Smart Industrial Empire

"What did you guys do?" Yun Fei was a little puzzled when he received the call.His mind froze for two seconds, and his face was instantly overwhelmed with ecstasy. He ignored what the person on the phone said, hung up the phone, and rushed out of his general manager's office.

The call just now was made by that old guy Sun Lin, and Situ Heyun was also excitedly trying to grab the phone. How could he have imagined that as soon as he snatched the phone, he heard a "beep" from the other end of the phone? The busy tone, helplessly put down the phone in his hand and stared at the old Sun Lin with dissatisfaction.

"The credit belongs to all of us, why did you tell Boy Yun the good news?" Situ He Yun always felt like a child who was robbed of candy.Sun Lin is the person in charge of this project, and so is he himself. Why is he in the front row to announce the good news to Boy Yun?In the end, I didn't even say a word to Boy Yun.

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

The sister-in-law can bear it, but the uncle can't bear it either.

"Boy Yun doesn't want to talk to you, and there's nothing I can do about it..." Sun Lin is now looking smug. All the components of the entire system have completed all the processing yesterday, and the data transferred from the Jiuyi Heavy Industry assembly workshop An old assembler with rich technical experience, after a night of hard work, finally completed all the assembly this morning.

As soon as it was assembled, Situ Heyun directed his disciples and grandchildren to connect the rotary table driven by the hydraulic workstation with the CNC system.After the CNC system extended from the lsk9201-x1 system produced by Huadu CNC, after connecting with the hydraulic workstation, Situ Heyun, an old guy, couldn't wait to input a few parameters of the hydraulic workstation defined as the b-axis into the system. run.

After the staff checked all the lines, they nodded to the two old guys standing in front of the control system operation panel.With lightning speed, Situ Heyun stretched out his index finger and pressed the green button on the operation panel, which represented the start of operation.

Sun Lin didn't grab the honor of being the first to press the start button. After seeing Situ Laohuo press the start button, the huge hydraulic table began to rotate slowly.Hurriedly thinking about rushing to the office next to him, he wanted to announce the good news to the proponent of Yun Fei as soon as possible.Who is the first to announce the good news to Yun Fei.It shows who has the most credit.Because only those who have done the most are qualified to give good news to irresponsible project proposers, owners, and users.

For a long time, the two have said that their team has the most credit, and it's not because they know how to compete for credit, but because 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 mechanism is more important or the logic control of the circuit is more important, since the implementation of this project.The two argued many times.

There is no other reason, they all want to get more people under their own hands and get more research funds.

Although they are from the country, they are now working for Yunfei. If they can get more research funds from Yunfei, a local tyrant, to use it for research they have always wanted to do, because there is no such thing in their institute. Funding in this area and projects that have not been implemented.

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

If it is evenly distributed, there may not be enough wolves to eat.Instead, it will become more hungry, and in the end it is not beautiful.

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

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

"Can you tell me about such a workbench? How much z-axis travel is needed to process some parts with a turning diameter of only a few tens or more than 100? How to process the end near the chuck to avoid the tragedy of the spindle colliding with the workbench ?” Such a simple question, Yunfei couldn’t believe that these two veterans didn’t understand.

Since most of the machining centers are small machine tools with a stroke within one or two meters, generally speaking, the stroke in the z-axis direction will not exceed one meter.For a z-axis stroke of more than one meter, even if the moving distance is increased by 50.00%, it will be more than 1% technically difficult, especially for high-end machine tools, where the stroke exceeds [-]mm, the difficulty is even greater.

Most of the large machining centers are of the gantry type, and the worktable does not move, but is moved back and forth, left, right, up and down by two columns and the main shaft above the beam.The longer the spindle stretches, the less rigid the machine overall will be during machining.A machine tool with poor rigidity will not only reduce the cutting efficiency of the machine tool, but also make it impossible for the machine tool to guarantee the machining quality and machining accuracy during the cutting process.

The main shaft has no rigidity, and in the cutting process, there will be a phenomenon of giving up or planting the knife under the reaction force of the cutting force.In less serious cases, the part is just that the size of the program design cannot be processed in place, or a small amount of overcut.But in serious cases, it will even make the whole part scrapped.

You must know that in many cases the price of the products processed on the machining center will far exceed the value of the machining center itself.If this happens all the time, who would dare to use such a machine tool?

Therefore, in the whole world, the larger and heavier the machine tool, the more expensive it is.That kind of ultra-large cutting machine tool is even larger than the standard workshop buildings of many factories, and it is necessary to build a special factory building.Don't mention the price, the most massive machine tool that Yun Fei knew in his own world, the price is hundreds of millions, and it is still the US dollar when it is exchanged with RMB for [-] yuan!

When the two veterans heard Yun Fei's culture, their faces were filled with pride and joy, and their opponents disappeared.The two of them have dealt with various mechanical equipment for decades, how could they not know what the problem is.

From the very beginning, after explaining some vague theories to them, Yunfei let them go and let them explore by themselves, designing and improving.It's not a very difficult problem in the first place, but it's just because of inertial thinking in China that I haven't thought about it.At present, even the two-axis CNC lathes in China are still close to the door because of the problem of the ball screw. The three-axis machining center involves more things. At this time, they cannot directly cross the most basic two-axis and three-axis. Axis, focus on the four axes that involve more knowledge.

When the number of domestic machining centers has been maintained to a certain extent, the expensive four-axis machining center cannot be as expensive as the three-axis machining center because of its low price (compared to the four-axis, especially the five-axis machining center, which costs millions of dollars). In terms of price), when it is popularized in China, the domestic attention will focus on the simple four-axis.In Yunfei's world, 80.00% of China's four-axis machining centers appeared in this way.

"Well, Xiaoyun, I think you know that we don't have much foundation, and it's pretty good to be able to do this. Many of our heavy military equipment now require large four-axis machining centers. A small rotary table can't meet the needs at all..." Sun Lin felt very uncomfortable knowing that the thing in front of him that everyone had spent several months working out had no value for mass production.

Situ Heyun and a group of their disciples and disciples also nodded in agreement with Sun Lin's words.

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

The external fourth axis controlled by the CNC system looks very simple on the surface, but there are indeed 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 small, due to the backwardness of domestic materials and heat treatment processes, it is impossible to make those with a diameter of only two or three millimeters The part is subjected to the torque generated when machining some relatively long and complex parts.

For example, processing a transmission shaft composed of two regressive parabola quadratic functions or cubic functions used in high-speed rotation occasions is not only difficult to process materials, but also because the reciprocating stroke motion of many high-precision large-scale equipment requires relatively long transmission shafts , the torque generated by such a shaft during the machining process is too large for the rotary work to make repeated changes in the regression curve in a large range.If the rotary table cannot withstand the torque under high-speed rotary processing, it is likely to break the rotating parts inside the rotary table.

"You expect to use this to process large-scale parts? Did you make a mistake?" Yun Fei was very depressed about their thoughts.

If they do it like this, what they get out is not a simple fourth-axis rotary table for hanging at all, but a turning-milling compound machining center.Although he also wanted to create a turn-milling machining center, the difficulty was even higher than that of the five-axis.Even in his world, in the era when he left, Germany, which has the most powerful CNC machine tool technology, was not completely successful.

"Mr. Sun, I know that what you want to come up with is the fourth axis used on large machine tools, but have you ever thought that in our country up to now, except for a small number of x-strokes imported from abroad, the y-axis The outdated three-axis machining center with a stroke of no more than 1.4 meters does not have any large-scale machining centers at all. Even if you can make such a big one now, what can you do?" Yun Fei looked at the people in front of him who were at least a year older than the age These people in the round said earnestly.

"Although such a huge rotary table is worthless at all, it is not useless..." Yun Fei knew that he could not dissuade the enthusiasm of these free laborers.

Hearing Yunfei's words, everyone stared at Yunfei enthusiastically. (To be continued..)