"What did you come up with?" Yun Fei received the call, and the second monk was a little confused. His mind stagnated for two seconds, and his face was overwhelmed by ecstasy in an instant, and he didn't pay attention to what the person on the phone said, he hung up the phone directly and rushed out of his general manager's office.

The phone call just now was from Sun Lin's old guy, and Situ Heyun was also excitedly trying to grab the phone, where did he think that as soon as he grabbed the phone in his hand, he heard the busy sound of "beep" from the other end of the phone, and helplessly put down the phone in his hand and stared at Sun Lin with a dissatisfied face.

"The credit belongs to all of us, why did you let you give the good news to Yun Boy?" Situ Heyun always felt like a child who had been robbed of candy. Sun Lin is the person in charge of this project, and so is himself, what is he fighting in front to report the good news to Yun Boy? In the end, he didn't even say a word to Yun Xiaozi.

Isn't this subconsciously telling Yun Fei that he is the biggest hero!

My sister-in-law can bear it, and my uncle can't bear it.

"Yun boy doesn't want to talk to you, I can't do anything ......" Sun Lin is now proud, yesterday all the components of the entire system have been completed all the processing, from the Jiuyi Heavy Industry assembly workshop transferred from the old assembler with rich technical skills, after a night of hard work, finally completed all the assembly this morning.

As soon as it was assembled, Situ Heyun commanded his apprentices to connect the rotary workbench driven by the hydraulic workstation with the numerical control system. After connecting with the hydraulic workstation, Situ Heyun, an old guy, couldn't wait to input several hydraulic workbenches defined as B-axis into the system.LSK9201

When the staff checked all the wiring, they nodded to the two veterans standing in front of the control system operation panel. Situ Heyun stretched out his index finger with lightning speed, and fiercely pressed the green button on the operation panel that represented the start of operation.

Sun Lin didn't grab it, the honor of being the first to press the start button, and after seeing that after Situ Lao pressed the start button, the huge hydraulic workbench began to rotate slowly. Hurriedly thinking about the office next to him and rushing to it, he wanted to report the good news to Yun Fei, the proposer of this project, as soon as possible. Who was the first to give Yun Fei the good news. It shows who has the most credit. Because only the people with the most credit are qualified to give good news to the irresponsible project proposers, owners, and users.

All along, the two have said that their team has the greatest credit, and it is not that they will compete for credit, anyway, they simply want to overwhelm each other. In this simple fourth axis of the CNC machining center controlled by the CNC system and driven by the hydraulic workstation, whether the mechanical or the logic control of the circuit is more important, since the implementation of this project. The two argued quite a few times.

For no other reason, they all want to get more people and more research funds for their subordinates.

Although they are from the state, they are now working for Yun Fei, if they can get more research funds from Yun Fei, a local tyrant in the world, to study the projects they have always wanted to do, but they have not implemented because they have no funds in this area.

It is true that Yun Fei is a local tyrant, but this local tyrant has not only no money until now. I still owe tens of millions to the bank. In a situation where wolves have more meat and less meat, only strong wolves can have a full stomach.

If it were evenly distributed, there might not be enough wolves to eat. Instead, it will become hungrier and less beautiful in the end.

"This is the fourth axis you made?" Yun Fei couldn't help but be dumbfounded when he saw the extremely smooth fitter's workbench in front of him, which was more than one meter high and had a huge chuck on it.

"Yes. Is there something wrong? The two old guys were also dumbfounded when they heard Yun Fei's words.

"Can you tell me, such a workbench. How much Z-axis travel is needed to machine some parts with a rotation diameter of only a few tens or a hundred? How should the end near the chuck be machined to avoid the tragedy of the spindle colliding with the table? With such a simple question, Yun Fei didn't believe that these two old guys didn't know.

Since machining centers are mostly used for small machine tools with a stroke of less than one or two meters, generally speaking, the travel in the Z-axis direction will not exceed one meter. More than one meter of Z-axis travel, even if the moving distance is increased by 10%, the technical difficulty will be more than 50%, especially in high-end machine tools, the stroke is more than 1mm, this difficulty is greater.

Most of the large machining centers are gantry type, and the worktable does not move, but moves up and down by the spindle on the two columns and the beam. The longer the spindle is extended, the less rigid the overall machine will be during machining. The machine tool with poor rigidity will not only reduce the cutting efficiency of the machine tool, but also make the machine tool unable to ensure the machining quality and machining accuracy in the cutting process.

The spindle has no rigidity, and in the cutting process, there will be a phenomenon of giving the knife or planting the knife under the reaction force of the cutting force. In less severe cases, the part is simply programmed to be dimensionally inadequate, or has a small amount of undercut. But in serious cases, it can even make the entire part scrapped.

In many cases, the price of the products processed on the machining center will far exceed the value of the machining center itself. If such a situation always occurs, who would dare to use such a machine tool?

Therefore, in the whole world, the larger and more heavy machine tools, the more expensive they are. That kind of super large cutting machine tool will even be larger than the standard workshop of many factories, and it will have to be specially built. Don't mention the price, Yun Fei knows the largest machine tool in his world, the price is hundreds of millions, and it is still the dollar when the exchange price is eight yuan and six dollars with the yuan!

When the two old men heard Yun Fei's culture, their faces were originally filled with pride and joy, and their opponents disappeared. The two of them have been dealing with all kinds of machinery and equipment for decades, how can they not understand the problem here.

From the very beginning, Yun Fei gave them some vague theories and let them explore on their own, designing and improving at the same time. It's not a very difficult problem in the first place, and it's just that the country has not been thinking about it because of inertial thinking. Now even the two-axis CNC lathes in China are still short of the ball screw problem, the three-axis machining center involves more things, at this time, they can not directly cross the most basic two axes and three axes, and put their eyes on the four axes involving more knowledge.

When the number of domestic machining centers is maintained to a certain extent, the expensive four-axis can not be as cheap as the three-axis machining center because of the low price (compared to the four-axis, especially the five-axis machining center often millions of dollars in price), the domestic attention will be on the simple four-axis. In Yunfei's world, 80% of China's four-axis machining centers appeared in this way.

"This, Xiaoyun, I think you know that we don't have much foundation, and it's already very good to be able to do it to such an extent. Many of our current heavy military equipment need large-scale four-axis machining centers, and small rotary workbenches simply cannot meet the use of ......" Zhilu said that the thing in front of him that everyone spent several months to make had no value in mass production, and Sun Lin's heart was very uncomfortable.

Situ Heyun and a group of their disciples and grandchildren also nodded beside them and echoed Sun Lin's words.

High-end machine tools are originally for the defense industry. If the high-end machine tools produced cannot be applied to the military industry, how can they be embarrassed?

On the surface, it seems very simple, but there are too many things involved. Although it is only a simple rotary table driven by a hydraulic workstation and a numerical control device, according to their design, if it is too miniaturized, due to the backwardness of domestic materials and heat treatment technology, it is simply impossible to make those parts with a diameter of only two or three millimeters withstand the torque generated when processing some relatively long complex parts.

For example, the processing of the transmission shaft composed of the quadratic function or cubic function of two regression parabolas used in high-speed rotation occasions is not only difficult to process the material, but also because the reciprocating stroke movement of many high-precision large-scale equipment needs to use a relatively long transmission shaft, and the torque generated by such a shaft in the machining process is too much for the rotary work to do repeated changes in the regression curve in a large range. If the rotary table cannot withstand the torque of high-speed rotary machining, it is likely that the rotating parts inside the rotary table will break.

"You're counting on this for large parts machining? Is there any mistake? Yun Fei was depressed about their thoughts.

If they do it like this, what they do is not a simple fourth-axis rotary workbench that is simply used to hang, but involves a turning and milling compound machining center. Although he also wants to make a turn-mill compound machining center, the difficulty is even higher than that of the five-axis. Even in his world, in the era when he left, Germany, which had the most powerful CNC machine tool technology, was not completely successful.

"Sun Lao, I know that what you want to get out is the fourth axis used on the large machine tool, but have you ever thought that our country has so far, except for a small number of imported X-stroke of no more than two meters, Y-axis travel of no more than one meter four of the old-fashioned three-axis machining center, there is no large-scale machining center at all. Even if you make it this big now, what can you do? Yun Fei said earnestly to the people in front of him, who were at least one round older.

"Although such a huge rotary workbench is of no value at all, it is not useless...... "Yun Feizhi said, not to discourage these free laborers.

Hearing Yun Fei's words, all the people stared at Yun Fei with enthusiastic eyes. (To be continued......)