keep it a secret anyway, although at the beginning I was talking about this is the key precision spindle of a five-axis machining center. At that time, because I didn't know, this is the main shaft of an industrial machine tool, once the assembly is completed, it can be processed for parts that can only be produced by hand from level 1 to level 3, of course, this is theoretical......" Yun Kai said mysteriously.

Now that we are short of money, the Dabashan base is a concentration camp with the most top-level equipment in the whole of China! They don't have such top-of-the-line equipment there, and if they did, their productivity would be at least hundreds of times greater!

"By the way, there's no problem with that set of roller screw pairs, right?" Yun Kai saw that Sun Qianming, She Hongwen and Zeng Yong were all eyes shining, knowing what they were thinking, and hurriedly changed the topic.

He has managed to pique their curiosity.

Once they confirm that this equipment can really achieve such machining accuracy, they will buy it at a big cost.

In this world, there is absolutely no equipment with higher precision.

And the reason why Yun Kai wanted to do this was because he had all his hopes, and Xiao Chuanyu, the assembly master of infinite pinning, told him that equipment of this level, even if it had auxiliary tools, could only be assembled in the base of Daba Mountain!

Yun Kai wants to use the bus to the base to help him produce, but it is impossible to just spend money. Huaxia's mid-level high-end equipment, many precision components are assembled in it, and there is no excess production capacity to do the business of a private small boss.

Of course, if it is some equipment that they can't buy if they want to buy it and process it there, this is difficult to say......

ps: Thank you doni for the two big monthly passes, thank you for the two big monthly passes *T-9o* and abnetg.

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