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I got off work at three o'clock in the morning last night, I got off work too late, I said that I coded the word this afternoon, but I slept soundly, and the boss notified the gourd to work overtime in the company this afternoon......

Today, I don't know if the road can be completed, but the gourd will try its best to complete it. 、

"A few, a few!" As soon as he heard Yun Fei's words, Liu Cheng replied without thinking.

This is the equipment, not to mention the large castings used to process CNC milling or machining centers, even if it is used to process the main body of the basic large castings of ordinary milling windows, the efficiency is much better than that of the company's technical personnel.

The improvement of processing efficiency will inevitably reduce the production cost of machine tools.

The lower the cost and the better the quality of the equipment, in the market-oriented environment, can have a stronger competitiveness.

"What is the accuracy of this CNC gantry milling you designed for the machining of various large castings? What is the approximate annual production capacity? "Since you want to buy, you still have to understand the performance of these products first, after all, this is related to a lot of things.

At a time when their products are not selling very well, it is definitely not possible to buy back a bunch of equipment that can only be placed there as decorations.

Although the state pays money, it can't be too extravagant and wasteful, right?

"Our gantry milling is within the working range of three meters, and the designed processing flatness is within 0.05mm, the straightness is 0.07mm, and the repeatability is 0.05mm, but according to the current processing level and technical conditions, the flatness can only reach 0.08mm and the straightness of 0.1mm after the finished product leaves the factory. The repeated positioning accuracy is 0.06 to 0.07mm...... "Yun Fei is a little embarrassed, some foreign companies that produce heavy precision equipment, the actual machining accuracy of such medium-sized gantry milling is higher than the accuracy they designed.

Heavy equipment is not as capable of achieving high accuracy as small equipment.

The accuracy index and standard of small equipment are generally in the order of 0.01mm.

The accuracy index and technical standard of heavy equipment are in the order of 0.1mm.

Jiuyi Heavy Industry is now designing and developing this kind of CNC gantry milling, if it can achieve the accuracy he said, it has been able to rank among the category of precision equipment.

Of course, Yun Fei said these parameters. It is all the theoretical design performance and the performance that can be achieved theoretically, and the accuracy that the factory equipment can achieve will definitely be different from the data that Yun Fei said.

Of course, manufacturers who use these devices will be psychologically prepared.

Even the best foreign manufacturers are unable to achieve 100% accuracy in theoretical design.

The machining accuracy of the equipment involves many aspects of the material's own performance. The range of precision of machining, the realization of assembly techniques, the performance of the control system, and even the temperature changes around the equipment. Ground flatness and so on.

It is really because of this that CNC machine windows can measure the industrial level of a country.

"To be able to achieve such a high level of accuracy?" Zhu Feng, who has been immersed in the mechanical technology industry for most of his life, expressed some disbelief.

He believes that there is a lot of moisture in Yun Fei's words.

"Of course, this is just our experience in producing other equipment. The accuracy of the inferred data will have to wait for our research to be completed. And continue to improve, and strive to meet the accuracy requirements of our design within five years......" Sun Lin was very dissatisfied with Zhu Feng's doubts.

These data are inferred from the best engineering technicians of the entire North Heavy Industry and Jiuyi Heavy Industry by using the most mature technologies of the two parties, and after half a year of design, based on the experimental data on site!

The capital can't produce a machine by itself, and it is suspected that others can't produce it!

"Even if it is worse than the actual accuracy, this accuracy range can meet most of the domestic product finishing requirements. This accuracy is almost higher than the accuracy of the parts processed by the best ordinary precision equipment we are using now...... "As the earliest ally of Jiuyi Heavy Industry, Haar Heavy Industry was the first to place an order for 20 units.

These CNC gantry milling is used to carry out the semi-finishing of the products that Jiuyi Heavy Industry has made for them, which not only has high efficiency and guaranteed accuracy, but also can control the processing size of these important parts consistently, which has great benefits for the finishing process later.

"Yes, this is much higher than the production efficiency of the ordinary equipment we are using now, especially to be able to concentrate a lot of processes together, just the preparation time for various clamping, it saves too much......" A tall thin old man with glasses listened to Pan Zhigao's words, looked at the CNC gantry milling that was running automatically in front of him, and nodded.

All kinds of large and heavy parts will take a lot of time to set up and align before machining.

Before there is no large-scale heavy-duty CNC machining equipment, each process is scattered, each large or heavy-duty parts from the blank to the finished product, will go through planing, milling, boring, pliers and other processes, if there is a special design part, but also need a specially formulated electrical processing process.

Each process requires a centering fixture, which means that the actual machining time for these large parts is not even the preparation time.

"Of course, if all the processes that need to be processed on a surface are concentrated in one process, how can this not improve the accuracy and efficiency? We only have a quota of six units for the second machine in the capital, Mr. Yun, you won't take the order too small, right? "The second machine in the capital is also a company that produces all kinds of machinery and equipment, but they are not as important as the first machine in the capital.

Even if most of the important state-owned enterprises have centralized upgrading of their technical equipment this time, the amount of capital and heavy equipment exceeds 30, and they only have 6 units!

"How come, Mr. Zhao, even if we receive your company's order, at least we will not start delivering it until the second half of next year, you just have such a quota, don't you keep it for the purchase of high-precision equipment imported from abroad?" Yun Fei is still very sympathetic to the second machine of the capital.

Although they produce most of the ordinary equipment. But the level of skill is really not comparable to that of the capital. Otherwise, Yun Fei would have directly asked them to cooperate.

Zhao Mingzhang of the second machine of the capital is still a very capable factory director, he was just in his early forties, and he was appointed to become the director of the second machine of the capital in a critical situation, and in just two years, he turned this machinery factory with only more than 2,000 people and was on the verge of bankruptcy to turn losses into profits, and their newly developed tool milling and small turret milling, although the rigidity was poor. However, for the processing of soft materials such as aluminum parts and the finishing of steel parts, the precision effect is much higher than that of ordinary window milling processing.

It is well received by market users.

If this is not the case, it is estimated that this time the state will not have the second machine in their capital.

"Those foreign equipment, in addition to the price is higher, the accuracy is not very good, we are domestic, we also buy other people's scrapped second-hand mobile phones and the production of garbage machine tools with poor accuracy, why should we suffer from that foreign atmosphere?" Zhao Mingzhang's words. Suddenly, the leaders of the national ministries and commissions who were watching the CNC gantry milling test of Jiuyi Heavy Industry with great interest around him, and the faces of the leaders of the national ministries and commissions that automatically ran and closed the gap between the guide rail and the gantry column under the control of the program suddenly became ugly.

These leaders have always advocated the purchase of imported equipment from abroad.

In their eyes, imported CNC equipment. It is the real high-precision CNC equipment.

"Let's go and see the scene where we study the four-axis machining center...... "The CNC gantry milling here is almost over, whether to place an order, these bigwigs can't make up their minds for a while, anyway, they don't just have to discuss internally. Finally, the above approval is required to determine the quantity purchased.

After all, there are few people here who are willing to smash all the procurement quotas of large equipment on Jiuyi Heavy Industry like the second machine in the capital.

And the most reluctant, even if Yun Fei does not come out of the horse. For the purchase of these heavy equipment, Yang Qing will also lobby his direct leaders, only the more the gantry machining center of Jiuyi Heavy Industry sells, the more they are responsible for the production of mechanical parts and components, the greater profits can be obtained.

He was more concerned about this matter than anyone else.

Of course, the business bigwigs who have obtained the national heavy equipment purchase order quota come to Jiuyi Heavy Industry for on-the-spot inspection, which is also the function of his upper and lower operations.

It has little to do with Yunfei of Jiuyi Heavy Industry.

Yun Fei just invited the bigwigs of various ministries and commissions to visit the factory, but I didn't expect that the most of them came to the line, and there were new changes above, in order to expand the independent management rights of the subordinate state-owned units of the Ministry of Industry and the Ministry of Machinery, the procurement of the country is only to guide, group procurement, in principle, by the independent choice of each enterprise, the bigwigs of the national ministries and commissions are only responsible for collectively negotiating the price.

"Here is the four-axis machining center that we have developed to imitate the German EP6 for spindle vertical / horizontal conversion, we have adopted most of the design ideas of the Germans, and most of the key technologies in it cannot be imitated at all, and they have to study the ...... by themselves" The research area of the four-axis machining center, strictly speaking, is open to the visiting group for the first time.

This project cost Jiuyi Heavy Industry more than half of the R&D funds invested in CNC machine tools.

In the earliest sense, it should be in Jiuyi Heavy Industry has not yet begun to build a factory, Yun Fei proposed, in the three-axis machining center to install a simple rotary worktable driven by the PMC control module, the formation of the fourth axis like a simple four-axis start, now more than four years have passed, but there has not been much breakthrough.

Four axes and four linkages are the factors that have always limited this project.

In this regard, Yun Fei has nothing to do.

Although he has seen a lot of four-axis home centers, and there are also German prototypes for them to disassemble, but some things are not designed according to other people's products at all, and then assembled.

"This project, from the end of 91 to now after four years, costing more than 100 million yuan, but due to various reasons, has not made too many breakthroughs, the most critical technology is how to achieve four-axis linkage processing, four-axis three-linkage has been solved now, but four-axis four-linkage, has always been not very ideal......" Sun Lin to the disappointed crowd introduced the research progress of the ninety-one heavy industry four-axis machining center.

If it weren't for the fact that Yun Fei had to engage in such a high-end four-axis four-axis four-linkage machine tool that can be converted vertically / horizontally, under the technical reserve of simple four-axis, the four-axis machining center produced by Jiuyi Heavy Industry should have been able to be put into mass production.

Although it is only the lowest level of four-axis three-linkage machine tools that are not much more advanced than those simple four-axis, because the fourth axis and the two moving axes of XY are integrated, the technology in the middle can be regarded as first-class in China.

"Chief Engineer Sun, when will your company's four-axis be mass-produced?" This is especially important for four-axis machining centers, which are used by companies that manufacture precision machine windows.

"According to the current progress, it will take about ten to fifteen months to research it, and then the accuracy level will be improved to reach the RP6 of the Germans or higher than them, it is estimated that it will take at least three years, and the output of such high-level equipment will not be too high......," Sun Lin said helplessly.

For the four-axis project team, which only has one prototype for disassembly research, this thing is more than two or three times more difficult than the technical skills of the three-axis machining center!

"Will your company accept orders now?" We want to place a four-axis order for ten units now, no matter what your price is! Zhao Mingzhang said categorically.

When other people heard Zhao Mingzhang say this, they couldn't help but express their attitudes, especially the companies like Capital No. 1 Machine and Northeast No. 1 Machine that still want to get the technology they urgently need from Jiuyi Heavy Industry, and they have shown to Yunfei that they are eager to order Jiuyi Heavy Industry four-axis machining center......

This on-site visit is actually an on-site order meeting, not only the bigwigs from all parts of the central government, but also some factory directors and engineers who can be the masters of various heavy machinery and equipment companies.

In terms of the price of CNC gantry milling, Yun Fei did not ask for a price like those heavy-duty CNC cars, and only offered a price of 3.8 million yuan per unit!

For this alone, 132 orders were received on site.

This can make Yang Qing, the director of the Northern Heavy Factory on the side, very excited.

Although the profits of CNC gantry milling are 91 Heavy Industries, the production of mechanical parts of the North Heavy Industry has also been divided into more than 200 million contracts!

This is the largest order received by North Heavy Industry under the market economy system so far.

And all of this was brought to him by Jiuyi Heavy Industry, a private enterprise that he didn't look down on at all.

Jiuyi Heavy Industry's four-axis machining center, which has not yet successfully developed an imitation of the German Dirk EP6, has received more than 40 orders in the absence of physical objects and reliable technical means to guarantee, but the delivery time is three years later! (To be continued......)