Hearing Yun Fei's words, Ren Zhiguo nodded embarrassedly.

When he came to Qingfeng Machinery, he came hard, after all, this thing is a bit unauthentic. But he can't help it, this is a task, it must be completed, if Qingfeng Machinery really does not accept this batch of products, Camat company will face a dilemma.

Before coming, the boss said that this batch of work must be packaged with the foreign trade products in hand, and whoever wants to make foreign trade products with high profits must accept this domestic order that does not have much profit.

There are many processing plants that want to have foreign trade orders in the hands of Kamat, but no one can compare with Qingfeng Machinery in terms of technical strength, processing technology, and production capacity. Even many processing factories only have two or three CNC machine tools in their hands. And their factory does not have a master who is extremely familiar with CNC machining like Yun Fei, and the processing accuracy cannot be guaranteed at all.

The processing of foreign trade parts is the most stringent. Foreigners will not accept the tolerance set by foreigners, even if it exceeds 0.001mm, even if it exceeds such a tolerance, it will not affect the service life of the parts at all. More importantly, most of the foreigner's parts are stainless steel, which is more difficult to process, if there is no rich processing experience, it is difficult to ensure the surface roughness required by foreigners (generally 1.6, a few requirements are not too strict 3.2), although such a surface roughness is easy to achieve by grinding machine or grinding machine, but the orders in the hands of Cammart company, most customers are required to retain the knife marks!

There are also a lot of parts that are a lot of ordinary steel, but the common one is aluminum. Although aluminum is easy to process, it is not enough due to the shaping and deformation of the material, and it is easy to deform the parts during the processing process, or it cannot meet the surface finish requirements.

Foreign trade parts processing, not only for the quality of the product requirements, for the surface quality requirements are higher, many foreign factories, for the processing products from the mainland, the requirements can not be scratched, bruised. Otherwise, the payment will be refused, and of course, the use will still be used.

In this way, the technological requirements for the processing of foreign trade products are very strong. If you don't have rich experience in the processing of various materials, and you haven't seen more complex products, it's easy to lose money when doing foreign trade processing parts. Of course, if the product is processed in strict accordance with the drawings, and foreigners can't find any faults, the profits are also considerable.

The drawings that Yun Fei is holding now are also parts of foreign trade products. It's just that someone else changed hands. Processing is difficult, demanding, risky, and the profit is low, and no one would agree to such a thing. If Qingfeng Machinery accepts this order, it is equivalent to their profits being taken away by the factory that changed hands......

The reason why Kamat did this was because Zhilu Dao Qingfeng Machinery could not refuse. Qingfeng Machinery CNC production capacity, most of which are done for foreign trade parts processing, and the middleman is Kamat. As a middleman, Kamat has a good understanding of Qingfeng Machinery.

Either Qingfeng Machinery gives up the current development momentum, leaves millions of equipment idle, and then looks for business; Or just accept the order and spend money on the development of your own factory.

"Lao Ren, I have seen these pictures, there are two products that we can't do, and we must have a four-axis machining center to ensure accuracy. The space size tolerance of 0.02mm on this sheet can not be guaranteed by multiple processes, and it is necessary to use a four-axis machining center to ensure a clamping to ensure the space size tolerance, otherwise the assembly will become a problem. There is also this one, two cross-closed spiral trunking, without a four-axis machining center can not be done at all, and the accuracy of the position degree is required to be less than 0.05mm. In addition, this shaft with a spiral groove can use a speed of 30,000 revolutions per minute, and if it is not dynamically balanced, the huge torque will cause the shaft to crack at high speed. I really obeyed you, I don't have the resources in my hands, and I dare to take on such a job. I don't want to think about it, there are now several four-axis machining centers on the whole continent. Yun Fei quickly finished reading the few drawings in his hand. Yang sneered at Ren Zhiguo at the two drawings in his hand that had to be made using a four-axis machining center.

Yun Fei also heard the conversation between Ren Zhiguo and Wang Qingfeng just now. I secretly felt funny in my heart. This is mostly a drawing of the military. Looking at the precision of the parts, Yun Fei really couldn't figure out what this was used for, a transmission shaft, using a speed of 30,000 revolutions per minute, he had encountered it before, but no matter how he asked, the owner of the processing plant who had a good relationship with him didn't tell him.

After all, in the processing industry, many jobs need to sign a confidentiality agreement before getting an order.

On the whole, the products on these drawings, whether it is complexity or accuracy requirements, are higher than what Qingfeng Machinery is doing now.

Since it is not a foreigner's job, in China, according to Yun Feizhilu, the civilian products of this era are still so sophisticated. Maybe, but it's all done in the factories of the domestic military, and he has never seen what a high-end precision dust-free military precision machining workshop looks like.

"Hehe......" Ren Zhiguo could only smile bitterly at Yun Fei's ridicule. It's not that he hasn't seen these drawings, but his boss doesn't know anything about machining, so she has to force herself to find a factory to make these complex parts first, and she can only take them to Yun Fei, a magical young man, for help.

After all, the products on these drawings are the most critical part of some kind of equipment that cannot be said. It has been placed in the military's factory for several years, and it has not been solved, after all, no one can do it without suitable processing equipment, right?

"Can you find a way to solve it?" Ren Zhiguo has always felt that there is no processing problem that Yun Fei can't solve.

"If you don't have rice, can you cook rice?" Yun Fei asked Ren Zhiguo rhetorically.

Wang Qingfeng was shocked by Ren Zhiguo's words and still didn't come back to his senses, the whole person shrunk on the sofa, smoking one after another.

He knew that Camat wanted half of his own production capacity, and the processing would definitely not be the drawings in Yun Fei's hands. That's definitely a large number of products. He was weighing whether it was cost-effective to bear the loss after refusal, or whether it was cost-effective to abandon Kamat's business and open new customers.

Ren Zhiguo was speechless.

There was silence in the smoky office.

Ren Zhiguo was thinking about what would happen to him if he couldn't complete this mission; And Yun Fei is recalling, is there a way to make these two most difficult products without a four-axis machining center.

But no matter how you think about it, you can't think of a solution. The accuracy requirements of space size, repeated clamping, can not guarantee the accuracy of repeated positioning, and the cumulative error will definitely exceed 0.02mm. The other closed spiral with a ternary equation does not guarantee that the rotation of the product will be perfectly matched with the other three axes of the machining center during processing.

After all, the machining center is computer-controlled, and people simply cannot ensure the precise coordination of the four directions, after all, a person only has one pair of hands.

The only solution to this problem is a four-axis machining center. Four-axis and three-linkage can't work, it has to be four-axis and four-linked! Thinking of this, Yun Fei already had an idea in his heart.

"Old Ren, this job is not impossible to solve, but ......" After smoking half a pack of cigarettes in a row, Yun Feicai raised his head and looked at Wang Qingfeng and Ren Zhiguo, who were looking at each other like fighting cocks.

"Say, if there are any requirements, as long as they can be solved, they are easy to say." Ren Zhiguo knew very well that it was impossible to get these two parts out without spending some cost. Anyway, the parts on these drawings, after several years of experiments, have cost a lot.

"Installing a rotary table on top of the machining center means converting a three-axis machining center into a four-axis machining center. Not only is the price very high, but it may also take a long time. Yun Fei didn't want to say this method, although the rotary table seems very simple, but it is not a simple matter to cooperate with the other three axes of the machining center.

The three-axis machining center of the control system can be used by expanding it. However, the rotation angle accuracy of the rotary worktable, the motion control of the hydraulic workstation for the rotary table, the angle control of the single-chip microcomputer for the rotary table, and so on, are all problems.

If this problem can be solved, there will be no shortage of four-axis machining centers on the continent. After all, a simple four-axis machining center, that's also a four-axis machining center, isn't it? That's also more high-end than a three-axis machining center, isn't it?

Many people once said that in the mainland, as long as any kind of high-end equipment of foreigners is imitated, the entire industrially weak country in the world will be happy. Yun Fei thinks it's really TMD.

Not to mention others, just for the four-axis machining center, after 20 years, although there are many domestic manufacturers can make it, but the machining accuracy can not be compared with the imported one, and the cost is much higher than that of foreigners of the same grade.

There are a lot of domestic talents, and not enough of most companies only focus on immediate interests. As long as it can produce a four-axis machining center, even if it is simple, there is an incomparably huge market demand on the road. Studying a machine tool with 5-axis linkage? No kidding, let's not talk about anything else, investment alone can make most people retreat from that huge ambition!

Don't look at the five-axis linkage CNC machine tool compared to the four-axis machining center in the X-axis plus a rotation function to achieve the angle rotation of the fourth axis, to only one more Z-axis swing, but it is this small point, if you want to cross, it is like climbing to the sky!

Moreover, 20 years later, most of the four-axis machining centers in China only add a fourth axis on the workbench, which is the lowest difficulty four-axis machining center in Chengdu!

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